package job

import (
	"context"
	"time"

	"github.com/go-nunu/nunu-layout-advanced/internal/service"
	"github.com/go-nunu/nunu-layout-advanced/pkg/log"
)

// ShardingJob 分表管理定时任务
type ShardingJob struct {
	shardingService service.ShardingService
	logger          *log.Logger
}

func NewShardingJob(
	shardingService service.ShardingService,
	logger *log.Logger,
) *ShardingJob {
	return &ShardingJob{
		shardingService: shardingService,
		logger:          logger,
	}
}

// InitSharding 初始化分表(启动时执行一次)
func (j *ShardingJob) InitSharding() {
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	j.logger.Info("执行分表初始化任务...")
	
	err := j.shardingService.InitializeSharding(ctx)
	if err != nil {
		j.logger.Error("分表初始化失败: " + err.Error())
	} else {
		j.logger.Info("分表初始化完成")
	}
}

// CleanOldTables 清理过期分表(定时执行)
func (j *ShardingJob) CleanOldTables() {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
	defer cancel()

	j.logger.Info("执行分表清理任务...")
	
	err := j.shardingService.CleanOldTables(ctx)
	if err != nil {
		j.logger.Error("分表清理失败: " + err.Error())
	} else {
		j.logger.Info("分表清理完成")
	}
}

// CheckNewPeriodTables 检查是否需要创建新周期的分表(每月第一天执行)
func (j *ShardingJob) CheckNewPeriodTables() {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
	defer cancel()

	j.logger.Info("检查是否需要创建新周期分表...")
	
	// 检查是否是月初第一天
	now := time.Now()
	if now.Day() != 1 {
		j.logger.Info("不是月初第一天，跳过新周期分表检查")
		return
	}
	
	err := j.shardingService.InitializeSharding(ctx)
	if err != nil {
		j.logger.Error("新周期分表创建失败: " + err.Error())
	} else {
		j.logger.Info("新周期分表检查完成")
	}
}