<?php

namespace App\Services;

use App\Models\CompanyAccountPayable;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Validation\ValidationException;

/**
 * Contas a Pagar da matriz (franqueadora). Lançamentos manuais com baixa manual.
 */
class CompanyAccountPayableService
{
    public function list(array $filters = []): Collection
    {
        return CompanyAccountPayable::with('planAccount:id,code,description')
            ->when(
                isset($filters['status']),
                fn ($q) => $q->where('status', $filters['status']),
            )
            ->orderBy('due_date')
            ->get();
    }

    public function findById(int $id): ?CompanyAccountPayable
    {
        return CompanyAccountPayable::find($id);
    }

    public function createManual(array $data): CompanyAccountPayable
    {
        return CompanyAccountPayable::create([
            'origin'                    => CompanyAccountPayable::ORIGIN_MANUAL,
            'financial_plan_account_id' => $data['financial_plan_account_id'] ?? null,
            'history'                   => $data['history'],
            'value'                     => $data['value'],
            'due_date'                  => $data['due_date'],
            'obs'                       => $data['obs'] ?? null,
            'paid_value'                => 0,
            'discount'                  => 0,
            'fine'                      => 0,
            'status'                    => 'pending',
        ])->load('planAccount:id,code,description');
    }

    public function settle(CompanyAccountPayable $payable, array $data): CompanyAccountPayable
    {
        if ($payable->status === 'paid') {
            throw ValidationException::withMessages(['status' => 'Esta conta já está paga.']);
        }

        if ($payable->status === 'cancelled') {
            throw ValidationException::withMessages([
                'status' => 'Esta conta está cancelada e não pode receber baixa.',
            ]);
        }

        $discount = isset($data['discount']) ? (float) $data['discount'] : (float) $payable->discount;
        $fine     = isset($data['fine']) ? (float) $data['fine'] : (float) $payable->fine;

        $paidValue = isset($data['paid_value'])
            ? (float) $data['paid_value']
            : round((float) $payable->value - $discount + $fine, 2);

        $payable->update([
            'status'       => 'paid',
            'discount'     => $discount,
            'fine'         => $fine,
            'paid_value'   => $paidValue,
            'payment_date' => $data['payment_date'] ?? Carbon::today()->format('Y-m-d'),
        ]);

        return $payable->fresh('planAccount:id,code,description');
    }

    public function reopen(CompanyAccountPayable $payable): CompanyAccountPayable
    {
        if ($payable->status !== 'paid') {
            throw ValidationException::withMessages([
                'status' => 'Só é possível reabrir contas que estão pagas.',
            ]);
        }

        $payable->update([
            'status'       => 'pending',
            'paid_value'   => 0,
            'payment_date' => null,
        ]);

        return $payable->fresh('planAccount:id,code,description');
    }
}