<?php

namespace App\Http\Controllers\Email;

use App\Http\Controllers\Controller;
use App\Services\Afia\AfiaService;
use App\Services\Billing\BillingClient;
use App\Services\EmailDomain\EmailDomainClient;
use App\Services\Mailbox\MailboxClient;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

/**
 * Ladill Email — Afia chat endpoint. Grounds the assistant in the user's live
 * mailboxes/domains so answers are specific.
 */
class AfiaController extends Controller
{
    public function chat(Request $request, AfiaService $afia): JsonResponse
    {
        $validated = $request->validate([
            'message' => ['required', 'string', 'max:2000'],
            'history' => ['nullable', 'array', 'max:20'],
            'history.*.role' => ['nullable', 'string'],
            'history.*.text' => ['nullable', 'string'],
        ]);

        if (! $afia->enabled()) {
            return response()->json(['message' => 'Afia is not available right now.'], 503);
        }

        try {
            $reply = $afia->chat(trim($validated['message']), $validated['history'] ?? [], $this->context());
        } catch (\Throwable $e) {
            report($e);

            return response()->json(['message' => 'Afia could not respond right now. Please try again.'], 502);
        }

        return response()->json(['reply' => $reply]);
    }

    /** @return array<string,mixed> Live email context for grounding. */
    private function context(): array
    {
        $account = ladill_account();

        if (! $account) {
            return ['signed_in' => 'no'];
        }

        $pid = (string) $account->public_id;
        $ctx = ['signed_in' => 'yes'];

        try {
            $mailboxes = app(MailboxClient::class)->forUser($pid);
            $ctx['mailboxes_total'] = count($mailboxes);
            $ctx['mailboxes_paid'] = count(array_filter($mailboxes, fn ($m) => (bool) ($m['is_paid'] ?? false)));
        } catch (\Throwable) {
        }

        try {
            $domains = app(EmailDomainClient::class)->forUser($pid);
            $ctx['domains_total'] = count($domains);
            $ctx['domains_verified'] = count(array_filter($domains, fn ($d) => (bool) ($d['active'] ?? $d['verified'] ?? false)));
        } catch (\Throwable) {
        }

        try {
            $ctx['wallet_balance_ghs'] = number_format(app(BillingClient::class)->balanceMinor($pid) / 100, 2);
        } catch (\Throwable) {
        }

        return $ctx;
    }
}