|string> */ public function rules(): array { $couponId = $this->route('coupon') ? $this->route('coupon')->id : null; return [ 'name' => 'required|string|max:255', 'type' => 'required|in:percentage,flat', 'minimum_spend' => 'nullable|numeric|min:0', 'maximum_spend' => 'nullable|numeric|min:0|gte:minimum_spend', 'discount_amount' => [ 'required', 'numeric', 'min:0', function ($attribute, $value, $fail) { if ($this->type === 'percentage' && $value > 99) { $fail('The discount amount cannot exceed 99% for percentage discounts.'); } } ], 'use_limit_per_coupon' => 'nullable|integer|min:1', 'use_limit_per_user' => 'nullable|integer|min:1', 'expiry_date' => 'nullable|date|after:today', 'code' => [ 'required_if:code_type,manual', 'string', 'max:50', Rule::unique('coupons', 'code')->ignore($couponId) ], 'code_type' => 'required|in:manual,auto', 'status' => 'boolean' ]; } /** * Get custom messages for validator errors. */ public function messages(): array { return [ 'name.required' => 'The coupon name is required.', 'type.required' => 'The discount type is required.', 'type.in' => 'The discount type must be either percentage or flat amount.', 'discount_amount.required' => 'The discount amount is required.', 'discount_amount.min' => 'The discount amount must be greater than 0.', 'maximum_spend.gte' => 'The maximum spend must be greater than or equal to minimum spend.', 'expiry_date.after' => 'The expiry date must be a future date.', 'code.required_if' => 'The coupon code is required when manual entry is selected.', 'code.unique' => 'This coupon code is already taken.', 'code_type.required' => 'Please select a code generation method.', ]; } }