package owl_test

import (
	"bytes"
	"h4kor/owl-blogs"
	"h4kor/owl-blogs/test/assertions"
	"io"
	"net/http"
	"net/url"
	"testing"
)

func constructResponse(html []byte) *http.Response {
	url, _ := url.Parse("http://example.com/foo/bar")
	return &http.Response{
		Request: &http.Request{
			URL: url,
		},
		Body: io.NopCloser(bytes.NewReader([]byte(html))),
	}
}

//
// https://www.w3.org/TR/webmention/#h-webmention-verification
//

func TestParseValidHEntry(t *testing.T) {
	html := []byte("<div class=\"h-entry\"><div class=\"p-name\">Foo</div></div>")
	parser := &owl.OwlHtmlParser{}
	entry, err := parser.ParseHEntry(&http.Response{Body: io.NopCloser(bytes.NewReader(html))})

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, entry.Title, "Foo")
}

func TestParseValidHEntryWithoutTitle(t *testing.T) {
	html := []byte("<div class=\"h-entry\"></div><div class=\"p-name\">Foo</div>")
	parser := &owl.OwlHtmlParser{}
	entry, err := parser.ParseHEntry(&http.Response{Body: io.NopCloser(bytes.NewReader(html))})

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, entry.Title, "")
}

func TestGetWebmentionEndpointLink(t *testing.T) {
	html := []byte("<link rel=\"webmention\" href=\"http://example.com/webmention\" />")
	parser := &owl.OwlHtmlParser{}
	endpoint, err := parser.GetWebmentionEndpoint(constructResponse(html))

	assertions.AssertNoError(t, err, "Unable to parse feed")

	assertions.AssertEqual(t, endpoint, "http://example.com/webmention")
}

func TestGetWebmentionEndpointLinkA(t *testing.T) {
	html := []byte("<a rel=\"webmention\" href=\"http://example.com/webmention\" />")
	parser := &owl.OwlHtmlParser{}
	endpoint, err := parser.GetWebmentionEndpoint(constructResponse(html))

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, endpoint, "http://example.com/webmention")
}

func TestGetWebmentionEndpointLinkAFakeWebmention(t *testing.T) {
	html := []byte("<a rel=\"not-webmention\" href=\"http://example.com/foo\" /><a rel=\"webmention\" href=\"http://example.com/webmention\" />")
	parser := &owl.OwlHtmlParser{}
	endpoint, err := parser.GetWebmentionEndpoint(constructResponse(html))

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, endpoint, "http://example.com/webmention")
}

func TestGetWebmentionEndpointLinkHeader(t *testing.T) {
	html := []byte("")
	parser := &owl.OwlHtmlParser{}
	resp := constructResponse(html)
	resp.Header = http.Header{"Link": []string{"<http://example.com/webmention>; rel=\"webmention\""}}
	endpoint, err := parser.GetWebmentionEndpoint(resp)

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, endpoint, "http://example.com/webmention")
}

func TestGetWebmentionEndpointLinkHeaderCommas(t *testing.T) {
	html := []byte("")
	parser := &owl.OwlHtmlParser{}
	resp := constructResponse(html)
	resp.Header = http.Header{
		"Link": []string{"<https://webmention.rocks/test/19/webmention/error>; rel=\"other\", <https://webmention.rocks/test/19/webmention>; rel=\"webmention\""},
	}
	endpoint, err := parser.GetWebmentionEndpoint(resp)

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, endpoint, "https://webmention.rocks/test/19/webmention")
}

func TestGetWebmentionEndpointRelativeLink(t *testing.T) {
	html := []byte("<link rel=\"webmention\" href=\"/webmention\" />")
	parser := &owl.OwlHtmlParser{}
	endpoint, err := parser.GetWebmentionEndpoint(constructResponse(html))

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, endpoint, "http://example.com/webmention")
}

func TestGetWebmentionEndpointRelativeLinkInHeader(t *testing.T) {
	html := []byte("<link rel=\"webmention\" href=\"/webmention\" />")
	parser := &owl.OwlHtmlParser{}
	resp := constructResponse(html)
	resp.Header = http.Header{"Link": []string{"</webmention>; rel=\"webmention\""}}
	endpoint, err := parser.GetWebmentionEndpoint(resp)

	assertions.AssertNoError(t, err, "Unable to parse feed")
	assertions.AssertEqual(t, endpoint, "http://example.com/webmention")
}

// func TestRealWorldWebmention(t *testing.T) {
// 	links := []string{
// 		"https://webmention.rocks/test/1",
// 		"https://webmention.rocks/test/2",
// 		"https://webmention.rocks/test/3",
// 		"https://webmention.rocks/test/4",
// 		"https://webmention.rocks/test/5",
// 		"https://webmention.rocks/test/6",
// 		"https://webmention.rocks/test/7",
// 		"https://webmention.rocks/test/8",
// 		"https://webmention.rocks/test/9",
// 		// "https://webmention.rocks/test/10", // not supported
// 		"https://webmention.rocks/test/11",
// 		"https://webmention.rocks/test/12",
// 		"https://webmention.rocks/test/13",
// 		"https://webmention.rocks/test/14",
// 		"https://webmention.rocks/test/15",
// 		"https://webmention.rocks/test/16",
// 		"https://webmention.rocks/test/17",
// 		"https://webmention.rocks/test/18",
// 		"https://webmention.rocks/test/19",
// 		"https://webmention.rocks/test/20",
// 		"https://webmention.rocks/test/21",
// 		"https://webmention.rocks/test/22",
// 		"https://webmention.rocks/test/23/page",
// 	}

// 	for _, link := range links {
// 		parser := &owl.OwlHtmlParser{}
// 		client := &owl.OwlHttpClient{}
// 		html, _ := client.Get(link)
// 		_, err := parser.GetWebmentionEndpoint(html)

// 		if err != nil {
// 			t.Errorf("Unable to find webmention: %v for link %v", err, link)
// 		}
// 	}

// }