myeasycms-v2/supabase/migrations/20221215192558_schema.sql

/*
 * -------------------------------------------------------
 * Supabase SaaS Starter Kit Schema
 * This is the schema for the Supabase SaaS Starter Kit.
 * It includes the schema for accounts, account roles, role permissions, memberships, invitations, subscriptions, and more.
 * -------------------------------------------------------
 */
/*
 * -------------------------------------------------------
 * Section: Revoke default privileges from public schema
 * We will revoke all default privileges from public schema on functions to prevent public access to them
 * -------------------------------------------------------
 */
create extension if not exists "unaccent";

-- Create a private Makerkit schema
create schema if not exists kit;

grant USAGE on schema kit to authenticated, authenticated;

-- We remove all default privileges from public schema on functions to
--   prevent public access to them
alter default privileges revoke execute on functions from public;

revoke all on schema public from public;

revoke all PRIVILEGES on database "postgres" from "anon";

revoke all PRIVILEGES on schema "public" from "anon";

revoke all PRIVILEGES on schema "storage" from "anon";

revoke all PRIVILEGES on all SEQUENCES in schema "public" from "anon";

revoke all PRIVILEGES on all SEQUENCES in schema "storage" from "anon";

revoke all PRIVILEGES on all FUNCTIONS in schema "public" from "anon";

revoke all PRIVILEGES on all FUNCTIONS in schema "storage" from "anon";

revoke all PRIVILEGES on all TABLES in schema "public" from "anon";

revoke all PRIVILEGES on all TABLES in schema "storage" from "anon";

-- We remove all default privileges from public schema on functions to
--   prevent public access to them by default
alter default privileges in schema public revoke execute on functions
    from anon, authenticated;

-- we allow the authenticated role to execute functions in the public schema
grant usage on schema public to authenticated;

-- we allow the service_role role to execute functions in the public schema
grant usage on schema public to service_role;


/*
 * -------------------------------------------------------
 * Section: Enums
 * We create the enums for the schema
 * -------------------------------------------------------
 */
/*
 * Permissions
 - We create the permissions for the Supabase MakerKit. These permissions are used to manage the permissions for the roles
 - The permissions are 'roles.manage', 'billing.manage', 'settings.manage', 'members.manage', and 'invites.manage'.
 - You can add more permissions as needed.
 */
create type public.app_permissions as enum(
    'roles.manage',
    'billing.manage',
    'settings.manage',
    'members.manage',
    'invites.manage'
);


/*
 * Subscription Status
 - We create the subscription status for the Supabase MakerKit. These statuses are used to manage the status of the subscriptions
 - The statuses are 'active', 'trialing', 'past_due', 'canceled', 'unpaid', 'incomplete', 'incomplete_expired', and 'paused'.
 - You can add more statuses as needed.
 */
create type public.subscription_status as ENUM(
    'active',
    'trialing',
    'past_due',
    'canceled',
    'unpaid',
    'incomplete',
    'incomplete_expired',
    'paused'
);


/*
 Payment Status
 - We create the payment status for the Supabase MakerKit. These statuses are used to manage the status of the payments
 */
create type public.payment_status as ENUM(
    'pending',
    'succeeded',
    'failed'
);


/*
 * Billing Provider
 - We create the billing provider for the Supabase MakerKit. These providers are used to manage the billing provider for the accounts and organizations
 - The providers are 'stripe', 'lemon-squeezy', and 'paddle'.
 - You can add more providers as needed.
 */
create type public.billing_provider as ENUM(
    'stripe',
    'lemon-squeezy',
    'paddle'
);

/*
* Subscription Item Type
- We create the subscription item type for the Supabase MakerKit. These types are used to manage the type of the subscription items
- The types are 'flat', 'per_seat', and 'metered'.
- You can add more types as needed.
*/
create type public.subscription_item_type as ENUM(
    'flat',
    'per_seat',
    'metered'
);

/*
 * -------------------------------------------------------
 * Section: App Configuration
 * We create the configuration for the Supabase MakerKit to enable or disable features
 * -------------------------------------------------------
 */
create table if not exists public.config(
    enable_team_accounts boolean default true not null,
    enable_account_billing boolean default true not null,
    enable_team_account_billing boolean default true not null,
    billing_provider public.billing_provider default 'stripe' not null
);

comment on table public.config is 'Configuration for the Supabase MakerKit.';

comment on column public.config.enable_team_accounts is 'Enable team accounts';

comment on column public.config.enable_account_billing is 'Enable billing for individual accounts';

comment on column public.config.enable_team_account_billing is 'Enable billing for team accounts';

comment on column public.config.billing_provider is 'The billing provider to use';

alter table public.config enable row level security;

-- create config row
insert into public.config(
    enable_team_accounts,
    enable_account_billing,
    enable_team_account_billing)
values (
    true,
    true,
    true);

-- Open up access to config table for authenticated users and service_role
grant select on public.config to authenticated, service_role;

-- RLS on the config table
-- Authenticated users can read the config
create policy "public config can be read by authenticated users" on
    public.config
    for select to authenticated
        using (true);

-- Function to get the config settings
create or replace function public.get_config()
    returns json
    as $$
declare
    result record;
begin
    select
        *
    from
        public.config
    limit 1 into result;

    return row_to_json(result);

end;

$$
language plpgsql;

-- Automatically set timestamps on tables when a row is inserted or updated
create or replace function public.trigger_set_timestamps()
    returns trigger
    as $$
begin
    if TG_OP = 'INSERT' then
        new.created_at = now();

        new.updated_at = now();

    else
        new.updated_at = now();

        new.created_at = old.created_at;

    end if;

    return NEW;

end
$$
language plpgsql;

-- Automatically set user tracking on tables when a row is inserted or updated
create or replace function public.trigger_set_user_tracking()
    returns trigger
    as $$
begin
    if TG_OP = 'INSERT' then
        new.created_by = auth.uid();
        new.updated_by = auth.uid();

    else
        new.updated_by = auth.uid();

        new.created_by = old.created_by;

    end if;

    return NEW;

end
$$
language plpgsql;

grant execute on function public.get_config() to authenticated, service_role;

-- check if a field is set in the config
create or replace function public.is_set(field_name text)
    returns boolean
    as $$
declare
    result boolean;
begin
    execute format('select %I from public.config limit 1', field_name) into result;

    return result;

end;

$$
language plpgsql;

grant execute on function public.is_set(text) to authenticated;


