Huge refactor for backend and client

This is barely functionnal, but at least it can display some data without crashing
Most other functionnalities other than displaying events are broken, and so are the relative date operations, they need to be fixed asap

supabase/migrations/202401_init.sql

@@ -47,33 +47,41 @@ comment on table public.worlds is 'Worlds belonging to a single user ; a game ma
 -- World Calendars
 create table public.world_calendars (
   id                bigint generated by default as identity primary key,
-  months            text array,
-  days_per_year     int not null,
   world_id          bigint references public.worlds on delete cascade not null
 );
 comment on table public.world_calendars is 'Calendar settings and configuration attached to a single world.';
 
+-- Calendar Months
+create table public.calendar_months (
+  id                bigint generated by default as identity primary key,
+  name              text not null,
+  days              int not null,
+  position          int not null,
+  calendar_id       bigint references public.world_calendars on delete cascade not null
+);
+comment on table public.calendar_months is 'A calendar month.';
+
 -- Event categories
-create table public.events_category (
+create table public.calendar_events_category (
   id        bigint generated by default as identity primary key,
   name      text not null,
   unique (name)
 );
-comment on table public.events_category is 'Categories describing events';
+comment on table public.calendar_events_category is 'Categories describing events';
 
 -- Events
-create table public.events (
+create table public.calendar_events (
   id            bigint generated by default as identity primary key,
   title         text not null,
   description   text,
   start_date    json not null,
   end_date      json,
-  category      bigint references public.events_category on delete cascade,
+  category      bigint references public.calendar_events_category on delete cascade,
   hidden        boolean,
   wiki          text,
   calendar_id   bigint references public.world_calendars on delete cascade not null
 );
-comment on table public.events is 'Events linked to a world';
+comment on table public.calendar_events is 'Events linked to a world';
 
 -- Character categories
 create table public.characters_category (
@@ -121,11 +129,12 @@ alter table public.users enable row level security;
 alter table public.user_roles enable row level security;
 alter table public.role_permissions enable row level security;
 alter table public.worlds enable row level security;
-alter table public.world_calendars enable row level security;
-alter table public.events_category enable row level security;
 alter table public.characters_category enable row level security;
 alter table public.characters enable row level security;
-alter table public.events enable row level security;
+alter table public.world_calendars enable row level security;
+alter table public.calendar_months enable row level security;
+alter table public.calendar_events enable row level security;
+alter table public.calendar_events_category enable row level security;
 
 -- User policies
 create policy "Allow logged-in read access" on public.users for select using ( auth.role() = 'authenticated' );
@@ -158,23 +167,43 @@ create policy "Allow individual update access for GMs" on public.world_calendars
     )
 );
 
+-- Month policies
+create policy "Allow individual read access for GMs" on public.calendar_months for select using (
+    exists (
+        select 1 from world_calendars
+        where world_calendars.id = calendar_months.calendar_id
+    )
+);
+create policy "Allow individual insert access for GMs" on public.calendar_months for insert with check (
+    exists (
+        select 1 from world_calendars
+        where world_calendars.id = calendar_months.calendar_id
+    )
+);
+create policy "Allow individual update access for GMs" on public.calendar_months for update with check (
+    exists (
+        select 1 from world_calendars
+        where world_calendars.id = calendar_months.calendar_id
+    )
+);
+
 -- Event policies
-create policy "Allow individual read access for GMs" on public.events for select using (
+create policy "Allow individual read access for GMs" on public.calendar_events for select using (
     exists (
         select 1 from world_calendars
-        where world_calendars.id = events.calendar_id
+        where world_calendars.id = calendar_events.calendar_id
     )
 );
-create policy "Allow individual insert access for GMs" on public.events for insert with check (
+create policy "Allow individual insert access for GMs" on public.calendar_events for insert with check (
     exists (
         select 1 from world_calendars
-        where world_calendars.id = events.calendar_id
+        where world_calendars.id = calendar_events.calendar_id
     )
 );
-create policy "Allow individual update access for GMs" on public.events for update with check (
+create policy "Allow individual update access for GMs" on public.calendar_events for update with check (
     exists (
         select 1 from world_calendars
-        where world_calendars.id = events.calendar_id
+        where world_calendars.id = calendar_events.calendar_id
     )
 );
 
@@ -198,6 +227,10 @@ create policy "Allow individual update access for GMs" on public.characters for
     )
 );
 
+-- Categories are public to view but not to insert
+create policy "Allow logged-in read access" on public.calendar_events_category for select using ( auth.role() = 'authenticated' );
+create policy "Allow logged-in read access" on public.characters_category for select using ( auth.role() = 'authenticated' );
+
 -- Send "previous data" on change
 alter table public.users replica identity full;