533 lines
15 KiB
TypeScript
533 lines
15 KiB
TypeScript
// @ts-ignore
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const {$, doAfterLoad, footer, header, nav} = window.fwdekker;
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/**
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* Returns a number between `min` (inclusive) and `max` (inclusive).
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*
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* @param min the lower bound of permissible values
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* @param max the upper bound of permissible values
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*/
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function generateRandom(min: number, max: number) {
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return Math.floor(Math.random() * (max - min + 1) + min);
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}
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/**
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* An input that can be validated.
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*
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* In particular, the century, year, and day inputs of the Doomsday test.
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*/
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class ValidatableInput {
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/**
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* The input that is validatable.
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*/
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readonly input: HTMLInputElement
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/**
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* The label of which to update the text.
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*/
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readonly titleLabel: HTMLElement
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/**
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* The submission button that activates validation.
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*/
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readonly button: HTMLButtonElement
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/**
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* Constructs a new validatable input and registers event listeners.
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*
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* @param input the input that is validatable
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* @param titleLabel the label of which to update the text
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* @param button the submission button that activates validation
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*/
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constructor(input: HTMLInputElement, titleLabel: HTMLElement, button: HTMLButtonElement) {
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this.input = input;
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this.titleLabel = titleLabel;
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this.button = button;
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this.button.addEventListener("click", () => this.onSubmit());
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this.input.addEventListener("keydown", event => {
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if (event.key !== "Enter")
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return;
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this.onSubmit();
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event.preventDefault();
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});
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}
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/**
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* Handles the user submitting the input.
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*/
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onSubmit(): void {
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this.input.dataset["entered"] = "true";
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if (this.isValid(this.input.value)) {
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this.showSuccess();
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this.onValidInput();
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} else {
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this.showError();
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this.selectInput();
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this.onInvalidInput();
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}
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}
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/**
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* Returns `true` if and only if the input is valid.
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*
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* This method **must** be implemented by subclasses.
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*
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* @param value the value of the input to validate
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* @return `true` if and only if the input is valid
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*/
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isValid(value: string): boolean {
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throw new Error("Implement this method.");
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}
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/**
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* Runs when the user submits a valid input.
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*
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* This method **must** be implemented by subclasses.
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*/
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onValidInput(): void {
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throw new Error("Implement this method.");
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}
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/**
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* Runs when a user submits an invalid input.
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*
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* This method **must** be implemented by subclasses.
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*/
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onInvalidInput(): void {
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throw new Error("Implement this method.");
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}
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/**
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* Resets the input, title, and error message to their initial state, and removes the value from the input.
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*/
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reset(): void {
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this.input.value = "";
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this.input.dataset["entered"] = "false";
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this.showSuccess();
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this.updateTitle();
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this.titleLabel.classList.remove("success-message");
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this.button.classList.remove("success-box");
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}
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/**
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* Marks the input as invalid.
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*/
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showError(): void {
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this.input.setCustomValidity("Incorrect");
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this.titleLabel.classList.remove("success-message");
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this.titleLabel.classList.add("error-message");
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this.button.classList.remove("success-box");
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this.button.classList.add("error-box");
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}
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/**
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* Marks the input as valid.
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*/
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showSuccess(): void {
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this.input.setCustomValidity("");
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this.titleLabel.classList.remove("error-message");
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this.titleLabel.classList.add("success-message");
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this.button.classList.remove("error-box");
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this.button.classList.add("success-box");
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}
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/**
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* Updates the title label's contents.
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*
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* Does nothing by default. Implement this method to make it do something.
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*/
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updateTitle(): void {
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// Do nothing
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}
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/**
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* Focuses the input element.
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*/
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selectInput(): void {
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this.input.select();
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}
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}
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/**
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* A wrapper around a `<details>` element that persists the state in local storage.
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*/
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class ToggleableSection {
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/**
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* The name to identify this component with in persistent storage.
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*
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* @private
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*/
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private readonly name: string;
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/**
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* The element that can be toggled.
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*
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* @private
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*/
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private readonly details: HTMLDetailsElement;
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/**
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* Constructs a new `ToggleableSection`.
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*
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* @param name the name to identify this component with in persistent storage
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* @param details the element that can be toggled
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*/
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constructor(name: string, details: HTMLDetailsElement) {
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this.name = name;
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this.details = details;
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this.details.addEventListener("toggle", () => this.onToggle(this.isOpened()));
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this.loadToggle();
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}
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/**
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* Returns `true` if and only if the component is currently open.
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*
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* @return `true` if and only if the component is currently open.
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*/
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isOpened(): boolean {
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return this.details.open;
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}
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/**
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* Opens or closes the component.
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*
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* @param isOpened whether to open the component
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*/
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setOpened(isOpened: boolean): void {
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this.details.open = isOpened;
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}
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/**
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* This method is invoked whenever the component is toggled.