/*
 * -------------------------------------------------------
 * Section: Accounts
 * We create the schema for the accounts. Accounts are the top level entity in the Supabase MakerKit. They can be organizations or personal accounts.
 * -------------------------------------------------------
 */
-- Accounts table
create table if not exists public.accounts(
    id uuid unique not null default extensions.uuid_generate_v4(),
    primary_owner_user_id uuid references auth.users on delete
	cascade not null default auth.uid(),
    name varchar(255) not null,
    slug text unique,
    email varchar(320) unique,
    is_personal_account boolean default false not null,
    updated_at timestamp with time zone,
    created_at timestamp with time zone,
    created_by uuid references auth.users,
    updated_by uuid references auth.users,
    picture_url varchar(1000),
    public_data jsonb default '{}'::jsonb not null,
    primary key (id)
);

comment on table public.accounts is 'Accounts are the top level entity in the Supabase MakerKit. They can be organizations or personal accounts.';

comment on column public.accounts.is_personal_account is 'Whether the account is a personal account or not';

comment on column public.accounts.name is 'The name of the account';

comment on column public.accounts.slug is 'The slug of the account';

comment on column public.accounts.primary_owner_user_id is 'The primary owner of the account';

comment on column public.accounts.email is 'The email of the account. For organizations, this is the email of the organization (if any)';

-- Enable RLS on the accounts table
alter table "public"."accounts" enable row level security;

-- Open up access to accounts
grant select, insert, update, delete on table public.accounts to
    authenticated, service_role;

-- constraint that conditionally allows nulls on the slug ONLY if
--   personal_account is true
alter table public.accounts
    add constraint accounts_slug_null_if_personal_account_true check
	((is_personal_account = true and slug is null) or
	(is_personal_account = false and slug is not null));

-- constraint to ensure that the primary_owner_user_id is unique for
--   personal accounts
create unique index unique_personal_account on
    public.accounts(primary_owner_user_id)
where
    is_personal_account = true;

-- RLS on the accounts table
-- SELECT: Users can read their own accounts
create policy accounts_read_self on public.accounts
    for select to authenticated
        using (auth.uid() = primary_owner_user_id);

-- UPDATE: Team owners can update their accounts
create policy accounts_self_update on public.accounts
    for update to authenticated
        using (auth.uid() = primary_owner_user_id)
        with check (auth.uid() = primary_owner_user_id);

-- Functions
-- Function to transfer team account ownership to another user
create or replace function
    public.transfer_team_account_ownership(target_account_id uuid,
    new_owner_id uuid)
    returns void
    as $$
begin
    if current_user not in('service_role') then
        raise exception 'You do not have permission to transfer account ownership';

    end if;
    -- update the primary owner of the account
    update
        public.accounts
    set
        primary_owner_user_id = new_owner_id
    where
        id = target_account_id
        and is_personal_account = false;
    -- update membership assigning it the hierarchy role
    update
        public.accounts_memberships
    set
        account_role =(
            select
                name
            from
                public.roles
            where
                hierarchy_level = 1)
    where
        target_account_id = account_id
        and user_id = new_owner_id;

end;

$$
language plpgsql;

grant execute on function
    public.transfer_team_account_ownership(uuid, uuid) to
    service_role;

create function public.is_account_owner(account_id uuid)
    returns boolean
    as $$
    select
        exists(
            select
                1
            from
                public.accounts
            where
                id = is_account_owner.account_id
                and primary_owner_user_id = auth.uid());
$$
language sql;

grant execute on function public.is_account_owner(uuid) to
    authenticated, service_role;

create or replace function kit.protect_account_fields()
    returns trigger
    as $$
begin
    if current_user in('authenticated', 'anon') then
	if new.id <> old.id or new.is_personal_account <>
	    old.is_personal_account or new.primary_owner_user_id <>
	    old.primary_owner_user_id or new.email <> old.email then
            raise exception 'You do not have permission to update this field';

        end if;

    end if;

    return NEW;

end
$$
language plpgsql;

-- trigger to protect account fields
create trigger protect_account_fields
    before update on public.accounts for each row
    execute function kit.protect_account_fields();

create or replace function kit.add_current_user_to_new_account()
    returns trigger
    language plpgsql
    security definer
    set search_path = public
    as $$
begin
    if new.primary_owner_user_id = auth.uid() then
        insert into public.accounts_memberships(
            account_id,
            user_id,
            account_role)
        values(
            new.id,
            auth.uid(),
            'owner');

    end if;

    return NEW;

end;

$$;

-- trigger the function whenever a new account is created
create trigger "add_current_user_to_new_account"
    after insert on public.accounts for each row
    execute function kit.add_current_user_to_new_account();

-- create a trigger to update the account email when the primary owner
--   email is updated
create or replace function kit.handle_update_user_email()
    returns trigger
    language plpgsql
    security definer
    set search_path = public
    as $$
begin
    update
        public.accounts
    set
        email = new.email
    where
        primary_owner_user_id = new.id
        and is_personal_account = true;

    return new;

end;

$$;

-- trigger the function every time a user email is updated
--     only if the user is the primary owner of the account and the
--   account is personal account
create trigger "on_auth_user_updated"
    after update of email on auth.users for each row
    execute procedure kit.handle_update_user_email();

/*
 * -------------------------------------------------------
 * Section: Roles
 * We create the schema for the roles. Roles are the roles for an account. For example, an account might have the roles 'owner', 'admin', and 'member'.
 * -------------------------------------------------------
 */
-- Account Memberships table
create table if not exists public.roles(
    name varchar(50) not null,
    hierarchy_level int not null,
    account_id uuid references public.accounts(id) on delete cascade,
    unique(name, account_id),
    primary key (name)
);

grant select on table public.roles to authenticated, service_role;

