<?php

namespace App\Http\Controllers\Api;

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

class TicketController extends Controller
{
    use ScopesApiToAccount;

    public function __construct(
        protected QueueEngine $engine,
        protected PlanService $plans,
    ) {}

    public function index(Request $request): JsonResponse
    {
        $this->authorizeAbility($request, 'tickets.view');
        $owner = $this->ownerRef($request);
        $organization = $this->organization($request);

        $tickets = Ticket::owned($owner)
            ->where('organization_id', $organization->id)
            ->when($request->query('queue'), fn ($q, $uuid) => $q->whereHas('serviceQueue', fn ($sq) => $sq->where('uuid', $uuid)))
            ->when($request->query('status'), fn ($q, $status) => $q->where('status', $status))
            ->with(['serviceQueue', 'counter'])
            ->latest('issued_at')
            ->paginate(50);

        return response()->json([
            'data' => $tickets->getCollection()->map(fn (Ticket $t) => TicketPresenter::toArray($t)),
            'meta' => [
                'current_page' => $tickets->currentPage(),
                'last_page' => $tickets->lastPage(),
                'total' => $tickets->total(),
            ],
        ]);
    }

    public function store(Request $request): JsonResponse
    {
        $this->authorizeAbility($request, 'tickets.issue');
        $owner = $this->ownerRef($request);

        $validated = $request->validate([
            'service_queue_id' => ['required', 'uuid'],
            'customer_name' => ['nullable', 'string', 'max:255'],
            'customer_phone' => ['nullable', 'string', 'max:50'],
            'customer_email' => ['nullable', 'email', 'max:255'],
            'priority' => ['nullable', 'string', 'in:'.implode(',', array_keys(config('qms.ticket_priorities')))],
            'source' => ['nullable', 'string', 'in:'.implode(',', array_keys(config('qms.ticket_sources')))],
        ]);

        $queue = ServiceQueue::where('uuid', $validated['service_queue_id'])->firstOrFail();
        $this->authorizeOwner($request, $queue);

        $ticket = $this->engine->issueTicket($queue, $owner, [
            ...$validated,
            'source' => $validated['source'] ?? 'api',
            'actor_ref' => $owner,
        ]);

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

    public function show(Request $request, Ticket $ticket): JsonResponse
    {
        $this->authorizeAbility($request, 'tickets.view');
        $this->authorizeOwner($request, $ticket);

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

    public function callNext(Request $request, ServiceQueue $serviceQueue): JsonResponse
    {
        $this->authorizeAbility($request, 'console.use');
        $this->authorizeOwner($request, $serviceQueue);

        $validated = $request->validate([
            'counter_id' => ['required', 'uuid'],
        ]);

        $counter = \App\Models\Counter::where('uuid', $validated['counter_id'])->firstOrFail();
        $this->authorizeOwner($request, $counter);

        $ticket = $this->engine->callNext($serviceQueue, $counter, $this->ownerRef($request));

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

    public function action(Request $request, Ticket $ticket): JsonResponse
    {
        $this->authorizeAbility($request, 'tickets.manage');
        $this->authorizeOwner($request, $ticket);
        $actor = $this->ownerRef($request);

        $validated = $request->validate([
            'action' => ['required', 'string', 'in:recall,start,hold,skip,complete,no_show,cancel,delay,transfer'],
            'minutes' => ['nullable', 'integer', 'min:5', 'max:120'],
            'to_queue_id' => ['required_if:action,transfer', 'nullable', 'uuid'],
            'reason' => ['nullable', 'string', 'max:500'],
        ]);

        if ($validated['action'] === 'transfer') {
            abort_unless(
                $this->plans->hasFeature($this->organization($request), 'transfer'),
                403,
                'Handing off tickets between queues requires Queue Pro.',
            );
            $toQueue = ServiceQueue::where('uuid', $validated['to_queue_id'])->firstOrFail();
            $this->authorizeOwner($request, $toQueue);
            $result = $this->engine->transfer($ticket, $toQueue, null, $validated['reason'] ?? null, $actor);

            return response()->json(['data' => TicketPresenter::toArray($result->load(['serviceQueue', 'counter']))]);
        }

        $result = match ($validated['action']) {
            'recall' => $this->engine->recall($ticket, $actor),
            'start' => $this->engine->startServing($ticket, $actor),
            'hold' => $this->engine->hold($ticket, $actor),
            'skip' => $this->engine->skip($ticket, $actor),
            'complete' => $this->engine->completeTicket($ticket, $actor),
            'no_show' => $this->engine->markNoShow($ticket, $actor),
            'cancel' => $this->engine->cancel($ticket, $actor),
            'delay' => $this->engine->delayArrival($ticket, (int) ($validated['minutes'] ?? 15), $actor),
            default => $ticket,
        };

        return response()->json(['data' => TicketPresenter::toArray($result->load(['serviceQueue', 'counter']))]);
    }
}