/* Copyright (c) 2015-present, salesforce.com, inc. All rights reserved */
/* Licensed under BSD 3-Clause - see LICENSE.txt or git.io/sfdc-license */

// # Timepicker Component

// ## Dependencies

// ### React
import React from 'react';

import PropTypes from 'prop-types';

// ### isDate
import isDate from 'lodash.isdate';

// This component's `checkProps` which issues warnings to developers about properties when in development mode (similar to React's built in development tools)
import checkProps from './check-props';

// ### Dropdown
import InputIcon from '../icon/input-icon';
import MenuDropdown from '../menu-dropdown';
import TimepickerDropdownTrigger from './private/dropdown-trigger';

// ## Constants
import { TIME_PICKER } from '../../utilities/constants';

import componentDoc from './docs.json';

const getOptions = ({ props }) => {
	const baseDate = new Date();
	const options = [];

	baseDate.setHours(0);
	baseDate.setMinutes(0);
	baseDate.setSeconds(0);
	baseDate.setMilliseconds(0);

	const curDate = new Date(baseDate);

	while (baseDate.getDate() === curDate.getDate()) {
		const formatted = props.formatter(curDate);

		options.push({
			label: formatted,
			value: new Date(curDate),
		});

		curDate.setMinutes(curDate.getMinutes() + props.stepInMinutes);
	}

	return options;
};

/**
 *  Component description.
 */
class Timepicker extends React.Component {
	// ### Display Name
	// Always use the canonical component name as the React display name.
	static displayName = TIME_PICKER;

	// ### Prop Types
	static propTypes = {
		/**
		 * If true, constrains the menu to the scroll parent. See `Dropdown`.
		 */
		constrainToScrollParent: PropTypes.bool,
		/**
		 * Disables the input and prevents editing the contents.
		 */
		disabled: PropTypes.bool,
		/**
		 * Time formatting function
		 */
		formatter: PropTypes.func,
		/**
		 * Sets the dialog width to the width of the target. Menus attached to `input` typically follow this UX pattern.
		 */
		inheritTargetWidth: PropTypes.bool,
		/**
		 * This label appears above the input.
		 */
		label: PropTypes.string,
		/**
		 * Custom element that overrides the default Menu Item component.
		 */
		listItemRenderer: PropTypes.func,
		/**
		 * Please select one of the following:
		 * * `absolute` - (default) The dialog will use `position: absolute` and style attributes to position itself. This allows inverted placement or flipping of the dialog.
		 * * `overflowBoundaryElement` - The dialog will overflow scrolling parents. Use on elements that are aligned to the left or right of their target and don't care about the target being within a scrolling parent. Typically this is a popover or tooltip. Dropdown menus can usually open up and down if no room exists. In order to achieve this a portal element will be created and attached to `body`. This element will render into that detached render tree.
		 * * `relative` - No styling or portals will be used. Menus will be positioned relative to their triggers. This is a great choice for HTML snapshot testing.
		 */
		menuPosition: PropTypes.oneOf([
			'absolute',
			'overflowBoundaryElement',
			'relative',
		]),
		/**
		 * Receives the props `(dateValue, stringValue)`
		 */
		onDateChange: PropTypes.func,
		/**
		 * Parsing date string into Date
		 */
		parser: PropTypes.func,
		/**
		 * Text that will appear in an empty input.
		 */
		placeholder: PropTypes.string,
		/**
		 * If true, adds asterisk next to input label to indicate it is a required field.
		 */
		required: PropTypes.bool,
		/**
		 * Frequency of options
		 */
		stepInMinutes: PropTypes.number,
		/**
		 * Value for input that is parsed to create an internal state in the `date` format.
		 */
		strValue: PropTypes.string,
		/**
		 * Instance an internal state in the `date` format.
		 */
		value: PropTypes.instanceOf(Date),
	};

	static defaultProps = {
		formatter(date) {
			if (date) {
				return date.toLocaleTimeString(navigator.language, {
					hour: '2-digit',
					minute: '2-digit',
				});
			}

			return null;
		},
		parser(timeStr) {
			const date = new Date();
			const dateStr = date.toLocaleString(navigator.language, {
				year: 'numeric',
				month: 'numeric',
				day: 'numeric',
			});
			return new Date(`${dateStr} ${timeStr}`);
		},
		menuPosition: 'absolute',
		placeholder: 'Pick Time',
		value: null,
		stepInMinutes: 30,
	};

	state = {
		value: this.props.value,
		strValue: this.props.strValue,
		options: getOptions({ props: this.props }),
	};

	componentWillMount() {
		// `checkProps` issues warnings to developers about properties (similar to React's built in development tools)
		checkProps(TIME_PICKER, this.props, componentDoc);
	}

	componentWillReceiveProps(nextProps) {
		if (nextProps.value && this.props.value) {
			const currentTime = this.props.value.getTime();
			const nextTime = nextProps.value.getTime();

			if (currentTime !== nextTime) {
				this.setState({
					value: nextProps.value,
					strValue: this.props.formatter(nextProps.value),
				});
			}
		}
	}

	parseDate = (strValue) => {
		const newDate = this.props.parser(strValue);

		if (isDate(newDate)) {
			if (!isNaN(newDate.getTime())) {
				return newDate;
			}
		}

		return new Date();
	};

	handleChange = (date, strValue) => {
		this.setState({
			value: date,
			strValue,
		});

		if (this.props.onDateChange) {
			this.props.onDateChange(date, strValue);
		}
	};

	handleSelect = (val) => {
		if (val && val.value) {
			this.handleChange(val.value, val.label);
		}
	};

	handleInputChange = (event) => {
		const strValue = event.target.value;

		this.setState({
			strValue,
		});

		if (this.props.onDateChange) {
			const parsedDate = this.props.parser(strValue);
			this.props.onDateChange(parsedDate, strValue);
		}
	};

	// ### Render
	render() {
		return (
			<MenuDropdown
				checkmark={false}
				constrainToScrollParent={this.props.constrainToScrollParent}
				disabled={this.props.disabled}
				inheritTargetWidth={this.props.inheritTargetWidth}
				label={this.props.label}
				listItemRenderer={this.props.listItemRenderer}
				// inline style override
				menuStyle={{
					maxHeight: '20em',
					overflowX: 'hidden',
					minWidth: '100%',
				}}
				menuPosition={this.props.menuPosition}
				onSelect={this.handleSelect}
				options={this.state.options}
			>
				<TimepickerDropdownTrigger
					iconRight={<InputIcon category="utility" name="clock" />}
					onChange={this.handleInputChange}
					placeholder={this.props.placeholder}
					required={this.props.required}
					type="text"
					value={this.state.strValue}
				/>
			</MenuDropdown>
		);
	}
}

export default Timepicker;