import { z } from "zod";

export class TValidator {
  /**
   * Validate an empty value
   * @param {string} value - The value to validate
   * @param {string} fieldName - The name of the field for error message
   * @returns {Object} - Validation result object with success and optional error message
   */
  static validateEmptyValue(value: string, fieldName: string) {
    const schema = z.string().min(1, `${fieldName} cannot be empty`);
    const result = schema.safeParse(value);

    if (!result.success) {
      return {
        success: false,
        error: `${fieldName} cannot be empty`,
      };
    }

    return {
      success: true,
    };
  }

  /**
   * Validate an email address
   * @param {string} email - The email address to validate
   * @returns {Object} - Validation result object with success and optional error message
   */
  static validateEmail(email: string) {
    const emptyCheck = this.validateEmptyValue(email, "Email");
    if (!emptyCheck.success) return emptyCheck;

    const schema = z.string().email("Invalid email address");
    const result = schema.safeParse(email);

    if (!result.success) {
      return {
        success: false,
        error: "Invalid email address",
      };
    }

    return {
      success: true,
    };
  }

  /**
   * Validate a phone number for Indonesia
   * @param {string} phone - The phone number to validate
   * @returns {Object} - Validation result object with success and optional error message
   */
  static validatePhone(phone: string) {
    const emptyCheck = this.validateEmptyValue(phone, "Phone");
    if (!emptyCheck.success) return emptyCheck;

    // Regex for Indonesian phone numbers:
    // - Allows format starting with +62 or 0
    // - For +62 format: +62 followed by 8-12 digits
    // - For 0 format: 0 followed by 9-12 digits (usually starts with 08)
    // - Handles common mobile prefixes (8xx) and landline prefixes
    const schema = z
      .string()
      .regex(
        /^(?:\+62[0-9]{8,12}|0[0-9]{9,12})$/,
        "Invalid Indonesian phone number format"
      );
    const result = schema.safeParse(phone);

    if (!result.success) {
      return {
        success: false,
        error:
          "Invalid Indonesian phone number format. Use format +62xxxxxxxxxx or 08xxxxxxxxx",
      };
    }

    return {
      success: true,
    };
  }

}