Ported the project from sqlite to postgres

server/migrations_pg/0001_users_table.sql

@@ -0,0 +1,38 @@
+CREATE TABLE IF NOT EXISTS users (
+    id BIGSERIAL PRIMARY KEY,
+    username TEXT NOT NULL UNIQUE,
+    password TEXT NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create a function to set created_at and updated_at on INSERT
+CREATE OR REPLACE FUNCTION set_timestamps_on_insert() RETURNS TRIGGER AS $$
+BEGIN
+    NEW.created_at = NOW();
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Create a trigger to call the function after INSERT
+CREATE TRIGGER set_timestamps_on_insert
+BEFORE INSERT ON users
+FOR EACH ROW
+EXECUTE FUNCTION set_timestamps_on_insert();
+
+-- Create a function to set updated_at on UPDATE
+CREATE OR REPLACE FUNCTION set_updated_at() RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Create a trigger to call the function after UPDATE
+CREATE TRIGGER set_updated_at
+BEFORE UPDATE ON users
+FOR EACH ROW
+EXECUTE FUNCTION set_updated_at();
+
+CREATE INDEX users_username_index ON users (username);

server/migrations_pg/0002_posts_table.sql

@@ -0,0 +1,43 @@
+CREATE TABLE IF NOT EXISTS posts (
+    id BIGSERIAL PRIMARY KEY,
+    user_id BIGINT NOT NULL,
+    content TEXT NOT NULL,
+    upvotes INTEGER NOT NULL DEFAULT 0,
+    downvotes INTEGER NOT NULL DEFAULT 0,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users (id)
+);
+
+-- Create a function to set created_at and updated_at on INSERT
+CREATE OR REPLACE FUNCTION set_timestamps_on_insert() RETURNS TRIGGER AS $$
+BEGIN
+    NEW.created_at = NOW();
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Create a trigger to call the function after INSERT
+CREATE TRIGGER set_timestamps_on_insert
+BEFORE INSERT ON posts
+FOR EACH ROW
+EXECUTE FUNCTION set_timestamps_on_insert();
+
+-- Create a function to set updated_at on UPDATE
+CREATE OR REPLACE FUNCTION set_updated_at() RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Create a trigger to call the function after UPDATE
+CREATE TRIGGER set_updated_at
+BEFORE UPDATE ON posts
+FOR EACH ROW
+EXECUTE FUNCTION set_updated_at();
+
+CREATE INDEX posts_user_id_index ON posts (user_id);
+CREATE INDEX posts_id_index ON posts (id);
+CREATE INDEX idx_created_at_desc ON posts (created_at DESC);