/**
 * @license MIT
 *
 * This contains the type declarations for the xterm.js library. Note that
 * some interfaces differ between this file and the actual implementation in
 * src/, that's because this file declares the *public* API which is intended
 * to be stable and consumed by external programs.
 */

declare module 'xterm' {
	/**
	 * An object containing start up options for the terminal.
	 */
	export interface ITerminalOptions {
		/**
		 * A data uri of the sound to use for the bell (needs bellStyle = 'sound').
		 */
		bellSound?: string;

		/**
		 * The type of the bell notification the terminal will use.
		 */
		bellStyle?: 'none' /*| 'visual'*/ | 'sound' /*| 'both'*/;

		/**
		 * The number of columns in the terminal.
		 */
		cols?: number;

		/**
		 * Whether the cursor blinks.
		 */
		cursorBlink?: boolean;

		/**
		 * The style of the cursor.
		 */
		cursorStyle?: 'block' | 'underline' | 'bar';

		/**
		 * Whether input should be disabled.
		 */
		disableStdin?: boolean;

		/**
		 * Whether to enable the rendering of bold text.
		 */
		enableBold?: boolean;

		/**
		 * The font size used to render text.
		 */
		fontSize?: number;

		/**
		 * The font family used to render text.
		 */
		fontFamily?: string;

		/**
		 * The spacing in whole pixels between characters..
		 */
		letterSpacing?: number;

		/**
		 * The line height used to render text.
		 */
		lineHeight?: number;

		/**
		 * The number of rows in the terminal.
		 */
		rows?: number;

		/**
		 * The amount of scrollback in the terminal. Scrollback is the amount of rows
		 * that are retained when lines are scrolled beyond the initial viewport.
		 */
		scrollback?: number;

		/**
		 * The size of tab stops in the terminal.
		 */
		tabStopWidth?: number;

		/**
		 * The color theme of the terminal.
		 */
		theme?: ITheme;
	}

	/**
	 * Contains colors to theme the terminal with.
	 */
	export interface ITheme {
		/** The default foreground color */
		foreground?: string,
		/** The default background color */
		background?: string,
		/** The cursor color */
		cursor?: string,
		/** The accent color of the cursor (used as the foreground color for a block cursor) */
		cursorAccent?: string,
		/** The selection color (can be transparent) */
		selection?: string,
		/** ANSI black (eg. `\x1b[30m`) */
		black?: string,
		/** ANSI red (eg. `\x1b[31m`) */
		red?: string,
		/** ANSI green (eg. `\x1b[32m`) */
		green?: string,
		/** ANSI yellow (eg. `\x1b[33m`) */
		yellow?: string,
		/** ANSI blue (eg. `\x1b[34m`) */
		blue?: string,
		/** ANSI magenta (eg. `\x1b[35m`) */
		magenta?: string,
		/** ANSI cyan (eg. `\x1b[36m`) */
		cyan?: string,
		/** ANSI white (eg. `\x1b[37m`) */
		white?: string,
		/** ANSI bright black (eg. `\x1b[1;30m`) */
		brightBlack?: string,
		/** ANSI bright red (eg. `\x1b[1;31m`) */
		brightRed?: string,
		/** ANSI bright green (eg. `\x1b[1;32m`) */
		brightGreen?: string,
		/** ANSI bright yellow (eg. `\x1b[1;33m`) */
		brightYellow?: string,
		/** ANSI bright blue (eg. `\x1b[1;34m`) */
		brightBlue?: string,
		/** ANSI bright magenta (eg. `\x1b[1;35m`) */
		brightMagenta?: string,
		/** ANSI bright cyan (eg. `\x1b[1;36m`) */
		brightCyan?: string,
		/** ANSI bright white (eg. `\x1b[1;37m`) */
		brightWhite?: string
	}

	/**
	 * An object containing options for a link matcher.
	 */
	export interface ILinkMatcherOptions {
		/**
		 * The index of the link from the regex.match(text) call. This defaults to 0
		 * (for regular expressions without capture groups).
		 */
		matchIndex?: number;

		/**
		 * A callback that validates an individual link, returning true if valid and
		 * false if invalid.
		 */
		validationCallback?: (uri: string, callback: (isValid: boolean) => void) => void;

		/**
		 * A callback that fires when the mouse hovers over a link for a moment.
		 */
		tooltipCallback?: (event: MouseEvent, uri: string) => boolean | void;

		/**
		 * A callback that fires when the mouse leaves a link. Note that this can
		 * happen even when tooltipCallback hasn't fired for the link yet.
		 */
		leaveCallback?: (event: MouseEvent, uri: string) => boolean | void;

