import { beforeAll, describe, expect, it, vi } from "bun:test";
import type { AgentToolContext } from "@oh-my-pi/pi-agent-core";
import { Settings } from "@oh-my-pi/pi-coding-agent/config/settings";
import { initTheme } from "@oh-my-pi/pi-coding-agent/modes/theme/theme";
import type { ToolSession } from "@oh-my-pi/pi-coding-agent/tools";
import { AskTool } from "@oh-my-pi/pi-coding-agent/tools/ask";
import { ToolAbortError } from "@oh-my-pi/pi-coding-agent/tools/tool-errors";

function createSession(overrides: Partial<ToolSession> = {}): ToolSession {
	return {
		cwd: "/tmp/test",
		hasUI: true,
		getSessionFile: () => null,
		getSessionSpawns: () => "*",
		settings: Settings.isolated(),
		...overrides,
	};
}

function createContext(args: {
	select: (
		prompt: string,
		options: string[],
		dialogOptions?: { initialIndex?: number; timeout?: number },
	) => Promise<string | undefined>;
	input?: (prompt: string) => Promise<string | undefined>;
	abort?: () => void;
}): AgentToolContext {
	// AgentToolContext includes many runtime fields; tests only need UI + abort behavior.
	return {
		hasUI: true,
		ui: {
			select: args.select,
			input: args.input ?? (async () => undefined),
		},
		abort: args.abort ?? (() => {}),
	} as unknown as AgentToolContext;
}

beforeAll(async () => {
	await initTheme(false);
});

describe("AskTool cancellation", () => {
	it("aborts the turn when the user cancels selection", async () => {
		const tool = new AskTool(createSession());
		const abort = vi.fn();
		const context = createContext({
			select: async () => undefined,
			abort,
		});

		expect(
			tool.execute(
				"call-1",
				{
					questions: [
						{
							id: "confirm",
							question: "Proceed?",
							options: [{ label: "yes" }, { label: "no" }],
						},
					],
				},
				undefined,
				undefined,
				context,
			),
		).rejects.toBeInstanceOf(ToolAbortError);
		expect(abort).toHaveBeenCalledTimes(1);
	});

	it("does not abort the turn when cancellation is from ask timeout", async () => {
		const tool = new AskTool(
			createSession({
				settings: Settings.isolated({ "ask.timeout": 0.001 }),
			}),
		);
		const abort = vi.fn();
		const context = createContext({
			select: async () => {
				await Bun.sleep(5);
				return undefined;
			},
			abort,
		});

		const result = await tool.execute(
			"call-2",
			{
				questions: [
					{
						id: "confirm",
						question: "Proceed?",
						options: [{ label: "yes" }, { label: "no" }],
					},
				],
			},
			undefined,
			undefined,
			context,
		);

		expect(result.content[0]?.type).toBe("text");
		if (result.content[0]?.type !== "text") {
			throw new Error("Expected text result");
		}
		expect(result.content[0].text).toContain("User cancelled the selection");
		expect(abort).not.toHaveBeenCalled();
	});

	it("aborts multi-question ask when any question is explicitly cancelled", async () => {
		const tool = new AskTool(createSession());
		const abort = vi.fn();
		const context = createContext({
			select: async prompt => {
				if (prompt.includes("First")) return "one";
				return undefined;
			},
			abort,
		});

		expect(
			tool.execute(
				"call-3",
				{
					questions: [
						{
							id: "first",
							question: "First",
							options: [{ label: "one" }, { label: "two" }],
						},
						{
							id: "second",
							question: "Second",
							options: [{ label: "alpha" }, { label: "beta" }],
						},
					],
				},
				undefined,
				undefined,
				context,
			),
		).rejects.toBeInstanceOf(ToolAbortError);
		expect(abort).toHaveBeenCalledTimes(1);
	});
});