78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
package embed_static
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import (
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"embed"
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"io/fs"
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"net/http"
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"regexp"
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"strings"
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"github.com/gin-gonic/gin"
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)
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//go:embed static/*
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var staticFS embed.FS
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var (
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spaTitleRe = regexp.MustCompile(`(?s)<title>.*?</title>`)
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spaBrandTitleFn func() string
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spaBrandJSONFn func() []byte // 站点品牌 JSON，注入 window.__J13_BRANDING__
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)
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// SetSPADocumentTitle 注册站点标题提供者，ServeSPA 会注入到入口 HTML，避免刷新闪烁
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func SetSPADocumentTitle(fn func() string) {
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spaBrandTitleFn = fn
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}
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// SetSPABrandingJSON 注册品牌 JSON 提供者（须为合法 JSON 对象），供前端首屏同步读入
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func SetSPABrandingJSON(fn func() []byte) {
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spaBrandJSONFn = fn
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}
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// SetupEmbed 配置内嵌资源：React SPA 静态资源
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func SetupEmbed(r *gin.Engine) error {
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if sub, err := fs.Sub(staticFS, "static/spa/assets"); err == nil {
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fileServer := http.StripPrefix("/assets", http.FileServer(http.FS(sub)))
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r.GET("/assets/*filepath", func(c *gin.Context) {
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// hashed 资源可长期缓存；发版后文件名变更，旧 URL 自然 404
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c.Header("Cache-Control", "public, max-age=31536000, immutable")
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fileServer.ServeHTTP(c.Writer, c.Request)
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})
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}
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return nil
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}
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// ServeSPA 返回 React SPA 入口（仅注入站点默认标题）
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func ServeSPA(c *gin.Context) {
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ServeSPAWithMeta(c, nil)
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}
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// ServeSPANoIndex 返回带 noindex 的 SPA（登录/后台等私密页）
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func ServeSPANoIndex(c *gin.Context) {
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title := ""
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if spaBrandTitleFn != nil {
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title = strings.TrimSpace(spaBrandTitleFn())
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}
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ServeSPAWithMeta(c, &SPAPageMeta{
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Title: title,
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Robots: "noindex,nofollow",
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})
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}
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// IsSPARoute 判断是否应由 SPA 处理
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func IsSPARoute(path string) bool {
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if path == "/robots.txt" || path == "/sitemap.xml" {
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return false
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}
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if strings.HasPrefix(path, "/api") ||
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strings.HasPrefix(path, "/admin") ||
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strings.HasPrefix(path, "/uploads") ||
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strings.HasPrefix(path, "/media") ||
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strings.HasPrefix(path, "/assets") ||
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strings.HasPrefix(path, "/oauth") ||
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strings.HasPrefix(path, "/.well-known") {
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return false
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}
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return true
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}
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