package maintainance

import (
	"adm-vehicle-style/consts"
	"adm-vehicle-style/errors"
	"adm-vehicle-style/model"
	v1 "adm-vehicle-style/pb/v1"
	"context"
	"encoding/json"
	"fmt"
	"time"

	"git.getensh.com/common/gopkgsv2/database"
	"git.getensh.com/common/gopkgsv2/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
	"gorm.io/gorm"
)

func TemplateList(ctx context.Context, req *v1.TemplateListRequest) (reply *v1.TemplateListReply, err error) {
	reply = &v1.TemplateListReply{}
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	db := database.DB()
	if req.Name != "" {
		db = db.Where("name like", "%"+req.Name+"%")
	}

	list, err := model.NewMaintenanceTemplateModel().List(db)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return reply, nil
		}
	}

	reply.List = make([]*v1.Template, 0, len(list))
	for _, v := range list {
		reply.List = append(reply.List, &v1.Template{
			Id:   v.ID,
			Name: v.Name,
		})
	}

	return reply, nil
}

func TemplateDetailList(ctx context.Context, req *v1.TemplateDetailListRequest) (reply *v1.TemplateDetailListReply, err error) {
	reply = &v1.TemplateDetailListReply{}
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	db := database.DB()
	if req.Tid > 0 {
		db = db.Where("tid = ?", req.Tid)
	}

	count, err := model.NewMaintenanceTitleTemplateModel().Count(db)
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound || count == 0 {
		return reply, nil
	}

	pageSize := consts.PageSize
	if req.PageSize != 0 {
		pageSize = int(req.PageSize)
	}

	// 构造分页类
	pagination := model.NewPagination(int(req.Page), pageSize, 0).GetLimitOffset()
	list, err := model.NewMaintenanceTitleTemplateModel().List(db, pagination)
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound {
		return reply, nil
	}

	reply.List = make([]*v1.TemplateDetail, 0, len(list))
	for _, v := range list {
		template, err := model.NewMaintenanceTemplateModel().Get(database.DB().Where("id = ?", v.Tid))
		if err != nil && err != gorm.ErrRecordNotFound {
			return reply, errors.SystemError
		}

		if err == gorm.ErrRecordNotFound {
			return reply, nil
		}
		reply.List = append(reply.List, &v1.TemplateDetail{
			Id:                   v.ID,
			Name:                 template.Name,
			StartMile:            v.StartMile,
			StartDate:            v.StartDate,
			MaintainMileMinCycle: v.MaintainMileMinCycle,
			MaintainDateMinCycle: v.MaintainDateMinCycle,
			Tid:                  v.Tid,
		})
	}

	reply.Total = count

	return reply, nil
}

func TemplateDetail(ctx context.Context, req *v1.TemplateDetailRequest) (reply *v1.TemplateDetailReply, err error) {
	reply = &v1.TemplateDetailReply{}
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	list, err := model.NewMaintainDetailTemplateModel().ListByItem(database.DB().Where("tid = ?", req.Tid))
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return reply, nil
		}

		return reply, errors.SystemError
	}

	template, err := model.NewMaintenanceTemplateModel().Get(database.DB().Where("id = ?", req.Tid))
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound {
		return reply, nil
	}

	for _, v := range list {
		i := v1.MaintainItem{
			Id:        v.ID,
			Item:      v.ItemName,
			StartMile: v.StartMile,
			StartDate: v.StartDate,
			MileCycle: v.MileCycle,
			DateCycle: v.DateCycle,
			ItemId:    v.ItemId,
		}
		switch v.ItemType {
		case consts.Maintainance:
			reply.Maintainance = append(reply.Maintainance, &i)
		case consts.Repair:
			reply.Repair = append(reply.Repair, &i)
		case consts.Wash:
			reply.Wash = append(reply.Wash, &i)
		}
	}

