80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
package web
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import (
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"embed"
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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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"github.com/gin-gonic/gin"
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)
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//go:embed dist/*
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var frontendFS embed.FS
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// ServeEmbeddedFrontend returns a Gin handler that serves embedded frontend assets
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// and handles SPA routing by falling back to index.html for non-API routes.
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func ServeEmbeddedFrontend() gin.HandlerFunc {
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distFS, err := fs.Sub(frontendFS, "dist")
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if err != nil {
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panic("failed to get dist subdirectory: " + err.Error())
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}
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fileServer := http.FileServer(http.FS(distFS))
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return func(c *gin.Context) {
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path := c.Request.URL.Path
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// Skip API and gateway routes
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if strings.HasPrefix(path, "/api/") ||
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strings.HasPrefix(path, "/v1/") ||
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strings.HasPrefix(path, "/setup/") ||
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path == "/health" {
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c.Next()
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return
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}
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// Try to serve static file
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cleanPath := strings.TrimPrefix(path, "/")
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if cleanPath == "" {
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cleanPath = "index.html"
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}
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if file, err := distFS.Open(cleanPath); err == nil {
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file.Close()
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fileServer.ServeHTTP(c.Writer, c.Request)
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c.Abort()
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return
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}
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// SPA fallback: serve index.html for all other routes
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serveIndexHTML(c, distFS)
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}
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}
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func serveIndexHTML(c *gin.Context, fsys fs.FS) {
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file, err := fsys.Open("index.html")
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if err != nil {
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c.String(http.StatusNotFound, "Frontend not found")
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c.Abort()
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return
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}
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defer file.Close()
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content, err := io.ReadAll(file)
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if err != nil {
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c.String(http.StatusInternalServerError, "Failed to read index.html")
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c.Abort()
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return
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}
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c.Data(http.StatusOK, "text/html; charset=utf-8", content)
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c.Abort()
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}
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// HasEmbeddedFrontend checks if frontend assets are embedded
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func HasEmbeddedFrontend() bool {
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_, err := frontendFS.ReadFile("dist/index.html")
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return err == nil
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}
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