/*
 * -------------------------------------------------------
 * Sitzungsprotokolle (Meeting Protocols) Schema
 * Meeting minutes, agenda items, tasks, attachments
 * -------------------------------------------------------
 */

-- =====================================================
-- 1. Extend app_permissions
-- (Moved to 20260411900001_fischerei_enum_values.sql)
-- =====================================================

-- =====================================================
-- 2. Enums
-- =====================================================

CREATE TYPE public.meeting_item_status AS ENUM(
  'offen',
  'in_bearbeitung',
  'erledigt',
  'vertagt'
);

-- =====================================================
-- 3. meeting_protocols
-- =====================================================

CREATE TABLE IF NOT EXISTS public.meeting_protocols (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  account_id uuid NOT NULL REFERENCES public.accounts(id) ON DELETE CASCADE,

  -- Identity
  title text NOT NULL,
  protocol_number text,

  -- Schedule
  meeting_date date NOT NULL,
  meeting_time time,
  end_time time,
  location text,

  -- Participants
  chair text,
  recorder text,
  attendees jsonb NOT NULL DEFAULT '[]'::jsonb,
  absent jsonb NOT NULL DEFAULT '[]'::jsonb,

  -- Content
  summary text,

  -- Status workflow
  status text NOT NULL DEFAULT 'draft'
    CHECK (status IN ('draft', 'review', 'approved', 'archived')),

  -- Follow-up
  next_meeting_date date,

  -- Flags
  is_archived boolean NOT NULL DEFAULT false,

  -- Meta
  created_by uuid REFERENCES auth.users(id) ON DELETE SET NULL,
  updated_by uuid REFERENCES auth.users(id) ON DELETE SET NULL,
  created_at timestamptz NOT NULL DEFAULT now(),
  updated_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX ix_meeting_protocols_account ON public.meeting_protocols(account_id);
CREATE INDEX ix_meeting_protocols_date ON public.meeting_protocols(account_id, meeting_date DESC);
CREATE INDEX ix_meeting_protocols_status ON public.meeting_protocols(account_id, status);
CREATE INDEX ix_meeting_protocols_archived ON public.meeting_protocols(account_id, is_archived);

ALTER TABLE public.meeting_protocols ENABLE ROW LEVEL SECURITY;
REVOKE ALL ON public.meeting_protocols FROM authenticated, service_role;
GRANT SELECT, INSERT, UPDATE, DELETE ON public.meeting_protocols TO authenticated;
GRANT ALL ON public.meeting_protocols TO service_role;

CREATE POLICY meeting_protocols_select ON public.meeting_protocols FOR SELECT TO authenticated
  USING (public.has_role_on_account(account_id));
CREATE POLICY meeting_protocols_insert ON public.meeting_protocols FOR INSERT TO authenticated
  WITH CHECK (public.has_permission(auth.uid(), account_id, 'meetings.write'::public.app_permissions));
CREATE POLICY meeting_protocols_update ON public.meeting_protocols FOR UPDATE TO authenticated
  USING (public.has_permission(auth.uid(), account_id, 'meetings.write'::public.app_permissions));
CREATE POLICY meeting_protocols_delete ON public.meeting_protocols FOR DELETE TO authenticated
  USING (public.has_permission(auth.uid(), account_id, 'meetings.write'::public.app_permissions));

CREATE TRIGGER trg_meeting_protocols_updated_at
  BEFORE UPDATE ON public.meeting_protocols
  FOR EACH ROW EXECUTE FUNCTION public.update_account_settings_timestamp();

-- =====================================================
-- 4. meeting_protocol_items (agenda items / TOPs)
-- =====================================================

CREATE TABLE IF NOT EXISTS public.meeting_protocol_items (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  protocol_id uuid NOT NULL REFERENCES public.meeting_protocols(id) ON DELETE CASCADE,

  -- Ordering
  item_number integer NOT NULL DEFAULT 0,
  sort_order integer NOT NULL DEFAULT 0,

  -- Content
  title text NOT NULL,
  content text,

  -- Classification
  item_type text NOT NULL DEFAULT 'information'
    CHECK (item_type IN ('information', 'discussion', 'decision', 'task')),

  -- Decision tracking
  decision_text text,

  -- Task tracking
  status public.meeting_item_status NOT NULL DEFAULT 'offen',
  responsible_person text,
  due_date date,

  -- Meta
  created_at timestamptz NOT NULL DEFAULT now(),
  updated_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX ix_meeting_protocol_items_protocol ON public.meeting_protocol_items(protocol_id);
CREATE INDEX ix_meeting_protocol_items_status ON public.meeting_protocol_items(status);
CREATE INDEX ix_meeting_protocol_items_type ON public.meeting_protocol_items(item_type);
CREATE INDEX ix_meeting_protocol_items_due ON public.meeting_protocol_items(due_date)
  WHERE due_date IS NOT NULL AND status != 'erledigt';

