package logic

import (
	"context"

	"lone-services/pkg/modelbase"
	"lone-services/pkg/utils"
	"lone-services/pkg/validate"
	ad "lone-services/rpc/ad/pb"
	"lone-services/services/ad/internal/dao"
	"lone-services/services/ad/internal/model"
	"lone-services/services/ad/internal/svc"
	"lone-services/services/ad/validator"

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

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

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

func (l *ItemsLogic) Items(in *ad.ItemsReq) (*ad.Response, error) {
	var req validator.AdItemsValidator
	if msg := validate.ValidateFromProto(in, &req); msg != utils.StringEmpty {
		return outResponse(utils.ErrorParams, msg), nil
	}

	page := int(req.Page)
	size := int(req.PageSize)
	if page < modelbase.DefaultPage {
		page = modelbase.DefaultPage
	}
	if size < modelbase.DefaultPage {
		size = modelbase.DefaultSize
	}

	w := modelbase.Params{
		Page:  page,
		Size:  size,
		Order: "id desc",
	}

	var info []dao.AdInfo
	result, err := model.AdModel{}.Init().Page(w, &info)
	if err != nil {
		l.Errorf("ad items: %v", err)
		return failResponse(utils.Fail), nil
	}

	items := make([]*ad.Item, 0, len(info))
	for _, row := range info {
		items = append(items, toAdItem(row))
	}

	return okResponse(&ad.ItemsData{
		Count: result.Count,
		Items: items,
	}), nil
}