feat: /showcase project showcase with upvotes (#50)

config.json

@@ -150,7 +150,8 @@
       "github": "everyone",
       "rank": "everyone",
       "leaderboard": "everyone",
-      "profile": "everyone"
+      "profile": "everyone",
+      "showcase": "everyone"
     }
   },
   "help": {
@@ -165,6 +166,9 @@
   "poll": {
     "enabled": false
   },
+  "showcase": {
+    "enabled": false
+  },
   "github": {
     "feed": {
       "enabled": false,

migrations/009_showcases.cjs

@@ -0,0 +1,45 @@
+/**
+ * Add showcases and showcase_votes tables for /showcase project showcase system.
+ *
+ * @see https://github.com/VolvoxLLC/volvox-bot/issues/50
+ */
+
+/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
+exports.up = (pgm) => {
+  pgm.sql(`
+    CREATE TABLE IF NOT EXISTS showcases (
+      id SERIAL PRIMARY KEY,
+      guild_id TEXT NOT NULL,
+      author_id TEXT NOT NULL,
+      name TEXT NOT NULL,
+      description TEXT NOT NULL,
+      tech_stack TEXT[] DEFAULT '{}',
+      repo_url TEXT,
+      live_url TEXT,
+      message_id TEXT,
+      channel_id TEXT,
+      upvotes INTEGER NOT NULL DEFAULT 0,
+      created_at TIMESTAMPTZ DEFAULT NOW()
+    )
+  `);
+
+  pgm.sql('CREATE INDEX IF NOT EXISTS idx_showcases_guild ON showcases(guild_id)');
+  pgm.sql(
+    'CREATE INDEX IF NOT EXISTS idx_showcases_author ON showcases(guild_id, author_id)',
+  );
+
+  pgm.sql(`
+    CREATE TABLE IF NOT EXISTS showcase_votes (
+      guild_id TEXT NOT NULL,
+      showcase_id INTEGER NOT NULL REFERENCES showcases(id) ON DELETE CASCADE,
+      user_id TEXT NOT NULL,
+      PRIMARY KEY (guild_id, showcase_id, user_id)
+    )
+  `);
+};
+
+/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
+exports.down = (pgm) => {
+  pgm.sql('DROP TABLE IF EXISTS showcase_votes CASCADE');
+  pgm.sql('DROP TABLE IF EXISTS showcases CASCADE');
+};

src/api/utils/configAllowlist.js

@@ -17,6 +17,7 @@ export const SAFE_CONFIG_KEYS = new Set([
   'announce',
   'snippet',
   'poll',
+  'showcase',
   'tldr',
   'afk',
   'reputation',