-- define the system role uuid as a static UUID to be used as a default
-- account_id for system roles when the account_id is null. Useful for constraints.
create or replace function kit.get_system_role_uuid()
    returns uuid
    as $$
begin
    return 'fd4f287c-762e-42b7-8207-b1252f799670';
end; $$ language plpgsql immutable;

grant execute on function kit.get_system_role_uuid() to authenticated, service_role;

create unique index idx_unique_hierarchy_per_account
    on public.roles (hierarchy_level, coalesce(account_id, kit.get_system_role_uuid()));

create unique index idx_unique_name_per_account
    on public.roles (name, coalesce(account_id, kit.get_system_role_uuid()));

create or replace function kit.check_non_personal_account_roles()
    returns trigger
    as $$
begin
    if new.account_id is not null and(
        select
            is_personal_account
        from
            public.accounts
        where
            id = new.account_id) then
        raise exception 'Roles cannot be created for personal accounts';
    end if;

    return new;
end; $$ language plpgsql;

create constraint trigger tr_check_non_personal_account_roles
    after insert or update on public.roles
    for each row
    execute procedure kit.check_non_personal_account_roles();

-- Seed the roles table with default roles 'owner' and
--   'member'
insert into public.roles(
    name,
    hierarchy_level)
values (
    'owner',
    1);

insert into public.roles(
    name,
    hierarchy_level)
values (
    'member',
    2);

-- RLS
alter table public.roles enable row level security;

/*
 * -------------------------------------------------------
 * Section: Memberships
 * We create the schema for the memberships. Memberships are the memberships for an account. For example, a user might be a member of an account with the role 'owner'.
 * -------------------------------------------------------
 */
-- Account Memberships table
create table if not exists public.accounts_memberships(
    user_id uuid references auth.users on delete cascade not null,
    account_id uuid references public.accounts(id) on delete cascade not null,
    account_role varchar(50) references public.roles(name) not null,
    created_at timestamptz default current_timestamp not null,
    updated_at timestamptz default current_timestamp not null,
    created_by uuid references auth.users,
    updated_by uuid references auth.users,
    primary key (user_id, account_id)
);

comment on table public.accounts_memberships is 'The memberships for an account';

comment on column public.accounts_memberships.account_id is 'The account the membership is for';

comment on column public.accounts_memberships.account_role is 'The role for the membership';

-- Open up access to accounts_memberships table for authenticated users
--   and service_role
grant select, insert, update, delete on table
    public.accounts_memberships to service_role;

-- Enable RLS on the accounts_memberships table
alter table public.accounts_memberships enable row level security;

-- Trigger to prevent a primary owner from being removed from an account
create or replace function kit.prevent_account_owner_membership_delete()
    returns trigger
    as $$
begin
    if exists(
        select
            1
        from
            public.accounts
        where
            id = old.account_id
            and primary_owner_user_id = old.user_id) then
    raise exception 'The primary account owner cannot be removed from the account membership list';

end if;

    return old;

end;

$$
language plpgsql;

create or replace trigger prevent_account_owner_membership_delete_check
    before delete on public.accounts_memberships for each row
    execute function kit.prevent_account_owner_membership_delete();

-- Functions
create or replace function public.has_role_on_account(account_id
    uuid, account_role varchar(50) default null)
    returns boolean
    language sql
    security definer
    set search_path = public
    as $$
    select
        exists(
            select
                1
            from
                public.accounts_memberships membership
            where
                membership.user_id = auth.uid()
                and membership.account_id = has_role_on_account.account_id
                and(membership.account_role = has_role_on_account.account_role
                    or has_role_on_account.account_role is null));
$$;

grant execute on function public.has_role_on_account(uuid, varchar)
    to authenticated;

-- Function to check if a user is a team member of an account or not
create or replace function public.is_team_member(account_id uuid,
    user_id uuid)
    returns boolean
    language sql
    security definer
    set search_path = public
    as $$
    select
        exists(
            select
                1
            from
                public.accounts_memberships membership
            where
                public.has_role_on_account(account_id)
                and membership.user_id = is_team_member.user_id
                and membership.account_id = is_team_member.account_id);
$$;

grant execute on function public.is_team_member(uuid, uuid) to authenticated;


-- SELECT(roles): authenticated users can query roles if the role is public
--  or the user has a role on the account the role is for
create policy roles_read on public.roles
    for select to authenticated
        using (
            account_id is null
            or public.has_role_on_account(account_id)
        );

--    Function to check if a user can remove a member from an account
create or replace function
    kit.can_remove_account_member(target_team_account_id uuid,
    user_id uuid)
    returns boolean
    as $$
declare
    permission_granted boolean;
    target_user_hierarchy_level int;
    current_user_hierarchy_level int;
begin
    -- validate the auth user has the required permission on the account
    --    to manage members of the account
    select
	public.has_permission(auth.uid(), target_team_account_id,
	    'members.manage'::app_permissions) into
	    permission_granted;

    if not permission_granted then
        raise exception 'You do not have permission to remove a member from this account';

    end if;
    -- users cannot remove themselves from the account with this function
    if can_remove_account_member.user_id = auth.uid() then
        raise exception 'You cannot remove yourself from the account';

    end if;

    select
        hierarchy_level into target_user_hierarchy_level
    from
        public.roles
    where
        name = target_user_role;

    select
        hierarchy_level into current_user_hierarchy_level
    from
        public.roles
    where
        name =(
            select
                account_role
            from
                public.accounts_memberships
            where
                account_id = target_team_account_id
                and user_id = auth.uid());
    -- check if the current user has a higher hierarchy level than the
    --   target user
    if current_user_hierarchy_level <= target_user_hierarchy_level then
        raise exception 'You do not have permission to remove this user from the account';

    end if;

    return true;

end;

$$
language plpgsql;

grant execute on function kit.can_remove_account_member(uuid, uuid)
    to authenticated, service_role;

-- RLS
-- SELECT: Users can read their team members account memberships
create policy accounts_memberships_read_self on public.accounts_memberships
    for select to authenticated
        using (user_id = auth.uid());

-- SELECT: Users can read their team members account memberships
create policy accounts_memberships_team_read on public.accounts_memberships
    for select to authenticated
        using (is_team_member(account_id, user_id));

-- RLS on the accounts table
--    SELECT: Users can read the team accounts they are a member of
create policy accounts_read_team on public.accounts
    for select to authenticated
        using (has_role_on_account(id));

-- DELETE: Users can remove themselves from an account
create policy accounts_memberships_delete_self on public.accounts_memberships
    for delete to authenticated
        using (user_id = auth.uid());

-- DELETE: Users with the required role can remove members from an account
create policy accounts_memberships_delete on public.accounts_memberships
    for delete to authenticated
        using (kit.can_remove_account_member(account_id, user_id));

