mirror of https://github.com/cloudreve/Cloudreve
87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
package middleware
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import (
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"github.com/cloudreve/Cloudreve/v4/application/dependency"
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"github.com/cloudreve/Cloudreve/v4/pkg/util"
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"github.com/gin-gonic/gin"
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"io"
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"net/http"
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"strings"
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)
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// FrontendFileHandler 前端静态文件处理
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func FrontendFileHandler(dep dependency.Dep) gin.HandlerFunc {
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fs := dep.ServerStaticFS()
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l := dep.Logger()
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ignoreFunc := func(c *gin.Context) {
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c.Next()
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}
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if fs == nil {
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return ignoreFunc
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}
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// 读取index.html
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file, err := fs.Open("/index.html")
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if err != nil {
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l.Warning("Static file \"index.html\" does not exist, it might affect the display of the homepage.")
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return ignoreFunc
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}
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fileContentBytes, err := io.ReadAll(file)
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if err != nil {
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l.Warning("Cannot read static file \"index.html\", it might affect the display of the homepage.")
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return ignoreFunc
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}
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fileContent := string(fileContentBytes)
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fileServer := http.FileServer(fs)
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return func(c *gin.Context) {
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path := c.Request.URL.Path
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// Skipping routers handled by backend
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if strings.HasPrefix(path, "/api") ||
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strings.HasPrefix(path, "/dav") ||
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strings.HasPrefix(path, "/f/") ||
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strings.HasPrefix(path, "/s/") ||
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path == "/manifest.json" {
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c.Next()
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return
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}
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// 不存在的路径和index.html均返回index.html
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if (path == "/index.html") || (path == "/") || !fs.Exists("/", path) {
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// 读取、替换站点设置
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settingClient := dep.SettingProvider()
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siteBasic := settingClient.SiteBasic(c)
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pwaOpts := settingClient.PWA(c)
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theme := settingClient.Theme(c)
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finalHTML := util.Replace(map[string]string{
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"{siteName}": siteBasic.Name,
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"{siteDes}": siteBasic.Description,
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"{siteScript}": siteBasic.Script,
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"{pwa_small_icon}": pwaOpts.SmallIcon,
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"{pwa_medium_icon}": pwaOpts.MediumIcon,
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"var(--defaultThemeColor)": theme.DefaultTheme,
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}, fileContent)
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c.Header("Content-Type", "text/html")
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c.Header("Cache-Control", "public, no-cache")
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c.String(200, finalHTML)
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c.Abort()
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return
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}
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if path == "/sw.js" || strings.HasPrefix(path, "/locales/") {
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c.Header("Cache-Control", "public, no-cache")
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} else if strings.HasPrefix(path, "/assets/") {
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c.Header("Cache-Control", "public, max-age=31536000")
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}
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// 存在的静态文件
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fileServer.ServeHTTP(c.Writer, c.Request)
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c.Abort()
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}
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}
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