package tgrich

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

	"git.scuroneko.dev/scuroneko/laniakea/v2/tgapi"
)

func TestRich103HTML(t *testing.T) {
	empty := ""
	for _, tc := range []struct {
		name     string
		button   tgapi.RichMessageButton
		fragment string
	}{
		{"url", tgapi.RichMessageButton{URL: "https://example.com/?a=1&b=2"}, `url="https://example.com/?a=1&b=2"`},
		{"callback", tgapi.RichMessageButton{CallbackData: `a"<&`, Style: tgapi.RichMessageButtonStyleLink}, `data="a&quot;&lt;&amp;"`},
		{"web app", tgapi.RichMessageButton{WebApp: &tgapi.WebAppInfo{URL: "https://example.com"}}, `type="web_app"`},
		{"login", tgapi.RichMessageButton{LoginURL: &tgapi.LoginURL{URL: "https://example.com", ForwardText: "Forward", RequestWriteAccess: true}}, `request-write-access`},
		{"inline", tgapi.RichMessageButton{SwitchInlineQuery: &empty}, `query=""`},
		{"current", tgapi.RichMessageButton{SwitchInlineQueryCurrentChat: &empty}, `type="switch_inline_query_current_chat"`},
		{"chosen", tgapi.RichMessageButton{SwitchInlineQueryChosenChat: &tgapi.SwitchInlineQueryChosenChat{AllowUserChats: true}}, `allow-user-chats`},
		{"copy", tgapi.RichMessageButton{CopyText: &tgapi.CopyTextButton{Text: "copy"}}, `text="copy"`},
		{"disabled", tgapi.RichMessageButton{Disabled: &tgapi.DisabledButton{}}, `type="disabled"`},
	} {
		t.Run(tc.name, func(t *testing.T) {
			tc.button.Text = Text("<Go>")
			for _, block := range []tgapi.InputRichBlock{P(Button(tc.button)), ButtonsWithAlign([]tgapi.RichMessageButton{tc.button}, tgapi.RichBlockButtonCenter)} {
				msg, err := BuildHTML(block)
				if err != nil {
					t.Fatal(err)
				}
				if !strings.Contains(msg.HTML, tc.fragment) || !strings.Contains(msg.HTML, "&lt;Go&gt;</tg-button>") {
					t.Fatalf("unexpected HTML: %s", msg.HTML)
				}
			}
		})
	}
	msg, err := BuildHTML(ExpandableBlockquoteWithCredit(Bold(Text("Quote")), Text("Author")), DocumentWithCaption(tgapi.InputMedia{Media: "attach://notes"}, Caption(Text("Notes"))), NewTable().SetCompact(true).Build())
	if err != nil {
		t.Fatal(err)
	}
	for _, fragment := range []string{"<blockquote expandable><b>Quote</b><cite>Author</cite></blockquote>", `<tg-document src="tg://document?id=media_1"></tg-document>`, "<table compact>"} {
		if !strings.Contains(msg.HTML, fragment) {
			t.Fatalf("missing %s in %s", fragment, msg.HTML)
		}
	}
	if len(msg.Media) != 1 || msg.Media[0].Media.Type != tgapi.InputMediaTypeDocument || msg.Media[0].Media.Media != "attach://notes" {
		t.Fatalf("bad media: %#v", msg.Media)
	}
	if _, err := BuildDraftHTML(Document(tgapi.InputMedia{Media: "attach://notes"})); !errors.Is(err, tgapi.ErrRichMessageDraftUploadUnsupported) {
		t.Fatalf("draft: %v", err)
	}
}

