/**
 * Bring an instance up: clicker dependencies, PM2 processes, then a warm-up.
 *
 * Run by the "at log on" scheduled task. Safe to run by hand at any time.
 *
 * The warm-up is not cosmetic. getClients() in lib/clients.ts is lazily
 * bootstrapped — Tradovate clients, the contract resolver, the reporter and the
 * persisted-schedule resume all start inside it — so until something makes an
 * HTTP request the process sits idle and none of that happens.
 */
import { spawnSync } from 'node:child_process';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { ensurePythonDeps } from './ensure-python-deps.mjs';

const ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const PORT = process.env.AUTOFIRMER_PORT ?? '3000';
const BASE = `http://127.0.0.1:${PORT}`;

const log = (msg) => console.log(`[start-all] ${msg}`);

function run(cmd, args) {
    return spawnSync(cmd, args, {
        cwd: ROOT,
        encoding: 'utf8',
        stdio: 'inherit',
        shell: process.platform === 'win32',
    });
}

async function waitForApp(timeoutMs = 120_000) {
    const deadline = Date.now() + timeoutMs;
    while (Date.now() < deadline) {
        try {
            const res = await fetch(`${BASE}/api/auto-trade`, { signal: AbortSignal.timeout(5_000) });
            if (res.ok) return true;
        } catch { /* not up yet */ }
        await new Promise((r) => setTimeout(r, 2_000));
    }
    return false;
}

// ── clicker dependencies (non-fatal) ────────────────────────────────────────
ensurePythonDeps({ log });

// ── PM2 ─────────────────────────────────────────────────────────────────────
log('restoring PM2 processes');
if (run('pm2', ['resurrect']).status !== 0) {
    log('pm2 resurrect failed — is PM2 installed and has `pm2 save` been run?');
    process.exit(1);
}

// ── warm-up ─────────────────────────────────────────────────────────────────
log('waiting for the dashboard to answer');
if (!(await waitForApp())) {
    log(`dashboard did not come up on ${BASE} within 120s — check \`pm2 logs autofirmer\``);
    process.exit(1);
}

log('warming up (this is what triggers the client bootstrap)');
try {
    await fetch(`${BASE}/api/state`, { signal: AbortSignal.timeout(60_000) });
} catch (err) {
    log(`warm-up request failed: ${err.message}`);
}

try {
    const status = await (await fetch(`${BASE}/api/auto-trade`)).json();
    log(status.running
        ? `scheduler resumed — ${status.action} ${status.symbol}`
        : 'scheduler is stopped');
} catch { /* non-critical */ }

log('up');