// validationUtils.js

// Validation functions
const required = (value, requiredMessage, emojiNotAllowedMessage) => {
    let errors;
    if (!value) {
        errors = requiredMessage;
    } else {
        const emojiRegex =
            /[\u{1F600}-\u{1F64F}\u{1F300}-\u{1F5FF}\u{1F680}-\u{1F6FF}\u{1F700}-\u{1F77F}\u{1F780}-\u{1F7FF}\u{1F800}-\u{1F8FF}\u{1F900}-\u{1F9FF}\u{1FA00}-\u{1FA6F}\u{1FA70}-\u{1FAFF}\u{2600}-\u{26FF}\u{2700}-\u{27BF}\u{2300}-\u{23FF}\u{2B50}\u{1F004}-\u{1F0CF}\u{1F0A0}-\u{1F0A5}\u{1F170}-\u{1F251}]/gu;

        if (emojiRegex.test(value)) {
            errors = emojiNotAllowedMessage;
        }
    }
    return errors;
};

const postcode = (value, invalidPostcodeMessage) =>
    value &&
    !/^([A-Z][A-HJ-Y]?[0-9][A-Z0-9]? ?[0-9][A-Z]{2}|GIR ?0A{2})$/i.test(value)
        ? "Invalid postcode"
        : undefined;

// Function to parse the validation string
export const parseValidationString = (validationString) => {
    if (typeof validationString !== "string") {
        return []; // Return an empty array if it's not a string
    }

    // Remove square brackets and split by commas
    return validationString
        .replace(/[\[\]']+/g, "") // Remove square brackets
        .split(",") // Split by commas
        .map((rule) => rule.trim()); // Trim each validation rule
};

// Function to handle multiple validation rules
export const validateField = (
    value,
    validationString,
    requiredMessage,
    emojiNotAllowedMessage,
    invalidPostcodeMessage
) => {
    const validations = parseValidationString(validationString); // Parse the validation string
    let errors;

    console.log(typeof validations, validations);
    for (let validationRule of validations) {
        const validationFunc = validationFunctions[validationRule];
        if (validationFunc) {
            errors = validationFunc(
                value,
                requiredMessage,
                emojiNotAllowedMessage,
                invalidPostcodeMessage
            );
        }
        if (errors) break; // Exit if any validation fails
    }

    return errors;
};

// Map validation strings to actual validation functions
export const validationFunctions = {
    required,
    postcode,
    // Add other validation functions as needed
};