package controllers

import (
	"fmt"
	"sort"
	"strconv"
	"strings"
	"time"

	"server/models"

	"github.com/beego/beego/v2/client/orm"
)

const scBoardMaxDays = 62

// scEntryView 看板单元格里的排班信息。
type scEntryView struct {
	ID        uint64 `json:"id"`
	PlanID    uint64 `json:"plan_id"`
	ShiftID   uint64 `json:"shift_id"`
	ShiftName string `json:"shift_name"`
	ShortName string `json:"short_name"`
	Color     string `json:"color"`
	WorkStart string `json:"work_start"`
	WorkEnd   string `json:"work_end"`
	Source    int8   `json:"source"`
	Note      string `json:"note"`
}

type scBoardRow struct {
	ID       uint                   `json:"id"`
	Name     string                 `json:"name"`
	Account  string                 `json:"account"`
	OrgID    uint64                 `json:"org_id"`
	OrgName  string                 `json:"org_name"`
	Position string                 `json:"position"`
	Days     map[string]scEntryView `json:"days"`
}

type scDateCell struct {
	Date    string `json:"date"`
	Weekday int    `json:"weekday"`
	IsToday bool   `json:"is_today"`
}

func (c *BackendOaSchedulingController) scEntryQuery(tid uint64) orm.QuerySeter {
	return models.Orm.QueryTable(new(models.OaScheduleEntry)).
		Filter("tid", tid).
		Filter("is_deleted", 0)
}

// Board 排班看板：按员工 × 日期返回区间内的排班矩阵。
// GET /backend/oa/scheduling/board?start_date=&end_date=&org_id=&include_child=1&keyword=
func (c *BackendOaSchedulingController) Board() {
	tid, _, _, ok := c.scOperator()
	if !ok {
		return
	}

	startDate := strings.TrimSpace(c.GetString("start_date"))
	endDate := strings.TrimSpace(c.GetString("end_date"))
	if startDate == "" || endDate == "" {
		// 默认展示本周（周一至周日）
		now := time.Now()
		weekday := int(now.Weekday())
		if weekday == 0 {
			weekday = 7
		}
		monday := now.AddDate(0, 0, -(weekday - 1))
		startDate = monday.Format("2006-01-02")
		endDate = monday.AddDate(0, 0, 6).Format("2006-01-02")
	}
	dates, msg := scDateSpan(startDate, endDate)
	if msg != "" {
		c.scFail(400, 400, msg)
		return
	}
	if len(dates) > scBoardMaxDays {
		c.scFail(400, 400, fmt.Sprintf("看板一次最多展示 %d 天", scBoardMaxDays))
		return
	}

	orgID := uint64(0)
	if raw := strings.TrimSpace(c.GetString("org_id")); raw != "" {
		if parsed, err := strconvParseUint(raw); err == nil {
			orgID = parsed
		}
	}
	includeChild := c.GetString("include_child") != "0"
	keyword := strings.TrimSpace(c.GetString("keyword"))
	onlyScheduled := c.GetString("only_scheduled") == "1"
	shiftFilter := uint64(0)
	if raw := strings.TrimSpace(c.GetString("shift_id")); raw != "" {
		if parsed, err := strconvParseUint(raw); err == nil {
			shiftFilter = parsed
		}
	}

	employees, err := c.scEmployeesByOrg(tid, orgID, includeChild)
	if err != nil {
		c.scFail(500, 500, "查询员工失败: "+err.Error())
		return
	}

	index := c.scLoadOrgIndex(tid)
	rows := make([]scBoardRow, 0, len(employees))
	employeeIDs := make([]uint64, 0, len(employees))
	for _, employee := range employees {
		if keyword != "" && !strings.Contains(employee.Name, keyword) && !strings.Contains(employee.Account, keyword) {
			continue
		}
		orgID := scEmployeeDepartmentID(employee)
		position := ""
		if employee.Position != nil {
			position = *employee.Position
		}
		rows = append(rows, scBoardRow{
			ID:       employee.ID,
			Name:     employee.Name,
			Account:  employee.Account,
			OrgID:    orgID,
			OrgName:  index.name(orgID),
			Position: position,
			Days:     map[string]scEntryView{},
		})
		employeeIDs = append(employeeIDs, uint64(employee.ID))
	}

