-- ============================================================
-- MulliganMates — Row Level Security Policies
-- ============================================================

alter table public.profiles      enable row level security;
alter table public.courses       enable row level security;
alter table public.tees          enable row level security;
alter table public.holes         enable row level security;
alter table public.rounds        enable row level security;
alter table public.round_players enable row level security;
alter table public.round_invites enable row level security;
alter table public.scores        enable row level security;

-- ============================================================
-- Helper: is the current user a member of the given round?
-- ============================================================
create or replace function public.is_round_member(p_round_id uuid)
returns boolean language sql security definer stable as $$
  select exists (
    select 1 from public.round_players
     where round_id = p_round_id
       and user_id  = auth.uid()
  )
$$;

-- ============================================================
-- Profiles
-- ============================================================
create policy "Anyone can read profiles"
  on public.profiles for select using (true);

create policy "Users can update their own profile"
  on public.profiles for update using (id = auth.uid());

-- ============================================================
-- Courses
-- ============================================================
create policy "Authenticated users can read courses"
  on public.courses for select using (auth.role() = 'authenticated');

create policy "Authenticated users can create courses"
  on public.courses for insert with check (auth.role() = 'authenticated');

create policy "Course creator can update"
  on public.courses for update using (created_by = auth.uid());

-- ============================================================
-- Tees
-- ============================================================
create policy "Authenticated users can read tees"
  on public.tees for select using (auth.role() = 'authenticated');

create policy "Authenticated users can manage tees on their courses"
  on public.tees for all using (
    exists (
      select 1 from public.courses
       where id = tees.course_id
         and created_by = auth.uid()
    )
  );

-- ============================================================
-- Holes
-- ============================================================
create policy "Authenticated users can read holes"
  on public.holes for select using (auth.role() = 'authenticated');

create policy "Course creator can manage holes"
  on public.holes for all using (
    exists (
      select 1 from public.courses
       where id = holes.course_id
         and created_by = auth.uid()
    )
  );

-- ============================================================
-- Rounds
-- ============================================================
create policy "Round members can read round"
  on public.rounds for select using (public.is_round_member(id));

create policy "Authenticated users can create rounds"
  on public.rounds for insert with check (
    auth.role() = 'authenticated' and created_by = auth.uid()
  );

create policy "Round creator can update round"
  on public.rounds for update using (created_by = auth.uid());

-- ============================================================
-- Round Players
-- ============================================================
create policy "Round members can read player list"
  on public.round_players for select using (public.is_round_member(round_id));

create policy "Round creator can add players"
  on public.round_players for insert with check (
    exists (
      select 1 from public.rounds
       where id = round_players.round_id
         and created_by = auth.uid()
         and status = 'lobby'
    )
  );

create policy "Users can join a round via insert of own record"
  on public.round_players for insert with check (user_id = auth.uid());

-- ============================================================
-- Round Invites
-- ============================================================
create policy "Round members can read invites"
  on public.round_invites for select using (public.is_round_member(round_id));

create policy "Round creator can send invites"
  on public.round_invites for insert with check (
    exists (
      select 1 from public.rounds
       where id = round_invites.round_id
         and created_by = auth.uid()
         and status = 'lobby'
    )
  );

create policy "Invited user can mark invite accepted"
  on public.round_invites for update using (
    email = (select email from auth.users where id = auth.uid())
  );

-- ============================================================
-- Scores
-- ============================================================
create policy "Round members can read scores"
  on public.scores for select using (public.is_round_member(round_id));

create policy "Round members can enter and edit scores"
  on public.scores for insert with check (
    public.is_round_member(round_id) and
    exists (
      select 1 from public.rounds
       where id = scores.round_id
         and status = 'active'
    )
  );

create policy "Round members can update scores"
  on public.scores for update using (
    public.is_round_member(round_id) and
    exists (
      select 1 from public.rounds
       where id = scores.round_id
         and status = 'active'
    )
  );