-- 派车日历自动同步现场日历，MySQL 5.7 / utf8mb4，可重复执行。
-- 前置：2026-10-30-dispatch-calendar-document-type.sql。先执行迁移再部署后端和 Web。
-- 只改变结构：历史来源默认 site_sync_enabled=0，后续编辑也不补录。
-- 上线后后端新建来源显式设置为1；手工现场记录仍为0。
SET NAMES utf8mb4;

SET @col_exists = (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'pl_dispatch_calendar'
    AND COLUMN_NAME = 'site_sync_enabled'
);
SET @ddl = IF(@col_exists = 0,
  'ALTER TABLE `pl_dispatch_calendar` ADD COLUMN `site_sync_enabled` smallint NOT NULL DEFAULT 0 COMMENT ''是否启用现场同步：仅新建来源置1，历史为0'' AFTER `document_type`',
  'SELECT 1');
PREPARE stmt FROM @ddl;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SET @col_exists = (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'pl_dispatch_calendar'
    AND COLUMN_NAME = 'source_record_id'
);
SET @ddl = IF(@col_exists = 0,
  'ALTER TABLE `pl_dispatch_calendar` ADD COLUMN `source_record_id` varchar(64) DEFAULT NULL COMMENT ''自动现场记录的来源派车ID，手工记录为空'' AFTER `site_sync_enabled`',
  'SELECT 1');
PREPARE stmt FROM @ddl;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SET @idx_exists = (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'pl_dispatch_calendar'
    AND INDEX_NAME = 'uk_dispatch_calendar_source'
);
SET @ddl = IF(@idx_exists = 0,
  'ALTER TABLE `pl_dispatch_calendar` ADD UNIQUE KEY `uk_dispatch_calendar_source` (`tenant_no`, `source_record_id`)',
  'SELECT 1');
PREPARE stmt FROM @ddl;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;