// src/server/webapp/static_files_test.go
package webapp

import (
	"io"
	"io/fs"
	"net/http"
	"net/http/httptest"
	"testing"
)

// findFirstStaticFile walks the embedded FS and returns the first file path.
func findFirstStaticFile() (webPath string, content []byte, ok bool) {
	_ = fs.WalkDir(assets, "static", func(path string, d fs.DirEntry, err error) error {
		if !d.IsDir() && ok == false {
			data, _ := assets.ReadFile(path) // ignore err; test will skip if nil
			webPath = "/" + path            // e.g. /static/css/main.css
			content = data
			ok = true
		}
		return nil
	})
	return
}

// Requires at least one file under static/. Skips if none embedded.
func TestStaticFileServer(t *testing.T) {
	webPath, wantBytes, ok := findFirstStaticFile()
	if !ok {
		t.Skip("no embedded static files to test")
	}

	//-----------------------------------------------------------------
	// build router with sqlmock DB (not used in this test)
	//-----------------------------------------------------------------
	app, _ := newTestApp(t)
	ts := httptest.NewServer(BuildRouter(app))
	defer ts.Close()

	res, err := http.Get(ts.URL + webPath)
	if err != nil {
		t.Fatalf("GET %s: %v", webPath, err)
	}
	defer res.Body.Close()

	if res.StatusCode != http.StatusOK {
		t.Fatalf("status = %d; want 200", res.StatusCode)
	}

	gotBytes, _ := io.ReadAll(res.Body)
	if len(gotBytes) == 0 || string(gotBytes) != string(wantBytes) {
		t.Errorf("served file differs from embedded asset")
	}
}