<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Validation\Rule;
use Modules\Helpdesk\Services\TicketService;

final class TicketStoreController extends Controller
{
    /**
     * Store a new helpdesk ticket using a normal HTTP form post.
     *
     * This avoids the Livewire update endpoint for ticket creation, which prevents
     * proxy/hash update-route 404s from blocking ticket creation.
     */
    public function __invoke(Request $request, TicketService $tickets): RedirectResponse
    {
        $validated = $request->validate([
            'company_id' => ['nullable', 'integer'],
            'subject' => ['required', 'string', 'max:200'],
            'body' => ['required', 'string', 'min:10'],
            'priority_id' => ['required', 'integer', Rule::exists('helpdesk_priorities', 'id')],
            'category_id' => ['nullable', 'integer', Rule::exists('helpdesk_categories', 'id')],
            'project_id' => ['nullable', 'integer', Rule::exists('helpdesk_projects', 'id')],
            'product_id' => ['nullable', 'integer', Rule::exists('helpdesk_products', 'id')],
            'team_id' => ['nullable', 'integer', Rule::exists('helpdesk_teams', 'id')],
            'due_at' => ['nullable', 'date'],
            'attachments' => ['nullable', 'array'],
            'attachments.*' => $this->attachmentFileRules(),
        ]);

        $user = Auth::user();

        abort_if($user === null, 403);

        $uploadedFiles = $request->file('attachments', []);
        $uploadedFiles = is_array($uploadedFiles) ? $uploadedFiles : [$uploadedFiles];

        $ticket = $tickets->create($user, [
            'company_id' => $validated['company_id'] ?? null,
            'subject' => $validated['subject'],
            'body' => $validated['body'],
            'priority_id' => $validated['priority_id'],
            'category_id' => $validated['category_id'] ?? null,
            'project_id' => $validated['project_id'] ?? null,
            'product_id' => $validated['product_id'] ?? null,
            'team_id' => $validated['team_id'] ?? null,
            'due_at' => $validated['due_at'] ?? null,
        ], $uploadedFiles);

        return redirect()
            ->route('helpdesk.tickets.index')
            ->with('success', 'Ticket ' . $ticket->reference . ' has been created.');
    }

    /**
     * Return Helpdesk attachment validation rules without relying on a newly autoloaded support class.
     *
     * @param bool $required Whether at least one uploaded file is required.
     * @return array<int, string>
     */
    private function attachmentFileRules(bool $required = false): array
    {
        return array_values(array_filter([
            $required ? 'required' : null,
            'file',
            'max:' . (int) config('helpdesk.max_upload_kb', 10240),
            'extensions:' . implode(',', $this->allowedAttachmentExtensions()),
        ]));
    }

    /**
     * Return lower-case Helpdesk attachment extensions.
     *
     * @return array<int, string>
     */
    private function allowedAttachmentExtensions(): array
    {
        return collect(config('helpdesk.allowed_extensions', config('helpdesk.allowed_mimes', [])))
            ->filter(static fn (mixed $extension): bool => is_string($extension) && trim($extension) !== '')
            ->map(static fn (string $extension): string => strtolower(ltrim(trim($extension), '.')))
            ->unique()
            ->values()
            ->all();
    }

}