	truncated := false
	const boardMaxEmployees = 500
	if len(rows) > boardMaxEmployees {
		rows = rows[:boardMaxEmployees]
		employeeIDs = employeeIDs[:boardMaxEmployees]
		truncated = true
	}

	if len(employeeIDs) > 0 {
		var entries []models.OaScheduleEntry
		_, err = c.scEntryQuery(tid).
			Filter("employee_id__in", employeeIDs).
			Filter("schedule_date__gte", dates[0]).
			Filter("schedule_date__lte", dates[len(dates)-1]).
			All(&entries)
		if err != nil && err != orm.ErrNoRows {
			c.scFail(500, 500, "查询排班失败: "+err.Error())
			return
		}

		rowIndex := map[uint]*scBoardRow{}
		for i := range rows {
			rowIndex[rows[i].ID] = &rows[i]
		}
		for _, entry := range entries {
			if shiftFilter > 0 && entry.ShiftID != shiftFilter {
				continue
			}
			row, hit := rowIndex[entry.EmployeeID]
			if !hit {
				continue
			}
			row.Days[normalizeOaDate(entry.ScheduleDate)] = scEntryView{
				ID:        entry.ID,
				PlanID:    entry.PlanID,
				ShiftID:   entry.ShiftID,
				ShiftName: entry.ShiftName,
				ShortName: entry.ShortName,
				Color:     entry.Color,
				WorkStart: entry.WorkStart,
				WorkEnd:   entry.WorkEnd,
				Source:    entry.Source,
				Note:      entry.Note,
			}
		}
	}

	if onlyScheduled {
		filtered := rows[:0]
		for _, row := range rows {
			if len(row.Days) > 0 {
				filtered = append(filtered, row)
			}
		}
		rows = filtered
	}

	today := time.Now().Format("2006-01-02")
	dateCells := make([]scDateCell, 0, len(dates))
	for _, date := range dates {
		parsed, _ := scParseDate(date)
		weekday := int(parsed.Weekday())
		if weekday == 0 {
			weekday = 7
		}
		dateCells = append(dateCells, scDateCell{Date: date, Weekday: weekday, IsToday: date == today})
	}

	// 汇总：排班人次、临时调配数、未排班人数、今日在岗、班次分布
	entryCount, tempCount, unassigned := 0, 0, 0
	todayOnDuty := 0
	shiftCounter := map[string]int{}
	shiftColor := map[string]string{}
	for _, row := range rows {
		if len(row.Days) == 0 {
			unassigned++
		}
		for date, entry := range row.Days {
			entryCount++
			if entry.Source == models.OaEntrySourceTemp {
				tempCount++
			}
			if date == today {
				todayOnDuty++
			}
			name := entry.ShiftName
			if name == "" {
				name = "未命名班次"
			}
			shiftCounter[name]++
			shiftColor[name] = entry.Color
		}
	}
	shiftDist := make([]map[string]interface{}, 0, len(shiftCounter))
	for name, count := range shiftCounter {
		shiftDist = append(shiftDist, map[string]interface{}{
			"name":  name,
			"count": count,
			"color": shiftColor[name],
		})
	}
	sort.Slice(shiftDist, func(i, j int) bool {
		return shiftDist[i]["count"].(int) > shiftDist[j]["count"].(int)
	})

	var shifts []models.OaShift
	_, _ = c.shiftQuery(tid).Filter("status", 1).OrderBy("sort", "id").All(&shifts)
	if shifts == nil {
		shifts = []models.OaShift{}
	}

	c.scOK(map[string]interface{}{
		"start_date": startDate,
		"end_date":   endDate,
		"dates":      dateCells,
		"employees":  rows,
		"shifts":     shifts,
		"truncated":  truncated,
		"summary": map[string]interface{}{
			"employee_count": len(rows),
			"entry_count":    entryCount,
			"temp_count":     tempCount,
			"unassigned":     unassigned,
			"today_on_duty":  todayOnDuty,
			"shift_dist":     shiftDist,
		},
	})
}

func strconvParseUint(value string) (uint64, error) {
	return strconv.ParseUint(strings.TrimSpace(value), 10, 64)
}

