package web

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"testing/fstest"

	"khosra/internal/content"
	"khosra/internal/render"
)

// unpublishedFS holds a draft, a future-dated bundle and a live one, each a directory bundle with a file.
func unpublishedFS() fstest.MapFS {
	return fstest.MapFS{
		"content/art/draft/index.md":  {Data: []byte("---\ntitle: Draft\ndraft: true\n---\nx\n")},
		"content/art/draft/one.jpg":   {Data: []byte("secret bytes")},
		"content/art/future/index.md": {Data: []byte("---\ntitle: Future\ndate: 2099-01-01\n---\nx\n")},
		"content/art/future/two.jpg":  {Data: []byte("not yet")},
		"content/art/live/index.md":   {Data: []byte("---\ntitle: Live\ndate: 2020-01-01\n---\nx\n")},
		"content/art/live/three.jpg":  {Data: []byte("fine")},
	}
}

func TestNothingInsideAnUnpublishedBundleIsServed(t *testing.T) {
	// ADR-0024: an unpublished bundle answers 404 for itself *and* for every file inside it, since 403 would
	// confirm the work exists. The guard is the bundle lookup — which is why the asset route asks for the
	// bundle before reading any bytes, and why this needed no second filter.
	fsys := unpublishedFS()
	bundles, err := content.Scan(fsys)
	if err != nil {
		t.Fatal(err)
	}
	r, err := render.New(nil, content.Settings{}, nil)
	if err != nil {
		t.Fatal(err)
	}
	hidden := Handler(Fixed(content.NewSite(bundles)), r, fsys, nil, content.Settings{})
	for path, want := range map[string]int{
		"/art/draft/":         http.StatusNotFound,
		"/art/draft/one.jpg":  http.StatusNotFound,
		"/art/future/":        http.StatusNotFound,
		"/art/future/two.jpg": http.StatusNotFound,
		"/art/live/":          http.StatusOK,
		"/art/live/three.jpg": http.StatusOK,
	} {
		rec := httptest.NewRecorder()
		hidden.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, path, nil))
		if rec.Code != want {
			t.Errorf("GET %s = %d, want %d", path, rec.Code, want)
		}
		if body := rec.Body.String(); strings.Contains(body, "secret bytes") || strings.Contains(body, "not yet") {
			t.Fatalf("GET %s served bytes from an unpublished bundle", path)
		}
	}

	// Revealing them is the only thing that changes the answer.
	site := content.NewSite(bundles)
	site.Reveal()
	shown := Handler(Fixed(site), r, fsys, nil, content.Settings{})
	for _, path := range []string{"/art/draft/", "/art/draft/one.jpg", "/art/future/", "/art/future/two.jpg"} {
		rec := httptest.NewRecorder()
		shown.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, path, nil))
		if rec.Code != http.StatusOK {
			t.Errorf("dev mode: GET %s = %d, want 200", path, rec.Code)
		}
	}
}

func TestUnpublishedBundlesAreAbsentFromEverythingThatLists(t *testing.T) {
	// A listing, a feed and a sitemap all go through the same Query, so hiding a draft in one place hides it
	// everywhere. That is the property worth testing rather than each surface separately.
	fsys := unpublishedFS()
	fsys["content/art/live/index.md"] = &fstest.MapFile{Data: []byte("---\ntitle: Live\ndate: 2020-01-01\n---\nx\n")}
	bundles, err := content.Scan(fsys)
	if err != nil {
		t.Fatal(err)
	}
	settings := content.Settings{Base: "https://khosra.example", Title: "Khosra"}
	r, err := render.New(nil, settings, nil)
	if err != nil {
		t.Fatal(err)
	}
	h := Handler(Fixed(content.NewSite(bundles)), r, fsys, nil, settings)
	for _, path := range []string{"/art/", "/feed.xml", "/sitemap.xml"} {
		rec := httptest.NewRecorder()
		h.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, path, nil))
		body := rec.Body.String()
		if !strings.Contains(body, "live") && !strings.Contains(body, "Live") {
			t.Errorf("GET %s lost the published bundle:\n%s", path, body)
		}
		for _, hidden := range []string{"draft", "future"} {
			if strings.Contains(body, hidden) {
				t.Errorf("GET %s leaked the %s bundle:\n%s", path, hidden, body)
			}
		}
	}
}