blind-select/backend/migrations/001_initial_schema.sql

-- Initial schema for blind-select

-- Categories
CREATE TABLE IF NOT EXISTS categories (
    id SERIAL PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    icon VARCHAR(50),
    type VARCHAR(50) NOT NULL, -- food/entertainment/shopping/activity
    sort INT DEFAULT 0,
    status VARCHAR(20) DEFAULT 'active',
    created_at TIMESTAMP DEFAULT NOW()
);

-- Admins
CREATE TABLE IF NOT EXISTS admins (
    id SERIAL PRIMARY KEY,
    username VARCHAR(100) UNIQUE NOT NULL,
    password VARCHAR(255) NOT NULL,
    role VARCHAR(50) DEFAULT 'editor', -- admin/editor/viewer
    perm_json TEXT,
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW()
);

-- Users
CREATE TABLE IF NOT EXISTS users (
    id SERIAL PRIMARY KEY,
    nickname VARCHAR(100),
    avatar VARCHAR(255),
    phone VARCHAR(20) UNIQUE,
    wechat_openid VARCHAR(100) UNIQUE,
    password_hash VARCHAR(255),
    pref_score JSONB,
    tags TEXT[],
    repeat_days INT DEFAULT 7,
    blacklist BIGINT[],
    member_level INT DEFAULT 0,
    member_expires TIMESTAMP,
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    deleted_at TIMESTAMP
);

-- Merchants
CREATE TABLE IF NOT EXISTS merchants (
    id SERIAL PRIMARY KEY,
    name VARCHAR(200) NOT NULL,
    avatar VARCHAR(255),
    category_id INT,
    category_name VARCHAR(100),
    rating FLOAT8 DEFAULT 0,
    price_range VARCHAR(50),
    location VARCHAR(100),
    lat FLOAT8,
    lng FLOAT8,
    tags TEXT[],
    commission FLOAT8 DEFAULT 0.1,
    total_reviews INT DEFAULT 0,
    total_score FLOAT8 DEFAULT 0,
    quality_score FLOAT8 DEFAULT 0.5,
    status VARCHAR(20) DEFAULT 'pending',
    description TEXT,
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    deleted_at TIMESTAMP
);

-- Packages
CREATE TABLE IF NOT EXISTS packages (
    id SERIAL PRIMARY KEY,
    merchant_id INT NOT NULL,
    category_id INT,
    name VARCHAR(200) NOT NULL,
    description TEXT,
    price_min INT,
    price_max INT,
    actual_price INT,
    tags TEXT[],
    stock INT DEFAULT 9999,
    weight FLOAT8 DEFAULT 1.0,
    rating FLOAT8 DEFAULT 0,
    review_count INT DEFAULT 0,
    status VARCHAR(20) DEFAULT 'active',
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    deleted_at TIMESTAMP
);

-- User behaviors (includes review scores)
CREATE TABLE IF NOT EXISTS user_behaviors (
    id SERIAL PRIMARY KEY,
    user_id INT NOT NULL,
    package_id INT NOT NULL,
    behavior_type VARCHAR(50), -- viewed/selected/attended/reviewed/skipped
    system_score FLOAT8 DEFAULT 0,
    review_rating INT8,
    taste_score INT8,
    value_score INT8,
    distance_score INT8,
    match_score INT8,
    feedback_tags TEXT[],
    text TEXT,
    is_repeat BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT NOW()
);

-- Blind sessions
CREATE TABLE IF NOT EXISTS blind_sessions (
    id SERIAL PRIMARY KEY,
    user_id INT NOT NULL,
    category_id INT,
    price_range VARCHAR(50),
    distance_range VARCHAR(50),
    result_package_id INT,
    revealed_at TIMESTAMP,
    accepted BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT NOW()
);

-- Blind results (revealed details)
CREATE TABLE IF NOT EXISTS blind_results (
    session_id INT PRIMARY KEY,
    user_id INT NOT NULL,
    package_name VARCHAR(200),
    merchant_name VARCHAR(200),
    merchant_rating FLOAT8,
    match_score FLOAT8,
    description TEXT,
    price_range VARCHAR(50),
    actual_price INT,
    has_coupon BOOLEAN DEFAULT FALSE,
    coupon_value VARCHAR(100),
    matched_tags TEXT[],
    created_at TIMESTAMP DEFAULT NOW()
);

-- Coupons
CREATE TABLE IF NOT EXISTS coupons (
    id SERIAL PRIMARY KEY,
    merchant_id INT NOT NULL,
    package_id INT,
    user_id INT,
    type VARCHAR(20), -- discount/coupon/free/gift
    value FLOAT8,
    min_amount INT,
    total_count INT DEFAULT 100,
    remain_count INT DEFAULT 100,
    user_code VARCHAR(50) UNIQUE,
    pool_code VARCHAR(50),
    status VARCHAR(20) DEFAULT 'available', -- available/claimed/used/expired
    used_at TIMESTAMP,
    valid_start TIMESTAMP,
    valid_end TIMESTAMP,
    commission FLOAT8 DEFAULT 0,
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    deleted_at TIMESTAMP
);

-- Members
CREATE TABLE IF NOT EXISTS members (
    id SERIAL PRIMARY KEY,
    user_id INT,
    level INT DEFAULT 0,
    start_date TIMESTAMP,
    end_date TIMESTAMP,
    payment_method VARCHAR(50),
    amount FLOAT8,
    order_no VARCHAR(100) UNIQUE,
    status VARCHAR(20) DEFAULT 'active',
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    deleted_at TIMESTAMP
);

-- Activities
CREATE TABLE IF NOT EXISTS activities (
    id SERIAL PRIMARY KEY,
    name VARCHAR(200),
    type VARCHAR(50),
    start TIMESTAMP,
    end TIMESTAMP,
    config_json TEXT,
    status VARCHAR(20) DEFAULT 'active',
    created_at TIMESTAMP DEFAULT NOW()
);

-- Indexes
CREATE INDEX idx_users_phone ON users(phone);
CREATE INDEX idx_users_wechat ON users(wechat_openid);
CREATE INDEX idx_merchants_status ON merchants(status);
CREATE INDEX idx_packages_merchant ON packages(merchant_id);
CREATE INDEX idx_packages_status ON packages(status);
CREATE INDEX idx_behaviors_user ON user_behaviors(user_id);
CREATE INDEX idx_blind_user ON blind_sessions(user_id);
CREATE INDEX idx_coupons_status ON coupons(status);