// scEntryTargets 解析临时排班/批量清除的目标员工与日期。
func (c *BackendOaSchedulingController) scEntryTargets(tid uint64, body map[string]interface{}) ([]models.BackendEmployee, []string, string) {
	employeeIDs := scUintSlice(body, "employee_ids")
	if len(employeeIDs) == 0 {
		return nil, nil, "请选择员工"
	}
	if len(employeeIDs) > scPlanMaxEmployees {
		return nil, nil, fmt.Sprintf("单次最多操作 %d 名员工", scPlanMaxEmployees)
	}

	startDate := scStringValue(body, "start_date", "schedule_date", "date")
	endDate := scStringValue(body, "end_date")
	if endDate == "" {
		endDate = startDate
	}
	dates, msg := scDateSpan(startDate, endDate)
	if msg != "" {
		return nil, nil, msg
	}
	workdays := scWorkdays(dates, scWeekdaySet(body))
	if len(workdays) == 0 {
		return nil, nil, "所选日期区间内没有符合条件的日期"
	}

	var employees []models.BackendEmployee
	_, err := c.scBaseEmployeeQuery(tid).Filter("id__in", employeeIDs).All(&employees)
	if err != nil && err != orm.ErrNoRows {
		return nil, nil, "查询员工失败: " + err.Error()
	}
	if len(employees) == 0 {
		return nil, nil, "员工不存在或已离职"
	}
	if len(employees)*len(workdays) > scPlanMaxEntries {
		return nil, nil, fmt.Sprintf("本次将产生 %d 条排班，超过单次 %d 条上限", len(employees)*len(workdays), scPlanMaxEntries)
	}
	return employees, workdays, ""
}

// SaveEntries 临时排班：给一个或多个员工在指定日期/星期安排班次。
// shift_id=0 时表示清除这些日期的排班。
// POST /backend/oa/scheduling/entries/save
func (c *BackendOaSchedulingController) SaveEntries() {
	tid, uid, username, ok := c.scOperator()
	if !ok {
		return
	}
	body := c.scBody()
	employees, workdays, msg := c.scEntryTargets(tid, body)
	if msg != "" {
		c.scFail(400, 400, msg)
		return
	}

	shiftID := scUintValue(body, "shift_id")
	var shift *models.OaShift
	if shiftID > 0 {
		loaded, found := c.scLoadShift(tid, shiftID)
		if !found {
			c.scFail(400, 400, "班次不存在或已停用")
			return
		}
		shift = loaded
	}

	note := scStringValue(body, "note")
	overwrite := true
	if _, has := body["overwrite"]; has {
		overwrite = scBoolValue(body, "overwrite")
	}

	empIDs := make([]uint64, 0, len(employees))
	for _, employee := range employees {
		empIDs = append(empIDs, uint64(employee.ID))
	}
	var existing []models.OaScheduleEntry
	_, err := c.scEntryQuery(tid).
		Filter("employee_id__in", empIDs).
		Filter("schedule_date__gte", workdays[0]).
		Filter("schedule_date__lte", workdays[len(workdays)-1]).
		All(&existing)
	if err != nil && err != orm.ErrNoRows {
		c.scFail(500, 500, "查询已有排班失败: "+err.Error())
		return
	}
	existingMap := map[string]*models.OaScheduleEntry{}
	for i := range existing {
		key := fmt.Sprintf("%d|%s", existing[i].EmployeeID, normalizeOaDate(existing[i].ScheduleDate))
		existingMap[key] = &existing[i]
	}

	index := c.scLoadOrgIndex(tid)
	stats := map[string]int{"created": 0, "updated": 0, "cleared": 0, "skipped": 0}
	now := time.Now()

	for _, employee := range employees {
		orgID := scEmployeeDepartmentID(employee)
		position := ""
		if employee.Position != nil {
			position = *employee.Position
		}
		for _, date := range workdays {
			key := fmt.Sprintf("%d|%s", employee.ID, date)
			row := existingMap[key]