	reply.Name = template.Name

	return reply, nil
}

func addTemplateTitle(db *gorm.DB, titleId, tid, startMile, mileCycle, startDate, dateCycle int64) error {
	if titleId > 0 {
		values := map[string]interface{}{
			"start_mile":              startMile,
			"start_date":              startDate,
			"maintain_mile_min_cycle": mileCycle,
			"maintain_date_min_cycle": dateCycle,
			"repair_cycle":            mileCycle,
			"wash_cycle":              mileCycle,
			"updated_at":              time.Now().Format("2006-01-02 15:04:05"),
		}

		if err := model.NewMaintenanceTitleTemplateModel().Update(db.Where("id = ?", titleId), values); err != nil {
			return errors.SystemError
		}
	} else {
		// 没有title
		title := &model.MaintenanceTitleTemplate{
			Tid:                  tid,
			StartMile:            startMile,
			StartDate:            startDate,
			MaintainMileMinCycle: mileCycle,
			MaintainDateMinCycle: dateCycle,
			RepairCycle:          mileCycle,
			WashCycle:            mileCycle,
			CreatedAt:            time.Now(),
			UpdatedAt:            time.Now(),
		}

		if err := model.NewMaintenanceTitleTemplateModel().Insert(db, title); err != nil {
			return errors.SystemError
		}
	}

	return nil
}

func AddTemplateDetail(ctx context.Context, req *v1.AddTemplateDetailRequest) (reply *v1.AddTemplateDetailReply, err error) {
	reply = &v1.AddTemplateDetailReply{}
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	if req.Tid == 0 && req.Name == "" {
		return reply, errors.ParamsError
	}

	var (
		hasOil  bool
		tid     = req.Tid
		titleId int64
		tx      = database.DB().Begin()
	)

	defer func() {
		if err != nil {
			tx.Rollback()
			return
		}

		tx.Commit()
	}()

	if req.Tid > 0 {
		// 判断是否插入机油
		info, err := model.NewMaintainDetailTemplateModel().Get(database.DB().Where("tid = ? AND item_id = ?", req.Tid, consts.Oil))
		if err != nil && err != gorm.ErrRecordNotFound {
			return nil, errors.SystemError
		}

		if err == nil && info != nil && info.ID != 0 {
			hasOil = true
		}

		// 获取maintain_title
		title, err := model.NewMaintenanceTitleTemplateModel().Get(database.DB().Where("tid = ?", req.Tid))
		if err != nil && err != gorm.ErrRecordNotFound {
			return nil, errors.SystemError
		}

		if err == nil && title != nil && title.ID > 0 {
			titleId = title.ID
		}
	} else if req.Tid == 0 && req.Name != "" {
		// 写入新模板
		template := &model.MaintenanceTemplate{
			Name: req.Name,
		}

		err = model.NewMaintenanceTemplateModel().Insert(tx, template)
		if err != nil {
			return reply, errors.SystemError
		}

		tid = template.ID
	}

	// 写入详情
	detail := &model.MaintenanceDetailTemplate{
		Tid:       tid,
		ItemId:    req.ItemId,
		StartMile: req.StartMile,
		MileCycle: req.MileCycle,
		StartDate: req.StartDate,
		DateCycle: req.DateCycle,
		CreatedAt: time.Now(),
		UpdatedAt: time.Now(),
	}

	if err = model.NewMaintainDetailTemplateModel().Insert(tx, detail); err != nil {
		return reply, errors.SystemError
	}

	reply.Tid = tid

	// 以前插入机油，直接结束, 且当次插入不是机油
	if hasOil && req.ItemId != consts.Oil {
		return reply, nil
	}

	// 如果此条为机油
	if req.ItemId == consts.Oil {
		if err := addTemplateTitle(tx, titleId, tid, req.StartMile, req.MileCycle, req.StartDate, req.DateCycle); err != nil {
			return reply, err
		}
		return reply, nil
	}

