/*!
 * Jodit Editor (https://xdsoft.net/jodit/)
 * Licensed under GNU General Public License version 2 or later or a commercial license or MIT;
 * For GPL see LICENSE-GPL.txt in the project root for license information.
 * For MIT see LICENSE-MIT.txt in the project root for license information.
 * For commercial licenses see https://xdsoft.net/jodit/commercial/
 * Copyright (c) 2013-2019 Valeriy Chupurnov. All rights reserved. https://xdsoft.net
 */

import { Config } from '../Config';
import { debounce, throttle } from '../modules/helpers/async';
import { css } from '../modules/helpers/css';
import { IJodit, IPointBound } from '../types';

declare module '../Config' {
	interface Config {
		allowResizeX: boolean;
		allowResizeY: boolean;
	}
}

Config.prototype.allowResizeX = false;
Config.prototype.allowResizeY = true;

/**
 * Resize editor
 * @param {Jodit} editor
 */
export function size(editor: IJodit) {
	const setHeight = (height: number | string) => {
		css(editor.container, 'height', height);

		if (editor.options.saveHeightInStorage) {
			editor.storage.set('height', height);
		}
	};

	const setWidth = (width: number | string) =>
		css(editor.container, 'width', width);

	const setHeightWorkPlace = (height: number | string) =>
		css(editor.workplace, 'height', height);
	// const setWidthWorkPlace = (width: number | string) => css(editor.workplace, 'width', width);

	if (
		editor.options.height !== 'auto' &&
		(editor.options.allowResizeX || editor.options.allowResizeY)
	) {
		const
			handle = editor.create.div(
				'jodit_editor_resize',
				'<a tabindex="-1" href="javascript:void(0)"></a>'
			),
			start: IPointBound = {
				x: 0,
				y: 0,
				w: 0,
				h: 0
			};

		let isResized: boolean = false;

		editor.events
			.on(handle, 'mousedown touchstart', (e: MouseEvent) => {
				isResized = true;
				start.x = e.clientX;
				start.y = e.clientY;
				start.w = editor.container.offsetWidth;
				start.h = editor.container.offsetHeight;
				editor.lock();
				e.preventDefault();
			})
			.on(
				editor.ownerWindow,
				'mousemove touchmove',
				throttle((e: MouseEvent) => {
					if (isResized) {
						if (editor.options.allowResizeY) {
							setHeight(start.h + e.clientY - start.y);
						}

						if (editor.options.allowResizeX) {
							setWidth(start.w + e.clientX - start.x);
						}

						resizeWorkspaceImd();

						editor.events.fire('resize');
					}
				}, editor.defaultTimeout / 10)
			)
			.on(editor.ownerWindow, 'mouseup touchsend', () => {
				if (isResized) {
					isResized = false;
					editor.unlock();
				}
			})
			.on('afterInit', () => {
				editor.container.appendChild(handle);
			})
			.on('toggleFullSize', (fullsize: boolean) => {
				handle.style.display = fullsize ? 'none' : 'block';
			});
	}

	const getNotWorkHeight = (): number =>
		(editor.options.toolbar ? editor.toolbar.container.offsetHeight : 0) +
		(editor.statusbar ? editor.statusbar.container.offsetHeight : 0);

	const calcMinHeightWorkspace = () => {
		if (!editor.container || !editor.container.parentNode) {
			return;
		}

		const minHeight: number =
			(css(editor.container, 'minHeight') as number) - getNotWorkHeight();

		[editor.workplace, editor.iframe, editor.editor].map(elm => {
			const minHeightD: number =
				elm === editor.editor ? minHeight - 2 : minHeight; // borders
			elm && css(elm as HTMLElement, 'minHeight', minHeightD);
			editor.events.fire('setMinHeight', minHeightD);
		});
	};

	const resizeWorkspaceImd = () => {
		if (
			!editor ||
			editor.isDestructed ||
			!editor.options ||
			editor.options.inline
		) {
			return;
		}

		calcMinHeightWorkspace();

		if (
			editor.container &&
			(editor.options.height !== 'auto' || editor.isFullSize())
		) {
			setHeightWorkPlace(
				editor.container.offsetHeight - getNotWorkHeight()
			);
		}
	};

	const resizeWorkspace = debounce(resizeWorkspaceImd, editor.defaultTimeout);

	editor.events
		.on('toggleFullSize', (fullsize: boolean) => {
			if (!fullsize && editor.options.height === 'auto') {
				setHeightWorkPlace('auto');
				calcMinHeightWorkspace();
			}
		})
		.on(
			'afterInit',
			() => {
				if (!editor.options.inline) {
					css(editor.editor, {
						minHeight: '100%'
					});

					css(editor.container, {
						minHeight: editor.options.minHeight,
						minWidth: editor.options.minWidth,
						maxWidth: editor.options.maxWidth
					});
				}

				let height: string | number = editor.options.height;

				if (editor.options.saveHeightInStorage && height !== 'auto') {
					const localHeight: string | null = editor.storage.get(
						'height'
					);
					if (localHeight) {
						height = localHeight;
					}
				}

				if (!editor.options.inline) {
					setHeight(height);
					setWidth(editor.options.width);
				}

				resizeWorkspaceImd();
			},
			undefined,
			undefined,
			true
		)
		.on(window, 'load', resizeWorkspace)
		.on(
			'afterInit resize updateToolbar scroll afterResize',
			resizeWorkspace
		);
}