-- =============================================================================
-- 联系人正式库统一：正式客户/供应商联系人通用表 yz_backend_contact_company
--
-- 目标：
--   1. 正式客户/供应商联系人统一到 `yz_backend_contact_company`
--      （backend 端「公司联系人」通用表，命名与 yz_backend_contact 保持一致）；
--   2. 兼容历史表名 `yz_backend_erp_company_contact`：
--        - 若新表不存在、旧表存在，直接 RENAME（结构与数据 100% 保留）；
--        - 若两表并存，则去重合并进新表，旧表改名为 *_bak 备份保留；
--   3. 迁移历史死表 `yz_tenant_crm_contact`（若存在且有数据）：去重并入新表，
--      原表改名为 `yz_tenant_crm_contact_bak` 保留；
--   4. 线索/商机联系人仍然只存过程库 `yz_backend_crm_entity_contact`（本脚本不动）。
--
-- 去重键（判定为同一联系人）：tenant_id + company_type + company_id + name + mobiles
-- 说明：
--   - 脚本幂等，可重复执行；
--   - 任何迁移都是「先备份原表 / 或直接改名」再按去重键补插，绝不删除数据；
--   - 执行本脚本的同时需要部署新版后端（模型表名已指向 yz_backend_contact_company）。
-- =============================================================================

SET NAMES utf8mb4;

-- 记录初始状态
SET @has_new := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_contact_company'
);
SET @has_old_company := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_erp_company_contact'
);

-- -----------------------------------------------------------------------------
-- 1. 新表不存在、旧表存在 → 直接改名（保留全部结构、索引、自增、数据）
-- -----------------------------------------------------------------------------
SET @sql := IF(@has_new = 0 AND @has_old_company > 0,
  'RENAME TABLE `yz_backend_erp_company_contact` TO `yz_backend_contact_company`',
  'SELECT ''step1: 跳过直接改名'' AS note');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- 重新计算状态
SET @has_new := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_contact_company'
);
SET @has_old_company := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_erp_company_contact'
);

-- -----------------------------------------------------------------------------
-- 2. 确保正式表存在（新表也不存在、旧表也不存在时创建）
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS `yz_backend_contact_company` (
  `id`           bigint(20)   NOT NULL AUTO_INCREMENT COMMENT '自增主键ID',
  `tenant_id`    varchar(64)  NOT NULL DEFAULT '' COMMENT '租户ID',
  `company_type` varchar(20)  NOT NULL DEFAULT '' COMMENT '公司类型：customer=客户，supplier=供应商',
  `company_id`   bigint(20)   NOT NULL DEFAULT 0 COMMENT '公司ID（客户/供应商ID）',
  `name`         varchar(50)  NOT NULL DEFAULT '' COMMENT '联系人姓名',
  `gender`       tinyint(4)   NOT NULL DEFAULT 0 COMMENT '性别：0-未知 1-男 2-女',
  `phone`        varchar(20)  NOT NULL DEFAULT '' COMMENT '座机',
  `mobiles`      text COMMENT '手机号，JSON数组，最多5个',
  `wechat`       varchar(50)  NOT NULL DEFAULT '' COMMENT '微信',
  `qq`           varchar(50)  NOT NULL DEFAULT '' COMMENT 'QQ',
  `dingtalk`     varchar(50)  NOT NULL DEFAULT '' COMMENT '钉钉',
  `email`        varchar(100) NOT NULL DEFAULT '' COMMENT '邮箱',
  `department`   varchar(50)  NOT NULL DEFAULT '' COMMENT '部门',
  `position`     varchar(50)  NOT NULL DEFAULT '' COMMENT '职位',
  `home_address` varchar(255) NOT NULL DEFAULT '' COMMENT '家庭住址',
  `is_primary`   tinyint(4)   NOT NULL DEFAULT 0 COMMENT '是否主联系人：0-否 1-是',
  `status`       tinyint(4)   NOT NULL DEFAULT 1 COMMENT '状态：0-离职 1-在职',
  `remark`       text COMMENT '备注',
  `create_time`  datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time`  datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  `delete_time`  datetime     DEFAULT NULL COMMENT '删除时间（软删除）',
  PRIMARY KEY (`id`),
  KEY `idx_tenant_company` (`tenant_id`,`company_type`,`company_id`) COMMENT '按公司查询联系人',
  KEY `idx_name` (`tenant_id`,`name`) COMMENT '按姓名查询',
  KEY `idx_delete_time` (`delete_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='正式客户/供应商联系人通用表（backend 公司联系人）';

