package classes_test

import (
	"encoding/json"
	"strings"
	"testing"

	"git.golem15.com/golem15/sm-sitemap-plugin/classes"
)

// TestURLTo runs every case of testdata/urlto.json through URLTo and
// compares it with the line PHP's Url::to wrote to urlto.golden (SC-3), then
// pins the helpers built on it: BackendURL and URLPath.
func TestURLTo(t *testing.T) {
	var in struct {
		Root string    `json:"root"`
		URLs []*string `json:"urls"`
	}
	if err := json.Unmarshal(readTestdata(t, "urlto.json"), &in); err != nil {
		t.Fatal(err)
	}
	want := strings.Split(strings.TrimSuffix(string(readTestdata(t, "urlto.golden")), "\n"), "\n")
	if len(in.URLs) < 50 || len(want) != len(in.URLs) {
		t.Fatalf("%d inputs, %d golden lines", len(in.URLs), len(want))
	}
	for i, u := range in.URLs {
		path := "<null>"
		input := ""
		if u != nil {
			path, input = *u, *u
		}
		if got := classes.URLTo(in.Root, input); got != want[i] {
			t.Errorf("case %d URLTo(%q) = %q, PHP %q", i, path, got, want[i])
		}
	}

	for _, tc := range []struct{ root, want string }{
		{"https://api.ex.pl", "https://api.ex.pl"},
		{"https://api.ex.pl/", "https://api.ex.pl"},
		{"http://h:8080/base", "http://h:8080/base"},
	} {
		if got := classes.BackendURL(tc.root); got != tc.want {
			t.Errorf("BackendURL(%q) = %q, want %q", tc.root, got, tc.want)
		}
	}
	for raw, want := range map[string]string{
		"https://h/a/b?x=1#f": "/a/b",
		"https://h":           "",
		"https://h/":          "/",
		"/rel/path":           "/rel/path",
		"":                    "",
	} {
		if got := classes.URLPath(raw); got != want {
			t.Errorf("URLPath(%q) = %q, want %q", raw, got, want)
		}
	}
}

// TestAllowedItemURL pins the save rule of a url item's address (CR-01).
func TestAllowedItemURL(t *testing.T) {
	for u, want := range map[string]bool{
		"":                               true,
		"/":                              true,
		"/about":                         true,
		"about/team?x=1":                 true,
		"https://example.test/a":         true,
		"HTTP://example.test/a":          true,
		"javascript://%0aalert(1)%0a//x": false,
		"javascript:alert(1)":            false,
		"data:text/html,x":               false,
		"mailto:a@example.test":          false,
		"//evil.test/x":                  false,
		`/\evil.test/x`:                  false,
		`\\evil.test`:                    false,
		"#top":                           false,
		" /about":                        false,
		"/about\n":                       false,
		"java\tscript:alert(1)":          false,
	} {
		if got := classes.AllowedItemURL(u); got != want {
			t.Errorf("AllowedItemURL(%q) = %v, want %v", u, got, want)
		}
	}
}