package opsdev

import (
	"context"
	"fmt"
	"time"

	"dashoo.cn/opms_libary/myerrors"
	opsdevmodel "dashoo.cn/opms_parent/app/model/opsdev"
	"dashoo.cn/opms_parent/app/service"

	"github.com/gogf/gf/frame/g"
)

// rawHourRow UNION ALL 查询返回的中间行
type rawHourRow struct {
	OpsUserId   int
	OpsUserName string
	WorkDate    string
	OpHour      float64
	RdHour      float64
}

// WorkHourStatService 工时统计服务
type WorkHourStatService struct {
	*service.ContextService
}

// NewWorkHourStatService 创建工时统计服务实例
func NewWorkHourStatService(ctx context.Context) (svc *WorkHourStatService, err error) {
	svc = new(WorkHourStatService)
	if svc.ContextService, err = svc.Init(ctx); err != nil {
		return nil, err
	}
	return svc, nil
}

// GetStat 获取工时统计
func (s *WorkHourStatService) GetStat(req *opsdevmodel.WorkHourStatReq) (*opsdevmodel.WorkHourStatRsp, error) {
	startDate, err := time.Parse("2006-01-02", req.StartDate)
	if err != nil {
		return nil, myerrors.TipsError("开始日期格式错误: " + err.Error())
	}
	endDate, err := time.Parse("2006-01-02", req.EndDate)
	if err != nil {
		return nil, myerrors.TipsError("结束日期格式错误: " + err.Error())
	}

	var allDates []string
	var dayHeaders []opsdevmodel.DayHeader
	weekdayNames := []string{"周日", "周一", "周二", "周三", "周四", "周五", "周六"}

	for d := startDate; !d.After(endDate); d = d.AddDate(0, 0, 1) {
		dateStr := d.Format("2006-01-02")
		allDates = append(allDates, dateStr)

		label := d.Format("01-02")
		if req.Mode == "week" {
			label = weekdayNames[d.Weekday()]
		}
		dayHeaders = append(dayHeaders, opsdevmodel.DayHeader{
			Label: label,
			Date:  dateStr,
		})
	}

	unionSQL := fmt.Sprintf(`
		SELECT ops_user_id, ops_user_name, DATE(work_date) AS work_date,
		       SUM(work_hour) AS op_hour, 0.0 AS rd_hour
		FROM ops_operation_work_hour
		WHERE work_date >= ? AND work_date <= ? AND deleted_time IS NULL
		GROUP BY ops_user_id, ops_user_name, DATE(work_date)
		UNION ALL
		SELECT ops_user_id, ops_user_name, DATE(actual_work_date) AS work_date,
		       0.0 AS op_hour, SUM(actual_work_hour) AS rd_hour
		FROM ops_event_task_work_hour
		WHERE actual_work_date >= ? AND actual_work_date <= ? AND deleted_time IS NULL
		GROUP BY ops_user_id, ops_user_name, DATE(actual_work_date)
	`)

	startDT := req.StartDate + " 00:00:00"
	endDT := req.EndDate + " 23:59:59"

	var rawRows []rawHourRow
	if err := g.DB(s.Tenant).GetScan(&rawRows, unionSQL, startDT, endDT, startDT, endDT); err != nil {
		return nil, myerrors.TipsError("查询工时数据失败: " + err.Error())
	}

	type personAgg struct {
		OpsUserId   int
		OpsUserName string
		DailyHours  map[string]opsdevmodel.DayData
	}

	personMap := make(map[int]*personAgg)

	for i := range rawRows {
		row := &rawRows[i]
		p, ok := personMap[row.OpsUserId]
		if !ok {
			p = &personAgg{
				OpsUserId:   row.OpsUserId,
				OpsUserName: row.OpsUserName,
				DailyHours:  make(map[string]opsdevmodel.DayData),
			}
			personMap[row.OpsUserId] = p
		}

		dd := p.DailyHours[row.WorkDate]
		dd.OpHour += row.OpHour
		dd.RdHour += row.RdHour
		p.DailyHours[row.WorkDate] = dd
	}

	var persons []opsdevmodel.PersonRow

	for _, p := range personMap {
		if len(req.UserIds) > 0 {
			found := false
			for _, uid := range req.UserIds {
				if uid == p.OpsUserId {
					found = true
					break
				}
			}
			if !found {
				continue
			}
		}

		dailyHours := make(map[string]opsdevmodel.DayData)
		var totalOp, totalRd float64

		for _, dateStr := range allDates {
			dd := p.DailyHours[dateStr]
			dailyHours[dateStr] = dd
			totalOp += dd.OpHour
			totalRd += dd.RdHour
		}

		persons = append(persons, opsdevmodel.PersonRow{
			UserId:      p.OpsUserId,
			UserName:    p.OpsUserName,
			DailyHours:  dailyHours,
			TotalOpHour: totalOp,
			TotalRdHour: totalRd,
		})
	}

	return &opsdevmodel.WorkHourStatRsp{
		Header:  dayHeaders,
		Persons: persons,
	}, nil
}