#!/usr/bin/env node
import blessed from 'blessed';
import { load_client_config } from '../client/config.mjs';
import { get_queue, resolve_queue_item } from '../client/index.mjs';

const POLL_INTERVAL = 2000;

const { username, secret } = load_client_config(process.argv);

const screen = blessed.screen({
	smartCSR: true,
	title: 'ccc-queue',
});

// ── Layout ────────────────────────────────────────────────────────────────────

const list_box = blessed.list({
	top: 0,
	left: 0,
	width: '40%',
	height: '100%-3',
	border: { type: 'line' },
	label: ' Pending Actions ',
	scrollable: true,
	keys: true,
	vi: true,
	mouse: true,
	style: {
		selected: { bg: 'blue', fg: 'white', bold: true },
		border: { fg: 'cyan' },
		label: { fg: 'cyan', bold: true },
	},
});

const detail_box = blessed.box({
	top: 0,
	left: '40%',
	width: '60%',
	height: '100%-3',
	border: { type: 'line' },
	label: ' Details ',
	scrollable: true,
	alwaysScroll: true,
	tags: true,
	style: {
		border: { fg: 'cyan' },
		label: { fg: 'cyan', bold: true },
	},
});

const status_bar = blessed.box({
	bottom: 0,
	left: 0,
	width: '100%',
	height: 3,
	border: { type: 'line' },
	tags: true,
	style: { border: { fg: 'grey' } },
});

screen.append(list_box);
screen.append(detail_box);
screen.append(status_bar);

// ── State ─────────────────────────────────────────────────────────────────────

let items = [];
let status_text = '';

function set_status(text, is_error = false) {
	status_text = text;
	const color = is_error ? 'red' : 'green';
	status_bar.setContent(
		`  {${color}-fg}${text}{/${color}-fg}   ` +
		`{grey-fg}[y]{/grey-fg} approve  ` +
		`{grey-fg}[n]{/grey-fg} deny  ` +
		`{grey-fg}[r]{/grey-fg} refresh  ` +
		`{grey-fg}[q]{/grey-fg} quit`
	);
	screen.render();
}

function render_detail(item) {
	if (!item) {
		detail_box.setContent('{grey-fg}No item selected{/grey-fg}');
		return;
	}
	const lines = [
		`{bold}Action:{/bold}       ${item.action}`,
		`{bold}ID:{/bold}           ${item.id}`,
		`{bold}Submitted by:{/bold} ${item.submitted_by}`,
		`{bold}Created:{/bold}      ${item.created_at}`,
		'',
		'{bold}Params:{/bold}',
	];
	for (const [k, v] of Object.entries(item.params ?? {})) {
		lines.push(`  {cyan-fg}${k}{/cyan-fg}: ${v}`);
	}
	detail_box.setContent(lines.join('\n'));
}

function render_list() {
	const selected = list_box.selected ?? 0;
	list_box.clearItems();
	if (items.length === 0) {
		list_box.addItem('{grey-fg}(no pending items){/grey-fg}');
	} else {
		for (const item of items) {
			list_box.addItem(`{yellow-fg}${item.id.slice(0, 8)}{/yellow-fg}  ${item.action}`);
		}
		list_box.select(Math.min(selected, items.length - 1));
	}
	render_detail(items[list_box.selected] ?? null);
	screen.render();
}

// ── Polling ───────────────────────────────────────────────────────────────────

async function refresh() {
	try {
		items = await get_queue(username, secret);
		render_list();
		set_status(`Last refresh: ${new Date().toLocaleTimeString()}`);
	} catch (err) {
		set_status(`Refresh failed: ${err.message}`, true);
	}
}

// ── Actions ───────────────────────────────────────────────────────────────────

async function decide(decision) {
	const item = items[list_box.selected];
	if (!item) {
		return;
	}
	set_status(`Sending ${decision} for ${item.id.slice(0, 8)}…`);
	try {
		await resolve_queue_item(item.id, decision, username, secret);
		await refresh();
	} catch (err) {
		set_status(`Failed: ${err.message}`, true);
	}
}

// ── Keys ──────────────────────────────────────────────────────────────────────

screen.key(['q', 'C-c'], () => process.exit(0));
screen.key('r', refresh);
screen.key('y', () => decide('approve'));
screen.key('n', () => decide('deny'));

list_box.on('select item', () => {
	render_detail(items[list_box.selected] ?? null);
	screen.render();
});

list_box.focus();

// ── Boot ──────────────────────────────────────────────────────────────────────

set_status('Connecting…');
refresh();
const poll = setInterval(refresh, POLL_INTERVAL);
poll.unref();