func TestRich103Validation(t *testing.T) {
	good := tgapi.RichMessageButton{Text: Text("Go"), CallbackData: "x"}
	for _, n := range []int{0, 1, 8, 9} {
		buttons := make([]tgapi.RichMessageButton, n)
		for i := range buttons {
			buttons[i] = good
		}
		_, err := BuildHTML(Buttons(buttons))
		if (err == nil) != (n >= 1 && n <= 8) {
			t.Fatalf("row %d: %v", n, err)
		}
	}
	for _, tc := range []struct {
		name   string
		change func(*tgapi.RichMessageButton)
	}{
		{"no action", func(b *tgapi.RichMessageButton) { b.CallbackData = "" }},
		{"two actions", func(b *tgapi.RichMessageButton) { b.URL = "https://example.com" }},
		{"long callback", func(b *tgapi.RichMessageButton) { b.CallbackData = strings.Repeat("я", 33) }},
		{"formatting", func(b *tgapi.RichMessageButton) { b.Text = Bold(Text("Go")) }},
		{"style", func(b *tgapi.RichMessageButton) { b.Style = "disable" }},
		{"link url", func(b *tgapi.RichMessageButton) { b.CallbackData = ""; b.URL = "https://example.com"; b.Style = "link" }},
		{"login bot", func(b *tgapi.RichMessageButton) {
			b.CallbackData = ""
			b.LoginURL = &tgapi.LoginURL{URL: "https://example.com", BotUsername: "other"}
		}},
	} {
		t.Run(tc.name, func(t *testing.T) {
			b := good
			tc.change(&b)
			if _, err := BuildHTML(P(Button(b))); !errors.Is(err, ErrRichInvalidButton) {
				t.Fatalf("got %v", err)
			}
		})
	}
	good.CallbackData = strings.Repeat("я", 32)
	if _, err := BuildHTML(P(Button(good))); err != nil {
		t.Fatal(err)
	}
	if _, err := BuildHTML(ButtonsWithAlign([]tgapi.RichMessageButton{good}, "bottom")); !errors.Is(err, ErrRichInvalidButton) {
		t.Fatalf("alignment: %v", err)
	}
}

func TestRich103InputJSON(t *testing.T) {
	for _, block := range []tgapi.InputRichBlock{ExpandableBlockquote(Text("quote")), Document(tgapi.InputMedia{Media: "file"}), Buttons([]tgapi.RichMessageButton{{Text: Text("Off"), Disabled: &tgapi.DisabledButton{}}})} {
		data, err := json.Marshal(block)
		if err != nil {
			t.Fatal(err)
		}
		var fields map[string]json.RawMessage
		if err := json.Unmarshal(data, &fields); err != nil {
			t.Fatal(err)
		}
		if len(fields["type"]) == 0 {
			t.Fatalf("missing discriminator: %s", data)
		}
	}
}

func TestRichButtonLabelEntitiesAndLimits(t *testing.T) {
	label := tgapi.RichTextArray{
		Text("At "),
		tgapi.RichTextDateTime{Text: Text("noon"), UnixTime: 1000, DateTimeFormat: "t"},
		tgapi.RichTextCustomEmoji{CustomEmojiID: "123", AlternativeText: "!"},
	}
	if _, err := BuildHTML(P(Button(tgapi.RichMessageButton{Text: label, Disabled: &tgapi.DisabledButton{}}))); err != nil {
		t.Fatal(err)
	}
	for _, n := range []int{0, 1, 256, 257} {
		_, err := BuildHTML(P(Button(tgapi.RichMessageButton{Text: Text("Copy"), CopyText: &tgapi.CopyTextButton{Text: strings.Repeat("я", n)}})))
		if (err == nil) != (n >= 1 && n <= 256) {
			t.Fatalf("copy length %d: %v", n, err)
		}
	}
	for _, text := range []tgapi.RichText{
		Bold(Text(strings.Repeat("я", maxRichTextChars+1))),
		URL(Text(strings.Repeat("я", maxRichTextChars+1)), "https://example.com"),
	} {
		if _, err := BuildHTML(P(text)); !errors.Is(err, ErrRichTextTooLong) {
			t.Fatalf("nested text bypassed limit: %v", err)
		}
	}
}