-- Department Dashboards: composable workspace for event departments
-- Each department gets a dashboard with configurable module panels

-- ============================================================
-- 1. Module types enum
-- ============================================================
CREATE TYPE module_type AS ENUM (
  'kanban',
  'files',
  'checklist',
  'notes',
  'schedule',
  'contacts'
);

-- ============================================================
-- 2. Layout presets enum
-- ============================================================
CREATE TYPE layout_preset AS ENUM (
  'single',
  'split',
  'grid',
  'focus_sidebar',
  'custom'
);

-- ============================================================
-- 3. Department Dashboards
-- ============================================================
CREATE TABLE department_dashboards (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  department_id UUID NOT NULL REFERENCES event_departments(id) ON DELETE CASCADE,
  layout layout_preset NOT NULL DEFAULT 'split',
  created_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
  created_at TIMESTAMPTZ DEFAULT now(),
  updated_at TIMESTAMPTZ DEFAULT now(),
  UNIQUE(department_id)
);

CREATE INDEX idx_dept_dashboards_dept ON department_dashboards(department_id);

-- ============================================================
-- 4. Dashboard Panels (modules placed on a dashboard)
-- ============================================================
CREATE TABLE dashboard_panels (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  dashboard_id UUID NOT NULL REFERENCES department_dashboards(id) ON DELETE CASCADE,
  module module_type NOT NULL,
  position INT NOT NULL DEFAULT 0,
  width TEXT NOT NULL DEFAULT 'half' CHECK (width IN ('full', 'half', 'third', 'two_thirds')),
  config JSONB DEFAULT '{}',
  created_at TIMESTAMPTZ DEFAULT now(),
  UNIQUE(dashboard_id, position)
);

CREATE INDEX idx_dashboard_panels_dashboard ON dashboard_panels(dashboard_id);

-- ============================================================
-- 5. Checklists (scoped to department)
-- ============================================================
CREATE TABLE department_checklists (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  department_id UUID NOT NULL REFERENCES event_departments(id) ON DELETE CASCADE,
  title TEXT NOT NULL DEFAULT 'Checklist',
  sort_order INT NOT NULL DEFAULT 0,
  created_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
  created_at TIMESTAMPTZ DEFAULT now()
);

CREATE INDEX idx_dept_checklists_dept ON department_checklists(department_id);

CREATE TABLE department_checklist_items (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  checklist_id UUID NOT NULL REFERENCES department_checklists(id) ON DELETE CASCADE,
  content TEXT NOT NULL,
  is_completed BOOLEAN NOT NULL DEFAULT false,
  assigned_to UUID REFERENCES auth.users(id) ON DELETE SET NULL,
  due_date TIMESTAMPTZ,
  sort_order INT NOT NULL DEFAULT 0,
  created_at TIMESTAMPTZ DEFAULT now(),
  updated_at TIMESTAMPTZ DEFAULT now()
);

CREATE INDEX idx_dept_checklist_items_checklist ON department_checklist_items(checklist_id);
CREATE INDEX idx_dept_checklist_items_assigned ON department_checklist_items(assigned_to);

-- ============================================================
-- 6. Department Notes (simple rich text notes)
-- ============================================================
CREATE TABLE department_notes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  department_id UUID NOT NULL REFERENCES event_departments(id) ON DELETE CASCADE,
  title TEXT NOT NULL DEFAULT 'Untitled Note',
  content TEXT DEFAULT '',
  sort_order INT NOT NULL DEFAULT 0,
  created_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
  created_at TIMESTAMPTZ DEFAULT now(),
  updated_at TIMESTAMPTZ DEFAULT now()
);

CREATE INDEX idx_dept_notes_dept ON department_notes(department_id);

-- ============================================================
-- 7. Add enabled_modules to event_departments
-- ============================================================
ALTER TABLE event_departments
  ADD COLUMN enabled_modules module_type[] NOT NULL DEFAULT ARRAY['kanban'::module_type, 'files'::module_type, 'checklist'::module_type];

-- ============================================================
-- 8. RLS Policies
-- ============================================================
ALTER TABLE department_dashboards ENABLE ROW LEVEL SECURITY;
ALTER TABLE dashboard_panels ENABLE ROW LEVEL SECURITY;
ALTER TABLE department_checklists ENABLE ROW LEVEL SECURITY;
ALTER TABLE department_checklist_items ENABLE ROW LEVEL SECURITY;
ALTER TABLE department_notes ENABLE ROW LEVEL SECURITY;

-- Helper: check if user is org member for a department
-- (department → event → org → org_members)

-- Department Dashboards
CREATE POLICY "Org members can view department dashboards" ON department_dashboards FOR SELECT
  USING (EXISTS (
    SELECT 1 FROM event_departments ed
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE ed.id = department_dashboards.department_id AND om.user_id = auth.uid()
  ));