		/**
		 * The priority of the link matcher, this defines the order in which the link
		 * matcher is evaluated relative to others, from highest to lowest. The
		 * default value is 0.
		 */
		priority?: number;
	}

	/**
	 * The class that represents an xterm.js terminal.
	 */
	export class Terminal {
		/**
		 * The element containing the terminal.
		 */
		element: HTMLElement;

		/**
		 * The textarea that accepts input for the terminal.
		 */
		textarea: HTMLTextAreaElement;

		/**
		 * The number of rows in the terminal's viewport.
		 */
		rows: number;

		/**
		 * The number of columns in the terminal's viewport.
		 */
		cols: number;

		/**
		 * Creates a new `Terminal` object.
		 *
		 * @param options An object containing a set of options.
		 */
		constructor(options?: ITerminalOptions);

		/**
		 * Unfocus the terminal.
		 */
		blur(): void;

		/**
		 * Focus the terminal.
		 */
		focus(): void;

		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'blur' | 'focus' | 'linefeed' | 'selection', listener: () => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'data', listener: (data?: string) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'key', listener: (key?: string, event?: KeyboardEvent) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'keypress' | 'keydown', listener: (event?: KeyboardEvent) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'refresh', listener: (data?: {start: number, end: number}) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'resize', listener: (data?: {cols: number, rows: number}) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'scroll', listener: (ydisp?: number) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: 'title', listener: (title?: string) => void): void;
		/**
		 * Registers an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		on(type: string, listener: (...args: any[]) => void): void;

		/**
		 * Deregisters an event listener.
		 * @param type The type of the event.
		 * @param listener The listener.
		 */
		off(type: 'blur' | 'focus' | 'linefeed' | 'selection' | 'data' | 'key' | 'keypress' | 'keydown' | 'refresh' | 'resize' | 'scroll' | 'title' | string, listener: (...args: any[]) => void): void;

		/**
		 * Resizes the terminal.
		 * @param x The number of columns to resize to.
		 * @param y The number of rows to resize to.
		 */
		resize(columns: number, rows: number): void;

		/**
		 * Writes text to the terminal, followed by a break line character (\n).
		 * @param data The text to write to the terminal.
		 */
		writeln(data: string): void;

		/**
		 * Opens the terminal within an element.
		 * @param parent The element to create the terminal within. This element
		 * must be visible (have dimensions) when `open` is called as several DOM-
		 * based measurements need to be performed when this function is called.
		 */
		open(parent: HTMLElement): void;

		/**
		 * Attaches a custom key event handler which is run before keys are
		 * processed, giving consumers of xterm.js ultimate control as to what keys
		 * should be processed by the terminal and what keys should not.
		 * @param customKeyEventHandler The custom KeyboardEvent handler to attach.
		 * This is a function that takes a KeyboardEvent, allowing consumers to stop
		 * propogation and/or prevent the default action. The function returns
		 * whether the event should be processed by xterm.js.
		 */
		attachCustomKeyEventHandler(customKeyEventHandler: (event: KeyboardEvent) => boolean): void;

		/**
		 * (EXPERIMENTAL) Registers a link matcher, allowing custom link patterns to
		 * be matched and handled.
		 * @param regex The regular expression to search for, specifically this
		 * searches the textContent of the rows. You will want to use \s to match a
		 * space ' ' character for example.
		 * @param handler The callback when the link is called.
		 * @param options Options for the link matcher.
		 * @return The ID of the new matcher, this can be used to deregister.
		 */
		registerLinkMatcher(regex: RegExp, handler: (event: MouseEvent, uri: string) => boolean | void, options?: ILinkMatcherOptions): number;

		/**
		 * (EXPERIMENTAL) Deregisters a link matcher if it has been registered.
		 * @param matcherId The link matcher's ID (returned after register)
		 */
		deregisterLinkMatcher(matcherId: number): void;

		/**
		 * Gets whether the terminal has an active selection.
		 */
		hasSelection(): boolean;

		/**
		 * Gets the terminal's current selection, this is useful for implementing
		 * copy behavior outside of xterm.js.
		 */
		getSelection(): string;

		/**
		 * Clears the current terminal selection.
		 */
		clearSelection(): void;

		/**
		 * Selects all text within the terminal.
		 */
		selectAll(): void;

		// /**
		//  * Find the next instance of the term, then scroll to and select it. If it
		//  * doesn't exist, do nothing.
		//  * @param term Tne search term.
		//  * @return Whether a result was found.
		//  */
		// findNext(term: string): boolean;