			// shift_id=0：清除排班
			if shift == nil {
				if row == nil {
					stats["skipped"]++
					continue
				}
				oldShiftID, oldShiftName := row.ShiftID, row.ShiftName
				row.IsDeleted = row.ID
				row.DeleteTime = &now
				if _, updateErr := models.Orm.Update(row, "is_deleted", "delete_time"); updateErr != nil {
					c.scFail(500, 500, "清除排班失败: "+updateErr.Error())
					return
				}
				c.scWriteChange(models.Orm, tid, row.ID, row.EmployeeID, row.EmployeeName, date,
					models.OaChangeClear, oldShiftID, oldShiftName, 0, "", note, uid, username)
				delete(existingMap, key)
				stats["cleared"]++
				continue
			}

			if row != nil {
				if !overwrite {
					stats["skipped"]++
					continue
				}
				oldShiftID, oldShiftName := row.ShiftID, row.ShiftName
				row.ShiftID = shift.ID
				row.ShiftName = shift.Name
				row.ShortName = shift.ShortName
				row.Color = shift.Color
				row.WorkStart = shift.WorkStart
				row.WorkEnd = shift.WorkEnd
				row.Source = models.OaEntrySourceTemp
				row.Note = note
				row.CreatedBy = uid
				row.CreatedByName = username
				// 指定字段更新：DATE 列从库里读回 string 会带上
				// "00:00:00 +0800 CST" 后缀，全字段 Update 会写回导致 MySQL 1292
				if _, updateErr := models.Orm.Update(row,
					"shift_id", "shift_name", "short_name", "color", "work_start", "work_end",
					"source", "note", "created_by", "created_by_name"); updateErr != nil {
					c.scFail(500, 500, "调整排班失败: "+updateErr.Error())
					return
				}
				c.scWriteChange(models.Orm, tid, row.ID, row.EmployeeID, row.EmployeeName, date,
					models.OaChangeShift, oldShiftID, oldShiftName, shift.ID, shift.Name, note, uid, username)
				stats["updated"]++
				continue
			}

			entry := &models.OaScheduleEntry{
				Tid:             int(tid),
				EmployeeID:      employee.ID,
				EmployeeName:    employee.Name,
				EmployeeAccount: employee.Account,
				OrgID:           orgID,
				OrgName:         index.name(orgID),
				Position:        position,
				ScheduleDate:    date,
				ShiftID:         shift.ID,
				ShiftName:       shift.Name,
				ShortName:       shift.ShortName,
				Color:           shift.Color,
				WorkStart:       shift.WorkStart,
				WorkEnd:         shift.WorkEnd,
				Source:          models.OaEntrySourceTemp,
				Note:            note,
				CreatedBy:       uid,
				CreatedByName:   username,
			}
			if _, insertErr := models.Orm.Insert(entry); insertErr != nil {
				c.scFail(500, 500, "新增排班失败: "+insertErr.Error())
				return
			}
			existingMap[key] = entry
			c.scWriteChange(models.Orm, tid, entry.ID, entry.EmployeeID, entry.EmployeeName, date,
				models.OaChangeManual, 0, "", shift.ID, shift.Name, note, uid, username)
			stats["created"]++
		}
	}

	stats["entry_count"] = stats["created"] + stats["updated"] + stats["cleared"]
	c.scOK(stats)
}

// SaveEntryCells 批量按格子编辑排班：cells 为任意「员工 × 日期」组合（排班板多选）。
// shift_id>0 时把这些格子设为该班次（已有排班视为调班，无排班则新增临时排班）；
// shift_id=0 时清除这些格子的排班（休息 / 请假）。
// POST /backend/oa/scheduling/entries/save-cells
func (c *BackendOaSchedulingController) SaveEntryCells() {
	tid, uid, username, ok := c.scOperator()
	if !ok {
		return
	}
	body := c.scBody()

