// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package hugolib

import (
	"fmt"
	"html/template"
	"path/filepath"
	"testing"

	qt "github.com/frankban/quicktest"

	"github.com/gohugoio/hugo/deps"
)

func TestPermalink(t *testing.T) {
	t.Parallel()

	tests := []struct {
		file         string
		base         template.URL
		slug         string
		url          string
		uglyURLs     bool
		canonifyURLs bool
		expectedAbs  string
		expectedRel  string
	}{
		{"x/y/z/boofar.md", "", "", "", false, false, "/x/y/z/boofar/", "/x/y/z/boofar/"},
		{"x/y/z/boofar.md", "", "", "", false, false, "/x/y/z/boofar/", "/x/y/z/boofar/"},
		// Issue #1174
		{"x/y/z/boofar.md", "http://gopher.com/", "", "", false, true, "http://gopher.com/x/y/z/boofar/", "/x/y/z/boofar/"},
		{"x/y/z/boofar.md", "http://gopher.com/", "", "", true, true, "http://gopher.com/x/y/z/boofar.html", "/x/y/z/boofar.html"},
		{"x/y/z/boofar.md", "", "boofar", "", false, false, "/x/y/z/boofar/", "/x/y/z/boofar/"},
		{"x/y/z/boofar.md", "http://barnew/", "", "", false, false, "http://barnew/x/y/z/boofar/", "/x/y/z/boofar/"},
		{"x/y/z/boofar.md", "http://barnew/", "boofar", "", false, false, "http://barnew/x/y/z/boofar/", "/x/y/z/boofar/"},
		{"x/y/z/boofar.md", "", "", "", true, false, "/x/y/z/boofar.html", "/x/y/z/boofar.html"},
		{"x/y/z/boofar.md", "", "", "", true, false, "/x/y/z/boofar.html", "/x/y/z/boofar.html"},
		{"x/y/z/boofar.md", "", "boofar", "", true, false, "/x/y/z/boofar.html", "/x/y/z/boofar.html"},
		{"x/y/z/boofar.md", "http://barnew/", "", "", true, false, "http://barnew/x/y/z/boofar.html", "/x/y/z/boofar.html"},
		{"x/y/z/boofar.md", "http://barnew/", "boofar", "", true, false, "http://barnew/x/y/z/boofar.html", "/x/y/z/boofar.html"},
		{"x/y/z/boofar.md", "http://barnew/boo/", "booslug", "", true, false, "http://barnew/boo/x/y/z/booslug.html", "/boo/x/y/z/booslug.html"},
		{"x/y/z/boofar.md", "http://barnew/boo/", "booslug", "", false, true, "http://barnew/boo/x/y/z/booslug/", "/x/y/z/booslug/"},
		{"x/y/z/boofar.md", "http://barnew/boo/", "booslug", "", false, false, "http://barnew/boo/x/y/z/booslug/", "/boo/x/y/z/booslug/"},
		{"x/y/z/boofar.md", "http://barnew/boo/", "booslug", "", true, true, "http://barnew/boo/x/y/z/booslug.html", "/x/y/z/booslug.html"},
		{"x/y/z/boofar.md", "http://barnew/boo", "booslug", "", true, true, "http://barnew/boo/x/y/z/booslug.html", "/x/y/z/booslug.html"},
		// Issue #4666
		{"x/y/z/boo-makeindex.md", "http://barnew/boo", "", "", true, true, "http://barnew/boo/x/y/z/boo-makeindex.html", "/x/y/z/boo-makeindex.html"},

		// test URL overrides
		{"x/y/z/boofar.md", "", "", "/z/y/q/", false, false, "/z/y/q/", "/z/y/q/"},
	}

	for i, test := range tests {
		test := test
		t.Run(fmt.Sprintf("%s-%d", test.file, i), func(t *testing.T) {
			t.Parallel()
			c := qt.New(t)
			cfg, fs := newTestCfg()

			cfg.Set("uglyURLs", test.uglyURLs)
			cfg.Set("canonifyURLs", test.canonifyURLs)
			cfg.Set("baseURL", test.base)

			pageContent := fmt.Sprintf(`---
title: Page
slug: %q
url: %q
output: ["HTML"]
---
Content
`, test.slug, test.url)

			writeSource(t, fs, filepath.Join("content", filepath.FromSlash(test.file)), pageContent)

			s := buildSingleSite(t, deps.DepsCfg{Fs: fs, Cfg: cfg}, BuildCfg{SkipRender: true})
			c.Assert(len(s.RegularPages()), qt.Equals, 1)

			p := s.RegularPages()[0]

			u := p.Permalink()

			expected := test.expectedAbs
			if u != expected {
				t.Fatalf("[%d] Expected abs url: %s, got: %s", i, expected, u)
			}

			u = p.RelPermalink()

			expected = test.expectedRel
			if u != expected {
				t.Errorf("[%d] Expected rel url: %s, got: %s", i, expected, u)
			}
		})
	}
}

func TestRelativeURLInFrontMatter(t *testing.T) {
	config := `
baseURL = "https://example.com"
defaultContentLanguage = "en"
defaultContentLanguageInSubdir = false

[Languages]
[Languages.en]
weight = 10
contentDir = "content/en"
[Languages.nn]
weight = 20
contentDir = "content/nn"

`

	pageTempl := `---
title: "A page"
url: %q
---

Some content.
`

	b := newTestSitesBuilder(t).WithConfigFile("toml", config)
	b.WithContent("content/en/blog/page1.md", fmt.Sprintf(pageTempl, "myblog/p1/"))
	b.WithContent("content/en/blog/page2.md", fmt.Sprintf(pageTempl, "../../../../../myblog/p2/"))
	b.WithContent("content/en/blog/page3.md", fmt.Sprintf(pageTempl, "../myblog/../myblog/p3/"))
	b.WithContent("content/en/blog/_index.md", fmt.Sprintf(pageTempl, "this-is-my-english-blog"))
	b.WithContent("content/nn/blog/page1.md", fmt.Sprintf(pageTempl, "myblog/p1/"))
	b.WithContent("content/nn/blog/_index.md", fmt.Sprintf(pageTempl, "this-is-my-blog"))

	b.Build(BuildCfg{})

	b.AssertFileContent("public/nn/myblog/p1/index.html", "Single: A page|Hello|nn|RelPermalink: /nn/myblog/p1/|")
	b.AssertFileContent("public/nn/this-is-my-blog/index.html", "List Page 1|A page|Hello|https://example.com/nn/this-is-my-blog/|")
	b.AssertFileContent("public/this-is-my-english-blog/index.html", "List Page 1|A page|Hello|https://example.com/this-is-my-english-blog/|")
	b.AssertFileContent("public/myblog/p1/index.html", "Single: A page|Hello|en|RelPermalink: /myblog/p1/|Permalink: https://example.com/myblog/p1/|")
	b.AssertFileContent("public/myblog/p2/index.html", "Single: A page|Hello|en|RelPermalink: /myblog/p2/|Permalink: https://example.com/myblog/p2/|")
	b.AssertFileContent("public/myblog/p3/index.html", "Single: A page|Hello|en|RelPermalink: /myblog/p3/|Permalink: https://example.com/myblog/p3/|")
}
