init

ticktalk/crates/db/migrations/2025-12-10-190915-0000_setup_db/up.sql

@@ -0,0 +1,28 @@
+CREATE TABLE IF NOT EXISTS users (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    username VARCHAR(100) UNIQUE NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS chats (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    first_user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    second_user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    UNIQUE(first_user_id, second_user_id),
+    CHECK (first_user_id != second_user_id)
+);
+
+CREATE TABLE IF NOT EXISTS messages (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    sender_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    recipient_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    chat_id UUID NOT NULL REFERENCES chats(id) ON DELETE CASCADE,
+    content TEXT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+
+CREATE INDEX IF NOT EXISTS idx_messages_chat_id ON messages(chat_id);
+CREATE INDEX IF NOT EXISTS idx_messages_sender_id ON messages(sender_id);
+CREATE INDEX IF NOT EXISTS idx_messages_chat_created ON messages(chat_id, created_at);