-- E-Commerce Database Schema
-- Run this file to create database, user, tables and populate initial data
-- Usage: psql -U postgres -h localhost -f schema.sql

-- ============================================
-- CREATE DATABASE AND USER
-- ============================================

-- Drop existing database and user if they exist (for clean setup)
DROP DATABASE IF EXISTS ecommerce_db;
DROP USER IF EXISTS ecommerce_user;

-- Create database (Windows compatible - uses system defaults)
CREATE DATABASE ecommerce_db
    WITH 
    OWNER = postgres
    ENCODING = 'UTF8'
    TABLESPACE = pg_default
    CONNECTION LIMIT = -1;

-- Create user with password
CREATE USER ecommerce_user WITH PASSWORD 'password';

-- Grant all privileges on database to user
GRANT ALL PRIVILEGES ON DATABASE ecommerce_db TO ecommerce_user;

-- Connect to the ecommerce_db database
\c ecommerce_db

-- Grant schema privileges including CREATE permission
GRANT ALL ON SCHEMA public TO ecommerce_user;
GRANT CREATE ON SCHEMA public TO ecommerce_user;

-- Make ecommerce_user owner of public schema to avoid permission issues
ALTER SCHEMA public OWNER TO ecommerce_user;

-- Grant privileges on all current and future tables
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO ecommerce_user;
GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO ecommerce_user;
GRANT ALL PRIVILEGES ON ALL FUNCTIONS IN SCHEMA public TO ecommerce_user;

-- Grant privileges on future objects
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON TABLES TO ecommerce_user;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON SEQUENCES TO ecommerce_user;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON FUNCTIONS TO ecommerce_user;

-- ============================================
-- CREATE TABLES
-- ============================================

-- Category Table
CREATE TABLE category (
    id SERIAL PRIMARY KEY,
    name VARCHAR(100) UNIQUE NOT NULL,
    slug VARCHAR(100) UNIQUE NOT NULL,
    description TEXT,
    image VARCHAR(500)
);

-- Model Table (e.g., New Balance 9060)
CREATE TABLE model (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    category_id INTEGER NOT NULL,
    brand VARCHAR(100) NOT NULL,
    base_price DECIMAL(10, 2),
    sizes JSONB,
    description TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (category_id) REFERENCES category(id) ON DELETE CASCADE,
    UNIQUE (name, category_id, brand)
);

CREATE INDEX idx_model_category ON model(category_id);
CREATE INDEX idx_model_brand ON model(brand);

-- User Table
CREATE TABLE "user" (
    id SERIAL PRIMARY KEY,
    email VARCHAR(255) UNIQUE NOT NULL,
    hashed_password VARCHAR(255) NOT NULL,
    full_name VARCHAR(255),
    phone VARCHAR(20),
    address TEXT,
    city VARCHAR(100),
    postal_code VARCHAR(20),
    country VARCHAR(100),
    is_active BOOLEAN DEFAULT TRUE,
    is_admin BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Product Table
CREATE TABLE product (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    slug VARCHAR(255) UNIQUE,
    description TEXT,
    price DECIMAL(10, 2) NOT NULL,
    discount_price DECIMAL(10, 2),
    category_id INTEGER NOT NULL,
    model_id INTEGER,
    gender VARCHAR(50),
    brand VARCHAR(100),
    sizes JSONB,
    colors JSONB,
    stock INTEGER DEFAULT 0,
    images JSONB,
    is_featured BOOLEAN DEFAULT FALSE,
    is_on_sale BOOLEAN DEFAULT FALSE,
    override_price DECIMAL(10, 2),
    override_sizes JSONB,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (category_id) REFERENCES category(id) ON DELETE CASCADE,
    FOREIGN KEY (model_id) REFERENCES model(id) ON DELETE SET NULL
);

CREATE INDEX idx_product_slug ON product(slug);
CREATE INDEX idx_product_model ON product(model_id);

-- Cart Table
CREATE TABLE cart (
    id SERIAL PRIMARY KEY,
    user_id INTEGER UNIQUE NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES "user"(id) ON DELETE CASCADE
);

-- Cart Item Table
CREATE TABLE cart_item (
    id SERIAL PRIMARY KEY,
    cart_id INTEGER NOT NULL,
    product_id INTEGER NOT NULL,
    quantity INTEGER DEFAULT 1,
    size VARCHAR(50),
    color VARCHAR(50),
    FOREIGN KEY (cart_id) REFERENCES cart(id) ON DELETE CASCADE,
    FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE
);

