package repository

import (
	"code.gitea.io/gitea/models"
	"code.gitea.io/gitea/modules/log"
	"code.gitea.io/gitea/modules/setting"
)

func GetPreferredRepos() ([]*models.Repository4Card, error) {
	repos, err := models.GetSelectedRepos(models.FindSelectedReposOpts{
		ListOptions: models.ListOptions{
			PageSize: 10,
			Page:     1,
		},
		OnlyPublic: true,
	})
	if err != nil {
		return nil, err
	}
	result := make([]*models.Repository4Card, len(repos))
	for i, r := range repos {
		result[i] = r.ToCardFormat()
	}
	return result, nil
}

func GetIncubationRepos() ([]*models.Repository4Card, error) {
	repos, err := models.GetSelectedRepos(models.FindSelectedReposOpts{
		ListOptions: models.ListOptions{
			PageSize: 10,
			Page:     1,
		},
		OrgId:      setting.IncubationSourceOrgId,
		OnlyPublic: true,
	})
	if err != nil {
		return nil, err
	}
	result := make([]*models.Repository4Card, len(repos))
	for i, r := range repos {
		result[i] = r.ToCardFormat()
	}
	return result, nil
}

func GetHotPaperRepos() ([]*models.Repository4Card, error) {
	rlist, _, err := models.SearchRepository(&models.SearchRepoOptions{
		ListOptions: models.ListOptions{
			Page:     1,
			PageSize: 10,
		},
		OrderBy:   models.SearchOrderByLastMonthVisitsReverse + "," + models.SearchOrderByRecentUpdated,
		TopicOnly: true,
		TopicName: "openi-paper",
		AllPublic: true,
	})
	if err != nil {
		return nil, err
	}
	result := make([]*models.Repository4Card, len(rlist))
	for i, r := range rlist {
		result[i] = r.ToCardFormat()
	}
	return result, nil
}

type FindReposOptions struct {
	models.ListOptions
	Actor   *models.User
	Sort    string
	Keyword string
	Topic   string
	Private bool
	OwnerID int64
}

func FindRepos(opts FindReposOptions) (*models.FindReposResponse, error) {

	var (
		repos   []*models.Repository
		count   int64
		err     error
		orderBy models.SearchOrderBy
	)

	switch opts.Sort {
	//1.近期热门：按最近1个月浏览量倒序排序，最近1个月浏览量>最近更新>项目名称升序
	case "most_popular":
		orderBy = models.SearchOrderByLastMonthVisitsReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//2.近期活跃：按提交增长量（最近4个月commit数）倒序排序，提交增长量>最近更新>项目名称升序。
	case "most_active":
		orderBy = models.SearchOrderByLastFourMonthCommitsReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//3.最近更新：按最近更新>项目名称升序排序。
	case "recent_update":
		orderBy = models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//4.最近创建：按项目创建时间排序，最近的排前面。最近创建>项目名称升序。
	case "newest":
		orderBy = models.SearchOrderByNewest + "," + models.SearchOrderByAlphabetically
		//5.点赞最多：按点赞数倒序排序。点赞数>最近更新>项目名称升序。
	case "most_stars":
		orderBy = models.SearchOrderByStarsReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//6.派生最多：按派生数倒序排序。派生数>最近更新>项目名称升序。
	case "most_forks":
		orderBy = models.SearchOrderByForksReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//7.数据集最多：按项目包含的数据集文件数量倒序排序，数据集文件数>最近更新>项目名称升序。
	case "most_datasets":
		orderBy = models.SearchOrderByDatasetCntReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//8.AI任务最多：按项目包含的AI任务数量倒序排序，AI任务数>最近更新>项目名称升序。
	case "most_ai_tasks":
		orderBy = models.SearchOrderByAiTaskCntReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
		//9.模型最多：按项目包含的模型数量倒序排序，模型大小为0则不统计。模型数>最近更新>项目名称升序。
	case "most_models":
		orderBy = models.SearchOrderByModelCntReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically

	default:
		orderBy = models.SearchOrderByLastMonthVisitsReverse + "," + models.SearchOrderByRecentUpdated + "," + models.SearchOrderByAlphabetically
	}

	repos, count, err = models.SearchRepository(&models.SearchRepoOptions{
		ListOptions:        opts.ListOptions,
		Actor:              opts.Actor,
		OrderBy:            orderBy,
		Private:            opts.Private,
		Keyword:            opts.Keyword,
		OwnerID:            opts.OwnerID,
		AllPublic:          true,
		AllLimited:         true,
		TopicName:          opts.Topic,
		IncludeDescription: setting.UI.SearchRepoDescription,
	})
	if err != nil {
		log.Error("FindRepos error when SearchRepository.%v", err)
		return nil, err
	}
	result := make([]*models.Repository4Card, len(repos))
	for i, r := range repos {
		result[i] = r.ToCardFormat()
	}

	return &models.FindReposResponse{
		Repos:    result,
		Total:    count,
		Page:     opts.Page,
		PageSize: opts.PageSize,
	}, nil
}