ALTER TABLE public.meeting_protocol_items ENABLE ROW LEVEL SECURITY;
REVOKE ALL ON public.meeting_protocol_items FROM authenticated, service_role;
GRANT SELECT, INSERT, UPDATE, DELETE ON public.meeting_protocol_items TO authenticated;
GRANT ALL ON public.meeting_protocol_items TO service_role;

CREATE POLICY meeting_protocol_items_select ON public.meeting_protocol_items FOR SELECT TO authenticated
  USING (EXISTS (
    SELECT 1 FROM public.meeting_protocols mp
    WHERE mp.id = meeting_protocol_items.protocol_id
      AND public.has_role_on_account(mp.account_id)
  ));
CREATE POLICY meeting_protocol_items_mutate ON public.meeting_protocol_items FOR ALL TO authenticated
  USING (EXISTS (
    SELECT 1 FROM public.meeting_protocols mp
    WHERE mp.id = meeting_protocol_items.protocol_id
      AND public.has_permission(auth.uid(), mp.account_id, 'meetings.write'::public.app_permissions)
  ));

CREATE TRIGGER trg_meeting_protocol_items_updated_at
  BEFORE UPDATE ON public.meeting_protocol_items
  FOR EACH ROW EXECUTE FUNCTION public.update_account_settings_timestamp();

-- =====================================================
-- 5. meeting_protocol_attachments
-- =====================================================

CREATE TABLE IF NOT EXISTS public.meeting_protocol_attachments (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  protocol_id uuid NOT NULL REFERENCES public.meeting_protocols(id) ON DELETE CASCADE,
  item_id uuid REFERENCES public.meeting_protocol_items(id) ON DELETE SET NULL,

  -- File info
  file_name text NOT NULL,
  file_path text NOT NULL,
  file_size bigint,
  content_type text,

  -- Meta
  created_by uuid REFERENCES auth.users(id) ON DELETE SET NULL,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX ix_meeting_protocol_attachments_protocol ON public.meeting_protocol_attachments(protocol_id);
CREATE INDEX ix_meeting_protocol_attachments_item ON public.meeting_protocol_attachments(item_id)
  WHERE item_id IS NOT NULL;

ALTER TABLE public.meeting_protocol_attachments ENABLE ROW LEVEL SECURITY;
REVOKE ALL ON public.meeting_protocol_attachments FROM authenticated, service_role;
GRANT SELECT, INSERT, UPDATE, DELETE ON public.meeting_protocol_attachments TO authenticated;
GRANT ALL ON public.meeting_protocol_attachments TO service_role;

CREATE POLICY meeting_protocol_attachments_select ON public.meeting_protocol_attachments FOR SELECT TO authenticated
  USING (EXISTS (
    SELECT 1 FROM public.meeting_protocols mp
    WHERE mp.id = meeting_protocol_attachments.protocol_id
      AND public.has_role_on_account(mp.account_id)
  ));
CREATE POLICY meeting_protocol_attachments_mutate ON public.meeting_protocol_attachments FOR ALL TO authenticated
  USING (EXISTS (
    SELECT 1 FROM public.meeting_protocols mp
    WHERE mp.id = meeting_protocol_attachments.protocol_id
      AND public.has_permission(auth.uid(), mp.account_id, 'meetings.write'::public.app_permissions)
  ));

-- =====================================================
-- 6. View: open_meeting_tasks
-- =====================================================

CREATE OR REPLACE VIEW public.open_meeting_tasks AS
SELECT
  mpi.id AS item_id,
  mpi.protocol_id,
  mp.account_id,
  mp.title AS protocol_title,
  mp.meeting_date,
  mpi.item_number,
  mpi.title AS task_title,
  mpi.content AS task_description,
  mpi.responsible_person,
  mpi.due_date,
  mpi.status,
  CASE
    WHEN mpi.due_date < current_date AND mpi.status != 'erledigt' THEN true
    ELSE false
  END AS is_overdue
FROM public.meeting_protocol_items mpi
JOIN public.meeting_protocols mp ON mp.id = mpi.protocol_id
WHERE mpi.item_type = 'task'
  AND mpi.status != 'erledigt';

-- Grant access to the view (RLS on underlying tables still applies)
GRANT SELECT ON public.open_meeting_tasks TO authenticated;
GRANT SELECT ON public.open_meeting_tasks TO service_role;