-- Order Table
CREATE TABLE "order" (
    id SERIAL PRIMARY KEY,
    user_id INTEGER NOT NULL,
    order_number VARCHAR(100) UNIQUE NOT NULL,
    status VARCHAR(50) DEFAULT 'pending',
    total_amount DECIMAL(10, 2) NOT NULL,
    shipping_address TEXT,
    shipping_city VARCHAR(100),
    shipping_postal_code VARCHAR(20),
    shipping_country VARCHAR(100),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES "user"(id) ON DELETE CASCADE
);

-- Order Item Table
CREATE TABLE order_item (
    id SERIAL PRIMARY KEY,
    order_id INTEGER NOT NULL,
    product_id INTEGER NOT NULL,
    quantity INTEGER NOT NULL,
    price DECIMAL(10, 2) NOT NULL,
    size VARCHAR(50),
    color VARCHAR(50),
    FOREIGN KEY (order_id) REFERENCES "order"(id) ON DELETE CASCADE,
    FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE
);

-- Wishlist (User-Product Association)
CREATE TABLE user_wishlist (
    user_id INTEGER NOT NULL,
    product_id INTEGER NOT NULL,
    PRIMARY KEY (user_id, product_id),
    FOREIGN KEY (user_id) REFERENCES "user"(id) ON DELETE CASCADE,
    FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE
);

-- Contact Message Table
CREATE TABLE contact_message (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255),
    email VARCHAR(255),
    subject VARCHAR(255),
    message TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- ============================================
-- CREATE INDEXES
-- ============================================
CREATE INDEX idx_user_email ON "user"(email);
CREATE INDEX idx_product_name ON product(name);
CREATE INDEX idx_product_category ON product(category_id);
CREATE INDEX idx_product_is_featured ON product(is_featured);
CREATE INDEX idx_product_is_on_sale ON product(is_on_sale);
CREATE INDEX idx_order_user ON "order"(user_id);
CREATE INDEX idx_order_created_at ON "order"(created_at);
CREATE INDEX idx_cart_item_cart ON cart_item(cart_id);
CREATE INDEX idx_order_item_order ON order_item(order_id);

-- ============================================
-- POPULATE INITIAL DATA
-- ============================================

-- Insert Categories
INSERT INTO category (name, slug, description) VALUES
    ('Shoes', 'shoes', 'Footwear for all occasions'),
    ('Shirts', 'shirts', 'T-shirts and casual tops'),
    ('Pants', 'pants', 'Jeans and trousers'),
    ('Hats', 'hats', 'Caps and beanies'),
    ('Accessories', 'accessories', 'Bags, belts, and more');

-- Insert Sample Products (Shoes - Featured)
INSERT INTO product (name, description, price, discount_price, category_id, gender, brand, sizes, colors, stock, images, is_featured, is_on_sale) VALUES
    (
        'Premium Running Shoes',
        'High-performance running shoes with advanced cushioning technology',
        129.99,
        99.99,
        1,
        'men',
        'Nike',
        '["7", "8", "9", "10", "11", "12", "13"]',
        '["Black", "White", "Blue"]',
        50,
        '["https://via.placeholder.com/300x300?text=Nike+Running"]',
        TRUE,
        TRUE
    ),
    (
        'Women Athletic Sneakers',
        'Comfortable athletic sneakers for everyday wear',
        99.99,
        NULL,
        1,
        'women',
        'Adidas',
        '["5", "6", "7", "8", "9", "10"]',
        '["Pink", "White", "Purple"]',
        45,
        '["https://via.placeholder.com/300x300?text=Adidas+Sneakers"]',
        TRUE,
        FALSE
    ),
    (
        'Basketball High Tops',
        'Professional basketball shoes with ankle support',
        149.99,
        NULL,
        1,
        'men',
        'Jordan',
        '["8", "9", "10", "11", "12", "13"]',
        '["Red", "Black", "Gold"]',
        30,
        '["https://via.placeholder.com/300x300?text=Jordan+High"]',
        TRUE,
        FALSE
    ),
    (
        'Casual Leather Loafers',
        'Classic leather loafers for formal occasions',
        139.99,
        109.99,
        1,
        'men',
        'Cole Haan',
        '["7", "8", "9", "10", "11", "12"]',
        '["Brown", "Black"]',
        25,
        '["https://via.placeholder.com/300x300?text=Cole+Haan+Loafers"]',
        TRUE,
        TRUE
    ),
    (
        'Hiking Boot Pro',
        'Durable hiking boots with waterproof technology',
        179.99,
        149.99,
        1,
        'men',
        'Salomon',
        '["8", "9", "10", "11", "12", "13"]',
        '["Brown", "Gray", "Black"]',
        35,
        '["https://via.placeholder.com/300x300?text=Salomon+Hiking"]',
        TRUE,
        TRUE
    );

