<?php

namespace App\Http\Requests\Bo;

use App\Enums\PeriodEnum;
use App\Models\Brand;
use App\Models\Url;
use Carbon\Carbon;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class StatsRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return boolean
     */
    public function authorize(): bool
    {
        return auth('backend')->check();
    }

    /**
     * Prepare the data for validation.
     *
     * @return void
     */
    protected function prepareForValidation(): void
    {
        $now             = Carbon::now();
        $urlId           = $this->input('url');
        $brandId         = $this->input('brand');
        $startDate       = Carbon::parse($this->input('start'));
        $endDate         = Carbon::parse($this->input('end'));
        $adjustedEndDate = $endDate->greaterThan($now) ? $now : $endDate;

        $period = PeriodEnum::tryFrom($this->input('period'));

        // Get start & end dates by period.
        [$adjustedStart, $adjustedEnd] = match ($period) {
            PeriodEnum::week  => [$startDate->copy()->startOfWeek(), $endDate->copy()->endOfWeek()],
            PeriodEnum::month => [$startDate->copy()->startOfMonth(), $endDate->copy()->endOfMonth()],
            default => [$startDate, $adjustedEndDate],
        };

        $this->merge([
            'url'   => Url::find($urlId) ? $urlId : null,
            'brand' => Brand::find($brandId) ? $brandId : null,
            'start' => $adjustedStart->toDateString(),
            'end'   => $adjustedEnd->toDateString(),
        ]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules(): array
    {
        return (request()->post()) ? [
            'period' => [
                'required',
                'string',
                Rule::enum(PeriodEnum::class)
            ],
            'start'  => 'required|date|date_format:Y-m-d|before_or_equal:today|after_or_equal:'
                . Carbon::parse($this->input('end'))->modify('-1 year'),
            'end'    => 'required|date|date_format:Y-m-d|after_or_equal:start',
            'brand'  => 'nullable|integer|exists:App\Models\Brand,id',
            'url'    => 'nullable|integer|exists:App\Models\Url,id'
        ] : [];
    }
}