	type scCellTarget struct {
		employeeID uint
		date       string
	}
	rawCells, _ := body["cells"].([]interface{})
	seen := map[string]bool{}
	cells := make([]scCellTarget, 0, len(rawCells))
	for _, raw := range rawCells {
		item, ok := raw.(map[string]interface{})
		if !ok {
			continue
		}
		employeeID := uint(scUintValue(item, "employee_id"))
		date := normalizeOaDate(scStringValue(item, "schedule_date", "date"))
		if employeeID == 0 || date == "" {
			continue
		}
		if _, err := time.Parse("2006-01-02", date); err != nil {
			c.scFail(400, 400, "存在无效的日期: "+date)
			return
		}
		key := fmt.Sprintf("%d|%s", employeeID, date)
		if seen[key] {
			continue
		}
		seen[key] = true
		cells = append(cells, scCellTarget{employeeID: employeeID, date: date})
	}
	if len(cells) == 0 {
		c.scFail(400, 400, "请先选择要编辑的格子")
		return
	}
	if len(cells) > scPlanMaxEntries {
		c.scFail(400, 400, fmt.Sprintf("单次最多编辑 %d 个格子", scPlanMaxEntries))
		return
	}

	shiftID := scUintValue(body, "shift_id")
	var shift *models.OaShift
	if shiftID > 0 {
		loaded, found := c.scLoadShift(tid, shiftID)
		if !found {
			c.scFail(400, 400, "班次不存在或已停用")
			return
		}
		shift = loaded
	}

	// 排班来源：normal=正常排班（不显示临时标记），temp=临时调整（默认，显示「临」角标）
	entrySource := models.OaEntrySourceTemp
	if scStringValue(body, "source") == "normal" {
		entrySource = models.OaEntrySourcePlan
	}

	empIDSet := map[uint]bool{}
	empIDs := make([]uint64, 0, len(cells))
	dates := make([]string, 0, len(cells))
	for _, cell := range cells {
		if !empIDSet[cell.employeeID] {
			empIDSet[cell.employeeID] = true
			empIDs = append(empIDs, uint64(cell.employeeID))
		}
		dates = append(dates, cell.date)
	}
	var employees []models.BackendEmployee
	if _, err := c.scBaseEmployeeQuery(tid).Filter("id__in", empIDs).All(&employees); err != nil && err != orm.ErrNoRows {
		c.scFail(500, 500, "查询员工失败: "+err.Error())
		return
	}
	employeeMap := map[uint]*models.BackendEmployee{}
	for i := range employees {
		employeeMap[employees[i].ID] = &employees[i]
	}

	var existing []models.OaScheduleEntry
	if _, err := c.scEntryQuery(tid).
		Filter("employee_id__in", empIDs).
		Filter("schedule_date__in", dates).
		All(&existing); err != nil && err != orm.ErrNoRows {
		c.scFail(500, 500, "查询已有排班失败: "+err.Error())
		return
	}
	existingMap := map[string]*models.OaScheduleEntry{}
	for i := range existing {
		key := fmt.Sprintf("%d|%s", existing[i].EmployeeID, normalizeOaDate(existing[i].ScheduleDate))
		existingMap[key] = &existing[i]
	}

	index := c.scLoadOrgIndex(tid)
	note := scStringValue(body, "note")
	stats := map[string]int{"created": 0, "updated": 0, "cleared": 0, "skipped": 0}
	now := time.Now()

	for _, cell := range cells {
		employee, found := employeeMap[cell.employeeID]
		if !found {
			stats["skipped"]++
			continue
		}
		key := fmt.Sprintf("%d|%s", cell.employeeID, cell.date)
		row := existingMap[key]
		orgID := scEmployeeDepartmentID(*employee)
		position := ""
		if employee.Position != nil {
			position = *employee.Position
		}

		// 清除排班（休息 / 请假）：只处理已有排班的格子
		if shift == nil {
			if row == nil {
				stats["skipped"]++
				continue
			}
			oldShiftID, oldShiftName := row.ShiftID, row.ShiftName
			row.IsDeleted = row.ID
			row.DeleteTime = &now
			if _, updateErr := models.Orm.Update(row, "is_deleted", "delete_time"); updateErr != nil {
				c.scFail(500, 500, "清除排班失败: "+updateErr.Error())
				return
			}
			c.scWriteChange(models.Orm, tid, row.ID, row.EmployeeID, row.EmployeeName, cell.date,
				models.OaChangeClear, oldShiftID, oldShiftName, 0, "", note, uid, username)
			stats["cleared"]++
			continue
		}