		// /**
		//  * Find the previous instance of the term, then scroll to and select it. If it
		//  * doesn't exist, do nothing.
		//  * @param term Tne search term.
		//  * @return Whether a result was found.
		//  */
		// findPrevious(term: string): boolean;

		/**
		 * Destroys the terminal and detaches it from the DOM.
		 */
		destroy(): void;

		/**
		 * Scroll the display of the terminal
		 * @param amount The number of lines to scroll down (negative scroll up).
		 */
		scrollLines(amount: number): void;

		/**
		 * Scroll the display of the terminal by a number of pages.
		 * @param pageCount The number of pages to scroll (negative scrolls up).
		 */
		scrollPages(pageCount: number): void;

		/**
		 * Scrolls the display of the terminal to the top.
		 */
		scrollToTop(): void;

		/**
		 * Scrolls the display of the terminal to the bottom.
		 */
		scrollToBottom(): void;

		/**
		 * Clear the entire buffer, making the prompt line the new first line.
		 */
		clear(): void;

		/**
		 * Writes text to the terminal.
		 * @param data The text to write to the terminal.
		 */
		write(data: string): void;

		/**
		 * Retrieves an option's value from the terminal.
		 * @param key The option key.
		 */
		getOption(key: 'bellSound' | 'bellStyle' | 'cursorStyle' | 'fontFamily' | 'termName'): string;
		/**
		 * Retrieves an option's value from the terminal.
		 * @param key The option key.
		 */
		getOption(key: 'cancelEvents' | 'convertEol' | 'cursorBlink' | 'debug' | 'disableStdin' | 'enableBold' | 'popOnBell' | 'screenKeys' | 'useFlowControl' | 'visualBell'): boolean;
		/**
		 * Retrieves an option's value from the terminal.
		 * @param key The option key.
		 */
		getOption(key: 'colors'): string[];
		/**
		 * Retrieves an option's value from the terminal.
		 * @param key The option key.
		 */
		getOption(key: 'cols' | 'fontSize' | 'letterSpacing' | 'lineHeight' | 'rows' | 'tabStopWidth' | 'scrollback'): number;
		/**
		 * Retrieves an option's value from the terminal.
		 * @param key The option key.
		 */
		getOption(key: 'handler'): (data: string) => void;
		/**
		 * Retrieves an option's value from the terminal.
		 * @param key The option key.
		 */
		getOption(key: string): any;

		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'fontFamily' | 'termName' | 'bellSound', value: string): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'bellStyle', value: null | 'none' | 'visual' | 'sound' | 'both'): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'cursorStyle', value: null | 'block' | 'underline' | 'bar'): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'cancelEvents' | 'convertEol' | 'cursorBlink' | 'debug' | 'disableStdin' | 'enableBold' | 'popOnBell' | 'screenKeys' | 'useFlowControl' | 'visualBell', value: boolean): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'colors', value: string[]): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'fontSize' | 'letterSpacing' | 'lineHeight' | 'tabStopWidth' | 'scrollback', value: number): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'handler', value: (data: string) => void): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: 'theme', value: ITheme): void;
		/**
		 * Sets an option on the terminal.
		 * @param key The option key.
		 * @param value The option value.
		 */
		setOption(key: string, value: any): void;

		/**
		 * Tells the renderer to refresh terminal content between two rows
		 * (inclusive) at the next opportunity.
		 * @param start The row to start from (between 0 and this.rows - 1).
		 * @param end The row to end at (between start and this.rows - 1).
		 */
		refresh(start: number, end: number): void;

		/**
		 * Perform a full reset (RIS, aka '\x1bc').
		 */
		reset(): void

		/**
		 * Applies an addon to the Terminal prototype, making it available to all
		 * newly created Terminals.
		 * @param addon The addon to apply.
		 */
		static applyAddon(addon: any): void;



		// Modifications to official .d.ts below

		buffer: {
			/**
			 * The viewport position.
			 */
			ydisp: number;
		};

		/**
		 * Emit an event on the terminal.
		 */
		emit(type: string, data: any): void;

		/**
		 * Find the next instance of the term, then scroll to and select it. If it
		 * doesn't exist, do nothing.
		 * @param term Tne search term.
		 * @return Whether a result was found.
		 */
		findNext(term: string): boolean;

		/**
		 * Find the previous instance of the term, then scroll to and select it. If it
		 * doesn't exist, do nothing.
		 * @param term Tne search term.
		 * @return Whether a result was found.
		 */
		findPrevious(term: string): boolean;

		winptyCompatInit(): void;
	}
}