-- Insert Sample Products (Clothing)
INSERT INTO product (name, description, price, discount_price, category_id, gender, brand, sizes, colors, stock, images, is_featured, is_on_sale) VALUES
    (
        'Classic Cotton T-Shirt',
        'Comfortable everyday cotton t-shirt',
        29.99,
        NULL,
        2,
        'men',
        'Gap',
        '["S", "M", "L", "XL", "XXL"]',
        '["Red", "Blue", "White", "Black"]',
        100,
        '["https://via.placeholder.com/300x300?text=Cotton+Tee"]',
        FALSE,
        FALSE
    ),
    (
        'Silk Blouse',
        'Elegant silk blouse for professional settings',
        89.99,
        69.99,
        2,
        'women',
        'Hugo Boss',
        '["XS", "S", "M", "L", "XL"]',
        '["White", "Black", "Navy"]',
        40,
        '["https://via.placeholder.com/300x300?text=Silk+Blouse"]',
        FALSE,
        TRUE
    ),
    (
        'Slim Fit Jeans',
        'Modern slim fit jeans with stretch fabric',
        79.99,
        59.99,
        3,
        'men',
        'Levi''s',
        '["28", "30", "32", "34", "36", "38"]',
        '["Dark Blue", "Light Blue", "Black"]',
        60,
        '["https://via.placeholder.com/300x300?text=Slim+Jeans"]',
        FALSE,
        TRUE
    ),
    (
        'Yoga Leggings',
        'High-waist yoga leggings with moisture-wicking',
        89.99,
        NULL,
        3,
        'women',
        'Lululemon',
        '["XS", "S", "M", "L", "XL"]',
        '["Black", "Navy", "Purple", "Gray"]',
        55,
        '["https://via.placeholder.com/300x300?text=Yoga+Leggings"]',
        TRUE,
        FALSE
    );

-- Insert Sample Users (for testing)
INSERT INTO "user" (email, hashed_password, full_name, phone, address, city, postal_code, country, is_active, is_admin) VALUES
    (
        'admin@example.com',
        '$2b$12$jNWZdZNMbKEkOjA8Gq3ZUOTml23zfqhFDPJ8AlZQ51WhUyi04AH7C', -- password: password123
        'Admin User',
        '1234567890',
        '123 Admin Street',
        'New York',
        '10001',
        'USA',
        TRUE,
        TRUE
    ),
    (
        'user@example.com',
        '$2b$12$jNWZdZNMbKEkOjA8Gq3ZUOTml23zfqhFDPJ8AlZQ51WhUyi04AH7C', -- password: password123
        'John Doe',
        '1234567890',
        '123 Main Street',
        'New York',
        '10001',
        'USA',
        TRUE,
        FALSE
    ),
    (
        'jane@example.com',
        '$2b$12$jNWZdZNMbKEkOjA8Gq3ZUOTml23zfqhFDPJ8AlZQ51WhUyi04AH7C', -- password: password123
        'Jane Smith',
        '9876543210',
        '456 Oak Avenue',
        'Los Angeles',
        '90001',
        'USA',
        TRUE,
        FALSE
    );

-- Create carts for users
INSERT INTO cart (user_id) VALUES
    (1),
    (2),
    (3);

-- ============================================
-- SET PERMISSIONS (After all tables are created)
-- ============================================
-- Grant all privileges on all tables, sequences, and functions to the user
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO ecommerce_user;
GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO ecommerce_user;
GRANT ALL PRIVILEGES ON ALL FUNCTIONS IN SCHEMA public TO ecommerce_user;

-- Ensure future objects also get permissions
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON TABLES TO ecommerce_user;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON SEQUENCES TO ecommerce_user;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON FUNCTIONS TO ecommerce_user;

-- ============================================
-- COMPLETE
-- ============================================
-- Schema created successfully!
--
-- Database: ecommerce_db
-- User: ecommerce_user
-- Password: password
-- Host: localhost:5432
--
-- Connection string for .env file:
-- DATABASE_URL=postgresql://ecommerce_user:password@localhost:5432/ecommerce_db
--
-- Tables created: 9
-- - category, user, product, cart, cart_item
-- - order, order_item, user_wishlist, contact_message
--
-- Demo accounts:
-- - ADMIN: admin@example.com / password123 (is_admin: true)
-- - USER: user@example.com / password123
-- - USER: jane@example.com / password123
--
-- Sample data: 5 categories, 9 products, 3 users
--
-- Next steps:
-- 1. Update backend/.env with: DATABASE_URL=postgresql://ecommerce_user:password@localhost:5432/ecommerce_db
-- 2. Run: python backend/app/main.py
-- 3. Login as admin to create/edit/delete products