40 lines
1.2 KiB
Go
40 lines
1.2 KiB
Go
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// Package api serves the FlowSight REST API (docs/API.md) on chi.
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package api
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import (
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"net/http"
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"os"
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"path/filepath"
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"strings"
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)
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// spaHandler serves the prebuilt web dist (WEB_DIST_DIR) with an SPA fallback:
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// existing files (assets, index.html) are served directly, unknown paths fall
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// back to index.html so client-side routes (/routines, /report/:ticker, ...)
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// resolve. Only registered when StaticDir is set; API-only mode otherwise.
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func (s *Server) spaHandler() http.HandlerFunc {
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root := s.Cfg.StaticDir
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fileSrv := http.FileServer(http.Dir(root))
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index := filepath.Join(root, "index.html")
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return func(w http.ResponseWriter, r *http.Request) {
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if strings.HasPrefix(r.URL.Path, "/api/") || r.URL.Path == "/api" {
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writeErr(w, http.StatusNotFound, "not found")
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return
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}
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if r.URL.Path == "/" || r.URL.Path == "/index.html" {
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http.ServeFile(w, r, index)
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return
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}
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clean := filepath.Clean(strings.TrimPrefix(r.URL.Path, "/"))
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if strings.Contains(clean, "..") {
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http.NotFound(w, r)
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return
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}
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if fi, err := os.Stat(filepath.Join(root, clean)); err == nil && !fi.IsDir() {
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fileSrv.ServeHTTP(w, r)
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return
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}
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http.ServeFile(w, r, index)
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}
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}
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