import * as childProcess from "child_process";
import { SIGKILL } from "constants";
import * as fs from "node:fs";
import * as http from "node:http";
import * as path from "node:path";
import { dirname } from "node:path";
import { fileURLToPath } from "node:url";
import type { endpoints, Entities } from "firefish-js";
import FormData from "form-data";
import got from "got";
import fetch from "node-fetch";
import { DataSource } from "typeorm";
import WebSocket from "ws";
import loadConfig from "../src/config/load.js";
import { entities } from "../src/db/postgre.js";

const _filename = fileURLToPath(import.meta.url);
const _dirname = dirname(_filename);

const config = loadConfig();
export const port = config.port;

export const async = (fn: Function) => (done: Function) => {
	fn().then(
		() => {
			done();
		},
		(err: Error) => {
			done(err);
		},
	);
};

export const api = async (endpoint: string, params: any, me?: any) => {
	endpoint = endpoint.replace(/^\//, "");

	const auth = me
		? {
				i: me.token,
		  }
		: {};

	const res = await got<string>(`http://localhost:${port}/api/${endpoint}`, {
		method: "POST",
		headers: {
			"Content-Type": "application/json",
		},
		body: JSON.stringify(Object.assign(auth, params)),
		retry: {
			limit: 0,
		},
		hooks: {
			beforeError: [
				(error) => {
					const { response } = error;
					if (response && response.body) console.warn(response.body);
					return error;
				},
			],
		},
	});

	const status = res.statusCode;
	const body = res.statusCode !== 204 ? await JSON.parse(res.body) : null;

	return {
		status,
		body,
	};
};

export const request = async (
	endpoint: string,
	params: any,
	me?: any,
): Promise<{ body: any; status: number }> => {
	const auth = me
		? {
				i: me.token,
		  }
		: {};

	const res = await fetch(`http://localhost:${port}/api${endpoint}`, {
		method: "POST",
		headers: {
			"Content-Type": "application/json",
		},
		body: JSON.stringify(Object.assign(auth, params)),
	});

	const status = res.status;
	const body = res.status !== 204 ? await res.json().catch() : null;

	return {
		body,
		status,
	};
};

export const signup = async (params?: any): Promise<any> => {
	const q = Object.assign(
		{
			username: "test",
			password: "test",
		},
		params,
	);

	const res = await api("signup", q);

	return res.body;
};

export const post = async (
	user: any,
	params?: Endpoints["notes/create"]["req"],
): Promise<entities.Note> => {
	const q = Object.assign(
		{
			text: "test",
		},
		params,
	);

	const res = await api("notes/create", q, user);

	return res.body ? res.body.createdNote : null;
};

export const react = async (
	user: any,
	note: any,
	reaction: string,
): Promise<any> => {
	await api(
		"notes/reactions/create",
		{
			noteId: note.id,
			reaction: reaction,
		},
		user,
	);
};

/**
 * Upload file
 * @param user User
 * @param _path Optional, absolute path or relative from ./resources/
 */
export const uploadFile = async (user: any, _path?: string): Promise<any> => {
	const absPath =
		_path == null
			? `${_dirname}/resources/Lenna.jpg`
			: path.isAbsolute(_path)
			  ? _path
			  : `${_dirname}/resources/${_path}`;

	const formData = new FormData() as any;
	formData.append("i", user.token);
	formData.append("file", fs.createReadStream(absPath));
	formData.append("force", "true");

	const res = await got<string>(
		`http://localhost:${port}/api/drive/files/create`,
		{
			method: "POST",
			body: formData,
			retry: {
				limit: 0,
			},
		},
	);

	const body = res.statusCode !== 204 ? await JSON.parse(res.body) : null;

	return body;
};

export const uploadUrl = async (user: any, url: string) => {
	let file: any;

	const ws = await connectStream(user, "main", (msg) => {
		if (msg.type === "driveFileCreated") {
			file = msg.body;
		}
	});

	await api(
		"drive/files/upload-from-url",
		{
			url,
			force: true,
		},
		user,
	);

	await sleep(5000);
	ws.close();

	return file;
};

export function connectStream(
	user: any,
	channel: string,
	listener: (message: Record<string, any>) => any,
	params?: any,
): Promise<WebSocket> {
	return new Promise((res, rej) => {
		const ws = new WebSocket(
			`ws://localhost:${port}/streaming?i=${user.token}`,
		);

