appbaseio/reactivesearch

import React, { Component } from 'react';

import {
    addComponent,
    removeComponent,
    watchComponent,
    updateQuery,
    setQueryOptions,
    setQueryListener,
    loadMore,
} from '@appbaseio/reactivecore/lib/actions';
import {
    getQueryOptions,
    pushToAndClause,
    checkValueChange,
    checkPropChange,
    checkSomePropChange,
    getClassName,
} from '@appbaseio/reactivecore/lib/utils/helper';

import types from '@appbaseio/reactivecore/lib/utils/types';

import { getAggsQuery, getCompositeAggsQuery } from './utils';
import Title from '../../styles/Title';
import Input from '../../styles/Input';
import Button, { loadMoreContainer } from '../../styles/Button';
import Container from '../../styles/Container';
import { UL, Radio } from '../../styles/FormControlList';
import { connect } from '../../utils';

// showLoadMore is experimental API and works only with ES6
class SingleList extends Component {
    constructor(props) {
        super(props);

        this.state = {
            currentValue: '',
            options:
                props.options && props.options[props.dataField]
                    ? this.getOptions(props.options[props.dataField].buckets, props)
                    : [],
            searchTerm: '',
            after: {}, // for composite aggs
            isLastBucket: false,
        };
        this.locked = false;
        this.internalComponent = `${props.componentId}__internal`;
        props.setQueryListener(props.componentId, props.onQueryChange, null);
    }

    componentWillMount() {
        this.props.addComponent(this.internalComponent);
        this.props.addComponent(this.props.componentId);
        this.updateQueryOptions(this.props);

        this.setReact(this.props);

        if (this.props.selectedValue) {
            this.setValue(this.props.selectedValue);
        } else if (this.props.defaultSelected) {
            this.setValue(this.props.defaultSelected);
        }
    }

    componentWillReceiveProps(nextProps) {
        checkPropChange(this.props.react, nextProps.react, () => this.setReact(nextProps));
        checkPropChange(this.props.options, nextProps.options, () => {
            const { showLoadMore, dataField } = nextProps;
            if (showLoadMore) {
                const { buckets } = nextProps.options[dataField];
                const after = nextProps.options[dataField].after_key;
                // detect the last bucket by checking if the after key is absent
                const isLastBucket = !after;
                this.setState(state => ({
                    ...state,
                    after: after ? { after } : state.after,
                    isLastBucket,
                    options: this.getOptions(buckets, nextProps),
                }));
            } else {
                this.setState({
                    options: nextProps.options[nextProps.dataField]
                        ? this.getOptions(nextProps.options[nextProps.dataField].buckets, nextProps)
                        : [],
                });
            }
        });
        checkSomePropChange(this.props, nextProps, ['size', 'sortBy'], () =>
            this.updateQueryOptions(nextProps));

        checkPropChange(this.props.dataField, nextProps.dataField, () => {
            this.updateQueryOptions(nextProps);
            this.updateQuery(this.state.currentValue, nextProps);
        });

        if (this.props.defaultSelected !== nextProps.defaultSelected) {
            this.setValue(nextProps.defaultSelected);
        } else if (this.state.currentValue !== nextProps.selectedValue) {
            this.setValue(nextProps.selectedValue || '');
        }
    }

    componentWillUnmount() {
        this.props.removeComponent(this.props.componentId);
        this.props.removeComponent(this.internalComponent);
    }

    setReact = (props) => {
        const { react } = props;
        if (react) {
            const newReact = pushToAndClause(react, this.internalComponent);
            props.watchComponent(props.componentId, newReact);
        } else {
            props.watchComponent(props.componentId, {
                and: this.internalComponent,
            });
        }
    };

    getOptions = (buckets, props) => {
        if (props.showLoadMore) {
            return buckets.map(bucket => ({
                key: bucket.key[props.dataField],
                doc_count: bucket.doc_count,
            }));
        }

        return buckets;
    };

    static defaultQuery = (value, props) => {
        let query = null;
        if (props.selectAllLabel && props.selectAllLabel === value) {
            if (props.showMissing) {
                query = { match_all: {} };
            }
            query = {
                exists: {
                    field: props.dataField,
                },
            };
        } else if (value) {
            if (props.showMissing && props.missingLabel === value) {
                query = {
                    bool: {
                        must_not: {
                            exists: { field: props.dataField },
                        },
                    },
                };
            }
            query = {
                term: {
                    [props.dataField]: value,
                },
            };
        }
        if (query && props.nestedField) {
            return {
                query: {
                    nested: {
                        path: props.nestedField,
                        query,
                    },
                },
            };
        }
        return query;
    };

