package domain

import (
	"admin/apps/user/domain/entity"
	"admin/apps/user/domain/repo"
	"admin/apps/user/model"
	"admin/internal/consts"
	"admin/internal/model/dto"
	"fmt"
	"gorm.io/gorm"
)

type CommonResourceService struct {
	userRepo  repo.IUserRepo
	tokenRepo repo.ITokenRepo
}

func initCommonResourcesRepo(db *gorm.DB) {
	r(consts.ResourcesName_SysUser, "用户管理", repo.NewCommonResourceRepo(db, &model.User{}), ShowMethod_Get|ShowMethod_Post|ShowMethod_Put|ShowMethod_Delete)
	r(consts.ResourcesName_SysCharacter, "角色管理", repo.NewCommonResourceRepo(db, &model.Character{}), ShowMethod_Get|ShowMethod_Post|ShowMethod_Put|ShowMethod_Delete)
}

func NewCommonResourceService(db *gorm.DB) *CommonResourceService {
	initCommonResourcesRepo(db)
	svc := &CommonResourceService{
		userRepo:  repo.NewUserRepo(db),
		tokenRepo: repo.NewTokenRepo(db),
	}
	return svc
}

func (svc *CommonResourceService) List(resource string, listParams *dto.CommonListReq) (int, []*dto.CommonDtoFieldDesc, []dto.CommonDtoValues, error) {
	totalCount, fieldsDescInfo, etList, err := findCommResourceRepo(resource).List(listParams)
	if err != nil {
		return 0, nil, nil, err
	}
	retList := make([]dto.CommonDtoValues, 0, len(etList))
	for _, v := range etList {
		dtoObj := v.ToCommonDto()
		if resource == consts.ResourcesName_SysUser {
			if name, find := dtoObj["UserName"]; find && name == "admin" {
				// 不显示初始管理员数据
				continue
			}
		}
		if resource == consts.ResourcesName_SysCharacter {
			if name, find := dtoObj["Name"]; find && name == "admin" {
				// 不显示初始管理员数据
				continue
			}
		}
		retList = append(retList, v.ToCommonDto())
	}

	return totalCount, fieldsDescInfo, retList, nil
}

func (svc *CommonResourceService) GetById(resource string, id int) ([]*dto.CommonDtoFieldDesc, dto.CommonDtoValues, *entity.CommonResource, bool, error) {
	fieldsDescInfo, et, find, err := findCommResourceRepo(resource).GetById(id)
	if err != nil {
		return nil, nil, nil, false, err
	}

	return fieldsDescInfo, et.ToCommonDto(), et, find, nil
}

func (svc *CommonResourceService) Create(resource string, dtoObj dto.CommonDtoValues) (dto.CommonDtoValues, *entity.CommonResource, error) {
	if resource == consts.ResourcesName_SysUser {

	}

	et, err := findCommResourceRepo(resource).Create(dtoObj)
	if err != nil {
		return nil, et, err
	}

	// 返回新的实体，插入数据库之后会填入数据库id，所以要返给前端刷新id数据
	return et.ToCommonDto(), et, err
}

func (svc *CommonResourceService) Edit(resource string, dtoObj dto.CommonDtoValues) error {
	err := findCommResourceRepo(resource).Edit(dtoObj)
	if err != nil {
		return err
	}

	return nil
}

func (svc *CommonResourceService) Delete(resource string, id int) error {
	_, _, err := findCommResourceRepo(resource).Delete(id)
	if err != nil {
		return err
	}

	return nil
}

func (svc *CommonResourceService) GetSupportResourcesList() []*dto.ResourceInitInfo {
	list := make([]*dto.ResourceInitInfo, 0, len(commResourcesRepo))
	for _, v := range commResourcesRepo {
		list = append(list, &dto.ResourceInitInfo{
			Resource:    v.Resource,
			Desc:        v.Desc,
			ShowMethods: v.ShowMethods,
		})
	}
	return list
}

const (
	ShowMethod_Get    = 1
	ShowMethod_Post   = 1 << 1
	ShowMethod_Put    = 1 << 2
	ShowMethod_Delete = 1 << 3
)

type resourceRepoInfo struct {
	Resource    string
	Desc        string
	Repo        repo.ICommonResourceRepo
	ShowMethods []string
	showMethods int
}

var commResourcesRepo = make([]*resourceRepoInfo, 0)

func r(resource, desc string, repo repo.ICommonResourceRepo, showMethods int) {
	curRepo := &resourceRepoInfo{
		Resource: resource,
		Desc:     desc,
		Repo:     repo,
	}

	if showMethods&ShowMethod_Get == ShowMethod_Get {
		curRepo.ShowMethods = append(curRepo.ShowMethods, "get")
	}
	if showMethods&ShowMethod_Post == ShowMethod_Post {
		curRepo.ShowMethods = append(curRepo.ShowMethods, "post")
	}
	if showMethods&ShowMethod_Put == ShowMethod_Put {
		curRepo.ShowMethods = append(curRepo.ShowMethods, "put")
	}
	if showMethods&ShowMethod_Delete == ShowMethod_Delete {
		curRepo.ShowMethods = append(curRepo.ShowMethods, "delete")
	}

	commResourcesRepo = append(commResourcesRepo, curRepo)
}

func findCommResourceRepo(resource string) repo.ICommonResourceRepo {
	for _, v := range commResourcesRepo {
		if v.Resource == resource {
			return v.Repo
		}
	}
	panic(fmt.Errorf("not found Resource:%v", resource))
	return nil
}