import React from 'react';
import { connect } from 'react-redux';
import { Set } from "immutable";
import { NoContent, Loader, Checkbox, IconButton, Input, Pagination } from 'UI';
import { merge, resolve, unresolve, ignore, updateCurrentPage, editOptions } from "Duck/errors";
import { applyFilter } from 'Duck/filters';
import { IGNORED, UNRESOLVED } from 'Types/errorInfo';
import Divider from 'Components/Errors/ui/Divider';
import ListItem from './ListItem/ListItem';
import { debounce } from 'App/utils';
import Select from 'Shared/Select';
import EmptyStateSvg from '../../../svg/no-results.svg';

const sortOptionsMap = {
	'occurrence-desc': 'Last Occurrence',
	'occurrence-desc': 'First Occurrence',
	'sessions-asc': 'Sessions Ascending',
	'sessions-desc': 'Sessions Descending',
	'users-asc': 'Users Ascending',
	'users-desc': 'Users Descending',
};
const sortOptions = Object.entries(sortOptionsMap)
  .map(([ value, label ]) => ({ value, label }));

@connect(state => ({
	loading: state.getIn([ "errors", "loading" ]),
	resolveToggleLoading: state.getIn(["errors", "resolve", "loading"]) ||
		state.getIn(["errors", "unresolve", "loading"]),
	ignoreLoading: state.getIn([ "errors", "ignore", "loading" ]),
	mergeLoading: state.getIn([ "errors", "merge", "loading" ]),
	currentPage: state.getIn(["errors", "currentPage"]),
	limit: state.getIn(["errors", "limit"]),
	total: state.getIn([ 'errors', 'totalCount' ]),
	sort: state.getIn([ 'errors', 'options', 'sort' ]),
	order: state.getIn([ 'errors', 'options', 'order' ]),
	query: state.getIn([ "errors", "options", "query" ]),
}), {
	merge,
	resolve,
	unresolve,
	ignore,
	applyFilter,
  	updateCurrentPage,
	editOptions,
})
export default class List extends React.PureComponent {
	constructor(props) {
		super(props)
		this.state = {
			checkedAll: false,
			checkedIds: Set(),
			query: props.query,
		}
		this.debounceFetch = debounce(this.props.editOptions, 1000);
	}

	componentDidMount() {
		this.props.applyFilter({ });
	}

	check = ({ errorId }) => {
		const { checkedIds } = this.state;
		const newCheckedIds = checkedIds.contains(errorId)
			? checkedIds.remove(errorId)
			: checkedIds.add(errorId);
		this.setState({
			checkedAll: newCheckedIds.size === this.props.list.size,
			checkedIds: newCheckedIds
		});
	}

	checkAll = () => {
		if (this.state.checkedAll) {
			this.setState({
				checkedAll: false,
				checkedIds: Set(),
			});
		} else {
			this.setState({
				checkedAll: true,
				checkedIds: this.props.list.map(({ errorId }) => errorId).toSet(),
			});
		}
	}

	resetChecked = () => {
		this.setState({
			checkedAll: false,
			checkedIds: Set(),
		});
	}

	currentCheckedIds() {
		return this.state.checkedIds
			.intersect(this.props.list.map(({ errorId }) => errorId).toSet());
	}

	merge = () => {
		this.props.merge(currentCheckedIds().toJS()).then(this.resetChecked);
	}

	applyToAllChecked(f) {
		return Promise.all(this.currentCheckedIds().map(f).toJS()).then(this.resetChecked);
	}

	resolve = () => {
		this.applyToAllChecked(this.props.resolve);
	}

	unresolve = () => {
		this.applyToAllChecked(this.props.unresolve);
	}

	ignore = () => {
		this.applyToAllChecked(this.props.ignore);
	}

	addPage = () => this.props.updateCurrentPage(this.props.currentPage + 1)

	writeOption = ({ name, value }) => {
		const [ sort, order ] = value.split('-');
		if (name === 'sort') {
			this.props.editOptions({ sort, order });
		}
	}

	// onQueryChange = ({ target: { value, name } }) => props.edit({ [ name ]: value })

	onQueryChange = ({ target: { value, name } }) => {
		this.setState({ query: value });
		this.debounceFetch({ query: value });
	}

	render() {
		const {
			list,
			status,
			loading,
			ignoreLoading,
			resolveToggleLoading,
			mergeLoading,
      		currentPage,
		  	total,
			sort,
			order,
			limit,
		} = this.props;
		const {
			checkedAll,
			checkedIds,
			query,
		} = this.state;
		const someLoading = loading || ignoreLoading || resolveToggleLoading || mergeLoading;
		const currentCheckedIds = this.currentCheckedIds();

		return (
			<div className="bg-white p-5 border-radius-3 thin-gray-border">
				<div className="flex items-center justify-between mb-4">
					<div className="flex items-center" style={{ height: "36px" }}>
						<Checkbox
							className="mr-3"
							checked={ checkedAll }
							onChange={ this.checkAll }
						/>
						{ status === UNRESOLVED
							? <IconButton
									outline
									className="mr-3"
									label="Resolve"
									icon="check"
									size="small"
									loading={ resolveToggleLoading }
									onClick={ this.resolve }
									disabled={ someLoading || currentCheckedIds.size === 0}
								/>
							: <IconButton
									outline
									className="mr-3"
									label="Unresolve"
									icon="exclamation-circle"
									size="small"
									loading={ resolveToggleLoading }
									onClick={ this.unresolve }
									disabled={ someLoading || currentCheckedIds.size === 0}
								/>
						}
						{ status !== IGNORED &&
							<IconButton
								outline
								className="mr-3"
								label="Ignore"
								icon="ban"
								size="small"
								loading={ ignoreLoading }
								onClick={ this.ignore }
								disabled={ someLoading || currentCheckedIds.size === 0}
							/>
						}
					</div>
					<div className="flex items-center ml-6">
						<span className="mr-2 color-gray-medium">Sort By</span>
						<Select
							defaultValue={ `${sort}-${order}` }
							name="sort"
							plain
							options={ sortOptions }
							onChange={ this.writeOption }
						/>
						<Input
							style={{ width: '350px'}}
							wrapperClassName="ml-3"
							placeholder="Filter by name or message"
							icon="search"
							name="filter"
							onChange={ this.onQueryChange }
							value={query}
						/>
	        			</div>
					</div>
					<Divider />
					<NoContent
						title={
							<div className="flex flex-col items-center justify-center">
								<object style={{ width: "180px"}} type="image/svg+xml" data={EmptyStateSvg} />
								<span className="mr-2">No Errors Found!</span>
							</div>
						}
						subtext="Please try to change your search parameters."
						// animatedIcon="empty-state"
						show={ !loading && list.size === 0}
					>
					<Loader loading={ loading }>
						{ list.map(e =>
							<div key={e.errorId} style={{ opacity: e.disabled ? 0.5 : 1}}>
								<ListItem
									disabled={someLoading || e.disabled}
									key={e.errorId}
									error={e}
									checked={ checkedIds.contains(e.errorId) }
									onCheck={ this.check }
								/>
								<Divider/>
							</div>
						)}
						<div className="w-full flex items-center justify-center mt-4">
							<Pagination
								page={currentPage}
								totalPages={Math.ceil(total / limit)}
								onPageChange={(page) => this.props.updateCurrentPage(page)}
								limit={limit}
								debounceRequest={500}
							/>
						</div>
					</Loader>
	     		</NoContent>
			</div>
		);
	}
}