Added some triggers and formatting to the migration scripts

server/migrations/0001_users_table.sql

@@ -1,9 +1,31 @@
-CREATE TABLE IF NOT EXISTS users (
+CREATE TABLE
-    id INTEGER PRIMARY KEY,
+    IF NOT EXISTS users (
-    username TEXT NOT NULL,
+        id INTEGER PRIMARY KEY NOT NULL,
-    password TEXT NOT NULL,
+        username TEXT NOT NULL UNIQUE,
-    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+        password TEXT NOT NULL,
-    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+        created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-);
+        updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+    );
 
-create index users_username_index on users (username);
+-- Create a trigger to set created_at and updated_at on INSERT
+CREATE TRIGGER IF NOT EXISTS set_created_at AFTER INSERT ON users BEGIN
+UPDATE users
+SET
+    created_at = CURRENT_TIMESTAMP
+WHERE
+    id = NEW.id;
+
+END;
+
+-- Create a trigger to set updated_at on UPDATE
+CREATE TRIGGER IF NOT EXISTS set_updated_at AFTER
+UPDATE ON users BEGIN
+UPDATE users
+SET
+    updated_at = CURRENT_TIMESTAMP
+WHERE
+    id = NEW.id;
+
+END;
+
+CREATE INDEX users_username_index ON users (username);

server/migrations/0002_posts_table.sql

@@ -1,12 +1,38 @@
-CREATE TABLE IF NOT EXISTS posts (
+CREATE TABLE
-    id INTEGER PRIMARY KEY NOT NULL,
+    IF NOT EXISTS posts (
-    user_id INTEGER NOT NULL,
+        id INTEGER PRIMARY KEY NOT NULL,
-    content TEXT NOT NULL,
+        user_id INTEGER NOT NULL,
-    upvotes INT NOT NULL DEFAULT 0,
+        content TEXT NOT NULL,
-    downvotes INT NOT NULL DEFAULT 0,
+        upvotes INTEGER NOT NULL DEFAULT 0,
-    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+        downvotes INTEGER NOT NULL DEFAULT 0,
-    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+        created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    FOREIGN KEY (user_id) REFERENCES users (id)
+        updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-);
+        FOREIGN KEY (user_id) REFERENCES users (id)
-create index IF NOT EXISTS posts_user_id_index on posts (user_id);
+    );
-create index IF NOT EXISTS posts_id_index on posts (id);
+
+-- Create a trigger to set created_at and updated_at on INSERT
+CREATE TRIGGER IF NOT EXISTS set_created_at AFTER INSERT ON posts BEGIN
+UPDATE posts
+SET
+    created_at = CURRENT_TIMESTAMP
+WHERE
+    id = NEW.id;
+
+END;
+
+-- Create a trigger to set updated_at on UPDATE
+CREATE TRIGGER IF NOT EXISTS set_updated_at AFTER
+UPDATE ON posts BEGIN
+UPDATE posts
+SET
+    updated_at = CURRENT_TIMESTAMP
+WHERE
+    id = NEW.id;
+
+END;
+
+create INDEX IF NOT EXISTS posts_user_id_index ON posts (user_id);
+
+create INDEX IF NOT EXISTS posts_id_index ON posts (id);
+
+CREATE INDEX idx_created_at_desc ON your_table (created_at DESC);