import { StripeError } from "./index";

export interface ElementFactory {
    /**
     * Creates a new StripeJS element
     * @see https://stripe.com/docs/stripe-js/reference#elements-create
     * @param type - The type of element that should be created
     * @param options - Any options that should be used to con
     *
     * @example ```
     * const style = {
     *    base: {
     *      color: '#303238',
     *      fontSize: '16px',
     *      color: "#32325d",
     *      fontSmoothing: 'antialiased',
     *      '::placeholder': {
     *        color: '#ccc',
     *      },
     *    },
     *    invalid: {
     *      color: '#e5424d',
     *      ':focus': {
     *        color: '#303238',
     *        },
     *    },
     * };
     * const cardElement = elementCreator.create('card', {style: style})
     * ```
     *
     * @return The created element
     */
    create(
        type: ElementType,
        options: CardElementOptions | IBANElementOptions | IdealBankOptions | PaymentButtonOptions
    ): StripeElement;
}

export interface ElementCreatorOptions {
    /**
     * Fonts that should be used for styling the element
     * @see https://stripe.com/docs/stripe-js/reference#stripe-elements
     */
    fonts?: FontCSSElement[] | FontConfigElement[];

    /**
     * The translation that should be used for the element text
     * `auto` defaults to the browser language
     *
     * @default 'auto'
     */
    locale?: 'auto' | 'da' | 'de' | 'en' | 'es' | 'fi' | 'fr' | 'it' | 'ja' | 'no' | 'nl' | 'sv' | 'zh' | string;
}

export interface FontCSSElement {
    /**
     * A relative or absolute URL pointing to a CSS file with `@font-face` definitions
     * @example 'https://fonts.googleapis.com/css?family=Open+Sans'
     */
    cssSrc: string;
}

export interface FontConfigElement {
    /**
     * The name of the font family
     * @example 'Times New Roman'
     */
    family?: string;

    /**
     * A src value pointing to your custom font file.
     * @example
     * 'url(https://somewebsite.com/path/to/font.woff)'
     * 'url(path/to/font.woff)'
     */
    src?: string;

    /**
     * The style of the text
     * @default 'normal'
     */
    style?: 'normal' | 'italic' | 'oblique';

    /**
     * A unicode range for the font that should be used
     * @see https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/unicode-range
     */
    unicodeRange?: string;

    /**
     * The weight of the font
     * NOTE: This cannot be a number!
     */
    weight?: 'initial' | 'inherit' | 'bold' | 'bolder' | 'lighter' | 'normal' | 'revert' | 'unset';
}

// --- ELEMENT --- //
export interface StripeElement {
    /**
     * Mount the element to the DOM
     * @see https://stripe.com/docs/stripe-js/reference#element-mount
     *
     * @param element - A HTML DOM element or a CSS selector
     *
     * @example ```
     * <label for="card-element">Card</label>
     * <div id="card-element"></div>
     *
     * cardElement.mount('#card-element');
     * ```
     */
    mount(element: HTMLElement | string): void;

    /**
     * Watch for changes on the element
     * @see https://stripe.com/docs/stripe-js/reference#element-on
     *
     * @param event - What event to listen to
     * @param handler - The handler function that is called when the event fires
     */
    on(event: 'blur' | 'focus' | 'ready', handler: () => void): void;
    on(event: 'click', handler: (event: { preventDefault: () => void }) => void): void;
    on(event: 'change', handler: (event: OnChange) => void): void;

    /**
     * Blur the element
     * @see https://stripe.com/docs/stripe-js/reference#other-methods
     */
    blur(): void;

    /**
     * Clear the value of the element
     */
    clear(): void;

    /**
     * Removes the Element from the DOM and destroys it
     * NOTE: a destroyed element can not be re-activated or re-mounted to the DOM
     */
    destroy(): void;

    /**
     * Give focus to the element
     */
    focus(): void;

    /**
     * Unmounts the Element from the DOM
     * Call `element.mount()` to re-attach it to the DOM
     * @see mount
     */
    unmount(): void;

    /**
     * Updates the options the Element was initialized with
     * NOTE: Updates are merged into the existing configuration
     * @param options - The options that should be used to update the element
     */
    update(options: CardElementOptions | IBANElementOptions | IdealBankOptions | PaymentButtonOptions): void;
}

/**
 * The type of element that can be created by the ElementCreator
 * @see ElementCreator
 */
export type ElementType = 'card' | 'cardNumber' | 'cardExpiry' | 'cardCvc' | 'postalCode' | 'paymentRequestButton';

// --- ELEMENT EVENTS --- //
export interface OnChange {
    /**
     * The type of the Element that changed.
     */
    elementType: ElementType;

    /**
     * true if the value is empty
     */
    empty: boolean;

    /**
     * true if the value is well-formed and potentially complete
     */
    complete: boolean;

    /**
     * The current validation error if any
     */
    error: StripeError;

    /**
     * The value of the element
     * @see CardElementOptions.value for more information
     * NOTE: This is only filled is the element is of a Card type
     *
     * -----
     *
     * The selected bank. Can be one of the banks listed in the
     * @see https://stripe.com/docs/sources/ideal#optional-specifying-the-customers-bank
     * NOTE: This is also filled when the element is of IdealBank type
     */
    value?: any;