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*
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* @param isOpened the new state of the component
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*/
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onToggle(isOpened: boolean): void {
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this.storeToggle();
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}
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/**
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* Persists the state of this component.
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*
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* @private
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*/
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private storeToggle(): void {
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localStorage.setItem(`/tools/doomsday//toggle-${this.name}`, "" + this.isOpened());
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}
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/**
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* Reads the state of this component from persistent storage and applies it.
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*
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* @private
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*/
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private loadToggle(): void {
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const target = localStorage.getItem(`/tools/doomsday//toggle-${this.name}`);
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if (target === null) {
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this.setOpened(true);
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this.storeToggle();
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return;
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}
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this.setOpened(target === "true");
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}
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}
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/**
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* A wrapper around the good ol' `Date` class that provides a bunch of useful Doomsday-specific methods.
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*/
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class DoomsdayDate {
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/**
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* The underlying date.
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*/
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readonly date: Date;
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/**
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* Wraps a `DoomsdayDate` around the given date.
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*
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* @param date the date to be wrapped
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*/
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constructor(date: Date) {
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this.date = date;
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}
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/**
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* Returns the number of this `DoomsdayDate`'s century.
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*
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* @return the number of this `DoomsdayDate`'s century
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*/
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getCentury(): number {
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return Math.floor(this.date.getFullYear() / 100);
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}
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/**
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* Returns the day of the week of the anchor of this `DoomsdayDate`'s century.
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*
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* @return the day of the week of the anchor of this `DoomsdayDate`'s century
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*/
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getCenturyAnchorString(): string {
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const centuryAnchorNumber = (5 * (this.getCentury() % 4)) % 7 + 2;
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return DoomsdayDate.getWeekDayOf(centuryAnchorNumber);
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};
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/**
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* Returns the day of the week of the anchor day of this `DoomsdayDate`'s year.
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*
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* @return the day of the week of the anchor day of this `DoomsdayDate`'s year
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*/
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getYearAnchorString(): string {
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const anchorDate = new Date(this.date);
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anchorDate.setDate(4); // 4th
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anchorDate.setMonth(3); // April
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anchorDate.setHours(0); // midnight local time
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return DoomsdayDate.getWeekDayOf(anchorDate);
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};
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/**
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* Returns the day of the week of this `DoomsdayDate`.
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*
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* @return the day of the week of this `DoomsdayDate`
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*/
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getWeekdayString(): string {
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return DoomsdayDate.getWeekDayOf(this.date);
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};
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/**
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* Returns the week day of [date].
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*
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* @param date the date to get the week day of; if it is a `number`, then 0 corresponds to Sunday
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* @return the name of the week day corresponding to [date]
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*/
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static getWeekDayOf(date: Date|number): string {
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if (date instanceof Date) {
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return date.toLocaleString("en-US", {weekday: "long"});
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} else {
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switch (date % 7) {
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case 0:
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return "Sunday";
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case 1:
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return "Monday";
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case 2:
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return "Tuesday";
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case 3:
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return "Wednesday";
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case 4:
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return "Thursday";
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case 5:
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return "Friday";
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case 6:
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return "Saturday";
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default:
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throw new Error(`Unexpected weekday number '${date}'.`);
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}
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}
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};
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/**
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* Returns the day of the week corresponding to `dayString`, or an empty string if no day was recognized.
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*
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* This is a convenience method for interpreting (incomplete) user inputs.
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*
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* @param dayString the day of the week to expand
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* @return the day of the week corresponding to `dayString`, or an empty string if no day was recognized
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*/
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static expandDayString(dayString: string): string {
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dayString = dayString.toLowerCase();
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if (dayString.startsWith("m"))
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return "Monday";
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else if (dayString.startsWith("tu"))
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return "Tuesday";
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else if (dayString.startsWith("w"))
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return "Wednesday";
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else if (dayString.startsWith("th"))
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return "Thursday";
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else if (dayString.startsWith("f"))
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return "Friday";
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else if (dayString.startsWith("sa"))
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return "Saturday";
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else if (dayString.startsWith("su"))
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return "Sunday";
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else
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return "";
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}
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/**
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* Returns a random date in the range `0001-01-01` (inclusive) to `9999-12-31` (inclusive), wrapped inside a
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* `DoomsdayDate` object.