-- SELECT (public.accounts): Team members can read accounts of the team
--   they are a member of
create policy accounts_team_read on public.accounts
    for select to authenticated
        using (exists (
            select
                1
            from
                public.accounts_memberships as membership
            where
                public.is_team_member(membership.account_id, id)));

/*
 * -------------------------------------------------------
 * Section: Account Roles
 * We create the schema for the account roles. Account roles are the roles for an account.
 * -------------------------------------------------------
 */
-- Account Roles table
create table public.account_roles(
    id bigint generated by default as identity primary key,
    account_id uuid references public.accounts(id) on delete cascade not null,
    role varchar(50) references public.roles(name) not null,
    unique (account_id, role)
);

comment on table public.account_roles is 'The roles for an account';

comment on column public.account_roles.account_id is 'The account the role is for';

comment on column public.account_roles.role is 'The role for the account';

-- Open up access to account roles
grant select, insert, update, delete on table public.account_roles to
    authenticated, service_role;

-- Enable RLS on the account_roles table
alter table public.account_roles enable row level security;

-- RLS
--    SELECT: Users can read account roles of an account they are a
--   member of
create policy account_roles_read_self on public.account_roles
    for select to authenticated
        using (has_role_on_account(account_id));


/*
 * -------------------------------------------------------
 * Section: Role Permissions
 * We create the schema for the role permissions. Role permissions are the permissions for a role.
 * For example, the 'owner' role might have the 'roles.manage' permission.
 * -------------------------------------------------------
 */
-- Create table for roles permissions
create table if not exists public.role_permissions(
    id bigint generated by default as identity primary key,
    role varchar(50) references public.roles(name) not null,
    permission app_permissions not null,
    unique (role, permission)
);

comment on table public.role_permissions is 'The permissions for a role';

comment on column public.role_permissions.role is 'The role the permission is for';

comment on column public.role_permissions.permission is 'The permission for the role';

-- Open up access to accounts
grant select, insert, update, delete on table public.role_permissions
    to authenticated, service_role;

-- Create a function to check if a user has a permission
create function public.has_permission(user_id uuid, account_id uuid,
    permission_name app_permissions)
    returns boolean
    as $$
begin
    return exists(
        select
            1
        from
            public.accounts_memberships
	    join public.role_permissions on
		accounts_memberships.account_role =
		role_permissions.role
        where
            accounts_memberships.user_id = has_permission.user_id
            and accounts_memberships.account_id = has_permission.account_id
            and role_permissions.permission = has_permission.permission_name);

end;

$$
language plpgsql;

grant execute on function public.has_permission(uuid, uuid,
    public.app_permissions) to authenticated, service_role;

create or replace function
    public.has_more_elevated_role(target_user_id uuid,
    target_account_id uuid, role_name varchar)
    returns boolean
    as $$
declare
    declare is_primary_owner boolean;
    user_role_hierarchy_level int;
    target_role_hierarchy_level int;
begin
    select
        exists (
            select
                1
            from
                public.accounts
            where
                id = target_account_id
                and primary_owner_user_id = target_user_id) into is_primary_owner;
    -- If the user is the primary owner, they have the highest role and can
    --   perform any action
    if is_primary_owner then
        return true;

    end if;

    select
        hierarchy_level into user_role_hierarchy_level
    from
        public.roles
    where
        name =(
            select
                account_role
            from
                public.accounts_memberships
            where
                account_id = target_account_id
                and target_user_id = user_id);

    select
        hierarchy_level into target_role_hierarchy_level
    from
        public.roles
    where
        name = role_name;
    -- If the user's role is higher than the target role, they can perform
    --   the action
    return user_role_hierarchy_level < target_role_hierarchy_level;

end;

$$
language plpgsql;

grant execute on function public.has_more_elevated_role(uuid, uuid,
    varchar) to authenticated, service_role;

-- Enable RLS on the role_permissions table
alter table public.role_permissions enable row level security;

-- RLS
-- Authenticated Users can read their permissions
create policy role_permissions_read on public.role_permissions
    for select to authenticated
        using (true);


/*
 * -------------------------------------------------------
 * Section: Invitations
 * We create the schema for the invitations. Invitations are the invitations for an account sent to a user to join the account.
 * -------------------------------------------------------
 */
create table if not exists public.invitations(
    id serial primary key,
    email varchar(255) not null,
    account_id uuid references public.accounts(id) on delete cascade not null,
    invited_by uuid references auth.users on delete cascade not null,
    role varchar(50) references public.roles(name) not null,
    invite_token varchar(255) unique not null,
    created_at timestamptz default current_timestamp not null,
    updated_at timestamptz default current_timestamp not null,
    expires_at timestamptz default current_timestamp + interval
	'7 days' not null
);

comment on table public.invitations is 'The invitations for an account';

comment on column public.invitations.account_id is 'The account the invitation is for';

comment on column public.invitations.invited_by is 'The user who invited the user';

comment on column public.invitations.role is 'The role for the invitation';

comment on column public.invitations.invite_token is 'The token for the invitation';

-- Open up access to invitations table for authenticated users and
--   service_role
grant select, insert, update, delete on table public.invitations to
    service_role;

-- Enable RLS on the invitations table
alter table public.invitations enable row level security;

create or replace function check_organization_account()
    returns trigger
    as $$
begin
    if(
        select
            is_personal_account
        from
            public.accounts
        where
            id = new.account_id) then
        raise exception 'Account must be an organization account';

    end if;

    return NEW;

end;

$$
language plpgsql;

create trigger only_organization_accounts_check
    before insert or update on public.invitations for each row
    execute procedure check_organization_account();

-- RLS
--    SELECT: Users can read invitations to users of an account they
-- are
--   a member of
create policy invitations_read_self on public.invitations
    for select to authenticated
        using (has_role_on_account(account_id));

-- INSERT: Users can create invitations to users of an account they are
--   a member of
--     and have the 'invites.manage' permission AND the target role is
--  not
--   higher than the user's role
create policy invitations_create_self on public.invitations
    for insert to authenticated
        with check (
public.has_permission(
        auth.uid(), account_id, 'invites.manage' ::app_permissions)
        and public.has_more_elevated_role(
        auth.uid(), account_id, role));

