catface_backend_go/app/service/encounter/curd/encounter_curd.go

package curd

import (
	"catface/app/model"
	"catface/app/utils/query_handler"
	"strconv"
)

func CreateEncounterCurdFactory() *EncounterCurd {
	return &EncounterCurd{model.CreateEncounterFactory("")}
}

type EncounterCurd struct {
	encounter *model.Encounter
}

func (e *EncounterCurd) List(num, skip, user_id int, mode string) (result []model.EncounterList) {
	if num == 0 {
		num = 10
	}

	var likedAnimalIds []int
	switch mode {
	case "liked":
		likedAnimalIds = model.CreateAnimalLikeFactory("").LikedCats(user_id)
	}
	result = model.CreateEncounterFactory("").Show(num, skip, user_id, likedAnimalIds)
	return
}

func (e *EncounterCurd) Detail(id string) *model.EncounterDetail {
	// 0. check id
	idInt, err := strconv.Atoi(id)
	if err != nil {
		return nil
	}

	// 1. encounter data
	encounter, err := model.CreateEncounterFactory("").ShowByID(int64(idInt))
	if err != nil {
		return nil
	}

	// 1.1 处理 Photos 为 []string，同时忽略原本的 Photos 字段。
	encounter.PhotosList = query_handler.StringToStringArray(encounter.Photos)
	encounter.Photos = "" // 清空。

	// 2. user data
	user, err := model.CreateUserFactory("").ShowByID(encounter.UsersModelId, "user_avatar", "user_name", "id")
	if err != nil {
		return nil
	}

	// 3. animals data
	var animals []model.Animal
	if animals_id, ok := model.CreateEncounterAnimalLinkFactory("").ShowByEncounterId(encounter.Id); ok {
		animals = model.CreateAnimalFactory("").ShowByIDs(animals_id, "avatar", "name", "id")
	}

	// 4. 合并
	return &model.EncounterDetail{
		Encounter:  *encounter,
		UsersModel: *user,
		Animals:    animals,
	}
}