-- StrengerChat Pro - Postgres Database Schema (Final Stable Version)
-- Optimized for PostgreSQL 14+

-- 1. Users Table
CREATE TABLE IF NOT EXISTS users (
    id SERIAL PRIMARY KEY,
    username VARCHAR(50) NOT NULL UNIQUE,
    email VARCHAR(100) NOT NULL UNIQUE,
    password_hash VARCHAR(255) NOT NULL,
    gender VARCHAR(10) NOT NULL,
    avatar_type VARCHAR(10) DEFAULT 'default',
    age INT,
    bio TEXT,
    is_premium BOOLEAN DEFAULT FALSE,
    is_banned BOOLEAN DEFAULT FALSE,
    banned_at TIMESTAMP,
    ban_reason TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 2. Sessions & Geo-Location Table
CREATE TABLE IF NOT EXISTS active_sessions (
    user_id INT PRIMARY KEY,
    socket_id VARCHAR(100),
    latitude FLOAT,
    longitude FLOAT,
    status VARCHAR(20) DEFAULT 'idle',
    looking_for VARCHAR(10) DEFAULT 'both',
    last_active TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_user_session FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);

-- 3. Reports Table
CREATE TABLE IF NOT EXISTS reports (
    id SERIAL PRIMARY KEY,
    reporter_id INT,
    reported_id INT,
    reason TEXT,
    status VARCHAR(20) DEFAULT 'pending', -- pending, dismissed, resolved
    action_taken TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_reporter FOREIGN KEY (reporter_id) REFERENCES users(id) ON DELETE SET NULL,
    CONSTRAINT fk_reported FOREIGN KEY (reported_id) REFERENCES users(id) ON DELETE CASCADE
);

-- 4. Direct Messages / Friends History Table
CREATE TABLE IF NOT EXISTS direct_messages (
    id SERIAL PRIMARY KEY,
    sender_id INT,
    receiver_id INT,
    message TEXT NOT NULL,
    is_read BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_dm_sender FOREIGN KEY (sender_id) REFERENCES users(id) ON DELETE CASCADE,
    CONSTRAINT fk_dm_receiver FOREIGN KEY (receiver_id) REFERENCES users(id) ON DELETE CASCADE
);

ALTER TABLE users ADD COLUMN IF NOT EXISTS last_seen TIMESTAMP DEFAULT CURRENT_TIMESTAMP;