import React useState from react import DragDropContext Droppable Drag

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import React, { useState } from 'react';
import { DragDropContext, Droppable, Draggable } from 'react-beautiful-dnd';
import uuid from 'uid'
const itemsFromBackend = [
{ id: uuid(), content: "First task" },
{ id: uuid(), content: "Second task" },
{ id: uuid(), content: "Third task" },
{ id: uuid(), content: "Fourth task" },
{ id: uuid(), content: "Fifth task" }
];
const columnsFromBackend = {
[uuid()]: {
name: "Requested",
items: itemsFromBackend
},
[uuid()]: {
name: "To do",
items: []
},
[uuid()]: {
name: "In Progress",
items: []
},
[uuid()]: {
name: "Done",
items: []
}
};
const onDragEnd = (result, columns, setColumns) => {
if (!result.destination) return;
const { source, destination } = result;
if (source.droppableId !== destination.droppableId) {
const sourceColumn = columns[source.droppableId];
const destColumn = columns[destination.droppableId];
const sourceItems = [...sourceColumn.items];
const destItems = [...destColumn.items];
const [removed] = sourceItems.splice(source.index, 1);
destItems.splice(destination.index, 0, removed);
setColumns({
...columns,
[source.droppableId]: {
...sourceColumn,
items: sourceItems
},
[destination.droppableId]: {
...destColumn,
items: destItems
}
});
} else {
const column = columns[source.droppableId];
const copiedItems = [...column.items];
const [removed] = copiedItems.splice(source.index, 1);
copiedItems.splice(destination.index, 0, removed);
setColumns({
...columns,
[source.droppableId]: {
...column,
items: copiedItems
}
});
}
};
function App() {
const [columns, setColumns] = useState(columnsFromBackend);
return (
<div style={{ display: "flex", justifyContent: "center", height: "100%" }}>
<DragDropContext
onDragEnd={result => onDragEnd(result, columns, setColumns)}
>
{Object.entries(columns).map(([columnId, column], index) => {
return (
<div
style={{
display: "flex",
flexDirection: "column",
alignItems: "center"
}}
key={columnId}
>
<h2>{column.name}</h2>
<div style={{ margin: 8 }}>
<Droppable droppableId={columnId} key={columnId}>
{(provided, snapshot) => {
return (
<div
{...provided.droppableProps}
ref={provided.innerRef}
style={{
background: snapshot.isDraggingOver
? "lightblue"
: "lightgrey",
padding: 4,
width: 250,
minHeight: 500
}}
>
{column.items.map((item, index) => {
return (
<Draggable
key={item.id}
draggableId={item.id}
index={index}
>
{(provided, snapshot) => {
return (
<div
ref={provided.innerRef}
{...provided.draggableProps}
{...provided.dragHandleProps}
style={{
userSelect: "none",
padding: 16,
margin: "0 0 8px 0",
minHeight: "50px",
backgroundColor: snapshot.isDragging
? "#263B4A"
: "#456C86",
color: "white",
...provided.draggableProps.style
}}
>
{item.content}
</div>
);
}}
</Draggable>
);
})}
{provided.placeholder}
</div>
);
}}
</Droppable>
</div>
</div>
);
})}
</DragDropContext>
</div>
);
}
export default App;