package view

import (
	"fmt"
	"io/ioutil"
	"local/dndex/config"
	"local/dndex/storage"
	"net/http"
	"net/http/httptest"
	"os"
	"path"
	"strings"
	"testing"
)

func TestFiles(t *testing.T) {
	os.Args = os.Args[:1]
	f, err := ioutil.TempFile(os.TempDir(), "pattern*")
	if err != nil {
		t.Fatal(err)
	}
	f.Close()
	defer os.Remove(f.Name())
	os.Setenv("DBURI", f.Name())

	d, err := ioutil.TempDir(os.TempDir(), "pattern*")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(d)
	os.Setenv("FILEROOT", d)

	t.Logf("config: %+v", config.New())
	handler := jsonHandler(storage.Graph{})

	t.Run("get fake file 404", func(t *testing.T) {
		r := httptest.NewRequest(http.MethodGet, fmt.Sprintf("%s/fake", config.New().FilePrefix), nil)
		w := httptest.NewRecorder()
		handler.ServeHTTP(w, r)
		if w.Code != http.StatusNotFound {
			t.Fatalf("%d: %s", w.Code, w.Body.Bytes())
		}
	})

	t.Run("get typed files", func(t *testing.T) {
		cases := map[string]string{
			"txt":  "text/plain",
			"jpeg": "image/jpeg",
			"jpg":  "image/jpeg",
			"gif":  "image/gif",
			"mkv":  "video/x-matroska",
		}
		for ext, ct := range cases {
			for _, extC := range []string{strings.ToLower(ext), strings.ToUpper(ext)} {
				f, err := ioutil.TempFile(d, "*."+extC)
				t.Logf("tempFile(%q, *.%s) = %q", d, extC, f.Name())
				if err != nil {
					t.Fatal(err)
				}
				f.Write([]byte("hello, world"))
				f.Close()
				r := httptest.NewRequest(http.MethodGet, path.Join(config.New().FilePrefix, path.Base(f.Name())), nil)
				w := httptest.NewRecorder()
				t.Logf("URL = %q", r.URL.String())
				handler.ServeHTTP(w, r)
				if w.Code != http.StatusOK {
					t.Fatalf("%d: %s", w.Code, w.Body.Bytes())
				}
				if contentType, ok := w.Header()["Content-Type"]; !ok {
					t.Fatal(w.Header())
				} else if len(contentType) < 1 || !strings.HasPrefix(contentType[0], ct) {
					t.Fatal(contentType, ", want:", ct)
				}
				t.Logf("%+v", w)
			}
		}
	})
}