webstatement/app/Http/Requests/PrintStatementRequest.php

<?php

namespace Modules\Webstatement\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Modules\Webstatement\Models\PrintStatementLog as Statement;

class PrintStatementRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     */
    public function authorize(): bool
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     */
    public function rules(): array
    {
        $rules = [
            'account_number' => ['required', 'string'],
            'is_period_range' => ['sometimes', 'boolean'],
            'email' => ['nullable', 'email'],
            'email_sent_at' => ['nullable', 'timestamp'],
            'request_type' => ['sometimes', 'string', 'in:single_account,branch,all_branches'],
            'batch_id' => ['nullable', 'string'],
            'period_from' => [
                'required',
                'string',
                'regex:/^\d{6}$/', // YYYYMM format
                // Prevent duplicate requests with same account number and period
                function ($attribute, $value, $fail) {
                    $query = Statement::where('account_number', $this->input('account_number'))
                                      ->where('authorization_status', '!=', 'rejected')
                                      ->where('is_available', true)
                                      ->where('period_from', $value);

                    // If this is an update request, exclude the current record
                    if ($this->route('statement')) {
                        $query->where('id', '!=', $this->route('statement'));
                    }

                    // If period_to is provided, check for overlapping periods
                    if ($this->input('period_to')) {
                        $query->where(function ($q) use ($value) {
                            $q->where('period_from', '<=', $this->input('period_to'))
                              ->where('period_to', '>=', $value);
                        });
                    }

                    if ($query->exists()) {
                        $fail('A statement request with this account number and period already exists.');
                    }
                }
            ],
        ];

        // If it's a period range, require period_to
        if ($this->input('period_to')) {
            $rules['period_to'] = [
                'required',
                'string',
                'regex:/^\d{6}$/', // YYYYMM format
                'gte:period_from' // period_to must be greater than or equal to period_from
            ];
        }

        return $rules;
    }

    /**
     * Get custom messages for validator errors.
     */
    public function messages(): array
    {
        return [
            'account_number.required' => 'Account number is required',
            'period_from.required' => 'Period is required',
            'period_from.regex' => 'Period must be in YYYYMM format',
            'period_to.required' => 'End period is required for period range',
            'period_to.regex' => 'End period must be in YYYYMM format',
            'period_to.gte' => 'End period must be after or equal to start period',
            'request_type.in' => 'Request type must be single_account, branch, or all_branches',
        ];
    }

    /**
     * Prepare the data for validation.
     */
    protected function prepareForValidation(): void
    {
        if ($this->has('period_from')) {
            // Convert to YYYYMM format
            $this->merge([
                'period_from' => substr($this->period_from, 0, 4) . substr($this->period_from, 5, 2),
            ]);
        }

        if ($this->has('period_to')) {
            // Convert to YYYYMM format
            $this->merge([
                'period_to' => substr($this->period_to, 0, 4) . substr($this->period_to, 5, 2),
            ]);

            // Only set is_period_range to true if period_to is different from period_from
            if ($this->period_to !== $this->period_from) {
                $this->merge([
                    'is_period_range' => true,
                ]);
            }
        }

        // Set default request_type if not provided
        if (!$this->has('request_type')) {
            $this->merge([
                'request_type' => 'single_account',
            ]);
        }
    }
}