-- -----------------------------------------------------------------------------
-- 3. 两表并存时：旧表 yz_backend_erp_company_contact 去重并入新表，再改名备份
-- -----------------------------------------------------------------------------
SET @sql := IF(@has_old_company > 0,
'INSERT INTO `yz_backend_contact_company`
  (`tenant_id`,`company_type`,`company_id`,`name`,`gender`,`phone`,`mobiles`,`wechat`,`qq`,`dingtalk`,`email`,`department`,`position`,`home_address`,`is_primary`,`status`,`remark`,`create_time`,`update_time`,`delete_time`)
 SELECT
  CAST(o.`tenant_id` AS CHAR), o.`company_type`, o.`company_id`, o.`name`, o.`gender`, o.`phone`, o.`mobiles`,
  IFNULL(o.`wechat`, ''''), IFNULL(o.`qq`, ''''), IFNULL(o.`dingtalk`, ''''), IFNULL(o.`email`, ''''),
  IFNULL(o.`department`, ''''), IFNULL(o.`position`, ''''), IFNULL(o.`home_address`, ''''),
  IFNULL(o.`is_primary`, 0), IFNULL(o.`status`, 1), o.`remark`,
  IFNULL(o.`create_time`, NOW()), IFNULL(o.`update_time`, NOW()), o.`delete_time`
 FROM `yz_backend_erp_company_contact` o
 WHERE NOT EXISTS (
   SELECT 1 FROM `yz_backend_contact_company` n
   WHERE n.`tenant_id` = CAST(o.`tenant_id` AS CHAR)
     AND n.`company_type` = o.`company_type`
     AND n.`company_id` = o.`company_id`
     AND n.`name` = o.`name`
     AND IFNULL(n.`mobiles`, '''') = IFNULL(o.`mobiles`, '''')
 )',
'SELECT ''step3: 无并存旧公司联系人表，跳过合并'' AS note');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @bak_company_exists := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_erp_company_contact_bak'
);
SET @sql := IF(@has_old_company > 0 AND @bak_company_exists = 0,
  'RENAME TABLE `yz_backend_erp_company_contact` TO `yz_backend_erp_company_contact_bak`',
  'SELECT ''step3: 跳过改名备份'' AS note');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- -----------------------------------------------------------------------------
-- 4. 历史死表 yz_tenant_crm_contact（related_type 1=客户/2=供应商）→ 新表，原表备份
--    mobiles 由单个 mobile 转为 JSON 数组；相关字段做空值兜底。
-- -----------------------------------------------------------------------------
SET @has_dead := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_tenant_crm_contact'
);

SET @sql := IF(@has_dead > 0,
'INSERT INTO `yz_backend_contact_company`
  (`tenant_id`,`company_type`,`company_id`,`name`,`gender`,`phone`,`mobiles`,`wechat`,`qq`,`dingtalk`,`email`,`department`,`position`,`home_address`,`is_primary`,`status`,`remark`,`create_time`,`update_time`,`delete_time`)
 SELECT
  CAST(o.`tenant_id` AS CHAR),
  IF(o.`related_type` = 2, ''supplier'', ''customer''),
  o.`related_id`, o.`contact_name`, IFNULL(o.`gender`, 0), IFNULL(o.`phone`, ''''),
  CASE WHEN o.`mobile` IS NULL OR o.`mobile` = '''' THEN NULL ELSE CONCAT(''["'', o.`mobile`, ''"]'') END,
  '''', '''', '''', IFNULL(o.`email`, ''''), IFNULL(o.`department`, ''''), IFNULL(o.`position`, ''''), '''',
  IFNULL(o.`is_primary`, 0), 1, IFNULL(o.`remark`, ''''),
  IFNULL(o.`create_time`, NOW()), IFNULL(o.`update_time`, NOW()),
  CASE WHEN IFNULL(o.`is_deleted`, 0) = 1 THEN NOW() ELSE NULL END
 FROM `yz_tenant_crm_contact` o
 WHERE o.`contact_name` IS NOT NULL AND o.`contact_name` <> ''''
   AND NOT EXISTS (
     SELECT 1 FROM `yz_backend_contact_company` n
     WHERE n.`tenant_id` = CAST(o.`tenant_id` AS CHAR)
       AND n.`company_type` = IF(o.`related_type` = 2, ''supplier'', ''customer'')
       AND n.`company_id` = o.`related_id`
       AND n.`name` = o.`contact_name`
       AND IFNULL(n.`mobiles`, '''') = IFNULL(
             CASE WHEN o.`mobile` IS NULL OR o.`mobile` = '''' THEN NULL ELSE CONCAT(''["'', o.`mobile`, ''"]'') END, '''')
   )',
'SELECT ''步骤4: 无 yz_tenant_crm_contact，跳过'' AS note');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @bak_dead_exists := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_tenant_crm_contact_bak'
);
SET @sql := IF(@has_dead > 0 AND @bak_dead_exists = 0,
  'RENAME TABLE `yz_tenant_crm_contact` TO `yz_tenant_crm_contact_bak`',
  'SELECT ''步骤4: 跳过改名备份'' AS note');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- -----------------------------------------------------------------------------
-- 5. 重复数据检测（只查询、不修改/不删除，供人工核对）
-- -----------------------------------------------------------------------------
SELECT
  `tenant_id`,
  `company_type`,
  `company_id`,
  `name`,
  IFNULL(`mobiles`, '') AS `mobiles`,
  COUNT(*) AS `dup_count`,
  GROUP_CONCAT(`id` ORDER BY `id`) AS `dup_ids`
FROM `yz_backend_contact_company`
WHERE `delete_time` IS NULL
GROUP BY `tenant_id`, `company_type`, `company_id`, `name`, IFNULL(`mobiles`, '')
HAVING COUNT(*) > 1;

-- -----------------------------------------------------------------------------
-- 6. 迁移结果核对（新表与备份表条数）
-- -----------------------------------------------------------------------------
SET @bak_company_exists2 := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_erp_company_contact_bak'
);
SET @bak_dead_exists2 := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_tenant_crm_contact_bak'
);

SELECT 'yz_backend_contact_company' AS `table_name`, COUNT(*) AS `row_count`
FROM `yz_backend_contact_company`;

SET @sql := IF(@bak_company_exists2 > 0,
  'SELECT ''yz_backend_erp_company_contact_bak'' AS `table_name`, COUNT(*) AS `row_count` FROM `yz_backend_erp_company_contact_bak`',
  'SELECT ''yz_backend_erp_company_contact_bak（不存在）'' AS `table_name`, 0 AS `row_count`');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @sql := IF(@bak_dead_exists2 > 0,
  'SELECT ''yz_tenant_crm_contact_bak'' AS `table_name`, COUNT(*) AS `row_count` FROM `yz_tenant_crm_contact_bak`',
  'SELECT ''yz_tenant_crm_contact_bak（不存在）'' AS `table_name`, 0 AS `row_count`');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;