validator-example.nools

define User {

    constructor: function(options){
        this.id = options.id;
        this.firstName = options.firstName;
        this.lastName = options.lastName;
        this.dob = options.dob;
        this.email = options.email;
    },

    toString : function(){
        return `User(id: ${this.id}, firstName: ${this.firstName}, lastName: ${this.lastName}, dob: ${this.dob ? this.dob.toISOString() : null}, email: ${this.email})`;
    }
}

define ValidationError {
    constructor: function(user, err){
        this.user = user;
        this.error = err;
    }
}

function isEmailAddress(email){
    return /^(?:[\w\!\#\$\%\&\'\*\+\-\/\=\?\^\`\{\|\}\~]+\.)*[\w\!\#\$\%\&\'\*\+\-\/\=\?\^\`\{\|\}\~]+@(?:(?:(?:[a-zA-Z0-9](?:[a-zA-Z0-9\-](?!\.)){0,61}[a-zA-Z0-9]?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9\-](?!$)){0,61}[a-zA-Z0-9]?)|(?:\[(?:(?:[01]?\d{1,2}|2[0-4]\d|25[0-5])\.){3}(?:[01]?\d{1,2}|2[0-4]\d|25[0-5])\]))$/.test(email);
}

rule 'Check First Name Required' {
    when {
        u : User !u.firstName;
    }
    then {
        emit('validation-error', new ValidationError(u, 'First name is required'));
    }
}

rule 'Check First Name No Numbers' {
    when {
        u : User (isString(u.firstName) and u.firstName like /[0-9]/);
    }
    then {
        emit('validation-error', new ValidationError(u, 'First name is must not contain numbers'));
    }
}

rule 'Check First Name Length' {
    when {
        u : User (isString(u.firstName) and u.firstName.length gt 10);
    }
    then {
        emit('validation-error', new ValidationError(u, 'First name cannot be longer than 10 characters'));
    }
}


rule 'Check Last Name Required' {
    when {
        u : User !u.lastName;
    }
    then {
        emit('validation-error', new ValidationError(u, 'Last name is required'));
    }
}

rule 'Check Last Name No Numbers' {
    when {
        u : User (isString(u.lastName) and u.lastName like /[0-9]/);
    }
    then {
        emit('validation-error', new ValidationError(u, 'Last name is must not contain numbers'));
    }
}

rule 'Check Last Name Length' {
    when {
        u : User (isString(u.lastName) and u.lastName.length gte 10);
    }
    then {
        emit('validation-error', new ValidationError(u, 'Last name cannot be longer than 10 characters'));
    }
}


rule 'Check Date Of Birth Required' {
    when {
        u : User isDate(u.dob) == false;
    }
    then {
        emit('validation-error', new ValidationError(u, 'Date of birth is required'));
    }
}

rule 'Check Date Of Birth Age To Young' {
    when {
        u : User isDate(u.dob) and u.dob gte yearsAgo(18);
    }
    then {
        emit('validation-error', new ValidationError(u, 'Date Of Birth must be >= 18 years ago'));
    }
}

rule 'Check Dob Age To Old' {
    when {
        u : User isDate(u.dob) and u.dob lte yearsAgo(100);
    }
    then {
        emit('validation-error', new ValidationError(u, 'You cannot be older than 100 to use this app'));
    }
}

rule 'Check Email Address' {
    when {
        u : User !isEmailAddress(u.email);
    }
    then {
        emit('validation-error', new ValidationError(u, 'Invalid email address'));
    }
}

rule 'Check Email Unique' {
    when {
        m1 : User isString(m1.email) {id:m1Id, email:m1Email};
        m2 : User isString(m2.email) and m1Id neq m2.id and m2.email eq m1Email;
    }
    then {
        emit('validation-error', new ValidationError(m2, 'Email is not unqiue'));
    }
}