    setValue = (nextValue, props = this.props) => {
        // ignore state updates when component is locked
        if (props.beforeValueChange && this.locked) {
            return;
        }

        this.locked = true;
        let value = nextValue;
        if (nextValue === this.state.currentValue) {
            value = '';
        }

        const performUpdate = () => {
            this.setState(
                {
                    currentValue: value,
                },
                () => {
                    this.updateQuery(value, props);
                    this.locked = false;
                    if (props.onValueChange) props.onValueChange(value);
                },
            );
        };

        checkValueChange(props.componentId, value, props.beforeValueChange, performUpdate);
    };

    updateQuery = (value, props) => {
        const query = props.customQuery || SingleList.defaultQuery;

        props.updateQuery({
            componentId: props.componentId,
            query: query(value, props),
            value,
            label: props.filterLabel,
            showFilter: props.showFilter,
            URLParams: props.URLParams,
            componentType: 'SINGLELIST',
        });
    };

    static generateQueryOptions(props, after) {
        const queryOptions = getQueryOptions(props);
        return props.showLoadMore
            ? getCompositeAggsQuery(queryOptions, props, after)
            : getAggsQuery(queryOptions, props);
    }

    updateQueryOptions = (props, addAfterKey = false) => {
        // when using composite aggs flush the current options for a fresh query
        if (props.showLoadMore && !addAfterKey) {
            this.setState({
                options: [],
            });
        }
        // for a new query due to other changes don't append after to get fresh results
        const queryOptions = SingleList.generateQueryOptions(
            props,
            addAfterKey ? this.state.after : {},
        );
        props.setQueryOptions(this.internalComponent, queryOptions);
    };

    handleInputChange = (e) => {
        const { value } = e.target;
        this.setState({
            searchTerm: value,
        });
    };

    handleLoadMore = () => {
        const queryOptions = SingleList.generateQueryOptions(this.props, this.state.after);
        this.props.loadMore(this.props.componentId, queryOptions);
    };

    renderSearch = () => {
        if (this.props.showSearch) {
            return (
                <Input
                    className={getClassName(this.props.innerClass, 'input') || null}
                    onChange={this.handleInputChange}
                    value={this.state.searchTerm}
                    placeholder={this.props.placeholder}
                    style={{
                        margin: '0 0 8px',
                    }}
                    themePreset={this.props.themePreset}
                />
            );
        }
        return null;
    };

    handleClick = (e) => {
        this.setValue(e.target.value);
    };

    render() {
        const {
            selectAllLabel, renderListItem, showLoadMore, loadMoreLabel,
        } = this.props;
        const { isLastBucket } = this.state;

        if (this.props.isLoading && this.props.loader) {
            return this.props.loader;
        }

        if (this.state.options.length === 0) {
            return null;
        }

        let { options: itemsToRender } = this.state;

        if (this.props.transformData) {
            itemsToRender = this.props.transformData(itemsToRender);
        }