-- UPDATE: Users can update invitations to users of an account they are
--   a member of
--     and have the 'invites.manage' permission AND the target role is
--  not
--   higher than the user's role
create policy invitations_update on public.invitations
    for update to authenticated
	using (public.has_permission(auth.uid(), account_id,
	    'invites.manage'::app_permissions)
            and public.has_more_elevated_role(auth.uid(), account_id, role))
	    with check (public.has_permission(auth.uid(), account_id,
		'invites.manage'::app_permissions)
            and public.has_more_elevated_role(auth.uid(), account_id, role));

-- DELETE: Users can delete invitations to users of an account they are
--   a member of
--    and have the 'invites.manage' permission
create policy invitations_delete on public.invitations
    for delete to authenticated
        using (has_role_on_account(account_id)
	    and public.has_permission(auth.uid(), account_id,
		'invites.manage'::app_permissions));

-- Functions
-- Function to accept an invitation to an account
create or replace function accept_invitation(token text, user_id uuid)
    returns uuid
    as $$
declare
    target_account_id uuid;
    target_role varchar(50);
begin
    select
        account_id,
        role into target_account_id,
        target_role
    from
        public.invitations
    where
        invite_token = token
        and expires_at > now();

    if not found then
        raise exception 'Invalid or expired invitation token';

    end if;

    insert into public.accounts_memberships(
        user_id,
        account_id,
        account_role)
    values (
        accept_invitation.user_id,
        target_account_id,
        target_role);

    delete from public.invitations
    where invite_token = token;

    return target_account_id;
end;

$$
language plpgsql;

grant execute on function accept_invitation(text, uuid) to service_role;


/*
 * -------------------------------------------------------
 * Section: Billing Customers
 * We create the schema for the billing customers. Billing customers are the customers for an account in the billing provider. For example, a user might have a customer in the billing provider with the customer ID 'cus_123'.
 * -------------------------------------------------------
 */
-- Account Subscriptions table
create table public.billing_customers(
    account_id uuid references public.accounts(id) on delete cascade not null,
    id serial primary key,
    email text,
    provider public.billing_provider not null,
    customer_id text not null,
    unique (account_id, customer_id, provider)
);

comment on table public.billing_customers is 'The billing customers for an account';

comment on column public.billing_customers.account_id is 'The account the billing customer is for';

comment on column public.billing_customers.provider is 'The provider of the billing customer';

comment on column public.billing_customers.customer_id is 'The customer ID for the billing customer';

-- Open up access to billing_customers table for authenticated users
--   and service_role
grant select, insert, update, delete on table
    public.billing_customers to service_role;

-- Enable RLS on billing_customers table
alter table public.billing_customers enable row level security;

grant select on table public.billing_customers to authenticated;

-- RLS
--    SELECT: Users can read account subscriptions on an account they
--  are
--   a member of
create policy billing_customers_read_self on public.billing_customers
    for select to authenticated
        using (account_id = auth.uid()
            or has_role_on_account(account_id));

/*
 * -------------------------------------------------------
 * Section: Subscriptions
 * We create the schema for the subscriptions. Subscriptions are the subscriptions for an account to a product. For example, a user might have a subscription to a product with the status 'active'.
 * -------------------------------------------------------
 */
-- Subscriptions table
create table if not exists public.subscriptions(
    id text not null primary key,
    account_id uuid references public.accounts(id) on delete cascade not null,
    billing_customer_id int references public.billing_customers on
	delete cascade not null,
    status public.subscription_status not null,
    active bool not null,
    billing_provider public.billing_provider not null,
    cancel_at_period_end bool not null,
    currency varchar(3) not null,
    created_at timestamptz not null default current_timestamp,
    updated_at timestamptz not null default current_timestamp,
    period_starts_at timestamptz not null,
    period_ends_at timestamptz not null,
    trial_starts_at timestamptz,
    trial_ends_at timestamptz
);

comment on table public.subscriptions is 'The subscriptions for an account';

comment on column public.subscriptions.account_id is 'The account the subscription is for';

comment on column public.subscriptions.billing_provider is 'The provider of the subscription';

comment on column public.subscriptions.cancel_at_period_end is 'Whether the subscription will be canceled at the end of the period';

comment on column public.subscriptions.currency is 'The currency for the subscription';

comment on column public.subscriptions.status is 'The status of the subscription';

comment on column public.subscriptions.period_starts_at is 'The start of the current period for the subscription';

comment on column public.subscriptions.period_ends_at is 'The end of the current period for the subscription';

comment on column public.subscriptions.trial_starts_at is 'The start of the trial period for the subscription';

comment on column public.subscriptions.trial_ends_at is 'The end of the trial period for the subscription';

-- Open up access to subscriptions table for authenticated users and
--   service_role
grant select, insert, update, delete on table public.subscriptions to
    service_role;

grant select on table public.subscriptions to authenticated;

-- Enable RLS on subscriptions table
alter table public.subscriptions enable row level security;

-- RLS
--    SELECT: Users can read account subscriptions on an account they
--  are
--   a member of
create policy subscriptions_read_self on public.subscriptions
    for select to authenticated
        using (
            (has_role_on_account(account_id) and public.is_set('enable_team_account_billing'))
            or (account_id = auth.uid() and public.is_set('enable_account_billing'))
         );

-- Functions
create or replace function
    public.upsert_subscription(target_account_id uuid,
    target_customer_id varchar(255), target_subscription_id text,
    active bool, status public.subscription_status, billing_provider
    public.billing_provider, cancel_at_period_end bool, currency
    varchar(3), period_starts_at timestamptz, period_ends_at
    timestamptz, line_items jsonb, trial_starts_at timestamptz
    default null, trial_ends_at timestamptz default null)
    returns public.subscriptions
    as $$
declare
    new_subscription public.subscriptions;
    new_billing_customer_id int;
begin
    insert into public.billing_customers(
        account_id,
        provider,
        customer_id)
    values (
        target_account_id,
        billing_provider,
        target_customer_id)
on conflict (
    account_id,
    provider,
    customer_id)
    do update set
        provider = excluded.provider
    returning
        id into new_billing_customer_id;

