add unique constraint for quests

migrations/20230426221940_init.up.sql

@@ -38,9 +38,11 @@ create table if not exists watch_quests (
   created_at int not null default (unixepoch()),
   last_updated int not null default (unixepoch()),
   foreign key (user) references users (id) on delete cascade on update no action,
-  foreign key (watch) references watches (id) on delete cascade on update no action
+  foreign key (watch) references watches (id) on delete cascade on update no action,
+  primary key (user, watch)
 );
 
+
 -- friend lists; created by trigger at the same time as the user, so no created_at needed
 create table if not exists follows (
   user blob not null primary key,
@@ -50,22 +52,22 @@ create table if not exists follows (
 );
 
 create table if not exists watch_notes (
+  id blob not null primary key, -- a user can have multiple notes about the same thing
   user blob not null,
   watch blob not null,
   note blob,
   public boolean not null,
-  created_at int not null default (unixepoch()),
   last_updated int not null default (unixepoch()),
   foreign key (user) references users (id) on delete cascade on update no action,
   foreign key (watch) references watches (id) on delete cascade on update no action
 );
 
 -- indices, not needed for follows
-create index if not exists user_username_dex on users (lower(username));
-create index if not exists user_email_dex on users (lower(email));
-create index if not exists watch_title_dex on watches (lower(title));
-create index if not exists watch_added_by_dex on watches (added_by);
+create index if not exists users_username_dex on users (lower(username));
+create index if not exists users_email_dex on users (lower(email));
+create index if not exists watches_title_dex on watches (lower(title));
+create index if not exists watches_added_by_dex on watches (added_by);
 create index if not exists quests_user_dex on watch_quests (user);
 create index if not exists quests_watch_dex on watch_quests (watch);
-create index if not exists note_user_dex on watch_notes (user);
-create index if not exists note_watch_dex on watch_notes (watch);
+create index if not exists notes_user_dex on watch_notes (user);
+create index if not exists notes_watch_dex on watch_notes (watch);