		// 已有排班：调整为目标班次（调班）
		if row != nil {
			oldShiftID, oldShiftName := row.ShiftID, row.ShiftName
			row.ShiftID = shift.ID
			row.ShiftName = shift.Name
			row.ShortName = shift.ShortName
			row.Color = shift.Color
			row.WorkStart = shift.WorkStart
			row.WorkEnd = shift.WorkEnd
			row.Source = entrySource
			row.Note = note
			row.CreatedBy = uid
			row.CreatedByName = username
			// 指定字段更新：DATE 列从库里读回 string 会带上
			// "00:00:00 +0800 CST" 后缀，全字段 Update 会写回导致 MySQL 1292
			if _, updateErr := models.Orm.Update(row,
				"shift_id", "shift_name", "short_name", "color", "work_start", "work_end",
				"source", "note", "created_by", "created_by_name"); updateErr != nil {
				c.scFail(500, 500, "调整排班失败: "+updateErr.Error())
				return
			}
			c.scWriteChange(models.Orm, tid, row.ID, row.EmployeeID, row.EmployeeName, cell.date,
				models.OaChangeShift, oldShiftID, oldShiftName, shift.ID, shift.Name, note, uid, username)
			stats["updated"]++
			continue
		}

		// 无排班：新增临时排班（上班）
		entry := &models.OaScheduleEntry{
			Tid:             int(tid),
			EmployeeID:      employee.ID,
			EmployeeName:    employee.Name,
			EmployeeAccount: employee.Account,
			OrgID:           orgID,
			OrgName:         index.name(orgID),
			Position:        position,
			ScheduleDate:    cell.date,
			ShiftID:         shift.ID,
			ShiftName:       shift.Name,
			ShortName:       shift.ShortName,
			Color:           shift.Color,
			WorkStart:       shift.WorkStart,
			WorkEnd:         shift.WorkEnd,
			Source:          entrySource,
			Note:            note,
			CreatedBy:       uid,
			CreatedByName:   username,
		}
		if _, insertErr := models.Orm.Insert(entry); insertErr != nil {
			c.scFail(500, 500, "新增排班失败: "+insertErr.Error())
			return
		}
		existingMap[key] = entry
		c.scWriteChange(models.Orm, tid, entry.ID, entry.EmployeeID, entry.EmployeeName, cell.date,
			models.OaChangeManual, 0, "", shift.ID, shift.Name, note, uid, username)
		stats["created"]++
	}

	stats["cell_count"] = len(cells)
	c.scOK(stats)
}

// SwapEntry 单条调班：把某个员工某天的班次换成另一个班次。
// POST /backend/oa/scheduling/entries/swap/:id
func (c *BackendOaSchedulingController) SwapEntry() {
	tid, uid, username, ok := c.scOperator()
	if !ok {
		return
	}
	id, valid := c.scPathID(":id")
	if !valid {
		c.scFail(400, 400, "无效的排班ID")
		return
	}
	body := c.scBody()
	shiftID := scUintValue(body, "shift_id")
	if shiftID == 0 {
		c.scFail(400, 400, "请选择调换后的班次")
		return
	}
	shift, found := c.scLoadShift(tid, shiftID)
	if !found {
		c.scFail(400, 400, "班次不存在或已停用")
		return
	}

	var entry models.OaScheduleEntry
	if err := c.scEntryQuery(tid).Filter("id", id).One(&entry); err != nil {
		c.scFail(404, 404, "排班记录不存在")
		return
	}
	if entry.ShiftID == shift.ID {
		c.scFail(400, 400, "该排班已经是目标班次")
		return
	}