    insert into public.subscriptions(
        account_id,
        billing_customer_id,
        id,
        active,
        status,
        billing_provider,
        cancel_at_period_end,
        currency,
        period_starts_at,
        period_ends_at,
        trial_starts_at,
        trial_ends_at)
    values (
        target_account_id,
        new_billing_customer_id,
        target_subscription_id,
        active,
        status,
        billing_provider,
        cancel_at_period_end,
        currency,
        period_starts_at,
        period_ends_at,
        trial_starts_at,
        trial_ends_at)
on conflict (
    id)
    do update set
        active = excluded.active,
        status = excluded.status,
        cancel_at_period_end = excluded.cancel_at_period_end,
        currency = excluded.currency,
        period_starts_at = excluded.period_starts_at,
        period_ends_at = excluded.period_ends_at,
        trial_starts_at = excluded.trial_starts_at,
        trial_ends_at = excluded.trial_ends_at
    returning
        * into new_subscription;
    -- Upsert subscription items
    with item_data as (
        select
            (line_item ->> 'product_id')::varchar as prod_id,
            (line_item ->> 'variant_id')::varchar as var_id,
            (line_item ->> 'type')::public.subscription_item_type as type,
            (line_item ->> 'price_amount')::numeric as price_amt,
            (line_item ->> 'quantity')::integer as qty,
            (line_item ->> 'interval')::varchar as intv,
            (line_item ->> 'interval_count')::integer as intv_count
        from
            jsonb_array_elements(line_items) as line_item)
    insert into public.subscription_items(
        subscription_id,
        product_id,
        variant_id,
        type,
        price_amount,
        quantity,
        interval,
        interval_count)
    select
        target_subscription_id,
        prod_id,
        var_id,
        type,
        price_amt,
        qty,
        intv,
        intv_count
    from
        item_data
    on conflict (subscription_id,
        product_id,
        variant_id)
        do update set
            price_amount = excluded.price_amount,
            quantity = excluded.quantity,
            interval = excluded.interval,
            interval_count = excluded.interval_count;

    return new_subscription;

end;

$$
language plpgsql;

grant execute on function public.upsert_subscription(uuid, varchar,
    text, bool, public.subscription_status, public.billing_provider,
    bool, varchar, timestamptz, timestamptz, jsonb, timestamptz,
    timestamptz) to service_role;


/* -------------------------------------------------------
 * Section: Subscription Items
 * We create the schema for the subscription items. Subscription items are the items in a subscription.
 * For example, a subscription might have a subscription item with the product ID 'prod_123' and the variant ID 'var_123'.
 * -------------------------------------------------------
 */
create table if not exists public.subscription_items(
    subscription_id text references public.subscriptions(id) on
	delete cascade not null,
    product_id varchar(255) not null,
    variant_id varchar(255) not null,
    type public.subscription_item_type not null,
    price_amount numeric,
    quantity integer not null default 1,
    interval varchar(255) not null,
    interval_count integer not null check (interval_count > 0),
    created_at timestamptz not null default current_timestamp,
    updated_at timestamptz not null default current_timestamp,
    unique (subscription_id, product_id, variant_id)
);

comment on table public.subscription_items is 'The items in a subscription';

comment on column public.subscription_items.subscription_id is 'The subscription the item is for';

comment on column public.subscription_items.product_id is 'The product ID for the item';

comment on column public.subscription_items.variant_id is 'The variant ID for the item';

comment on column public.subscription_items.price_amount is 'The price amount for the item';

comment on column public.subscription_items.quantity is 'The quantity of the item';

comment on column public.subscription_items.interval is 'The interval for the item';

comment on column public.subscription_items.interval_count is 'The interval count for the item';

comment on column public.subscription_items.created_at is 'The creation date of the item';

comment on column public.subscription_items.updated_at is 'The last update date of the item';

-- Open up access to subscription_items table for authenticated users
--   and service_role
grant select on table public.subscription_items to authenticated,
    service_role;

grant insert, update, delete on table public.subscription_items to
    service_role;

-- RLS
alter table public.subscription_items enable row level security;

-- SELECT: Users can read subscription items on a subscription they are
--   a member of
create policy subscription_items_read_self on public.subscription_items
    for select to authenticated
        using (exists (
            select
                1
            from
                public.subscriptions
            where
		id = subscription_id and (account_id = auth.uid() or
		    has_role_on_account(account_id))));

/**
 * -------------------------------------------------------
 * Section: Orders
 * We create the schema for the subscription items. Subscription items are the items in a subscription.
 * For example, a subscription might have a subscription item with the product ID 'prod_123' and the variant ID 'var_123'.
 * -------------------------------------------------------
 */
create table if not exists public.orders(
    id text not null primary key,
    account_id uuid references public.accounts(id) on delete cascade not null,
    billing_customer_id int references public.billing_customers on
	delete cascade not null,
    status public.payment_status not null,
    billing_provider public.billing_provider not null,
    total_amount numeric not null,
    currency varchar(3) not null,
    created_at timestamptz not null default current_timestamp,
    updated_at timestamptz not null default current_timestamp
);

-- Open up access to subscription_items table for authenticated users
--   and service_role
grant select on table public.orders to authenticated;

grant select, insert, update, delete on table public.orders to service_role;

-- RLS
alter table public.orders enable row level security;

-- SELECT
--    Users can read orders on an account they are a member of or the
--   account is their own
create policy orders_read_self on public.orders
    for select to authenticated
        using ((account_id = auth.uid() and public.is_set('enable_account_billing'))
            or (has_role_on_account(account_id) and public.is_set('enable_team_account_billing')));


/**
 * -------------------------------------------------------
 * Section: Order Items
 * We create the schema for the order items. Order items are the items in an order.
 * -------------------------------------------------------
 */
create table if not exists public.order_items(
    order_id text references public.orders(id) on delete cascade not null,
    product_id text not null,
    variant_id text not null,
    price_amount numeric,
    quantity integer not null default 1,
    created_at timestamptz not null default current_timestamp,
    updated_at timestamptz not null default current_timestamp,
    unique (order_id, product_id, variant_id)
);

-- Open up access to order_items table for authenticated users and
--   service_role
grant select on table public.order_items to authenticated, service_role;

-- RLS
alter table public.order_items enable row level security;

-- SELECT
-- Users can read order items on an order they are a member of
create policy order_items_read_self on public.order_items
    for select to authenticated
        using (exists (
            select
                1
            from
                public.orders
            where
		id = order_id and (account_id = auth.uid() or
		    has_role_on_account(account_id))));