        return (
            <Container style={this.props.style} className={this.props.className}>
                {this.props.title && (
                    <Title className={getClassName(this.props.innerClass, 'title') || null}>
                        {this.props.title}
                    </Title>
                )}
                {this.renderSearch()}
                <UL className={getClassName(this.props.innerClass, 'list') || null}>
                    {selectAllLabel ? (
                        <li
                            key={selectAllLabel}
                            className={`${
                                this.state.currentValue === selectAllLabel ? 'active' : ''
                            }`}
                        >
                            <Radio
                                className={getClassName(this.props.innerClass, 'radio')}
                                id={`${this.props.componentId}-${selectAllLabel}`}
                                name={this.props.componentId}
                                value={selectAllLabel}
                                onClick={this.handleClick}
                                readOnly
                                checked={this.state.currentValue === selectAllLabel}
                                show={this.props.showRadio}
                            />
                            <label
                                className={getClassName(this.props.innerClass, 'label') || null}
                                htmlFor={`${this.props.componentId}-${selectAllLabel}`}
                            >
                                {selectAllLabel}
                            </label>
                        </li>
                    ) : null}
                    {itemsToRender
                        .filter((item) => {
                            if (String(item.key).length) {
                                if (this.props.showSearch && this.state.searchTerm) {
                                    return String(item.key)
                                        .toLowerCase()
                                        .includes(this.state.searchTerm.toLowerCase());
                                }
                                return true;
                            }
                            return false;
                        })
                        .map(item => (
                            <li
                                key={item.key}
                                className={`${
                                    this.state.currentValue === String(item.key) ? 'active' : ''
                                }`}
                            >
                                <Radio
                                    className={getClassName(this.props.innerClass, 'radio')}
                                    id={`${this.props.componentId}-${item.key}`}
                                    name={this.props.componentId}
                                    value={item.key}
                                    readOnly
                                    onClick={this.handleClick}
                                    checked={this.state.currentValue === String(item.key)}
                                    show={this.props.showRadio}
                                />
                                <label
                                    className={getClassName(this.props.innerClass, 'label') || null}
                                    htmlFor={`${this.props.componentId}-${item.key}`}
                                >
                                    {renderListItem ? (
                                        renderListItem(item.key, item.doc_count)
                                    ) : (
                                        <span>
                                            {item.key}
                                            {this.props.showCount && (
                                                <span
                                                    className={
                                                        getClassName(
                                                            this.props.innerClass,
                                                            'count',
                                                        ) || null
                                                    }
                                                >
                                                    &nbsp;({item.doc_count})
                                                </span>
                                            )}
                                        </span>
                                    )}
                                </label>
                            </li>
                        ))}
                    {showLoadMore
                        && !isLastBucket && (
                        <div css={loadMoreContainer}>
                            <Button onClick={this.handleLoadMore}>{loadMoreLabel}</Button>
                        </div>
                    )}
                </UL>
            </Container>
        );
    }
}

SingleList.propTypes = {
    addComponent: types.funcRequired,
    removeComponent: types.funcRequired,
    setQueryListener: types.funcRequired,
    setQueryOptions: types.funcRequired,
    loadMore: types.funcRequired,
    updateQuery: types.funcRequired,
    watchComponent: types.funcRequired,
    options: types.options,
    selectedValue: types.selectedValue,
    // component props
    beforeValueChange: types.func,
    className: types.string,
    componentId: types.stringRequired,
    customQuery: types.func,
    dataField: types.stringRequired,
    defaultSelected: types.string,
    filterLabel: types.string,
    innerClass: types.style,
    isLoading: types.bool,
    loader: types.title,
    onQueryChange: types.func,
    onValueChange: types.func,
    placeholder: types.string,
    react: types.react,
    renderListItem: types.func,
    transformData: types.func,
    selectAllLabel: types.string,
    showCount: types.bool,
    showFilter: types.bool,
    showRadio: types.boolRequired,
    showSearch: types.bool,
    size: types.number,
    sortBy: types.sortByWithCount,
    style: types.style,
    themePreset: types.themePreset,
    title: types.title,
    URLParams: types.bool,
    showMissing: types.bool,
    missingLabel: types.string,
    showLoadMore: types.bool,
    loadMoreLabel: types.title,
    nestedField: types.string,
};

SingleList.defaultProps = {
    className: null,
    placeholder: 'Search',
    showCount: true,
    showFilter: true,
    showRadio: true,
    showSearch: true,
    size: 100,
    sortBy: 'count',
    style: {},
    URLParams: false,
    showMissing: false,
    missingLabel: 'N/A',
    showLoadMore: false,
    loadMoreLabel: 'Load More',
};

const mapStateToProps = (state, props) => ({
    options:
        props.nestedField && state.aggregations[props.componentId]
            ? state.aggregations[props.componentId].reactivesearch_nested
            : state.aggregations[props.componentId],
    selectedValue:
        (state.selectedValues[props.componentId]
            && state.selectedValues[props.componentId].value)
        || '',
    themePreset: state.config.themePreset,
    isLoading: state.isLoading[props.componentId],
});

const mapDispatchtoProps = dispatch => ({
    addComponent: component => dispatch(addComponent(component)),
    removeComponent: component => dispatch(removeComponent(component)),
    setQueryOptions: (component, props) => dispatch(setQueryOptions(component, props)),
    loadMore: (component, aggsQuery) => dispatch(loadMore(component, aggsQuery, true, true)),
    setQueryListener: (component, onQueryChange, beforeQueryChange) =>
        dispatch(setQueryListener(component, onQueryChange, beforeQueryChange)),
    updateQuery: updateQueryObject => dispatch(updateQuery(updateQueryObject)),
    watchComponent: (component, react) => dispatch(watchComponent(component, react)),
});

export default connect(
    mapStateToProps,
    mapDispatchtoProps,
)(SingleList);