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package bootstrap
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import (
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"encoding/json"
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"io"
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"io/ioutil"
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"net/http"
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"path"
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"github.com/cloudreve/Cloudreve/v3/pkg/conf"
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"github.com/cloudreve/Cloudreve/v3/pkg/util"
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"github.com/gin-contrib/static"
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"github.com/rakyll/statik/fs"
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)
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const StaticFolder = "statics"
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type GinFS struct {
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FS http.FileSystem
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}
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type staticVersion struct {
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Name string `json:"name"`
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Version string `json:"version"`
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}
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// StaticFS 内置静态文件资源
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var StaticFS static.ServeFileSystem
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// Open 打开文件
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func (b *GinFS) Open(name string) (http.File, error) {
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return b.FS.Open(name)
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}
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// Exists 文件是否存在
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func (b *GinFS) Exists(prefix string, filepath string) bool {
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if _, err := b.FS.Open(filepath); err != nil {
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return false
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}
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return true
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}
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// InitStatic 初始化静态资源文件
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func InitStatic() {
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var err error
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if util.Exists(util.RelativePath(StaticFolder)) {
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util.Log().Info("检测到 statics 目录存在,将使用此目录下的静态资源文件")
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StaticFS = static.LocalFile(util.RelativePath("statics"), false)
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// 检查静态资源的版本
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f, err := StaticFS.Open("version.json")
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if err != nil {
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util.Log().Warning("静态资源版本标识文件不存在,请重新构建或删除 statics 目录")
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return
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}
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b, err := ioutil.ReadAll(f)
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if err != nil {
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util.Log().Warning("无法读取静态资源文件版本,请重新构建或删除 statics 目录")
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return
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}
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var v staticVersion
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if err := json.Unmarshal(b, &v); err != nil {
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util.Log().Warning("无法解析静态资源文件版本, %s", err)
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return
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}
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staticName := "cloudreve-frontend"
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if conf.IsPro == "true" {
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staticName += "-pro"
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}
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if v.Name != staticName {
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util.Log().Warning("静态资源版本不匹配,请重新构建或删除 statics 目录")
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return
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}
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if v.Version != conf.RequiredStaticVersion {
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util.Log().Warning("静态资源版本不匹配 [当前 %s, 需要: %s],请重新构建或删除 statics 目录", v.Version, conf.RequiredStaticVersion)
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return
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}
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} else {
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StaticFS = &GinFS{}
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StaticFS.(*GinFS).FS, err = fs.New()
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if err != nil {
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util.Log().Panic("无法初始化静态资源, %s", err)
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}
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}
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}
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// Eject 抽离内置静态资源
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func Eject() {
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staticFS, err := fs.New()
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if err != nil {
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util.Log().Panic("无法初始化静态资源, %s", err)
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}
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root, err := staticFS.Open("/")
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if err != nil {
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util.Log().Panic("根目录不存在, %s", err)
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}
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var walk func(relPath string, object http.File)
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walk = func(relPath string, object http.File) {
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stat, err := object.Stat()
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if err != nil {
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util.Log().Error("无法获取[%s]的信息, %s, 跳过...", relPath, err)
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return
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}
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if !stat.IsDir() {
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// 写入文件
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out, err := util.CreatNestedFile(util.RelativePath(StaticFolder + relPath))
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defer out.Close()
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if err != nil {
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util.Log().Error("无法创建文件[%s], %s, 跳过...", relPath, err)
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return
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}
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util.Log().Info("导出 [%s]...", relPath)
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if _, err := io.Copy(out, object); err != nil {
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util.Log().Error("无法写入文件[%s], %s, 跳过...", relPath, err)
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return
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}
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} else {
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// 列出目录
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objects, err := object.Readdir(0)
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if err != nil {
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util.Log().Error("无法步入子目录[%s], %s, 跳过...", relPath, err)
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return
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}
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// 递归遍历子目录
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for _, newObject := range objects {
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newPath := path.Join(relPath, newObject.Name())
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newRoot, err := staticFS.Open(newPath)
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if err != nil {
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util.Log().Error("无法打开对象[%s], %s, 跳过...", newPath, err)
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continue
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}
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walk(newPath, newRoot)
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}
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}
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}
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util.Log().Info("开始导出内置静态资源...")
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walk("/", root)
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util.Log().Info("内置静态资源导出完成")
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}
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