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import {useState, useEffect, createRef} from 'react'
import {useTranslation} from "react-i18next";
import {
Button,
Card,
CardBody
} from "reactstrap";
import {
faPlus,
} from "@fortawesome/free-solid-svg-icons";
import {FontAwesomeIcon} from "@fortawesome/react-fontawesome";
import {
sortableContainer,
sortableElement,
sortableHandle
} from "react-sortable-hoc";
import arrayMove from "array-move"
import CandidateField from './CandidateField'
// const SortableItem = sortableElement(({className, ...childProps}) => <li className={className}><CandidateField {...childProps} /></li>);
//
// const SortableContainer = sortableContainer(({children}) => {
// return <ul className="sortable">{children}</ul>;
// });
const SortableItem = ({className, ...childProps}) => <li className={className}><CandidateField {...childProps} /></li>;
const SortableContainer = ({children}) => {
return <ul className="sortable">{children}</ul>;
};
const CandidatesField = ({onChange}) => {
const {t} = useTranslation();
const [candidates, setCandidates] = useState([])
const addCandidate = () => {
if (candidates.length < 1000) {
candidates.push({label: "", fieldRef: createRef()});
setCandidates([...candidates]);
onChange(candidates)
} else {
console.error("Too many candidates")
}
};
useEffect(() => {
addCandidate();
addCandidate();
}, [])
const removeCandidate = index => {
if (candidates.length === 1) {
const newCandidates = []
newCandidates.push({label: "", fieldRef: createRef()});
newCandidates.push({label: "", fieldRef: createRef()});
setCandidates(newCandidates);
onChange(newCandidates)
}
else {
const newCandidates = candidates.filter((c, i) => i != index)
setCandidates(newCandidates);
onChange(newCandidates);
}
};
const editCandidate = (index, label) => {
candidates[index].label = label
setCandidates([...candidates]);
onChange(candidates);
};
const handleKeyPress = (e, index) => {
if (e.key === "Enter") {
e.preventDefault();
if (index + 1 === candidates.length) {
addCandidate();
}
else {
candidates[index + 1].fieldRef.current.focus();
}
}
}
const onSortEnd = ({oldIndex, newIndex}) => {
setCandidates(arrayMove(candidates, oldIndex, newIndex));
};
return (
<>
<SortableContainer onSortEnd={onSortEnd}>
{candidates.map((candidate, index) => {
const className = "sortable"
return (
<SortableItem
className={className}
key={`item-${index}`}
index={index}
candIndex={index}
label={candidate.label}
onDelete={() => removeCandidate(index)}
onChange={(e) => editCandidate(index, e.target.value)}
onKeyPress={(e) => handleKeyPress(e, index)}
innerRef={candidate.fieldRef}
/>
)
})}
</SortableContainer>
<Button
color="secondary"
className="btn-block mt-2"
tabIndex={candidates.length + 2}
type="button"
onClick={addCandidate}
>
<FontAwesomeIcon icon={faPlus} className="mr-2" />
{t("Add a proposal")}
</Button>
</>
);
}
export default CandidatesField