import { afterAll, beforeAll, describe, expect, it } from "bun:test";
import * as path from "node:path";
import * as url from "node:url";
import type { AgentMessage } from "@oh-my-pi/pi-agent-core";
import { resetSettingsForTest, Settings } from "@oh-my-pi/pi-coding-agent/config/settings";
import { CustomEditor } from "@oh-my-pi/pi-coding-agent/modes/components/custom-editor";
import { UserMessageComponent } from "@oh-my-pi/pi-coding-agent/modes/components/user-message";
import { getEditorTheme, initTheme } from "@oh-my-pi/pi-coding-agent/modes/theme/theme";
import type { InteractiveModeContext } from "@oh-my-pi/pi-coding-agent/modes/types";
import { UiHelpers } from "@oh-my-pi/pi-coding-agent/modes/utils/ui-helpers";
import { Container } from "@oh-my-pi/pi-tui";

beforeAll(async () => {
	resetSettingsForTest();
	await Settings.init({ inMemory: true });
	Settings.instance.set("tui.hyperlinks", "always");
	await initTheme(false);
});

afterAll(() => {
	resetSettingsForTest();
});

function render(text: string): string {
	return new UserMessageComponent(text).render(80).join("\n");
}

describe("UserMessageComponent magic-keyword highlighting", () => {
	it("gradient-paints a magic keyword in the rendered (sent) message bubble", () => {
		const raw = render("please orchestrate the rollout");
		// Visible text is preserved.
		expect(Bun.stripANSI(raw)).toContain("please orchestrate the rollout");
		// The keyword is gradient-painted: a per-character foreground sequence is emitted,
		// and the word no longer survives as a contiguous run in the rendered bytes.
		expect(raw).toContain("\x1b[38");
		expect(raw).not.toContain("orchestrate");
	});

	it("does not paint a keyword inside an inline code span", () => {
		const raw = render("ship the `orchestrate` helper");
		expect(Bun.stripANSI(raw)).toContain("orchestrate");
		// Code spans render through the code style as a single run — the word stays intact.
		expect(raw).toContain("orchestrate");
	});

	it("does not paint a keyword inside a fenced code block", () => {
		const raw = render("intro\n```\norchestrate\n```");
		expect(Bun.stripANSI(raw)).toContain("orchestrate");
		expect(raw).toContain("orchestrate");
	});

	it("closes OSC 133 prompt zones without opening a command-output zone", () => {
		const raw = render("first line\nsecond line");
		expect(raw).toContain("\x1b]133;A\x07");
		expect(raw).toContain("\x1b]133;B\x07");
		expect(raw).not.toContain("\x1b]133;C\x07");
	});

	it("bolds and underlines image references in the rendered message bubble", () => {
		const raw = render("please inspect [Image #1] before continuing");
		expect(Bun.stripANSI(raw)).toContain("[Image #1]");
		expect(raw).toContain("\x1b[1m");
		expect(raw).toContain("\x1b[4m");
	});

	it("wraps image references in file hyperlinks when a blob path is available", () => {
		const imagePath = path.resolve("/tmp/omp-image.png");
		const imageUri = url.pathToFileURL(path.resolve(imagePath)).href;
		const raw = new UserMessageComponent("please inspect [Image #1]", false, [imagePath]).render(80).join("\n");
		expect(Bun.stripANSI(raw)).toContain("[Image #1]");
		expect(raw).toContain("\x1b]8;id=");
		expect(raw).toContain(imageUri);
	});

	it("wraps draft editor image references in file hyperlinks when a blob path is available", () => {
		const editor = new CustomEditor(getEditorTheme());
		const imagePath = path.resolve("/tmp/omp-image.png");
		const imageUri = url.pathToFileURL(path.resolve(imagePath)).href;
		editor.imageLinks = [imagePath];
		editor.setText("please inspect [Image #1]");
		const raw = editor.render(80).join("\n");
		expect(Bun.stripANSI(raw)).toContain("[Image #1]");
		expect(raw).toContain("\x1b]8;id=");
		expect(raw).toContain(imageUri);
	});

	it("rebuilds user messages with image hyperlinks when image links are not precomputed", () => {
		const displayPath = path.resolve("/tmp/abc123.png");
		const displayUri = url.pathToFileURL(path.resolve(displayPath)).href;
		const chatContainer = new Container();
		const sessionManagerMock = {
			putBlobSync: () => ({
				hash: "abc123",
				path: path.resolve("/tmp/abc123"),
				displayPath,
				get ref() {
					return "blob:sha256:abc123";
				},
			}),
		};
		const helpers = new UiHelpers({
			chatContainer,
			getUserMessageText: () => "please inspect [Image #1]",
			sessionManager: sessionManagerMock,
			viewSession: { sessionManager: sessionManagerMock },
			transcriptMessageComponents: new WeakMap(),
		} as unknown as InteractiveModeContext);
		const message: AgentMessage = {
			role: "user",
			content: [
				{ type: "text", text: "please inspect [Image #1]" },
				{ type: "image", data: Buffer.from("image-bytes").toString("base64"), mimeType: "image/png" },
			],
			attribution: "user",
			timestamp: Date.now(),
		};

		helpers.addMessageToChat(message);
		const component = chatContainer.children.at(-1);
		if (!component) throw new Error("Expected user message component to be appended");
		const raw = component.render(80).join("\n");
		expect(Bun.stripANSI(raw)).toContain("[Image #1]");
		expect(raw).toContain("\x1b]8;id=");
		expect(raw).toContain(displayUri);
	});

	it("highlights paste markers in the draft editor without a hyperlink", () => {
		const editor = new CustomEditor(getEditorTheme());
		editor.setText("see [Paste #1, +30 lines] now");
		const raw = editor.render(80).join("\n");
		expect(Bun.stripANSI(raw)).toContain("[Paste #1, +30 lines]");
		// The marker label is bold-wrapped (highlighted), unlike surrounding plain text.
		expect(raw).toContain("\x1b[1m[Paste #1, +30 lines]");
		// Paste markers are not clickable, so no OSC-8 hyperlink is emitted (contrast with images).
		expect(raw).not.toContain("\x1b]8;id=");
	});

	it("hyperlinks the metadata-bearing image marker format", () => {
		const editor = new CustomEditor(getEditorTheme());
		const imagePath = path.resolve("/tmp/omp-image.png");
		const imageUri = url.pathToFileURL(path.resolve(imagePath)).href;
		editor.imageLinks = [imagePath];
		editor.setText("see [Image #1, 800x600] now");
		const raw = editor.render(80).join("\n");
		expect(Bun.stripANSI(raw)).toContain("[Image #1, 800x600]");
		expect(raw).toContain("\x1b]8;id=");
		expect(raw).toContain(imageUri);
	});
});