chatapp

migrations/20251001212022_prototype-v1.sql

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+-- Add migration script here
+CREATE TABLE users {
+    id SERIAL PRIMARY KEY,
+    username VARCHAR(50) UNIQUE NOT NULL,
+    password VARCHAR(50) NOT NULL,
+    display_name VARCHAR(50),
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+}
+
+CREATE TABLE messages {
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    content TEXT NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    is_edited BOOLEAN DEFAULT FALSE
+}
+
+create table attachments {
+    id SERIAL PRIMARY KEY,
+    message_id INTEGER NOT NULL REFERENCES messages(id) ON DELETE CASCADE,
+    path TEXT NOT NULL
+}
+
+CREATE INDEX idx_users_username ON users(username)
+CREATE INDEX idx_new_messages ON messages(created_at DESC)
+
+-- Create a function to update the updated_at timestamp
+CREATE OR REPLACE FUNCTION update_updated_at_column()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ language 'plpgsql';
+
+-- Create trigger for users table
+CREATE TRIGGER update_users_updated_at
+    BEFORE UPDATE ON users
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();
+
+-- Create trigger for messages table
+CREATE TRIGGER update_messages_updated_at
+    BEFORE UPDATE ON messages
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();