    /**
     * The type of card that was used
     * @example 'visa'
     * NOTE: This is only available when the element is of Card or Cardnumber type
     */
    brand?: string;

    /**
     * The country code of the entered IBAN
     * NOTE: This is only available when the element is of IBAN type
     */
    country?: string;

    /**
     * The financial institution that services the account whose IBAN was entered into the Element.
     * NOTE: This is only available when the element is of IBAN type
     */
    bankName: string;
}

// --- CARD ELEMENT --- //
export interface CardElementOptions extends BaseOptions {
    /**
     * A pre-filled value
     * NOTE: Sensitive card information (card number, CVC, and expiration date) cannot be pre-filled
     * @see placeholder
     *
     * @example {postalCode: '94110'}
     */
    value?: any;

    /**
     * Whether or not to hide the postal code
     * NOTE: If you are already collecting a full billing address or postal code elsewhere, set this to `true`
     * @default false
     */
    hidePostalCode?: boolean;

    /**
     * Appearance of the icon in the Element
     */
    iconStyle?: 'solid' | 'default';

    /**
     * A placeholder text
     * NOTE: This is only available for `cardNumber`, `cardExpiry` & `cardCvc` elements
     */
    placeholder?: string;
}

// --- IBAN ELEMENT --- //
export interface IBANElementOptions extends BaseOptions {
    /**
     * Specify the list of countries or country-groups whose IBANs you want to allow
     */
    supportedCountries?: string[];

    /**
     * Customize the country and format of the placeholder IBAN
     * @default 'DE"
     */
    placeholderCountry?: string;

    /**
     * Appearance of the icon in the Element
     */
    iconStyle?: 'solid' | 'default';
}

// --- IDEAL ELEMENT --- //
export interface IdealBankOptions extends BaseOptions {
    /**
     * A pre-filled value for the Element. Can be one of the banks listed in the
     * @see https://stripe.com/docs/sources/ideal#optional-specifying-the-customers-bank
     *
     * @example 'abn_amro'
     */
    value?: string;
}

// --- PAYMENT BUTTON ELEMENT --- //
export interface PaymentButtonOptions {
    paymentRequest: any;

    /**
     * Set custom class names on the container DOM element when the Stripe Element is in a
     * particular state.
     */
    classes?: {
        base?: string; /** @default StripeElement */
        complete?: string; /** @default StripeElement--complete */
        focus: string; /** @default StripeElement--focus */
        invalid: string; /** @default StripeElement--invalid */
    };

    style?: {
        base?: PaymentRequestButtonStyle;
        complete?: PaymentRequestButtonStyle;
        empty?: PaymentRequestButtonStyle;
        invalid?: PaymentRequestButtonStyle;
        paymentRequestButton?: PaymentRequestButtonStyle;
    };
}

export interface PaymentRequestButtonStyle {
    /**
     * The type of button that should be shown
     * @default 'default'
     */
    type?: 'default' | 'donate' | 'buy';

    /**
     * The theme of the button that should be used
     * @default 'dark'
     */
    theme?: 'dark' | 'light' | 'light-outline';

    /**
     * The height of the button
     * @example '25px'
     */
    height?: string;
}

// --- BASE OPTIONS FOR ELEMENTS --- //
/**
 * @deprecated Do not use this interface. This is only here to minimize code duplication
 */
export interface BaseOptions {
    /**
     * Set custom class names on the container DOM element when the Stripe Element is in a
     * particular state.
     */
    classes?: {
        base?: string; /** @default StripeElement */
        complete?: string; /** @default StripeElement--complete */
        empty?: string; /** @default StripeElement--empty */
        focus?: string; /** @default StripeElement--focus */
        invalid?: string; /** @default StripeElement--invalid */
        webkitAutofill?: string; /** @default StripeElement--webkit-autofill */
    };

    /**
     * Customize appearance using CSS properties
     */
    style?: {
        base?: StyleAttributes;
        complete?: StyleAttributes;
        empty?: StyleAttributes;
        invalid?: StyleAttributes;
    };

    /**
     * Whether or not the icon should be hidden
     * @default false
     */
    hideIcon?: boolean;

    /**
     * Whether or not the input is disabled
     * @default false
     */
    disabled?: boolean;
}

/**
 * Styling settings for a Stripe Element
 */
export interface StyleAttributes {
    color?: string;
    fontFamily?: string;
    fontSize?: string;
    fontSmoothing?: string;
    fontStyle?: string;
    fontVariant?: any;
    iconColor?: string;
    lineHeight?: string;
    letterSpacing?: string;

    /**
     * Align text inside the element
     * NOTE: Only available for the `cardNumber`, `cardExpiry`, and `cardCvc` Elements
     */
    textAlign?: string;
    '::-ms-clear'?: MSClearAttributes;

    /**
     * Add padding to the element
     * NOTE: Only available for the `idealBank` Element
     */
    padding?: string;

    textDecoration?: string;
    textShadow?: string;
    textTransform?: string;
    ':hover'?: StyleAttributes;
    ':focus'?: StyleAttributes;
    '::placeholder'?: StyleAttributes;
    '::selection'?: StyleAttributes;
    ':-webkit-autofill'?: StyleAttributes;
    ':disabled'?: StyleAttributes;
}

export interface MSClearAttributes extends StyleAttributes {
    display?: string;
}