import { exists } from "https://deno.land/std@0.224.0/fs/mod.ts"
import { join } from "https://deno.land/std@0.224.0/path/mod.ts"
import { crayon } from "https://deno.land/x/crayon@3.3.3/mod.ts"

export async function fetch_repo(repo_path: string, remote_url: string) {
	if (!await exists(join(repo_path, ".git"))) await create_repo(repo_path, remote_url)
	const status = await run("git", "-C", repo_path, "pull")
	if (!status.success) warn("Failed to fetch : " + new TextDecoder().decode(status.stderr))
	await run("git", "-C", repo_path, "push")
}

async function create_repo(repo_path: string, remote_url: string) {
	await Deno.mkdir(repo_path, { recursive: true })
	const status = await run("git", "clone", remote_url, repo_path)
	if (!status.success) warn("Failed to clone : " + new TextDecoder().decode(status.stderr))
}

async function run(cmd: string, ...args: string[]) {
	return await new Deno.Command(cmd, { args, stderr: "piped", stdout: "piped" }).output()
}

export async function link_todo(repo_path: string, todo_path: string) {
	const status = await run("ln", "-sf", join(repo_path, "todo"), todo_path)
	if (!status.success) warn("Failed to link : " + new TextDecoder().decode(status.stderr))
}

function warn(text: string) {
	console.warn(crayon.yellow(text))
}

function decode(beuffeur: Uint8Array) {
	return new TextDecoder().decode(beuffeur)
}

export async function push_repo(repo_path: string) {
	console.log(repo_path)
	const status = await run("git", "-C", repo_path, "status", "--short")
	if (!status.success) {
		console.error("Failed to stat : " + decode(status.stderr))
		return
	}
	if (decode(status.stdout) === "") return
	await run("git", "-C", repo_path, "add", "-A")
	await run("git", "-C", repo_path, "commit", "-m", "update " + await hostname())
	await run("git", "-C", repo_path, "push")
}

async function hostname() {
	return (await Deno.readTextFile("/etc/hostname")).trim()
}