// SiYuan - Refactor your thinking
// Copyright (c) 2020-present, b3log.org
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package bazaar

import (
	"strings"
	"time"

	"github.com/88250/go-humanize"
	"github.com/araddon/dateparse"
	"github.com/siyuan-note/siyuan/kernel/util"
)

// GetBazaarPackages 返回指定类型的在线集市包列表（plugins 类型需要传递 frontend 参数）。
func GetBazaarPackages(pkgType string, frontend string) (packages []*Package) {
	result := getStageAndBazaar(pkgType)

	if !result.Online || nil != result.StageErr || nil == result.StageIndex {
		return make([]*Package, 0)
	}

	packages = make([]*Package, 0, len(result.StageIndex.Repos))
	for _, repo := range result.StageIndex.Repos {
		pkg := buildBazaarPackageWithMetadata(repo, result.BazaarIndex, pkgType, frontend)
		if nil == pkg {
			continue
		}
		packages = append(packages, pkg)
	}
	return
}

// buildBazaarPackageWithMetadata 从 StageRepo 构建带有在线元数据的集市包。
func buildBazaarPackageWithMetadata(repo *StageRepo, bazaarIndex map[string]*bazaarPackage, pkgType string, frontend string) *Package {
	if nil == repo || nil == repo.Package {
		return nil
	}

	pkg := *repo.Package
	pkg.URL = strings.TrimSuffix(pkg.URL, "/")
	repoURLHash := strings.Split(repo.URL, "@")
	if 2 != len(repoURLHash) {
		return nil
	}
	pkg.RepoURL = "https://github.com/" + repoURLHash[0]
	pkg.RepoHash = repoURLHash[1]

	// 展示信息
	pkg.IconURL = util.BazaarOSSServer + "/package/" + repo.URL + "/icon.png"
	pkg.PreviewURL = util.BazaarOSSServer + "/package/" + repo.URL + "/preview.png?imageslim"
	pkg.PreferredName = GetPreferredLocaleString(pkg.DisplayName, pkg.Name)
	pkg.PreferredDesc = GetPreferredLocaleString(pkg.Description, "")
	pkg.PreferredFunding = getPreferredFunding(pkg.Funding)

	// 更新信息
	disallow := isBelowRequiredAppVersion(&pkg)
	pkg.DisallowInstall = disallow
	pkg.DisallowUpdate = disallow
	pkg.UpdateRequiredMinAppVer = pkg.MinAppVersion
	if "plugins" == pkgType {
		incompatible := IsIncompatiblePlugin(&pkg, frontend)
		pkg.Incompatible = &incompatible
	}

	// 统计信息
	pkg.Updated = repo.Updated
	pkg.HUpdated = formatUpdated(pkg.Updated)
	pkg.Stars = repo.Stars
	pkg.OpenIssues = repo.OpenIssues
	pkg.Size = repo.Size
	pkg.HSize = humanize.BytesCustomCeil(uint64(pkg.Size), 2)
	pkg.InstallSize = repo.InstallSize
	pkg.HInstallSize = humanize.BytesCustomCeil(uint64(pkg.InstallSize), 2)
	if bp := bazaarIndex[repoURLHash[0]]; nil != bp {
		pkg.Downloads = bp.Downloads
	}
	packageInstallSizeCache.SetDefault(pkg.RepoURL, pkg.InstallSize)
	return &pkg
}

// formatUpdated 格式化发布日期字符串。
func formatUpdated(updated string) (ret string) {
	t, e := dateparse.ParseIn(updated, time.Now().Location())
	if nil == e {
		ret = t.Format("2006-01-02")
	} else {
		if strings.Contains(updated, "T") {
			ret = updated[:strings.Index(updated, "T")]
		} else {
			ret = strings.ReplaceAll(strings.ReplaceAll(updated, "T", ""), "Z", "")
		}
	}
	return
}