-- ============================================================================
--  优匠优服 · Phase 3 商家（企业账号）
--  纯新增表，不改动既有表结构与数据
-- ============================================================================
SET NAMES utf8mb4;

-- 商家入驻档案
CREATE TABLE IF NOT EXISTS `fa_merchant` (
  `id`              int(10) unsigned NOT NULL AUTO_INCREMENT,
  `user_id`         int(10) unsigned NOT NULL DEFAULT '0' COMMENT '关联 fa_user.id',
  `name`            varchar(100) NOT NULL DEFAULT '' COMMENT '企业/商户名称',
  `license_no`      varchar(50)  NOT NULL DEFAULT '' COMMENT '统一社会信用代码',
  `license_image`   varchar(255) NOT NULL DEFAULT '' COMMENT '营业执照图',
  `legal_person`    varchar(50)  NOT NULL DEFAULT '' COMMENT '法人代表',
  `contact`         varchar(50)  NOT NULL DEFAULT '' COMMENT '联系人',
  `mobile`          varchar(20)  NOT NULL DEFAULT '' COMMENT '联系电话',
  `province`        varchar(50)  NOT NULL DEFAULT '',
  `city`            varchar(50)  NOT NULL DEFAULT '',
  `district`        varchar(50)  NOT NULL DEFAULT '',
  `address`         varchar(255) NOT NULL DEFAULT '' COMMENT '经营地址',
  `invoice_title`   varchar(100) NOT NULL DEFAULT '' COMMENT '发票抬头',
  `invoice_tax_no`  varchar(50)  NOT NULL DEFAULT '' COMMENT '纳税人识别号',
  `invoice_bank`    varchar(100) NOT NULL DEFAULT '' COMMENT '开户行',
  `invoice_account` varchar(50)  NOT NULL DEFAULT '' COMMENT '银行账号',
  `settle_type`     enum('prepay','monthly') NOT NULL DEFAULT 'prepay' COMMENT '预付/月结',
  `verify_status`   enum('pending','pass','reject') NOT NULL DEFAULT 'pending',
  `audit_msg`       varchar(255) NOT NULL DEFAULT '',
  `order_count`     int(11)      NOT NULL DEFAULT '0',
  `total_amount`    decimal(12,2) NOT NULL DEFAULT '0.00',
  `createtime`      bigint(16)   DEFAULT NULL,
  `updatetime`      bigint(16)   DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `user_id` (`user_id`),
  KEY `verify_status` (`verify_status`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商家档案';

-- 商家订单归属（批次对账用，不侵入 fa_order）
CREATE TABLE IF NOT EXISTS `fa_merchant_order` (
  `id`          int(10) unsigned NOT NULL AUTO_INCREMENT,
  `merchant_id` int(10) unsigned NOT NULL DEFAULT '0',
  `order_id`    int(10) unsigned NOT NULL DEFAULT '0',
  `batch_no`    varchar(32) NOT NULL DEFAULT '' COMMENT '批次号（批量下单）',
  `createtime`  bigint(16)  DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `order_id` (`order_id`),
  KEY `merchant_id` (`merchant_id`),
  KEY `batch_no` (`batch_no`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商家订单归属';

-- 开票申请
CREATE TABLE IF NOT EXISTS `fa_invoice` (
  `id`          int(10) unsigned NOT NULL AUTO_INCREMENT,
  `merchant_id` int(10) unsigned NOT NULL DEFAULT '0',
  `user_id`     int(10) unsigned NOT NULL DEFAULT '0',
  `amount`      decimal(10,2) NOT NULL DEFAULT '0.00',
  `type`        enum('normal','special') NOT NULL DEFAULT 'normal' COMMENT '普票/专票',
  `title`       varchar(100) NOT NULL DEFAULT '',
  `tax_no`      varchar(50)  NOT NULL DEFAULT '',
  `email`       varchar(100) NOT NULL DEFAULT '',
  `remark`      varchar(255) NOT NULL DEFAULT '',
  `status`      enum('wait','issued','reject') NOT NULL DEFAULT 'wait',
  `invoice_no`  varchar(50)  NOT NULL DEFAULT '',
  `createtime`  bigint(16) DEFAULT NULL,
  `updatetime`  bigint(16) DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `merchant_id` (`merchant_id`),
  KEY `status` (`status`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='开票申请';

-- 回滚：DROP TABLE IF EXISTS `fa_invoice`,`fa_merchant_order`,`fa_merchant`;