Fix nullability of columns

internal/database/migrations/000003_set_column_not_null.down.sql

@@ -0,0 +1,45 @@
+BEGIN;
+    ALTER TABLE users
+        ALTER COLUMN active DROP NOT NULL,
+        ALTER COLUMN staff DROP NOT NULL,
+        ALTER COLUMN admin DROP NOT NULL;
+    ALTER TABLE channels
+        ALTER COLUMN guild_id DROP NOT NULL,
+        ALTER COLUMN admin DROP NOT NULL,
+        ALTER COLUMN default_channel DROP NOT NULL,
+        ALTER COLUMN new_patron DROP NOT NULL;
+    ALTER TABLE messages
+        ALTER COLUMN created_at DROP NOT NULL,
+        ALTER COLUMN content DROP NOT NULL,
+        ALTER COLUMN channel_id DROP NOT NULL,
+        ALTER COLUMN author_id DROP NOT NULL,
+        ADD COLUMN embed json,
+        ADD COLUMN previous_embeds json[];
+    ALTER TABLE patreon_creators
+        RENAME TO patreon_creator,
+        ALTER COLUMN creator DROP NOT NULL,
+        ALTER COLUMN link DROP NOT NULL,
+        ALTER COLUMN guild_id DROP NOT NULL;
+    ALTER TABLE patreon_tiers
+        RENAME TO patreon_tier,
+        ALTER COLUMN name DROP NOT NULL,
+        ALTER COLUMN creator DROP NOT NULL,
+        ALTER COLUMN role DROP NOT NULL;
+    ALTER TABLE requests
+        ALTER COLUMN author_id DROP NOT NULL,
+        ALTER COLUMN channel_id DROP NOT NULL,
+        ALTER COLUMN content DROP NOT NULL,
+        ALTER COLUMN requested_at DROP NOT NULL,
+        ALTER COLUMN completed DROP NOT NULL,
+        ALTER COLUMN message_id DROP NOT NULL,
+        ALTER COLUMN guild_id DROP NOT NULL;
+    ALTER TABLE roles
+        ALTER COLUMN role_type DROP NOT NULL,
+        ALTER COLUMN guild_id DROP NOT NULL;
+    ALTER TABLE servers
+        ALTER COLUMN name DROP NOT NULL,
+        ALTER COLUMN ip_address DROP NOT NULL,
+        ALTER COLUMN port DROP NOT NULL,
+        ALTER COLUMN password DROP NOT NULL,
+        ALTER COLUMN guild_id DROP NOT NULL;
+COMMIT;

internal/database/migrations/000003_set_column_not_null.up.sql

@@ -0,0 +1,45 @@
+BEGIN;
+    ALTER TABLE users
+        ALTER COLUMN active SET NOT NULL,
+        ALTER COLUMN staff SET NOT NULL,
+        ALTER COLUMN admin SET NOT NULL;
+    ALTER TABLE channels
+        ALTER COLUMN guild_id SET NOT NULL,
+        ALTER COLUMN admin SET NOT NULL,
+        ALTER COLUMN default_channel SET NOT NULL,
+        ALTER COLUMN new_patron SET NOT NULL;
+    ALTER TABLE messages
+        ALTER COLUMN created_at SET NOT NULL,
+        ALTER COLUMN content SET NOT NULL,
+        ALTER COLUMN channel_id SET NOT NULL,
+        ALTER COLUMN author_id SET NOT NULL,
+        DROP COLUMN embed,
+        DROP COLUMN previous_embeds;
+    ALTER TABLE patreon_creator
+        RENAME TO patreon_creators,
+        ALTER COLUMN creator SET NOT NULL,
+        ALTER COLUMN link SET NOT NULL,
+        ALTER COLUMN guild_id SET NOT NULL;
+    ALTER TABLE patreon_tier
+        RENAME TO patreon_tiers,
+        ALTER COLUMN name SET NOT NULL,
+        ALTER COLUMN creator SET NOT NULL,
+        ALTER COLUMN role SET NOT NULL;
+    ALTER TABLE requests
+        ALTER COLUMN author_id SET NOT NULL,
+        ALTER COLUMN channel_id SET NOT NULL,
+        ALTER COLUMN content SET NOT NULL,
+        ALTER COLUMN requested_at SET NOT NULL,
+        ALTER COLUMN completed SET NOT NULL,
+        ALTER COLUMN message_id SET NOT NULL,
+        ALTER COLUMN guild_id SET NOT NULL;
+    ALTER TABLE roles
+        ALTER COLUMN role_type SET NOT NULL,
+        ALTER COLUMN guild_id SET NOT NULL;
+    ALTER TABLE servers
+        ALTER COLUMN name SET NOT NULL,
+        ALTER COLUMN ip_address SET NOT NULL,
+        ALTER COLUMN port SET NOT NULL,
+        ALTER COLUMN password SET NOT NULL,
+        ALTER COLUMN guild_id SET NOT NULL;
+COMMIT;