/**
 * Reporter module — pushes aggregated state to the master dashboard.
 *
 * Every 30 seconds, collects firm-level stats + scheduler state and POSTs
 * to the configured master_dashboard_url. Silently skips if not configured.
 */

import { getSetting } from './db';
import { getFirms } from './db';
import { getClients } from './clients';
import { getSchedulerStatus } from './auto-trade';
import { computeDailyTarget } from './trading-logic';
import type { AccountConfigRow } from './db';

function getAccountConfig(name: string, accounts: AccountConfigRow[]): AccountConfigRow | undefined {
    return [...accounts]
        .sort((a, b) => b.prefix.length - a.prefix.length)
        .find((a) => name.startsWith(a.prefix));
}

function collectFirmStats() {
    const firms = getFirms();
    const clients = getClients();

    return firms.map((f) => {
        const client = clients.get(f.id);
        if (!client || client.accountList.length === 0) {
            return { firm: f.name, totalAccounts: 0, accountsTraded: 0, inTrade: 0 };
        }

        let totalAccounts = 0;
        let accountsTraded = 0;
        let inTrade = 0;

        for (const acc of client.accountList) {
            const cash = client.accountCashBalances[acc.id] ?? { amount: 0, realizedPnL: 0 };
            const autoLiqThreshold = client.autoLiqThresholds[acc.id] ?? 0;
            const isDead = autoLiqThreshold > 0 && cash.amount <= autoLiqThreshold;
            if (isDead) continue;

            totalAccounts++;

            if (client.positions[acc.id]) {
                inTrade++;
                accountsTraded++;
                continue;
            }

            // Check if target was hit today
            const cfg = getAccountConfig(acc.name, f.accounts);
            if (cfg) {
                const dailyPnL = client.dailyPnL[acc.id] ?? [];
                const equityProfit = cash.amount - cfg.account_size;
                const target = computeDailyTarget(cfg.profit_target, cfg.consistency, dailyPnL, cfg.min_day_pnl, cfg.min_trading_days, equityProfit);
                const targetHit = !target ? false :
                    ((target.amount === 0 && Math.abs(cash.realizedPnL) > 0 && (client.daysTraded[acc.id] ?? 0) <= cfg.min_trading_days) ||
                    (cash.realizedPnL >= target.amount));

                if (targetHit || cash.realizedPnL !== 0) {
                    accountsTraded++;
                }
            }
        }

        return { firm: f.name, totalAccounts, accountsTraded, inTrade };
    });
}

// HMR-safe global to avoid duplicate intervals
const _g = globalThis as typeof globalThis & { __reporterInterval?: ReturnType<typeof setInterval> };

export function startReporter() {
    if (_g.__reporterInterval) {
        clearInterval(_g.__reporterInterval);
    }

    const report = async () => {
        const url = getSetting('master_dashboard_url');
        const instanceName = getSetting('instance_name');

        if (!url || !instanceName) return;

        try {
            const firms = collectFirmStats();
            const scheduler = getSchedulerStatus();

            await fetch(`${url}/api/report`, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ instance: instanceName, firms, scheduler }),
            });
        } catch {
            // Master might be down — silently continue
        }
    };

    _g.__reporterInterval = setInterval(report, 30_000);

    // Fire first report after a short delay to let clients sync
    setTimeout(report, 10_000);

    console.log('[reporter] started — reporting every 30s');
}