import { NextResponse } from 'next/server';
import { getClients, resetClients } from '@/lib/clients';
import { getFirms } from '@/lib/db';
import axios from 'axios';

export async function GET() {
    try {
        const clients = getClients();
        const firms = getFirms();

        const debug = firms.map((firm) => {
            const client = clients.get(firm.id);
            if (!client) return { firmId: firm.id, firmName: firm.name, status: 'no_client' };

            return {
                firmId: firm.id,
                firmName: firm.name,
                status: 'connected',
                accountCount: client.accountList.length,
                fetchDaysComplete: (client as any).fetchDaysComplete ?? 'n/a (old instance)',
                lastFetchErrors: (client as any).lastFetchErrors ?? {},
                lastFetchRaw: (client as any).lastFetchRaw ?? {},
                accounts: client.accountList.map((acc) => ({
                    id: acc.id,
                    name: acc.name,
                    cash: client.accountCashBalances[acc.id] ?? null,
                    daysTraded: client.daysTraded[acc.id] ?? '(not set)',
                    dailyPnLEntries: (client.dailyPnL[acc.id] ?? []).length,
                    dailyPnL: client.dailyPnL[acc.id] ?? [],
                })),
                recentEntityEvents: client.recentEntityEvents.slice(-10).map((e) => ({
                    ts: new Date(e.ts).toISOString(),
                    entityType: e.entityType,
                    eventType: e.eventType,
                    entity: e.entity,
                })),
            };
        });

        return NextResponse.json({ ok: true, ts: new Date().toISOString(), firms: debug });
    } catch (err) {
        console.error('[GET /api/debug]', err);
        return NextResponse.json({ error: String(err) }, { status: 500 });
    }
}

/** POST /api/debug — manually trigger fetchDaysTraded on all clients and return results */
export async function POST() {
    try {
        const clients = getClients();
        const firms = getFirms();

        const results = await Promise.all(
            firms.map(async (firm) => {
                const client = clients.get(firm.id);
                if (!client || client.accountList.length === 0) {
                    return { firmId: firm.id, firmName: firm.name, status: 'skipped' };
                }

                try {
                    await (client as any).fetchDaysTraded();
                } catch (err) {
                    return { firmId: firm.id, firmName: firm.name, status: 'error', error: String(err) };
                }

                return {
                    firmId: firm.id,
                    firmName: firm.name,
                    status: 'done',
                    fetchDaysComplete: (client as any).fetchDaysComplete ?? 'n/a',
                    errors: (client as any).lastFetchErrors ?? {},
                    rawSamples: (client as any).lastFetchRaw ?? {},
                    daysTraded: client.daysTraded,
                    dailyPnLCounts: Object.fromEntries(
                        Object.entries(client.dailyPnL).map(([k, v]) => [k, (v as any[]).length])
                    ),
                };
            })
        );

        return NextResponse.json({ ok: true, ts: new Date().toISOString(), results });
    } catch (err) {
        console.error('[POST /api/debug]', err);
        return NextResponse.json({ error: String(err) }, { status: 500 });
    }
}

/**
 * PATCH /api/debug — probe Tradovate APIs using a firm's access token.
 *
 * Generic proxy:  { firmId, path?, url?, method?, body? }
 * Full report run: { firmId, action: 'report', account, startDate, endDate }
 *   → does requestreport + getreport polling in one server-side call, returns raw data string
 */
export async function PATCH(req: Request) {
    try {
        const payload = await req.json();
        const { firmId } = payload;
        const client = getClients().get(firmId) as any;
        if (!client?.accessInfo?.accessToken) {
            return NextResponse.json({ error: 'no token for firmId ' + firmId }, { status: 400 });
        }
        const headers = { Authorization: `Bearer ${client.accessInfo.accessToken}` };

        // Full report cycle
        if (payload.action === 'report') {
            const { account, startDate, endDate, name: reportName = 'Fills' } = payload;
            try {
                let reportData = (await axios.post(
                    'https://rpt-demo.tradovateapi.com/v1/reports/requestreport',
                    {
                        name: reportName, representationType: 'json', timezone: -300,
                        params: [
                            { name: 'startDate', value: startDate },
                            { name: 'endDate',   value: endDate },
                            { name: 'startTime', value: '00:00:00' },
                            { name: 'endTime',   value: '00:00:00' },
                            ...(account ? [{ name: 'account', value: account }] : []),
                        ],
                    },
                    { headers }
                )).data;

                let attempts = 0;
                while (reportData?.['p-ticket'] && attempts < 30) {
                    const ticket: string = reportData['p-ticket'];
                    const wait: number = Math.max(1, reportData['p-time'] ?? 1);
                    await new Promise((r) => setTimeout(r, wait * 1000));
                    reportData = (await axios.get(
                        'https://rpt-demo.tradovateapi.com/v1/reports/getreport',
                        { params: { 'p-ticket': ticket }, headers }
                    )).data;
                    attempts++;
                }

                const raw: string = typeof reportData?.data === 'string' ? reportData.data : JSON.stringify(reportData);
                // Parse to count fills and unique tradeDates
                let fillCount = 0;
                let uniqueDates: string[] = [];
                try {
                    const fixed = raw.replace(/"_tradeDate":\s*(\d{4}-\d{2}-\d{2})/g, '"_tradeDate": "$1"');
                    const parsed: any[] = JSON.parse(fixed);
                    fillCount = parsed.length;
                    uniqueDates = [...new Set(parsed.map((f) => f._tradeDate as string))].sort();
                } catch { /* not parseable yet */ }
                return NextResponse.json({ ok: true, attempts, rawLen: raw.length, fillCount, uniqueDates, preview: raw.slice(0, 400) });
            } catch (err: any) {
                return NextResponse.json({
                    ok: false,
                    status: err?.response?.status,
                    data: err?.response?.data,
                    message: err?.message,
                });
            }
        }

        // Generic proxy
        const { path, url: rawUrl, method = 'GET', body: reqBody } = payload;
        const url = rawUrl ?? `https://demo.tradovateapi.com/v1/${path}`;
        try {
            const res = method === 'POST'
                ? await axios.post(url, reqBody, { headers })
                : await axios.get(url, { headers });
            return NextResponse.json({ ok: true, status: res.status, data: res.data });
        } catch (err: any) {
            return NextResponse.json({
                ok: false,
                status: err?.response?.status,
                data: err?.response?.data,
                message: err?.message,
            });
        }
    } catch (err) {
        return NextResponse.json({ error: String(err) }, { status: 500 });
    }
}

/**
 * DELETE /api/debug — force-reinitialize all Tradovate clients with fresh instances
 * Clears the global pool so getClients() recreates everything from DB on next call.
 */
export async function DELETE() {
    try {
        const g = global as any;
        const oldCount = (g.__tradovateClients as Map<number, any> | undefined)?.size ?? 0;

        // Disconnect all existing WebSocket connections before clearing
        resetClients();

        // Re-initialize immediately with fresh instances
        getClients();

        return NextResponse.json({
            ok: true,
            message: `Disconnected ${oldCount} old client(s) — fresh instances initializing`,
            ts: new Date().toISOString(),
        });
    } catch (err) {
        console.error('[DELETE /api/debug]', err);
        return NextResponse.json({ error: String(err) }, { status: 500 });
    }
}