alexei.dolgolyov
4d4e07eb2e
- Use all: prefix in go:embed to include _app/ directory (Go skips _-prefixed dirs by default) - Move jsonContentType middleware to /api route group only - Use http.ServeContent for proper MIME type detection - Remove unused fileServer variable
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
package api
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import (
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"io"
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"io/fs"
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"net/http"
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"strings"
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)
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// StaticHandler serves embedded SPA files with fallback to index.html
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// for all non-API routes (SPA client-side routing support).
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func StaticHandler(webFS fs.FS) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Skip API routes — they are handled by the API router.
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if strings.HasPrefix(r.URL.Path, "/api") {
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http.NotFound(w, r)
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return
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}
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// Try to serve the exact file from the embedded FS.
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path := strings.TrimPrefix(r.URL.Path, "/")
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if path == "" {
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path = "index.html"
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}
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// Check if file exists in the embedded FS.
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if f, err := webFS.Open(path); err == nil {
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stat, statErr := f.Stat()
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f.Close()
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if statErr == nil && !stat.IsDir() {
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// Serve the actual file. Use http.ServeContent for correct MIME detection.
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file, _ := webFS.Open(path)
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defer file.Close()
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http.ServeContent(w, r, stat.Name(), stat.ModTime(), file.(io.ReadSeeker))
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return
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}
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}
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// File not found: serve index.html for SPA client-side routing.
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indexFile, _ := webFS.Open("index.html")
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if indexFile != nil {
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defer indexFile.Close()
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stat, _ := indexFile.Stat()
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http.ServeContent(w, r, "index.html", stat.ModTime(), indexFile.(io.ReadSeeker))
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}
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})
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}
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