package maintainance

import (
	"context"
	"encoding/json"
	"fmt"

	"adm-vehicle-style/consts"
	"adm-vehicle-style/errors"
	"adm-vehicle-style/model"
	v1 "adm-vehicle-style/pb/v1"

	"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 Manual(ctx context.Context, req *v1.MaintainManualRequest) (reply *v1.MaintainManualReply, err error) {
	reply = &v1.MaintainManualReply{}
	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.StyleId == "" {
		return reply, errors.ParamsError
	}

	list, err := model.NewMaintainDetailModel().MaintainDetailList(database.DB().Where("t1.style_id = ?", req.StyleId))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, 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,
			StyleId:   req.StyleId,
			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)
		}
	}

	return reply, nil
}

func judgeCycle(mile, age int64, v model.MaintainDetailItem, m, d int64) bool {
	if mile > 0 && v.MileCycle > 0 {
		if mile >= v.StartMile && (mile-m)%v.MileCycle == 0 {
			return true
		}
	}

	if age > 0 && v.DateCycle > 0 {
		if age >= v.StartDate && (age-d)%v.DateCycle == 0 {
			return true
		}
	}

	return false
}

func generateMaintainace(
	list []model.MaintainDetailItem,
	title *model.GdMaintainTitle,
	reply *v1.MaintainManualInfoReply,
) {
	var (
		mile       int64
		age        int64
		maitainLen int64
	)

	if title.MaintainDateMinCycle == 0 && title.MaintainMileMinCycle == 0 {
		return
	}

	for {
		// 当前周期
		if title.StartMile != 0 && mile < title.StartMile {
			mile = title.StartMile
		} else {
			mile += title.MaintainMileMinCycle
		}

		if title.StartDate != 0 && age < title.StartDate {
			age = title.StartDate
		} else {
			age += title.MaintainDateMinCycle
		}

		if mile > 300000 {
			break
		}

		if age > 180 {
			break
		}

		maintain := v1.MaintainManualInfoReply_Maintain{
			Mile: uint32(mile),
			Age:  uint32(age),
		}

		for _, v := range list {
			item := v1.MaintainManualInfoReply_Items{
				ItemId:   uint32(v.ItemId),
				ItemName: v.ItemName,
			}

			if judgeCycle(mile, age, v, title.StartMile, title.StartDate) {
				item.Level = 2
				if maitainLen > 0 {
					for k := range reply.Maintain[maitainLen-1].Items {
						if reply.Maintain[maitainLen-1].Items[k].ItemId == item.ItemId {
							if reply.Maintain[maitainLen-1].Items[k].Level == 0 {
								reply.Maintain[maitainLen-1].Items[k].Level = 1
							}
						}
					}
				}
			}
			maintain.Items = append(maintain.Items, &item)
		}

		reply.Maintain = append(reply.Maintain, &maintain)
		maitainLen++
	}

	reply.Cycle = &v1.MaintainManualInfoReply_Cycle{
		StartMile: title.StartMile,
		MileCycle: title.MaintainMileMinCycle,
		StartDate: title.StartDate,
		DateCycle: title.MaintainDateMinCycle,
	}

}

func Info(ctx context.Context, req *v1.MaintainManualInfoRequest) (reply *v1.MaintainManualInfoReply, err error) {
	reply = &v1.MaintainManualInfoReply{}
	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.StyleId == "" {
		return reply, errors.ParamsError
	}

	list, err := model.NewMaintainDetailModel().MaintainDetailList(database.DB().Where("t1.style_id = ?", req.StyleId))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

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

	title, err := model.NewMaintainTitleModel().Get(database.DB().Where("style_id = ?", req.StyleId))
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.SystemError
	}

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

	maintainList := []model.MaintainDetailItem{}

	for _, v := range list {
		switch v.ItemType {
		case consts.Maintainance:
			reply.MaintainItem = append(reply.MaintainItem, &v1.MaintainManualInfoReply_MaintainItem{
				ItemId:    uint32(v.ItemId),
				ItemName:  v.ItemName,
				StartMile: v.StartMile,
				StartDate: v.StartDate,
				MileCycle: v.MileCycle,
				DateCycle: v.DateCycle,
				StyleId:   v.StyleId,
			})
			maintainList = append(maintainList, v)
		case consts.Repair:
			reply.Repair = append(reply.Repair, &v1.MaintainManualInfoReply_Repair{
				Cycle:     uint32(v.MileCycle),
				ItemName:  v.ItemName,
				ItemId:    uint32(v.ItemId),
				StartMile: v.StartMile,
				StartDate: v.StartDate,
				MileCycle: v.MileCycle,
				DateCycle: v.DateCycle,
				StyleId:   v.StyleId,
			})
		case consts.Wash:
			reply.Wash = append(reply.Wash, &v1.MaintainManualInfoReply_Wash{
				Cycle:     uint32(v.MileCycle),
				ItemName:  v.ItemName,
				ItemId:    uint32(v.ItemId),
				StartMile: v.StartMile,
				StartDate: v.StartDate,
				MileCycle: v.MileCycle,
				DateCycle: v.DateCycle,
				StyleId:   v.StyleId,
			})
		}
	}

	if len(maintainList) > 0 {
		generateMaintainace(maintainList, title, reply)
	}

	return reply, nil
}