package sitereader_test

import (
	"testing"
	"testing/fstest"
	"time"

	"github.com/stretchr/testify/assert"
	"lmika.dev/lmika/weiro/providers/sitereader"
)

func TestProvider_ReadPost(t *testing.T) {
	t.Run("with meta", func(t *testing.T) {
		testFS := fstest.MapFS{
			"site.yaml": {Data: []byte(`base_url: https://example.com`)},
			"posts/test.md": {Data: []byte(`---
date: 2026-02-18T19:59:00Z
title: Test Post Here
tags: [test, example]
---
This is just a test post.
`)},
		}

		pr := sitereader.New(testFS)

		post, err := pr.ReadPost("posts/test.md")
		assert.NoError(t, err)
		assert.Equal(t, "Test Post Here", post.Title)
		assert.Equal(t, time.Date(2026, 2, 18, 19, 59, 0, 0, time.UTC), post.PublishedAt)
		assert.Equal(t, "This is just a test post.\n", post.Body)
	})

	t.Run("without meta", func(t *testing.T) {
		testFS := fstest.MapFS{
			"posts/test.md": {Data: []byte(`---
---
This is just a test post.
`)},
		}

		pr := sitereader.New(testFS)

		post, err := pr.ReadPost("posts/test.md")
		assert.NoError(t, err)
		assert.Equal(t, "", post.Title)
		assert.Equal(t, "This is just a test post.\n", post.Body)
	})
}

func TestProvider_ListPosts(t *testing.T) {
	testFS := fstest.MapFS{
		"posts/01-post1.md": {Data: []byte(`---
id: 111
date: 2026-02-18T19:59:00Z
title: Test Post Here
tags: [test, example]
---
This is just a test post.
`)},
		"posts/02-post2.md": {Data: []byte(`---
id: 222
---
This is just a test post.
`)},
	}

	pr := sitereader.New(testFS)

	posts, err := pr.ListPosts()
	assert.NoError(t, err)

	assert.Equal(t, 2, len(posts))

	assert.Equal(t, "111", posts[0].GUID)
	assert.Equal(t, "222", posts[1].GUID)
}

func TestProvider_ReadSite(t *testing.T) {
	testFS := fstest.MapFS{
		"site.yaml": {Data: []byte(`base_url: https://example.com`)},
		"posts/01-post1.md": {Data: []byte(`---
id: 111
date: 2026-02-18T19:59:00Z
title: Test Post Here
tags: [test, example]
---
This is just a test post.
`)},
		"posts/02-post2.md": {Data: []byte(`---
id: 222
---
This is just a test post.
`)},
	}

	pr := sitereader.New(testFS)

	sites, err := pr.ReadSite()
	assert.NoError(t, err)

	assert.Equal(t, 2, len(sites.Posts))

	assert.Equal(t, "111", sites.Posts[0].GUID)
	assert.Equal(t, "222", sites.Posts[1].GUID)
}