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import React, { Component } from 'react'
// import PropTypes from 'prop-types'
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux'
function formatLabel(label, value) {
if (!value) {
return label
}
let len = 0
return (
<span>
{
label.split(new RegExp(value.replace(/[-\[\]\(\)\+\*\\\^\$\{\}\.\?\&\|\<\>]/g, ''), "i")) // eslint-disable-line
.reduce((prev, current, i) => {
if (!i) {
len += current.length
return [current]
}
const ret = prev.concat(<b key={i}>{label.substr(len, value.length)}</b>, current)
len += value.length + current.length
return ret
}, [])
}
</span>
)
}
function sanitizeForAutocomplete(s) {
return (s || "")
.toLowerCase()
.replace(/[^a-zA-Z0-9 ]/g, '')
.trim()
.replace(/\\/g, '')
}
class Autocomplete extends Component {
constructor(props) {
super()
this.state = {
q: props.q || "",
selected: 0,
matches: []
}
this.handleKeyDown = this.handleKeyDown.bind(this)
this.handleChange = this.handleChange.bind(this)
this.handleCancel = this.handleCancel.bind(this)
}
componentDidMount() {
// build index based on what's in the hierarchy
const { entities, lookup } = this.props.institutions
let index = []
this.index = index
Object.keys(entities).forEach(name => {
if (!name) return
index.push([sanitizeForAutocomplete(name), name])
})
Object.keys(lookup).forEach(name => {
if (!name) return
index.push([sanitizeForAutocomplete(name), lookup[name]])
})
// console.log(index)
// node.synonyms
// .split("\n")
// .map(word => word = word.trim())
// .filter(word => !!word)
// .forEach(word => index.push([prefixName, name, node.id]))
}
componentDidUpdate(oldProps) {
if (this.props.vetting !== oldProps.vetting) {
this.handleChange({ target: { value: this.props.vetting } })
} else if (this.props.value !== oldProps.value) {
this.setState({ q: '' })
}
}
handleKeyDown(e) {
let id
switch (e.keyCode) {
case 27: // escape
e.preventDefault()
this.handleCancel()
break
case 37: // left
case 38: // up
e.preventDefault()
this.setState({
selected: (this.state.matches.length + this.state.selected - 1) % this.state.matches.length
})
return false
case 39: // right
case 40: // down
e.preventDefault()
this.setState({
selected: (this.state.selected + 1) % this.state.matches.length
})
return false
case 13: // enter
id = this.state.matches[this.state.selected]
e.preventDefault()
this.handleSelect(id)
return false
default:
break
}
return null
}
handleChange(e) {
// search for the given string in our index
const q = e.target.value
let value = sanitizeForAutocomplete(q)
if (!value.length) {
this.setState({
q,
selected: 0,
matches: [],
})
return
}
let seen = {}
let matches = []
value.split(' ').forEach(word => {
const re = new RegExp(word)
this.index.forEach(([synonym, term]) => {
if (synonym.match(re)) {
if (synonym.indexOf(value) === 0) {
if (term in seen) {
seen[term] += 4
} else {
seen[term] = 4
}
} else if (term in seen) {
seen[term] += 1
} else {
seen[term] = 1
}
}
})
matches = Object.keys(seen)
.map(term => [seen[term], term])
.sort((a, b) => {
return b[0] - a[0]
})
.slice(0, 100)
.map(pair => pair[1])
})
this.setState({
q,
selected: 0,
matches,
})
}
handleSelect(name) {
console.log('select', name)
if (this.props.onSelect) this.props.onSelect(name)
this.setState({ q: name, selected: 0, matches: [] })
}
handleCancel() {
if (this.props.onCancel) this.props.onCancel()
this.setState({ q: '', selected: 0, matches: [] })
}
render() {
const { q, selected } = this.state
const matches = this.state.matches.map((match, i) => {
const label = formatLabel(match, q)
return (
<div
key={i}
className={selected === i ? 'selected' : ''}
onClick={() => this.handleSelect(match)}
onMouseEnter={() => this.setState({ selected: i })}
>
{label}
</div>
)
})
return (
<div className="autocomplete">
<input
type="text"
name="q"
value={this.state.q || this.props.value}
onKeyDown={this.handleKeyDown}
onChange={this.handleChange}
autoFocus={this.props.autoFocus}
autoCapitalize="off"
autoComplete="off"
placeholder={this.props.placeholder}
ref={ref => this._el = ref}
/>
{!!matches.length &&
<div className="matches">
{matches}
</div>
}
</div>
)
}
}
const mapStateToProps = (state, ownProps) => ({
onSelect: ownProps.onSelect,
institutions: state.api.institutions,
})
const mapDispatchToProps = (dispatch) => ({
})
export default connect(mapStateToProps, mapDispatchToProps)(Autocomplete)
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