engigu
103 lines
3.1 KiB
Go
103 lines
3.1 KiB
Go
package router
|
|
|
|
import (
|
|
"io/fs"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/engigu/baihu-panel/internal/static"
|
|
|
|
"github.com/gin-gonic/gin"
|
|
)
|
|
|
|
func mustSubFS(fsys fs.FS, dir string) fs.FS {
|
|
sub, err := fs.Sub(fsys, dir)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return sub
|
|
}
|
|
|
|
// cacheControl 返回设置 Cache-Control header 的中间件
|
|
func cacheControl(value string) gin.HandlerFunc {
|
|
return func(c *gin.Context) {
|
|
c.Header("Cache-Control", value)
|
|
c.Next()
|
|
}
|
|
}
|
|
|
|
func initStaticRoutes(root *gin.RouterGroup) {
|
|
staticFS := static.GetFS()
|
|
if staticFS == nil {
|
|
return
|
|
}
|
|
|
|
// 静态资源服务（Vue SPA），带缓存头部
|
|
assetsGroup := root.Group("/assets")
|
|
assetsGroup.Use(cacheControl("public, max-age=31536000, immutable")) // 带哈希的资源缓存
|
|
assetsGroup.StaticFS("/", http.FS(mustSubFS(staticFS, "assets")))
|
|
|
|
// Monaco Editor (vs) 静态资源
|
|
vsGroup := root.Group("/vs")
|
|
vsGroup.Use(cacheControl("public, max-age=31536000, immutable"))
|
|
vsGroup.StaticFS("/", http.FS(mustSubFS(staticFS, "vs")))
|
|
|
|
// logo.svg 短缓存实现
|
|
root.GET("/logo.svg", func(ctx *gin.Context) {
|
|
data, err := static.ReadFile("logo.svg")
|
|
if err != nil {
|
|
ctx.Status(404)
|
|
return
|
|
}
|
|
ctx.Header("Cache-Control", "public, max-age=86400") // 缓存1天
|
|
ctx.Data(200, "image/svg+xml", data)
|
|
})
|
|
}
|
|
|
|
// serveSPA 注入配置并返回 index.html 给前端渲染
|
|
func serveSPA(ctx *gin.Context, urlPrefix string, status int) {
|
|
data, err := static.ReadFile("index.html")
|
|
if err != nil {
|
|
// 如果读不到 index.html (如 dev 模式未 build)，返回基础 HTML
|
|
// 如果已经是 /404 路径，则不再重定向以免死循环
|
|
path := ctx.Request.URL.Path
|
|
if strings.HasSuffix(path, "/404") {
|
|
ctx.Data(status, "text/html; charset=utf-8", []byte("<!DOCTYPE html><html><body><h1>404 Not Found</h1><p>Frontend assets not found. Please run 'npm run build' or check dev server.</p><a href='/'>Go Home</a></body></html>"))
|
|
ctx.Abort()
|
|
return
|
|
}
|
|
|
|
fallback := `<!DOCTYPE html><html><head><meta charset="utf-8"/><title>404 Not Found</title></head><body>
|
|
<script>
|
|
const baseUrl = window.__BASE_URL__ || "/";
|
|
if (!window.location.pathname.endsWith("/404")) {
|
|
window.location.href = baseUrl + (baseUrl.endsWith("/") ? "" : "/") + "404";
|
|
}
|
|
</script>
|
|
<p>Not Found. Redirecting...</p>
|
|
</body></html>`
|
|
ctx.Header("Content-Type", "text/html; charset=utf-8")
|
|
ctx.Data(status, "text/html", []byte(fallback))
|
|
ctx.Abort()
|
|
return
|
|
}
|
|
|
|
html := string(data)
|
|
|
|
// 注入配置变量供前端使用（API 调用和路由）
|
|
baseHref := urlPrefix + "/"
|
|
if urlPrefix == "" {
|
|
baseHref = "/"
|
|
}
|
|
|
|
// 注入 base tag 为了让深度路由的相对路径资源加载正常
|
|
html = strings.Replace(html, "<head>", "<head>\n <base href=\""+baseHref+"\">", 1)
|
|
|
|
configScript := `<script>window.__BASE_URL__ = "` + urlPrefix + `"; window.__API_VERSION__ = "/api/v1";</script>`
|
|
html = strings.Replace(html, "</head>", configScript+"</head>", 1)
|
|
|
|
ctx.Header("Cache-Control", "no-cache, no-store, must-revalidate")
|
|
ctx.Data(status, "text/html; charset=utf-8", []byte(html))
|
|
ctx.Abort()
|
|
}
|