<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Livewire;

use Illuminate\Contracts\View\View;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Support\Facades\Auth;
use Livewire\Component;
use Modules\Helpdesk\Models\KanbanBoard as KanbanBoardModel;
use Modules\Helpdesk\Models\Status;
use Modules\Helpdesk\Models\Ticket;
use Modules\Helpdesk\Services\WorkflowNotificationService;

final class KanbanBoard extends Component
{
    public ?int $board_id = null;

    public function mount(): void
    {
        $this->board_id = KanbanBoardModel::query()
            ->where('is_default', true)
            ->orderBy('sort_order')
            ->value('id') ?: KanbanBoardModel::query()->orderBy('sort_order')->value('id');
    }

    /**
     * Move a ticket to another workflow status.
     */
    public function moveTicket(int|string $ticketId, int|string $statusId, WorkflowNotificationService $workflow): void
    {
        $ticket = Ticket::query()->visibleTo(Auth::user())->findOrFail((int) $ticketId);
        $status = Status::query()->findOrFail((int) $statusId);

        $this->authorize('update', $ticket);

        $ticket->forceFill([
            'status_id' => $status->id,
            'completed_at' => $status->is_closed ? now() : null,
            'last_activity_at' => now(),
        ])->save();

        $workflow->dispatch(
            $ticket->fresh(['owner', 'agent', 'status', 'priority', 'category', 'project', 'team']) ?? $ticket,
            $status->is_closed ? 'ticket.closed' : 'ticket.updated',
            Auth::user()
        );

        session()->flash('success', 'Ticket moved to ' . $status->name . '.');
    }

    /**
     * Render the Kanban board.
     */
    public function render(): View
    {
        $boards = KanbanBoardModel::query()
            ->with('statuses')
            ->orderBy('sort_order')
            ->orderBy('name')
            ->get();

        $board = $boards->firstWhere('id', $this->board_id) ?? $boards->first();
        $statuses = $board?->statuses ?? collect();

        if ($statuses->isEmpty()) {
            $statuses = Status::query()->orderBy('sort_order')->orderBy('name')->get();
        }

        return view('helpdesk::livewire.kanban-board', [
            'boards' => $boards,
            'board' => $board,
            'statuses' => $statuses,
            'ticketsByStatus' => $this->ticketsByStatus(),
        ])->layout('layouts.app');
    }

    /**
     * Get visible tickets grouped by status.
     *
     * @return array<int, Collection<int, Ticket>>
     */
    private function ticketsByStatus(): array
    {
        return Ticket::query()
            ->with(['owner', 'agent', 'status', 'priority', 'category', 'project', 'team'])
            ->visibleTo(Auth::user())
            ->latest('last_activity_at')
            ->limit(300)
            ->get()
            ->groupBy('status_id')
            ->all();
    }
}