<?php

namespace App\Services\Reports;

use App\Models\Department;
use App\Services\DateRange;
use Closure;

readonly class ReportSource
{
    /**
     * @param  array<string,string>  $columns  ключ колонки => подпись (все колонки, доступные для этого источника)
     * @param  array<string,array{label:string,options:?array<int|string,string>}>  $filterableFields  allow-list полей, по которым можно фильтровать в конструкторе шаблонов
     * @param  Closure(Department,DateRange,array<int,string>,array<int,array{field:string,value:mixed}>):array<int,array<string,mixed>>  $resolver
     */
    public function __construct(
        public string $key,
        public string $label,
        public array $columns,
        public array $filterableFields,
        private Closure $resolver,
    ) {}

    /**
     * @param  array<int,string>  $columns  ключи выбранных колонок (по умолчанию — все)
     * @param  array<int,array{field:string,value:mixed}>  $filters
     * @return array<int,array<string,mixed>>
     */
    public function rows(Department $department, DateRange $dateRange, ?array $columns = null, array $filters = []): array
    {
        $columns ??= array_keys($this->columns);

        return ($this->resolver)($department, $dateRange, $columns, $filters);
    }

    public function toSection(
        Department $department,
        DateRange $dateRange,
        ?array $columns = null,
        array $filters = [],
        ?string $title = null,
    ): ReportSection {
        $columns ??= array_keys($this->columns);

        $columnDefs = [];
        foreach ($columns as $key) {
            if (isset($this->columns[$key])) {
                $columnDefs[$key] = $this->columns[$key];
            }
        }

        if (empty($columnDefs)) {
            $columnDefs = $this->columns;
            $columns = array_keys($this->columns);
        }

        return new ReportSection(
            $title ?? $this->label,
            $columnDefs,
            $this->rows($department, $dateRange, $columns, $filters),
        );
    }
}