	reason := scStringValue(body, "reason")
	oldShiftID, oldShiftName := entry.ShiftID, entry.ShiftName
	entry.ShiftID = shift.ID
	entry.ShiftName = shift.Name
	entry.ShortName = shift.ShortName
	entry.Color = shift.Color
	entry.WorkStart = shift.WorkStart
	entry.WorkEnd = shift.WorkEnd
	entry.Source = models.OaEntrySourceTemp
	if reason != "" {
		entry.Note = reason
	}
	if _, err := models.Orm.Update(&entry); err != nil {
		c.scFail(500, 500, "调班失败: "+err.Error())
		return
	}
	c.scWriteChange(models.Orm, tid, entry.ID, entry.EmployeeID, entry.EmployeeName, normalizeOaDate(entry.ScheduleDate),
		models.OaChangeShift, oldShiftID, oldShiftName, shift.ID, shift.Name, reason, uid, username)

	c.scOK(map[string]interface{}{"entry": entry, "old_shift_name": oldShiftName})
}

// ClearEntries 批量清除排班：按明细 ID，或按员工 + 日期区间。
// POST /backend/oa/scheduling/entries/clear
func (c *BackendOaSchedulingController) ClearEntries() {
	tid, uid, username, ok := c.scOperator()
	if !ok {
		return
	}
	body := c.scBody()
	entryIDs := scUintSlice(body, "entry_ids")

	var entries []models.OaScheduleEntry
	if len(entryIDs) > 0 {
		_, err := c.scEntryQuery(tid).Filter("id__in", entryIDs).All(&entries)
		if err != nil && err != orm.ErrNoRows {
			c.scFail(500, 500, "查询排班失败: "+err.Error())
			return
		}
	} else {
		employees, workdays, msg := c.scEntryTargets(tid, body)
		if msg != "" {
			c.scFail(400, 400, msg)
			return
		}
		empIDs := make([]uint64, 0, len(employees))
		for _, employee := range employees {
			empIDs = append(empIDs, uint64(employee.ID))
		}
		_, err := c.scEntryQuery(tid).
			Filter("employee_id__in", empIDs).
			Filter("schedule_date__in", workdays).
			All(&entries)
		if err != nil && err != orm.ErrNoRows {
			c.scFail(500, 500, "查询排班失败: "+err.Error())
			return
		}
	}

	if len(entries) == 0 {
		c.scOK(map[string]interface{}{"cleared": 0})
		return
	}
	if len(entries) > scPlanMaxEntries {
		c.scFail(400, 400, fmt.Sprintf("单次最多清除 %d 条排班", scPlanMaxEntries))
		return
	}

	reason := scStringValue(body, "reason")
	now := time.Now()
	tx, err := orm.NewOrm().Begin()
	if err != nil {
		c.scFail(500, 500, "清除排班失败: "+err.Error())
		return
	}
	for i := range entries {
		entry := &entries[i]
		oldShiftID, oldShiftName := entry.ShiftID, entry.ShiftName
		entry.IsDeleted = entry.ID
		entry.DeleteTime = &now
		if _, err := tx.Update(entry, "is_deleted", "delete_time"); err != nil {
			_ = tx.Rollback()
			c.scFail(500, 500, "清除排班失败: "+err.Error())
			return
		}
		c.scWriteChange(tx, tid, entry.ID, entry.EmployeeID, entry.EmployeeName, normalizeOaDate(entry.ScheduleDate),
			models.OaChangeClear, oldShiftID, oldShiftName, 0, "", reason, uid, username)
	}
	if err := tx.Commit(); err != nil {
		c.scFail(500, 500, "清除排班失败: "+err.Error())
		return
	}

	c.scOK(map[string]interface{}{"cleared": len(entries)})
}

// MyBoard 当前登录用户的排班：按登录账号匹配员工档案，返回区间内每天的排班，
// 供日程日历渲染上班/休息背景。
// GET /backend/oa/scheduling/my?start_date=&end_date=
func (c *BackendOaSchedulingController) MyBoard() {
	tid, _, username, ok := c.scOperator()
	if !ok {
		return
	}

	startDate := strings.TrimSpace(c.GetString("start_date"))
	endDate := strings.TrimSpace(c.GetString("end_date"))
	if startDate == "" || endDate == "" {
		now := time.Now()
		startDate = now.Format("2006-01-02")
		endDate = startDate
	}
	dates, msg := scDateSpan(startDate, endDate)
	if msg != "" {
		c.scFail(400, 400, msg)
		return
	}
	if len(dates) > scBoardMaxDays {
		c.scFail(400, 400, fmt.Sprintf("一次最多查询 %d 天", scBoardMaxDays))
		return
	}

