package logic

import (
	"encoding/json"
	"errors"
	"fmt"
	"fusenapi/model/gmodel"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"gorm.io/gorm"
	"strings"

	"context"

	"fusenapi/server/product/internal/svc"
	"fusenapi/server/product/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetTemplateByPidLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetTemplateByPidLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetTemplateByPidLogic {
	return &GetTemplateByPidLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetTemplateByPidLogic) GetTemplateByPid(req *types.GetTemplateByPidReq, userinfo *auth.UserInfo) (resp *basic.Response) {
	req.Pid = strings.Trim(req.Pid, " ")
	if req.Pid == "" {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "err param:pid is empty")
	}
	if req.ProductTemplateTagId <= 0 {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "err param:product_template_tag_id")
	}

	//获取产品信息(只获取id)
	productInfo, err := l.svcCtx.AllModels.FsProduct.FindOneBySn(l.ctx, req.Pid, "id")
	if err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return resp.SetStatusWithMessage(basic.CodeDbRecordNotFoundErr, "the product is not exists")
		}
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get product info")
	}
	//获取该产品该模板标签下的模板列表(只获取id)
	templateList, err := l.svcCtx.AllModels.FsProductTemplateV2.
		GetListByProductAndTemplateTag(l.ctx, fmt.Sprintf("%d", req.ProductTemplateTagId), productInfo.Id, "id")
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get templates")
	}
	if len(templateList) == 0 {
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "templates are not exists")
	}
	templateIds := make([]int64, 0, len(templateList))
	for _, v := range templateList {
		templateIds = append(templateIds, v.Id)
	}
	var (
		templateInfo *gmodel.FsProductTemplateV2
	)
	//传了指定物料,则获取该物料的第一个模板
	if req.ProductSizeId > 0 {
		templateInfo, err = l.svcCtx.AllModels.FsProductTemplateV2.GetSizeLatestTemplate(l.ctx, templateIds, productInfo.Id)
	} else { //没有指定物料则获取第一个物料的第一个模板
		templateInfo, err = l.svcCtx.AllModels.FsProductTemplateV2.GetProductLatestTemplate(l.ctx, templateIds, productInfo.Id)
	}
	if err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return resp.SetStatusWithMessage(basic.CodeDbRecordNotFoundErr, "template info not found")
		}
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get template info")
	}
	if templateInfo.TemplateInfo == nil || *templateInfo.TemplateInfo == "" {
		return resp.SetStatusWithMessage(basic.CodeJsonErr, "template info is not set")
	}
	var info interface{}
	if err = json.Unmarshal([]byte(*templateInfo.TemplateInfo), &info); err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeJsonErr, "failed to parse json product template info:", templateInfo.Id)
	}
	return resp.SetStatusWithMessage(basic.CodeOK, "success", types.GetTemplateByPidRsp{
		TemplateId:   templateInfo.Id,
		TemplateInfo: info,
	})
}