<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\ServiceQueue;
use App\Models\Ticket;
use App\Services\Qms\QueueEngine;
use App\Services\Qms\TicketPresenter;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class PublicQueueController extends Controller
{
    public function __construct(
        protected QueueEngine $engine,
    ) {}

    public function join(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'queue_uuid' => ['required', 'uuid'],
            'customer_name' => ['nullable', 'string', 'max:255'],
            'customer_phone' => ['required', 'string', 'max:50'],
            'customer_email' => ['nullable', 'email'],
            'priority' => ['nullable', 'string', 'in:'.implode(',', array_keys(config('qms.ticket_priorities')))],
        ]);

        $queue = ServiceQueue::where('uuid', $validated['queue_uuid'])
            ->where('is_active', true)
            ->where('is_paused', false)
            ->firstOrFail();

        $ticket = $this->engine->issueTicket($queue, $queue->owner_ref, [
            'customer_name' => $validated['customer_name'] ?? null,
            'customer_phone' => $validated['customer_phone'],
            'customer_email' => $validated['customer_email'] ?? null,
            'priority' => $validated['priority'] ?? 'walk_in',
            'source' => 'mobile',
        ]);

        return response()->json(['data' => TicketPresenter::toArray($ticket)], 201);
    }

    public function show(string $qrToken): JsonResponse
    {
        $ticket = Ticket::where('qr_token', $qrToken)->with(['serviceQueue', 'counter'])->firstOrFail();

        $ahead = Ticket::query()
            ->where('service_queue_id', $ticket->service_queue_id)
            ->where('status', 'waiting')
            ->where('issued_at', '<', $ticket->issued_at)
            ->count();

        $data = TicketPresenter::toArray($ticket, false);
        $data['customers_ahead'] = $ahead;

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

    public function delay(Request $request, string $qrToken): JsonResponse
    {
        $ticket = Ticket::where('qr_token', $qrToken)->whereIn('status', ['waiting', 'on_hold'])->firstOrFail();

        $validated = $request->validate(['minutes' => ['required', 'integer', 'min:5', 'max:120']]);
        $ticket = $this->engine->delayArrival($ticket, $validated['minutes']);

        return response()->json(['data' => TicketPresenter::toArray($ticket)]);
    }

    public function cancel(string $qrToken): JsonResponse
    {
        $ticket = Ticket::where('qr_token', $qrToken)->whereIn('status', ['waiting', 'on_hold', 'called'])->firstOrFail();
        $ticket = $this->engine->cancel($ticket);

        return response()->json(['data' => TicketPresenter::toArray($ticket)]);
    }
}