-- Functions
create or replace function public.upsert_order(target_account_id
    uuid, target_customer_id varchar(255), target_order_id text,
    status public.payment_status, billing_provider
    public.billing_provider, total_amount numeric, currency
    varchar(3), line_items jsonb)
    returns public.orders
    as $$
declare
    new_order public.orders;
    new_billing_customer_id int;
begin
    insert into public.billing_customers(
        account_id,
        provider,
        customer_id)
    values (
        target_account_id,
        billing_provider,
        target_customer_id)
on conflict (
    account_id,
    provider,
    customer_id)
    do update set
        provider = excluded.provider
    returning
        id into new_billing_customer_id;

    insert into public.orders(
        account_id,
        billing_customer_id,
        id,
        status,
        billing_provider,
        total_amount,
        currency)
    values (
        target_account_id,
        new_billing_customer_id,
        target_order_id,
        status,
        billing_provider,
        total_amount,
        currency)
on conflict (
    id)
    do update set
        status = excluded.status,
        total_amount = excluded.total_amount,
        currency = excluded.currency
    returning
        * into new_order;

    insert into public.order_items(
        order_id,
        product_id,
        variant_id,
        price_amount,
        quantity)
    select
        target_order_id,
(line_item ->> 'product_id')::varchar,
(line_item ->> 'variant_id')::varchar,
(line_item ->> 'price_amount')::numeric,
(line_item ->> 'quantity')::integer
    from
        jsonb_array_elements(line_items) as line_item
on conflict (order_id,
    product_id,
    variant_id)
    do update set
        price_amount = excluded.price_amount,
        quantity = excluded.quantity;

    return new_order;

end;

$$
language plpgsql;

grant execute on function public.upsert_order(uuid, varchar, text,
    public.payment_status, public.billing_provider, numeric, varchar,
    jsonb) to service_role;


/*
 * -------------------------------------------------------
 * Section: Functions
 * -------------------------------------------------------
 */
-- Create a function to slugify a string
create or replace function kit.slugify("value" text)
    returns text
    as $$
    -- removes accents (diacritic signs) from a given string --
    with "unaccented" as(
        select
            unaccent("value") as "value"
),
-- lowercases the string
"lowercase" as(
    select
        lower("value") as "value"
    from
        "unaccented"
),
-- remove single and double quotes
"removed_quotes" as(
    select
	regexp_replace("value", '[''"]+', '',
	    'gi') as "value"
    from
        "lowercase"
),
-- replaces anything that's not a letter, number, hyphen('-'), or underscore('_') with a hyphen('-')
"hyphenated" as(
    select
	regexp_replace("value", '[^a-z0-9\\-_]+', '-',
	    'gi') as "value"
    from
        "removed_quotes"
),
-- trims hyphens('-') if they exist on the head or tail of
--   the string
"trimmed" as(
    select
	regexp_replace(regexp_replace("value", '\-+$',
	    ''), '^\-', '') as "value" from "hyphenated"
)
        select
            "value"
        from
            "trimmed";
$$
language SQL
strict immutable;

grant execute on function kit.slugify(text) to service_role, authenticated;

create function kit.set_slug_from_account_name()
    returns trigger
    language plpgsql
    as $$
declare
    sql_string varchar;
    tmp_slug varchar;
    increment integer;
    tmp_row record;
    tmp_row_count integer;
begin
    tmp_row_count = 1;

    increment = 0;

    while tmp_row_count > 0 loop
        if increment > 0 then
            tmp_slug = kit.slugify(new.name || ' ' || increment::varchar);

        else
            tmp_slug = kit.slugify(new.name);

        end if;

	sql_string = format('select count(1) cnt from accounts where slug = ''' || tmp_slug ||
	    '''; ');

        for tmp_row in execute (sql_string)
            loop
                raise notice '%', tmp_row;

                tmp_row_count = tmp_row.cnt;

            end loop;

        increment = increment +1;

    end loop;

    new.slug := tmp_slug;

    return NEW;

end
$$;

-- Create a trigger to set the slug from the account name
create trigger "set_slug_from_account_name"
    before insert on public.accounts for each row
    when(NEW.name is not null and NEW.slug is null and
	NEW.is_personal_account = false)
    execute procedure kit.set_slug_from_account_name();

-- Create a trigger when a name is updated to update the slug
create trigger "update_slug_from_account_name"
    before update on public.accounts for each row
    when(NEW.name is not null and NEW.name <> OLD.name and
	NEW.is_personal_account = false)
    execute procedure kit.set_slug_from_account_name();

-- Create a function to setup a new user with a personal account
create function kit.setup_new_user()
    returns trigger
    language plpgsql
    security definer
    set search_path = public
    as $$
declare
    user_name text;
begin
    if new.raw_user_meta_data ->> 'display_name' is not null then
        user_name := new.raw_user_meta_data ->> 'display_name';

    end if;

    if user_name is null and new.email is not null then
        user_name := split_part(new.email, '@', 1);

    end if;

    if user_name is null then
        user_name := '';

    end if;

    insert into public.accounts(
        id,
        primary_owner_user_id,
        name,
        is_personal_account,
        email)
    values (
        new.id,
        new.id,
        user_name,
        true,
        new.email);

    return new;

end;

$$;

-- trigger the function every time a user is created
create trigger on_auth_user_created
    after insert on auth.users for each row
    execute procedure kit.setup_new_user();

create or replace function public.create_account(account_name text)
    returns public.accounts
    as $$
declare
    new_account public.accounts;
begin
    insert into public.accounts(
        name,
        is_personal_account)
    values (
        account_name,
        false)
returning
    * into new_account;

    return new_account;

end;

$$
language plpgsql;

grant execute on function public.create_account(text) to
    authenticated, service_role;

-- RLS
-- Authenticated users can create organization accounts
create policy create_org_account on public.accounts
    for insert to authenticated
        with check (
public.is_set(
        'enable_team_accounts')
        and public.accounts.is_personal_account = false);

-- Function: create an invitation to an account
create or replace function public.create_invitation(account_id uuid,
    email text, role varchar(50))
    returns public.invitations
    as $$
declare
    new_invitation public.invitations;
    invite_token text;
begin
    invite_token := extensions.uuid_generate_v4();

    insert into public.invitations(
        email,
        account_id,
        invited_by,
        role,
        invite_token)
    values (
        email,
        account_id,
        auth.uid(),
        role,
        invite_token)
returning
    * into new_invitation;

    return new_invitation;

end;

$$
language plpgsql;

