<?php

namespace App\Services;

use App\Models\Kanban;
use Illuminate\Database\Eloquent\Collection;

class KanbanService
{
    private function baseQuery()
    {
        return Kanban::with(['createdByUser', 'responsibleUser', 'applicantUnit', 'targetUnit'])
            ->withCount('replies');
    }

    public function getAll(): Collection
    {
        return $this->baseQuery()
            ->orderBy('order', 'asc')
            ->orderBy('created_at', 'desc')
            ->get();
    }

    public function getAllForUnit(int $unitId): Collection
    {
        return $this->baseQuery()
            ->visibleToUnit($unitId)
            ->orderBy('order', 'asc')
            ->orderBy('created_at', 'desc')
            ->get();
    }

    /**
     * Bulk-update phase + order for a set of cards (drag-and-drop persistence).
     * Expects: [['id' => int, 'phase' => string, 'order' => int], ...]
     */
    public function reorder(array $items): void
    {
        foreach ($items as $item) {
            Kanban::where('id', $item['id'])->update([
                'phase' => $item['phase'],
                'order' => $item['order'],
            ]);
        }
    }

    public function findById(int $id): ?Kanban
    {
        return $this->baseQuery()->find($id);
    }

    public function create(array $data): Kanban
    {
        $model = Kanban::create($data);
        return $this->findById($model->id);
    }

    public function update(int $id, array $data): ?Kanban
    {
        $model = Kanban::find($id);

        if (!$model) {
            return null;
        }

        $model->update($data);
        return $this->findById($model->id);
    }

    public function delete(int $id): bool
    {
        $model = Kanban::find($id);

        if (!$model) {
            return false;
        }

        return $model->delete();
    }
}