package ui

import (
	"fmt"
	"testing"

	"github.com/gorilla/mux"
)

/* Not a Test function, a test helper.

AssetsPath is "public" instead of "web/public" because tests normally run from the
package directory, not the project directory.
*/
func testSetupGlobals() {
	globals = Globals{
		AssetsBaseURL: "https://cdn.osinet.fr",
		AssetsVersion: 1,
		AssetsPath:    "public",
		SiteBaseURL:   "http://sut.kurz.osinet.fr",
		RefreshDelay:  1,
		SiteName:      "Kurz test site",
	}
}

func TestURLForAsset(t *testing.T) {
	testSetupGlobals()
	type check struct {
		Expected string
		Name     string
		NS       string
		OK       bool
		Path     string
	}
	checks := []check{
		{"https://cdn.osinet.fr/favicon.ico?v=1", "empty favicon", "", true, "favicon.ico"},
		{"https://cdn.osinet.fr/favicon.ico?v=1", "root favicon", "/", false, "favicon.ico"},
		{"https://cdn.osinet.fr/css?v=1", "empty css path", "css", true, ""},
		{"https://cdn.osinet.fr/css?v=1", "root css path", "css", true, "/"},
	}
	for _, check := range checks {
		t.Run(check.Name, func(t *testing.T) {
			actual, err := URLForAsset(check.NS, check.Path)
			if !check.OK {
				if err == nil {
					t.Errorf("Should have failed for: %s  %s but did not\n", check.NS, check.Path)
					t.FailNow()
				}
				return
			}

			if check.OK && err != nil {
				t.Errorf("Error building asset Expected: %v\n", err)
				t.FailNow()
			} else if actual != check.Expected || err != nil {
				t.Errorf("Incorrect asset expecting <%s>, got <%s>\n", check.Expected, actual)
				t.Fail()
			}
		})
	}
}

func TestURLForAssetSad(t *testing.T) {
	testSetupGlobals()
	globals.AssetsBaseURL = ":::"

	defer func() {
		if r := recover(); r == nil {
			fmt.Println("Invalid AssetsBaseURL did not cause asset URL generation to fail")
		}
	}()
	URLForAsset("", "")
}

func TestURLFromRoute(t *testing.T) {
	testSetupGlobals()
	router := mux.NewRouter()
	SetupUI(router, globals.AssetsPath)

	type strings map[string]string
	type check struct {
		Expected string
		OK       bool
		Params   strings
		Route    string
	}
	checks := []check{
		{globals.SiteBaseURL + "/", true, nil, RouteGetRoot},
		{globals.SiteBaseURL + "/foo", true, strings{"short": "foo"}, RouteGetShort},
		{"", false, nil, "NoSuchRoute"},
		{"", false, nil, RouteGetShort},
	}

	for _, check := range checks {
		actual, err := URLFromRoute(router, check.Route, check.Params)
		if check.OK && err != nil {
			t.Errorf("Error building route %s: %v\n", check.Route, err)
			t.FailNow()
		} else if actual != check.Expected {
			t.Errorf("Route %s failure. Expected %s, got %s\n", RouteGetRoot, check.Expected, actual)
			t.Fail()
		}
	}
}