--
-- VIEW "user_account_workspace":
-- we create a view to load the general app data for the authenticated
-- user which includes the user's accounts, memberships, and roles, and relative subscription status
create or replace view public.user_account_workspace as
select
    accounts.id as id,
    accounts.name as name,
    accounts.picture_url as picture_url,
    subscriptions.status as subscription_status
from
    public.accounts
    left join public.subscriptions on accounts.id = subscriptions.account_id
where
    primary_owner_user_id = auth.uid()
    and accounts.is_personal_account = true;

grant select on public.user_account_workspace to authenticated, service_role;

--
-- VIEW "user_accounts":
-- we create a view to load the user's accounts and memberships
-- useful to display the user's accounts in the app
create or replace view public.user_accounts as
select
    accounts.id as id,
    accounts.name as name,
    accounts.picture_url as picture_url,
    accounts.slug as slug,
    accounts_memberships.account_role as role
from
    public.accounts
    join public.accounts_memberships on accounts.id =
	accounts_memberships.account_id
where
    accounts_memberships.user_id = auth.uid()
    and accounts.is_personal_account = false;

grant select on public.user_accounts to authenticated, service_role;

--
-- Function: get the account workspace for an organization account
-- to load all the required data for the authenticated user within the account scope
create or replace function
    public.organization_account_workspace(account_slug text)
    returns table(
        id uuid,
        name varchar(255),
        picture_url varchar(1000),
        slug text,
        role varchar(50),
        role_hierarchy_level int,
        primary_owner_user_id uuid,
        subscription_status public.subscription_status,
        permissions public.app_permissions[]
    )
    as $$
begin
    return QUERY
    select
        accounts.id,
        accounts.name,
        accounts.picture_url,
        accounts.slug,
        accounts_memberships.account_role,
        roles.hierarchy_level,
        accounts.primary_owner_user_id,
        subscriptions.status,
        array_agg(role_permissions.permission)
    from
        public.accounts
	join public.accounts_memberships on accounts.id =
	    accounts_memberships.account_id
        left join public.subscriptions on accounts.id = subscriptions.account_id
	left join public.role_permissions on
	    accounts_memberships.account_role = role_permissions.role
        left join public.roles on accounts_memberships.account_role = roles.name
    where
        accounts.slug = account_slug
        and public.accounts_memberships.user_id = auth.uid()
    group by
        accounts.id,
        accounts_memberships.account_role,
        subscriptions.status,
        roles.hierarchy_level;

end;

$$
language plpgsql;

grant execute on function public.organization_account_workspace(text)
    to authenticated, service_role;

-- Functions: get account members
create or replace function public.get_account_members(account_slug text)
    returns table(
        id uuid,
        user_id uuid,
        account_id uuid,
        role varchar(50),
        role_hierarchy_level int,
        primary_owner_user_id uuid,
        name varchar,
        email varchar,
        picture_url varchar,
        created_at timestamptz,
        updated_at timestamptz)
    language plpgsql
    as $$
begin
    return QUERY
    select
        acc.id,
        am.user_id,
        am.account_id,
        am.account_role,
        r.hierarchy_level,
        a.primary_owner_user_id,
        acc.name,
        acc.email,
        acc.picture_url,
        am.created_at,
        am.updated_at
    from
        public.accounts_memberships am
        join public.accounts a on a.id = am.account_id
        join public.accounts acc on acc.id = am.user_id
        join public.roles r on r.name = am.account_role
    where
        a.slug = account_slug;

end;

$$;

grant execute on function public.get_account_members(text) to
    authenticated, service_role;

create or replace function public.get_account_invitations(account_slug text)
    returns table(
        id integer,
        email varchar(255),
        account_id uuid,
        invited_by uuid,
        role varchar(50),
        created_at timestamptz,
        updated_at timestamptz,
        expires_at timestamptz,
        inviter_name varchar,
        inviter_email varchar
    )
    as $$
begin
    return query
    select
        invitation.id,
        invitation.email,
        invitation.account_id,
        invitation.invited_by,
        invitation.role,
        invitation.created_at,
        invitation.updated_at,
        invitation.expires_at,
        account.name,
        account.email
    from
        public.invitations as invitation
        join public.accounts as account on invitation.account_id = account.id
    where
        account.slug = account_slug;

end;

$$
language plpgsql;

grant execute on function public.get_account_invitations(text) to
    authenticated, service_role;

create type kit.invitation as (
    email text,
    role varchar( 50));

create or replace function
    public.add_invitations_to_account(account_slug text, invitations
    kit.invitation[])
    returns public.invitations[]
    as $$
declare
    new_invitation public.invitations;
    all_invitations public.invitations[] := array[]::public.invitations[];
    invite_token text;
    email text;
    role varchar(50);
begin
    FOREACH email,
    role in array invitations loop
        invite_token := extensions.uuid_generate_v4();

        insert into public.invitations(
            email,
            account_id,
            invited_by,
            role,
            invite_token)
        values (
            email,
(
                select
                    id
                from
                    public.accounts
                where
                    slug = account_slug), auth.uid(), role, invite_token)
    returning
        * into new_invitation;

        all_invitations := array_append(all_invitations, new_invitation);

    end loop;

    return all_invitations;

end;

$$
language plpgsql;

grant execute on function public.add_invitations_to_account(text,
    kit.invitation[]) to authenticated, service_role;

-- Storage
-- Account Image
insert into storage.buckets(
    id,
    name,
    PUBLIC)
values (
    'account_image',
    'account_image',
    true);

create or replace function kit.get_storage_filename_as_uuid(name text)
    returns uuid
    as $$
begin
    return replace(storage.filename(name), concat('.',
	storage.extension(name)), '')::uuid;

end;

$$
language plpgsql;

grant execute on function kit.get_storage_filename_as_uuid(text) to
    authenticated, service_role;

-- RLS policies for storage
create policy account_image on storage.objects
    for all
        using (bucket_id = 'account_image'
            and kit.get_storage_filename_as_uuid(name) = auth.uid()
            or public.has_role_on_account(kit.get_storage_filename_as_uuid(name)))
            with check (bucket_id = 'account_image'
            and kit.get_storage_filename_as_uuid(name) = auth.uid()
	    or public.has_permission(auth.uid(),
		kit.get_storage_filename_as_uuid(name),
		'settings.manage'));