add reactions support to thread

app/schema.py

@@ -76,6 +76,13 @@ SCHEMA = [
     "signature_rendered" TEXT NOT NULL DEFAULT ''
     )""",
 
+    """CREATE TABLE IF NOT EXISTS "reactions" (
+    "id" INTEGER NOT NULL PRIMARY KEY,
+    "user_id" REFERENCES users(id) ON DELETE CASCADE,
+    "post_id" REFERENCES posts(id) ON DELETE CASCADE,
+    "reaction_text" TEXT NOT NULL DEFAULT ''
+    )""",
+
     # INDEXES
     "CREATE INDEX IF NOT EXISTS idx_post_history_post_id ON post_history(post_id)",
     "CREATE INDEX IF NOT EXISTS idx_posts_thread ON posts(thread_id, created_at, id)",
@@ -87,6 +94,9 @@ SCHEMA = [
     "CREATE INDEX IF NOT EXISTS idx_topics_slug ON topics(slug)",
     "CREATE INDEX IF NOT EXISTS session_keys ON sessions(key)",
     "CREATE INDEX IF NOT EXISTS sessions_user_id ON sessions(user_id)",
+
+    "CREATE INDEX IF NOT EXISTS reaction_post_text ON reactions(post_id, reaction_text)",
+    "CREATE INDEX IF NOT EXISTS reaction_user_post_text ON reactions(user_id, post_id, reaction_text)",
 ]
 
 def create():