	// 如果都不是
	// 获取已有的维保数据
	list, err := model.NewMaintainDetailTemplateModel().
		List(database.DB().Where("tid = ?", req.Tid))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

	var (
		idx      int
		miniMile int64
	)

	list = append(list, model.MaintenanceDetailTemplate{
		StartMile: req.StartMile,
		MileCycle: req.MileCycle,
		StartDate: req.StartDate,
		DateCycle: req.DateCycle,
	})

	for k, v := range list {
		if miniMile == 0 {
			miniMile = v.MileCycle
			idx = k
		}
		if v.MileCycle != 0 && v.MileCycle < miniMile {
			miniMile = v.MileCycle
			idx = k
		}
	}

	if err := addTemplateTitle(tx, titleId, tid, list[idx].StartMile, list[idx].MileCycle, list[idx].StartDate, list[idx].DateCycle); err != nil {
		return reply, err
	}

	return reply, nil
}

func UpdateTemplateDetail(ctx context.Context, req *v1.UpdateMaintainManualRequest) (reply *v1.EmptyReply, err error) {
	reply = &v1.EmptyReply{}
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	if req.Name != "" && req.Tid > 0 {
		if err := model.NewMaintenanceTemplateModel().Update(database.DB().Where("id = ?", req.Tid), map[string]interface{}{
			"name": req.Name,
		}); err != nil {
			return reply, errors.SystemError
		}
	}

	if req.Id == 0 {
		return reply, nil
	}

	info, err := model.NewMaintainDetailTemplateModel().Get(database.DB().Where("id = ?", req.Id))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

	// 获取maintain_title
	title, err := model.NewMaintenanceTitleTemplateModel().Get(database.DB().Where("tid = ?", info.Tid))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

	// 判断是否插入机油
	oil, err := model.NewMaintainDetailTemplateModel().Get(database.DB().Where("tid = ? AND item_id = ?", info.Tid, consts.Oil))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

	var (
		hasOil bool
	)

	if err == nil && oil != nil && oil.ID != 0 {
		hasOil = true
	}

	var (
		tx = database.DB().Begin()
	)

	defer func() {
		if err != nil {
			tx.Rollback()
			return
		}

		tx.Commit()
	}()

	values := map[string]interface{}{
		"start_mile": req.StartMile,
		"mile_cycle": req.MileCycle,
		"start_date": req.StartDate,
		"date_cycle": req.DateCycle,
		"item_id":    req.ItemId,
		"updated_at": time.Now().Format("2006-01-02 15:04:05"),
	}

	if err := model.NewMaintainDetailTemplateModel().Update(tx.Where("id = ?", req.Id), values); err != nil {
		return reply, errors.SystemError
	}

	// 以前插入机油，直接结束, 且当次插入不是机油
	if hasOil && req.ItemId != consts.Oil {
		return reply, nil
	}

	// 如果此条为机油
	if req.ItemId == consts.Oil {
		if err := addTemplateTitle(tx, title.ID, info.Tid, req.StartMile, req.MileCycle, req.StartDate, req.DateCycle); err != nil {
			return reply, err
		}
		return reply, nil
	}

	// 如果都不是
	// 获取已有的维保数据
	list, err := model.NewMaintainDetailTemplateModel().List(database.DB().Where("tid = ?", info.Tid))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

	var (
		idx      int
		miniMile int64
	)

	if len(list) > 0 {
		for k := range list {
			if list[k].ID == req.Id {
				list[k].StartMile = req.StartMile
				list[k].StartDate = req.StartDate
				list[k].MileCycle = req.MileCycle
				list[k].DateCycle = req.DateCycle
			}
		}
	} else {
		list = append(list, model.MaintenanceDetailTemplate{
			StartMile: req.StartMile,
			MileCycle: req.MileCycle,
			StartDate: req.StartDate,
			DateCycle: req.DateCycle,
		})

	}

	for k, v := range list {
		if miniMile == 0 {
			miniMile = v.MileCycle
			idx = k
		}
		if v.MileCycle != 0 && v.MileCycle < miniMile {
			miniMile = v.MileCycle
			idx = k
		}
	}

	if err := addTemplateTitle(tx, title.ID, info.Tid, list[idx].StartMile, list[idx].MileCycle, list[idx].StartDate, list[idx].DateCycle); err != nil {
		return reply, err
	}

	return reply, nil
}