-- 口译服务管理平台数据库表结构
-- 请在Supabase SQL编辑器中执行此脚本

-- 启用必要的扩展
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

-- 企业表（需要先创建，因为users表引用它）
CREATE TABLE IF NOT EXISTS enterprises (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  name VARCHAR(200) NOT NULL,
  contact_person VARCHAR(100),
  contact_email VARCHAR(255),
  contact_phone VARCHAR(20),
  address TEXT,
  tax_number VARCHAR(50),
  status VARCHAR(20) NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'inactive', 'suspended')),
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 译员表（需要先创建，因为orders表引用它）
CREATE TABLE IF NOT EXISTS interpreters (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  name VARCHAR(100) NOT NULL,
  email VARCHAR(255) UNIQUE NOT NULL,
  phone VARCHAR(20),
  languages TEXT[] NOT NULL,
  specialties TEXT[],
  status VARCHAR(20) NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'inactive', 'busy')),
  rating DECIMAL(3,2) DEFAULT 0 CHECK (rating >= 0 AND rating <= 5),
  total_calls INTEGER DEFAULT 0,
  hourly_rate DECIMAL(8,2),
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  avatar_url TEXT,
  bio TEXT,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 用户表
CREATE TABLE IF NOT EXISTS users (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  email VARCHAR(255) UNIQUE NOT NULL,
  name VARCHAR(100) NOT NULL,
  phone VARCHAR(20),
  user_type VARCHAR(20) NOT NULL DEFAULT 'individual' CHECK (user_type IN ('individual', 'enterprise', 'admin')),
  status VARCHAR(20) NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'inactive', 'suspended')),
  enterprise_id UUID REFERENCES enterprises(id),
  avatar_url TEXT,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 企业合同表
CREATE TABLE IF NOT EXISTS enterprise_contracts (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  enterprise_id UUID NOT NULL REFERENCES enterprises(id) ON DELETE CASCADE,
  contract_number VARCHAR(50) UNIQUE NOT NULL,
  contract_type VARCHAR(50) NOT NULL,
  start_date DATE NOT NULL,
  end_date DATE NOT NULL,
  total_amount DECIMAL(10,2) NOT NULL,
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  status VARCHAR(20) NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'expired', 'terminated')),
  service_rates JSONB,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 企业账单表
CREATE TABLE IF NOT EXISTS enterprise_bills (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  enterprise_id UUID NOT NULL REFERENCES enterprises(id) ON DELETE CASCADE,
  bill_number VARCHAR(50) UNIQUE NOT NULL,
  billing_period_start DATE NOT NULL,
  billing_period_end DATE NOT NULL,
  total_amount DECIMAL(10,2) NOT NULL,
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  status VARCHAR(20) NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'paid', 'overdue', 'cancelled')),
  items JSONB,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 订单表
CREATE TABLE IF NOT EXISTS orders (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  order_number VARCHAR(50) UNIQUE NOT NULL,
  user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
  user_name VARCHAR(100) NOT NULL,
  user_email VARCHAR(255) NOT NULL,
  service_type VARCHAR(50) NOT NULL,
  service_name VARCHAR(100) NOT NULL,
  source_language VARCHAR(50) NOT NULL,
  target_language VARCHAR(50) NOT NULL,
  duration INTEGER, -- 分钟
  status VARCHAR(20) NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'confirmed', 'in_progress', 'completed', 'cancelled')),
  priority VARCHAR(10) NOT NULL DEFAULT 'normal' CHECK (priority IN ('low', 'normal', 'high', 'urgent')),
  cost DECIMAL(10,2) NOT NULL,
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  scheduled_time TIMESTAMP WITH TIME ZONE,
  started_time TIMESTAMP WITH TIME ZONE,
  completed_time TIMESTAMP WITH TIME ZONE,
  interpreter_id UUID REFERENCES interpreters(id),
  interpreter_name VARCHAR(100),
  notes TEXT,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 发票表
CREATE TABLE IF NOT EXISTS invoices (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  invoice_number VARCHAR(50) UNIQUE NOT NULL,
  user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
  user_name VARCHAR(100) NOT NULL,
  user_email VARCHAR(255) NOT NULL,
  order_id UUID REFERENCES orders(id),
  invoice_type VARCHAR(20) NOT NULL CHECK (invoice_type IN ('personal', 'company')),
  personal_name VARCHAR(100),
  company_name VARCHAR(200),
  tax_number VARCHAR(50),
  company_address TEXT,
  subtotal DECIMAL(10,2) NOT NULL,
  tax_amount DECIMAL(10,2) NOT NULL DEFAULT 0,
  total_amount DECIMAL(10,2) NOT NULL,
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  status VARCHAR(20) NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'issued', 'sent', 'paid', 'cancelled')),
  issue_date DATE,
  due_date DATE,
  paid_date DATE,
  items JSONB,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 通话记录表
CREATE TABLE IF NOT EXISTS calls (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
  interpreter_id UUID NOT NULL REFERENCES interpreters(id) ON DELETE CASCADE,
  service_type VARCHAR(50) NOT NULL,
  source_language VARCHAR(50) NOT NULL,
  target_language VARCHAR(50) NOT NULL,
  status VARCHAR(20) NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'active', 'completed', 'cancelled')),
  duration INTEGER DEFAULT 0, -- 秒
  cost DECIMAL(10,2) DEFAULT 0,
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  quality_rating INTEGER CHECK (quality_rating >= 1 AND quality_rating <= 5),
  started_at TIMESTAMP WITH TIME ZONE,
  ended_at TIMESTAMP WITH TIME ZONE,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 文档翻译表
CREATE TABLE IF NOT EXISTS documents (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
  filename VARCHAR(255) NOT NULL,
  original_name VARCHAR(255) NOT NULL,
  file_size BIGINT NOT NULL,
  file_type VARCHAR(50) NOT NULL,
  source_language VARCHAR(50) NOT NULL,
  target_language VARCHAR(50) NOT NULL,
  status VARCHAR(20) NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'processing', 'completed', 'failed')),
  progress INTEGER DEFAULT 0 CHECK (progress >= 0 AND progress <= 100),
  cost DECIMAL(10,2) NOT NULL,
  currency VARCHAR(3) NOT NULL DEFAULT 'CNY',
  translated_file_url TEXT,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 系统设置表
CREATE TABLE IF NOT EXISTS system_settings (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  key VARCHAR(100) UNIQUE NOT NULL,
  value TEXT NOT NULL,
  description TEXT,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- 创建索引
CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
CREATE INDEX IF NOT EXISTS idx_users_user_type ON users(user_type);
CREATE INDEX IF NOT EXISTS idx_users_enterprise_id ON users(enterprise_id);
CREATE INDEX IF NOT EXISTS idx_orders_user_id ON orders(user_id);
CREATE INDEX IF NOT EXISTS idx_orders_status ON orders(status);
CREATE INDEX IF NOT EXISTS idx_orders_created_at ON orders(created_at);
CREATE INDEX IF NOT EXISTS idx_invoices_user_id ON invoices(user_id);
CREATE INDEX IF NOT EXISTS idx_invoices_order_id ON invoices(order_id);
CREATE INDEX IF NOT EXISTS idx_calls_user_id ON calls(user_id);
CREATE INDEX IF NOT EXISTS idx_calls_interpreter_id ON calls(interpreter_id);
CREATE INDEX IF NOT EXISTS idx_documents_user_id ON documents(user_id);

