<?php

namespace App\Services;

use App\Models\FranchiseeContract;
use App\Models\FranchiseeContractTaxHistory;
use Illuminate\Database\Eloquent\Collection;

class FranchiseeContractService
{
    public function getAll(): Collection
    {
        return FranchiseeContract::orderBy('created_at', 'desc')
            ->get();
    }

    public function getActive(): Collection
    {
        $today = now()->toDateString();

        return FranchiseeContract::with('unit')
            ->whereNotNull('start_date')
            ->whereNotNull('end_date')
            ->where('start_date', '<=', $today)
            ->where('end_date', '>=', $today)
            ->orderBy('start_date')
            ->get();
    }

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

    public function getByUnitId(int $unitId): Collection
    {
        return FranchiseeContract::where('unit_id', $unitId)
            ->orderBy('created_at', 'desc')
            ->get();
    }

    public function create(array $data): FranchiseeContract
    {
        $data['protocol'] = (FranchiseeContract::where('unit_id', $data['unit_id'])->max('protocol') ?? 0) + 1;
        $data['signature_date'] = $data['start_date'];

        if (isset($data['start_date'], $data['end_date'])) {
            $data['validity_months'] = (int) \Carbon\Carbon::parse($data['start_date'])
                ->diffInMonths(\Carbon\Carbon::parse($data['end_date']));
        }

        return FranchiseeContract::create($data);
    }

    public function update(int $id, array $data): ?FranchiseeContract
    {
        $model = $this->findById($id);

        if (!$model) {
            return null;
        }

        $taxFields = ['inhabitant_classification_id', 'tbr_fixed_value', 'marketing_fund_percentage', 'maintance_tax_percentage'];
        $hasTaxChange = collect($taxFields)->contains(fn($field) => array_key_exists($field, $data));

        $model->update($data);

        if ($hasTaxChange) {
            FranchiseeContractTaxHistory::create([
                'franchisee_contract_id'       => $model->id,
                'inhabitant_classification_id' => $model->inhabitant_classification_id,
                'tbr_fixed_value'              => $model->tbr_fixed_value,
                'marketing_fund_percentage'    => $model->marketing_fund_percentage,
                'maintance_tax_percentage'     => $model->maintance_tax_percentage,
            ]);
        }

        return $model->fresh();
    }

    public function getTaxHistory(int $id): Collection
    {
        return FranchiseeContractTaxHistory::with('inhabitantClassification')
            ->where('franchisee_contract_id', $id)
            ->orderBy('created_at', 'desc')
            ->get();
    }

    public function delete(int $id): bool
    {
        $model = $this->findById($id);

        if (!$model) {
            return false;
        }

        return $model->delete();
    }

    // Add custom business logic methods here
}