import Validator from 'sosise-core/build/Validator/Validator';
import ValidationException from 'sosise-core/build/Exceptions/Validation/ValidationException';

enum ItemType {
    AVAILABLE = 'available',
    NOT_AVAILABLE = 'not-available',
}

/**
 * For more information, refer to: https://sosise.github.io/sosise-docs/#/documentation/unifiers
 */
export default class %name% {

    private params: any;
    public age: number;
    public confirmation: 'yes' | 'no';
    public items: {
        id: number;
        title: string | null;
        availability?: ItemType
    }[] = [];

    /**
     * Constructor
     */
    constructor(params: any) {
        // Remember incoming params
        this.params = params;

        // Validate, await is important otherwise we could not catch the exception
        this.validate();

        // Map data
        this.map();
    }

    /**
     * Request data validation
     */
    private validate() {
        // Create validator
        const validator = new Validator(this.params);

        // Validate
        validator
            .field('age')
            .required()
            .shouldBeNumber()
            .min(18);

        validator
            .field('confirmation')
            .required()
            .inList(['yes', 'no']);

        validator
            .field('items')
            .required()
            .shouldBeArray()
            .min(1)
            .validateArrayOfObjects(childValidator => {
                childValidator
                    .field('id')
                    .required()
                    .shouldBeNumber();

                childValidator
                    .field('title')
                    .required()
                    .shouldBeString();

                childValidator
                    .field('availability')
                    .sometimes()
                    .enum(ItemType);
            });

        // If validation fails, throw an exception
        if (validator.fails()) {
            throw new ValidationException('Validation exception', validator.errors);
        }
    }

    /**
     * Request data mapping
     */
    private map() {
        this.age = this.params.age;
        this.confirmation = this.params.confirmation;
        this.items = this.params.items;
    }
}