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*
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* @return {DoomsdayDate} a random date
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*/
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static random() {
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// TODO Give custom date range to this method
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const minDate = new Date("0001-01-01").getTime() / 86400000;
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const maxDate = new Date("9999-12-31").getTime() / 86400000;
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return new DoomsdayDate(new Date(generateRandom(minDate, maxDate) * 86400000));
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}
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}
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doAfterLoad(() => {
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// Initialize template
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$("#nav").appendChild(nav("/Tools/Doomsday/"));
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$("#header").appendChild(header({
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title: "Doomsday",
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description: `
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Test your mastery of \
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<a href="https://en.wikipedia.org/wiki/Doomsday_rule">⎋ Conway's Doomsday rule</a>
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`
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}));
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$("#footer").appendChild(footer({
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vcsURL: "https://git.fwdekker.com/tools/doomsday/",
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version: "v%%VERSION_NUMBER%%"
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}));
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$("main").classList.remove("hidden");
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// Initialize quiz
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let quizDate: DoomsdayDate;
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const centuryDetails = new class extends ToggleableSection {
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onToggle(isOpened: boolean): void {
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super.onToggle(isOpened);
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if (isOpened) centuryInput.selectInput();
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centuryInput.updateTitle();
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}
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}("century", $("#century-details"));
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const yearDetails = new class extends ToggleableSection {
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onToggle(isOpened: boolean): void {
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super.onToggle(isOpened);
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if (isOpened) yearInput.selectInput();
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yearInput.updateTitle();
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}
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}("year", $("#year-details"));
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const centuryInput = new class extends ValidatableInput {
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isValid(value: string): boolean {
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console.log("# Validate century");
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console.log(`Input: ${value}`);
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console.log(`Expanded: ${DoomsdayDate.expandDayString(value)}`);
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console.log(`Expected: ${quizDate.getCenturyAnchorString()}`);
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return DoomsdayDate.expandDayString(value) === quizDate.getCenturyAnchorString();
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}
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onValidInput(): void {
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this.input.value = DoomsdayDate.expandDayString(this.input.value);
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if (yearDetails.isOpened())
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yearInput.selectInput();
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else
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dayInput.selectInput();
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}
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onInvalidInput() {
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// Do nothing
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}
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updateTitle() {
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if (centuryDetails.isOpened())
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this.titleLabel.innerText = `Anchor day of century starting in ${quizDate.getCentury() * 100}?`;
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else
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this.titleLabel.innerText = `Century`;
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}
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}($("#century-input"), $("#century-title-label"), $("#century-submit"));
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const yearInput = new class extends ValidatableInput {
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isValid(value: string): boolean {
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console.log("# Validate year");
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console.log(`Input: ${value}`);
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console.log(`Expanded: ${DoomsdayDate.expandDayString(value)}`);
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console.log(`Expected: ${quizDate.getYearAnchorString()}`);
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return DoomsdayDate.expandDayString(value) === quizDate.getYearAnchorString();
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}
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onValidInput() {
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this.input.value = DoomsdayDate.expandDayString(this.input.value);
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dayInput.selectInput();
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}
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onInvalidInput() {
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// Do nothing
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}
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updateTitle() {
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if (yearDetails.isOpened())
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this.titleLabel.innerText = `Doomsday of year ${quizDate.date.getFullYear()}?`;
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else
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this.titleLabel.innerText = `Year`;
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}
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}($("#year-input"), $("#year-title-label"), $("#year-submit"));
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const dayInput = new class extends ValidatableInput {
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isValid(value: string): boolean {
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console.log("# Validate day");
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console.log(`Input: ${value}`);
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console.log(`Expanded: ${DoomsdayDate.expandDayString(value)}`);
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console.log(`Expected: ${quizDate.getWeekdayString()}`);
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return DoomsdayDate.expandDayString(value) === quizDate.getWeekdayString();
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}
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onValidInput() {
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this.input.value = DoomsdayDate.expandDayString(this.input.value);
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resetButton.focus();
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}
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onInvalidInput() {
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// Do nothing
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}
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updateTitle() {
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this.titleLabel.innerText = `Weekday of ${quizDate.date.toISOString().substring(0, 10)}?`;
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}
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}($("#day-input"), $("#day-title-label"), $("#day-submit"));
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const resetButton = $("#reset-button");
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resetButton.addEventListener("click", () => {
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console.log(" ");
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console.log(" ");
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reloadQuiz();
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});
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/**
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* Generates a new date for the quiz and resets the inputs to reflect this.
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*/
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function reloadQuiz() {
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quizDate = DoomsdayDate.random();
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console.log("# Reset");
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console.log(`New date: ${quizDate.date.toISOString().substring(0, 10)}`);
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console.log(` ${quizDate.date}`);
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console.log(`Century#: ${quizDate.getCentury()}`);
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console.log(`Century: ${quizDate.getCenturyAnchorString()}`);
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console.log(`Year: ${quizDate.getYearAnchorString()}`);
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console.log(`Day: ${quizDate.getWeekdayString()}`);
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centuryInput.reset();
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yearInput.reset();
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dayInput.reset();
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if (centuryDetails.isOpened())
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centuryInput.selectInput();
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else if (yearDetails.isOpened())
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yearInput.selectInput();
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else
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dayInput.selectInput();
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}
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// Let the fun begin
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reloadQuiz();
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});
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