-- 创建更新时间触发器函数
CREATE OR REPLACE FUNCTION update_updated_at_column()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ language 'plpgsql';

-- 为所有表添加更新时间触发器
CREATE TRIGGER update_users_updated_at BEFORE UPDATE ON users
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_enterprises_updated_at BEFORE UPDATE ON enterprises
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_enterprise_contracts_updated_at BEFORE UPDATE ON enterprise_contracts
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_enterprise_bills_updated_at BEFORE UPDATE ON enterprise_bills
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_orders_updated_at BEFORE UPDATE ON orders
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_invoices_updated_at BEFORE UPDATE ON invoices
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_interpreters_updated_at BEFORE UPDATE ON interpreters
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_calls_updated_at BEFORE UPDATE ON calls
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_documents_updated_at BEFORE UPDATE ON documents
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_system_settings_updated_at BEFORE UPDATE ON system_settings
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

-- 启用行级安全策略 (RLS)
ALTER TABLE users ENABLE ROW LEVEL SECURITY;
ALTER TABLE enterprises ENABLE ROW LEVEL SECURITY;
ALTER TABLE enterprise_contracts ENABLE ROW LEVEL SECURITY;
ALTER TABLE enterprise_bills ENABLE ROW LEVEL SECURITY;
ALTER TABLE orders ENABLE ROW LEVEL SECURITY;
ALTER TABLE invoices ENABLE ROW LEVEL SECURITY;
ALTER TABLE interpreters ENABLE ROW LEVEL SECURITY;
ALTER TABLE calls ENABLE ROW LEVEL SECURITY;
ALTER TABLE documents ENABLE ROW LEVEL SECURITY;
ALTER TABLE system_settings ENABLE ROW LEVEL SECURITY;

-- 创建基本的RLS策略（管理员可以访问所有数据）
CREATE POLICY "管理员可以访问所有用户数据" ON users
    FOR ALL USING (
        EXISTS (
            SELECT 1 FROM users WHERE id = auth.uid() AND user_type = 'admin'
        )
    );

CREATE POLICY "用户可以访问自己的数据" ON users
    FOR ALL USING (id = auth.uid());

-- 为其他表创建类似的策略
CREATE POLICY "管理员可以访问所有企业数据" ON enterprises
    FOR ALL USING (
        EXISTS (
            SELECT 1 FROM users WHERE id = auth.uid() AND user_type = 'admin'
        )
    );

CREATE POLICY "管理员可以访问所有订单数据" ON orders
    FOR ALL USING (
        EXISTS (
            SELECT 1 FROM users WHERE id = auth.uid() AND user_type = 'admin'
        )
    );

CREATE POLICY "用户可以访问自己的订单" ON orders
    FOR ALL USING (user_id = auth.uid());

-- 插入一些系统设置
INSERT INTO system_settings (key, value, description) VALUES
    ('app_name', '口译服务管理平台', '应用程序名称'),
    ('app_version', '1.0.0', '应用程序版本'),
    ('maintenance_mode', 'false', '维护模式开关'),
    ('max_file_size', '10485760', '最大文件上传大小（字节）'),
    ('supported_languages', '["中文", "英文", "日文", "韩文", "法文", "德文", "西班牙文", "俄文"]', '支持的语言列表'),
    ('default_currency', 'CNY', '默认货币'),
    ('tax_rate', '0.13', '税率')
ON CONFLICT (key) DO NOTHING;