package server_test

import (
	"net/http"
	"regexp"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"sneak.berlin/go/webhooker/templates"
)

// TestBaseTemplateScriptsAreServed walks every /s/ script the base
// template loads on each page and fetches it through the real router.
// Alpine.js is fetched at build time rather than committed, so nothing
// in the repo guarantees it is present: this is the check that the page
// still gets the JavaScript it asks for.
func TestBaseTemplateScriptsAreServed(t *testing.T) {
	t.Parallel()

	// scriptSrc matches the src of every <script> tag pointing at the
	// /s/ static mount.
	scriptSrc := regexp.MustCompile(`<script[^>]+src="(/s/[^"]+)"`)

	base, err := templates.Templates.ReadFile("base.html")
	require.NoError(t, err)

	matches := scriptSrc.FindAllStringSubmatch(string(base), -1)
	require.NotEmpty(t, matches, "base.html should load scripts from /s/")

	env := newTestEnv(t)

	for _, m := range matches {
		src := m[1]
		t.Run(src, func(t *testing.T) {
			t.Parallel()

			w := env.get(src, nil)

			require.Equalf(
				t, http.StatusOK, w.Code,
				"base.html loads %s but the server does not serve it", src,
			)
			assert.NotEmptyf(
				t, w.Body.Bytes(), "%s is served but empty", src,
			)
		})
	}
}