// SPDX-FileCopyrightText: 2025 Romain Maneschi <romain@gitroot.dev>
//
// SPDX-License-Identifier: EUPL-1.2

package main

import (
	"bytes"
	"fmt"
	"io/fs"
	"testing"
	"time"

	gitroot "gitroot.dev/libs/golang/plugin/model"
	"gitroot.dev/libs/golang/plugin/test"
)

var firstRender = `<li data-hash="aaaa" data-parent-hash="0000000000000000000000000000000000000000"><code title="aaaa">aaaa</code> - <span title="first">first</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>`
var secondRender = `<li data-hash="bbbb" data-parent-hash="aaaa"><code title="bbbb">bbbb</code> - <span title="second">second</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>
<li data-hash="aaaa" data-parent-hash="0000000000000000000000000000000000000000"><code title="aaaa">aaaa</code> - <span title="first">first</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>`
var thirdRender = `<li data-hash="dddd" data-parent-hash="cccc"><code title="dddd">dddd</code> - <span title="four">four</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>
<li data-hash="cccc"><code title="cccc">cccc</code> - <i>commit not found</i></li>
<li data-hash="bbbb" data-parent-hash="aaaa"><code title="bbbb">bbbb</code> - <span title="second">second</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>
<li data-hash="aaaa" data-parent-hash="0000000000000000000000000000000000000000"><code title="aaaa">aaaa</code> - <span title="first">first</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>`
var fourRender = `<li data-hash="dddd" data-parent-hash="cccc"><code title="dddd">dddd</code> - <span title="four">four</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>
<li data-hash="cccc" data-parent-hash="bbbb"><code title="cccc">cccc</code> - <span title="third">third</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>
<li data-hash="bbbb" data-parent-hash="aaaa"><code title="bbbb">bbbb</code> - <span title="second">second</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>
<li data-hash="aaaa" data-parent-hash="0000000000000000000000000000000000000000"><code title="aaaa">aaaa</code> - <span title="first">first</span> <i style="font-size:small;float:right;">(Wed Feb 12 14:33:00 1986) &lt;moi&gt;</i></li>`

func TestBranchRender(t *testing.T) {
	p := &Plugin{
		server: test.NewFakeServer(t),
	}
	p.Init("repo", false, `{"branchesDir": "branches"}`)

	p.AddIfNotExist(gitroot.Commit{Branch: "test", Hash: "aaaa", Message: "first", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: NullCommitHash})
	p.RenderBranches()
	all, err := fs.ReadFile(p.server.Webcontent(), "branches/index.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(all, []byte("<a href=\"branches/test.html\">test</a>")) {
		t.Fatalf("test not found")
	}
	branch, err := fs.ReadFile(p.server.Webcontent(), "branches/test.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(branch, []byte(firstRender)) {
		t.Fatalf("init commit \n---\n%s", branch)
	}

	p.branchCommits = make([]*branchCommits, 0)
	p.AddIfNotExist(gitroot.Commit{Branch: "test", Hash: "bbbb", Message: "second", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "aaaa"})
	p.RenderBranches()
	branch2, err := fs.ReadFile(p.server.Webcontent(), "branches/test.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(branch2, []byte(secondRender)) {
		t.Fatalf("second commit \n---\n%s", branch2)
	}

	p.branchCommits = make([]*branchCommits, 0)
	p.AddIfNotExist(gitroot.Commit{Branch: "test", Hash: "dddd", Message: "four", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "cccc"})
	p.RenderBranches()
	branch3, err := fs.ReadFile(p.server.Webcontent(), "branches/test.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(branch3, []byte(thirdRender)) {
		t.Fatalf("third commit \n---\n%s", branch3)
	}

	p.branchCommits = make([]*branchCommits, 0)
	p.AddIfNotExist(gitroot.Commit{Branch: "test", Hash: "cccc", Message: "third", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "bbbb"})
	p.RenderBranches()
	branch4, err := fs.ReadFile(p.server.Webcontent(), "branches/test.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(branch4, []byte(fourRender)) {
		t.Fatalf("four commit \n---\n%s", branch4)
	}

	p.branchCommits = make([]*branchCommits, 0)
	p.AddIfNotExist(gitroot.Commit{Branch: "test", Hash: "bbbb", Message: "second", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "aaaa"})
	p.RenderBranches()
	branch4, err = fs.ReadFile(p.server.Webcontent(), "branches/test.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(branch4, []byte(fourRender)) {
		t.Fatalf("five commit \n---\n%s", branch4)
	}
}

func TestFillCommits(t *testing.T) {
	fromCalled := ""
	toCalled := ""
	p := &Plugin{
		server: test.NewFakeServerWithOverride(t, test.Override{
			Commits: func(from, to string) ([]gitroot.Commit, error) {
				fromCalled = from
				toCalled = to
				return []gitroot.Commit{
					{Branch: "fillCommits", Hash: "dddd", Message: "four", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "cccc"},
					{Branch: "fillCommits", Hash: "cccc", Message: "third", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "bbbb"},
				}, nil
			},
		}),
	}
	p.Init("repo", false, `{"branchesDir": "branches"}`)

	p.AddIfNotExist(gitroot.Commit{Branch: "fillCommits", Hash: "aaaa", Message: "first", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: NullCommitHash})
	p.AddIfNotExist(gitroot.Commit{Branch: "fillCommits", Hash: "bbbb", Message: "second", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "aaaa"})
	p.AddIfNotExist(gitroot.Commit{Branch: "fillCommits", Hash: "eeee", Message: "five", Date: time.Date(1986, time.February, 12, 14, 33, 0, 0, time.UTC), CommitterName: "moi", ParentHash: "dddd"})
	p.RenderBranches()

	if fromCalled != "dddd" {
		t.Fatal(fmt.Errorf("from not dddd but %s", fromCalled))
	}
	if toCalled != "bbbb" {
		t.Fatal(fmt.Errorf("to not bbbb but %s", toCalled))
	}

	branch, err := fs.ReadFile(p.server.Webcontent(), "branches/fillCommits.html")
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Contains(branch, []byte(fourRender)) {
		t.Fatalf("init commit \n---\n%s", branch)
	}
}