		ws.on("open", () => {
			ws.on("message", (data) => {
				const msg = JSON.parse(data.toString());
				if (msg.type === "channel" && msg.body.id === "a") {
					listener(msg.body);
				} else if (msg.type === "connected" && msg.body.id === "a") {
					res(ws);
				}
			});

			ws.send(
				JSON.stringify({
					type: "connect",
					body: {
						channel: channel,
						id: "a",
						pong: true,
						params: params,
					},
				}),
			);
		});
	});
}

export const waitFire = async (
	user: any,
	channel: string,
	trgr: () => any,
	cond: (msg: Record<string, any>) => boolean,
	params?: any,
) => {
	return new Promise<boolean>(async (res, rej) => {
		let timer: NodeJS.Timeout;

		let ws: WebSocket;
		try {
			ws = await connectStream(
				user,
				channel,
				(msg) => {
					if (cond(msg)) {
						ws.close();
						if (timer) clearTimeout(timer);
						res(true);
					}
				},
				params,
			);
		} catch (e) {
			rej(e);
		}

		if (!ws!) return;

		timer = setTimeout(() => {
			ws.close();
			res(false);
		}, 3000);

		try {
			await trgr();
		} catch (e) {
			ws.close();
			if (timer) clearTimeout(timer);
			rej(e);
		}
	});
};

export const simpleGet = async (
	path: string,
	accept = "*/*",
): Promise<{ status?: number; type?: string; location?: string }> => {
	// node-fetchだと3xxを取れない
	return await new Promise((resolve, reject) => {
		const req = http.request(
			`http://localhost:${port}${path}`,
			{
				headers: {
					Accept: accept,
				},
			},
			(res) => {
				if (res.statusCode! >= 400) {
					reject(res);
				} else {
					resolve({
						status: res.statusCode,
						type: res.headers["content-type"],
						location: res.headers.location,
					});
				}
			},
		);

		req.end();
	});
};

export function launchServer(
	callbackSpawnedProcess: (p: childProcess.ChildProcess) => void,
	moreProcess: () => Promise<void> = async () => {},
) {
	return (done: (err?: Error) => any) => {
		const p = childProcess.spawn("node", [_dirname + "/../index.js"], {
			stdio: ["inherit", "inherit", "inherit", "ipc"],
			env: { NODE_ENV: "test", PATH: process.env.PATH },
		});
		callbackSpawnedProcess(p);
		p.on("message", (message) => {
			if (message === "ok")
				moreProcess()
					.then(() => done())
					.catch((e) => done(e));
		});
	};
}

export async function initTestDb(justBorrow = false, initEntities?: any[]) {
	if (process.env.NODE_ENV !== "test") throw "NODE_ENV is not a test";

	const db = new DataSource({
		type: "postgres",
		host: config.db.host,
		port: config.db.port,
		username: config.db.user,
		password: config.db.pass,
		database: config.db.db,
		synchronize: true && !justBorrow,
		dropSchema: true && !justBorrow,
		entities: initEntities || entities,
	});

	await db.initialize();

	return db;
}

export function startServer(
	timeout = 60 * 1000,
): Promise<childProcess.ChildProcess> {
	return new Promise((res, rej) => {
		const t = setTimeout(() => {
			p.kill(SIGKILL);
			rej("timeout to start");
		}, timeout);

		const p = childProcess.spawn("node", [_dirname + "/../built/index.js"], {
			stdio: ["inherit", "inherit", "inherit", "ipc"],
			env: { NODE_ENV: "test", PATH: process.env.PATH },
		});

		p.on("error", (e) => rej(e));

		p.on("message", (message) => {
			if (message === "ok") {
				clearTimeout(t);
				res(p);
			}
		});
	});
}

export function shutdownServer(
	p: childProcess.ChildProcess,
	timeout = 20 * 1000,
) {
	return new Promise((res, rej) => {
		const t = setTimeout(() => {
			p.kill(SIGKILL);
			res("force exit");
		}, timeout);

		p.once("exit", () => {
			clearTimeout(t);
			res("exited");
		});

		p.kill();
	});
}

export function sleep(msec: number) {
	return new Promise<void>((res) => {
		setTimeout(() => {
			res();
		}, msec);
	});
}