	// 账号未关联员工档案时返回空列表，前端静默不渲染排班背景
	var employee models.BackendEmployee
	if err := c.scBaseEmployeeQuery(tid).Filter("account", username).One(&employee); err != nil {
		c.scOK(map[string]interface{}{"employee": nil, "list": []map[string]interface{}{}})
		return
	}

	var entries []models.OaScheduleEntry
	_, _ = c.scEntryQuery(tid).
		Filter("employee_id", employee.ID).
		Filter("schedule_date__gte", startDate).
		Filter("schedule_date__lte", endDate).
		OrderBy("schedule_date").
		All(&entries)

	list := make([]map[string]interface{}, 0, len(entries))
	for i := range entries {
		e := entries[i]
		list = append(list, map[string]interface{}{
			"date":       e.ScheduleDate,
			"shift_id":   e.ShiftID,
			"shift_name": e.ShiftName,
			"short_name": e.ShortName,
			"color":      e.Color,
			"work_start": e.WorkStart,
			"work_end":   e.WorkEnd,
			"note":       e.Note,
		})
	}
	c.scOK(map[string]interface{}{
		"employee": map[string]interface{}{"id": employee.ID, "name": employee.Name},
		"list":     list,
	})
}

// ChangeList 排班变更记录（最近 100 条），用于追溯临时调配。
// GET /backend/oa/scheduling/changes?start_date=&end_date=&employee_id=
func (c *BackendOaSchedulingController) ChangeList() {
	tid, _, _, ok := c.scOperator()
	if !ok {
		return
	}
	qs := models.Orm.QueryTable(new(models.OaScheduleChange)).Filter("tid", tid)
	if start := strings.TrimSpace(c.GetString("start_date")); isValidOaDate(start) {
		qs = qs.Filter("schedule_date__gte", start)
	}
	if end := strings.TrimSpace(c.GetString("end_date")); isValidOaDate(end) {
		qs = qs.Filter("schedule_date__lte", end)
	}
	if raw := strings.TrimSpace(c.GetString("employee_id")); raw != "" {
		if employeeID, err := strconvParseUint(raw); err == nil {
			qs = qs.Filter("employee_id", employeeID)
		}
	}
	var rows []models.OaScheduleChange
	_, err := qs.OrderBy("-id").Limit(100).All(&rows)
	if err != nil && err != orm.ErrNoRows {
		c.scFail(500, 500, "查询变更记录失败: "+err.Error())
		return
	}
	if rows == nil {
		rows = []models.OaScheduleChange{}
	}
	for i := range rows {
		rows[i].ScheduleDate = normalizeOaDate(rows[i].ScheduleDate)
	}
	c.scOK(map[string]interface{}{"list": rows})
}

// ScheduleEmployeeOptions 排班可选员工（供“指定员工”范围选择）。
// GET /backend/oa/scheduling/employees?org_id=&include_child=1&keyword=
func (c *BackendOaSchedulingController) ScheduleEmployeeOptions() {
	tid, _, _, ok := c.scOperator()
	if !ok {
		return
	}
	orgID := uint64(0)
	if raw := strings.TrimSpace(c.GetString("org_id")); raw != "" {
		if parsed, err := strconvParseUint(raw); err == nil {
			orgID = parsed
		}
	}
	includeChild := c.GetString("include_child") != "0"
	keyword := strings.TrimSpace(c.GetString("keyword"))

	employees, err := c.scEmployeesByOrg(tid, orgID, includeChild)
	if err != nil {
		c.scFail(500, 500, "查询员工失败: "+err.Error())
		return
	}
	list := c.scEmployeeDTOs(tid, employees)
	if keyword != "" {
		filtered := make([]schedulingEmployee, 0, len(list))
		for _, item := range list {
			if strings.Contains(item.Name, keyword) || strings.Contains(item.Account, keyword) {
				filtered = append(filtered, item)
			}
		}
		list = filtered
	}
	if list == nil {
		list = []schedulingEmployee{}
	}
	c.scOK(map[string]interface{}{"list": list, "total": len(list)})
}