CREATE POLICY "Editors can manage department dashboards" ON department_dashboards FOR ALL
  USING (EXISTS (
    SELECT 1 FROM event_departments ed
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE ed.id = department_dashboards.department_id AND om.user_id = auth.uid() AND om.role IN ('owner', 'admin', 'editor')
  ));

-- Dashboard Panels
CREATE POLICY "Org members can view dashboard panels" ON dashboard_panels FOR SELECT
  USING (EXISTS (
    SELECT 1 FROM department_dashboards dd
    JOIN event_departments ed ON dd.department_id = ed.id
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE dd.id = dashboard_panels.dashboard_id AND om.user_id = auth.uid()
  ));

CREATE POLICY "Editors can manage dashboard panels" ON dashboard_panels FOR ALL
  USING (EXISTS (
    SELECT 1 FROM department_dashboards dd
    JOIN event_departments ed ON dd.department_id = ed.id
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE dd.id = dashboard_panels.dashboard_id AND om.user_id = auth.uid() AND om.role IN ('owner', 'admin', 'editor')
  ));

-- Department Checklists
CREATE POLICY "Org members can view department checklists" ON department_checklists FOR SELECT
  USING (EXISTS (
    SELECT 1 FROM event_departments ed
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE ed.id = department_checklists.department_id AND om.user_id = auth.uid()
  ));

CREATE POLICY "Editors can manage department checklists" ON department_checklists FOR ALL
  USING (EXISTS (
    SELECT 1 FROM event_departments ed
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE ed.id = department_checklists.department_id AND om.user_id = auth.uid() AND om.role IN ('owner', 'admin', 'editor')
  ));

-- Department Checklist Items
CREATE POLICY "Org members can view dept checklist items" ON department_checklist_items FOR SELECT
  USING (EXISTS (
    SELECT 1 FROM department_checklists dc
    JOIN event_departments ed ON dc.department_id = ed.id
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE dc.id = department_checklist_items.checklist_id AND om.user_id = auth.uid()
  ));

CREATE POLICY "Editors can manage dept checklist items" ON department_checklist_items FOR ALL
  USING (EXISTS (
    SELECT 1 FROM department_checklists dc
    JOIN event_departments ed ON dc.department_id = ed.id
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE dc.id = department_checklist_items.checklist_id AND om.user_id = auth.uid() AND om.role IN ('owner', 'admin', 'editor')
  ));

-- Department Notes
CREATE POLICY "Org members can view department notes" ON department_notes FOR SELECT
  USING (EXISTS (
    SELECT 1 FROM event_departments ed
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE ed.id = department_notes.department_id AND om.user_id = auth.uid()
  ));

CREATE POLICY "Editors can manage department notes" ON department_notes FOR ALL
  USING (EXISTS (
    SELECT 1 FROM event_departments ed
    JOIN events e ON ed.event_id = e.id
    JOIN org_members om ON e.org_id = om.org_id
    WHERE ed.id = department_notes.department_id AND om.user_id = auth.uid() AND om.role IN ('owner', 'admin', 'editor')
  ));

-- ============================================================
-- 9. Enable realtime
-- ============================================================
ALTER PUBLICATION supabase_realtime ADD TABLE department_checklists;
ALTER PUBLICATION supabase_realtime ADD TABLE department_checklist_items;
ALTER PUBLICATION supabase_realtime ADD TABLE department_notes;
ALTER PUBLICATION supabase_realtime ADD TABLE dashboard_panels;

-- ============================================================
-- 10. Auto-create dashboard when department is created
-- ============================================================
CREATE OR REPLACE FUNCTION public.create_department_dashboard()
RETURNS TRIGGER AS $$
DECLARE
  dash_id UUID;
  mod module_type;
  pos INT := 0;
BEGIN
  -- Create dashboard
  INSERT INTO public.department_dashboards (department_id, layout)
  VALUES (NEW.id, 'split')
  RETURNING id INTO dash_id;

  -- Create panels for each enabled module
  FOREACH mod IN ARRAY NEW.enabled_modules LOOP
    INSERT INTO public.dashboard_panels (dashboard_id, module, position, width)
    VALUES (dash_id, mod, pos, CASE WHEN pos = 0 THEN 'half' ELSE 'half' END);
    pos := pos + 1;
  END LOOP;

  -- Auto-create a default checklist if checklist module is enabled
  IF 'checklist' = ANY(NEW.enabled_modules) THEN
    INSERT INTO public.department_checklists (department_id, title, sort_order)
    VALUES (NEW.id, 'General', 0);
  END IF;

  -- Auto-create a default note if notes module is enabled
  IF 'notes' = ANY(NEW.enabled_modules) THEN
    INSERT INTO public.department_notes (department_id, title, content, sort_order)
    VALUES (NEW.id, 'Meeting Notes', '', 0);
  END IF;

  RETURN NEW;
END;
$$ LANGUAGE plpgsql SECURITY DEFINER;

CREATE TRIGGER on_department_created_setup_dashboard
  AFTER INSERT ON event_departments
  FOR EACH ROW EXECUTE FUNCTION public.create_department_dashboard();