solns

src/App.tsx

@@ -1,5 +1,6 @@
 import React, { useEffect, useState } from "react";
 import "./App.css";
+import { fetchTasks, updateTasks } from "./api";
 import KanbanColumn from "./components/KanbanColumn";
 import { Column, DraggableTask, DraggedTaskInfo, Task } from "./types";
 
@@ -13,38 +14,60 @@ export default function App() {
 
   // Fetch Tasks
   useEffect(() => {
-    // TODO: Pull state from json-server
-    // Hint: You may want to use the fetchTasks function from api/index.tsx
+    (async () => {
+      const tasks = await fetchTasks();
+      setKanbanColumns(tasks);
+    })();
   }, []);
 
-  // Hint: You will need these states for dragging and dropping tasks
   const [draggedTaskInfo, setDraggedTaskInfo] = useState<DraggedTaskInfo | null>(null);
   const [hoveredColumn, setHoveredColumn] = useState<Column | null>(null);
 
   const handleTaskDragStart = (task: Task, column: Column) => {
-    // TODO: Implement functionality for when the drag starts
+    setDraggedTaskInfo({ task, column });
   };
 
   const handleTaskDragOver = (e: React.DragEvent, column: Column) => {
     e.preventDefault();
-    // TODO: Implement functionality for when an item is being dragged over a column
-    // Hint: Remember to check if the item is being dragged over a new column
+    if (column !== hoveredColumn) {
+      setHoveredColumn(column);
+    }
   };
 
   const handleTaskDrop = (column: Column) => {
-    // TODO: Implement functionality for when the item is dropped
-    // Hint: Make sure to handle the cases when the item is dropped in the same column or in a new column
+    if (draggedTaskInfo) {
+      // If the task is dropped in a different column, remove it from the old one and add it to the new one.
+      if (column !== draggedTaskInfo.column) {
+        const taskIndex = kanbanColumns[draggedTaskInfo.column].findIndex(
+          (task) => task.id === draggedTaskInfo.task.id
+        );
+        if (taskIndex > -1) {
+          const newColumnTasks = [...kanbanColumns[column], draggedTaskInfo.task];
+          const oldColumnTasks = [...kanbanColumns[draggedTaskInfo.column]];
+          oldColumnTasks.splice(taskIndex, 1);
+          const newState = { ...kanbanColumns, [column]: newColumnTasks, [draggedTaskInfo.column]: oldColumnTasks };
+          setKanbanColumns(newState);
+          // Update the tasks in the db
+          updateTasks(newState).catch((error) => console.error(error));
+        }
+      }
+    }
+
+    setDraggedTaskInfo(null); // Reset dragInfo state
+    setHoveredColumn(null); // Reset overColumn state
   };
 
   const getTasksForColumn = (column: Column): DraggableTask[] => {
-    // TODO: Handle the bug where card dragged over itself shows duplicate
-    // Hint: Consider how you can use the dragInfo and overColumn states to prevent this
-    return [{ id: "1", name: "Task 1", isDragging: false }];
+    let tasks = kanbanColumns[column];
+    if (draggedTaskInfo && hoveredColumn === column && column !== draggedTaskInfo.column) {
+      tasks = [...tasks, { ...draggedTaskInfo.task, isDragging: true }];
+    }
+    return tasks;
   };
 
   const handleTaskDragEnd = () => {
-    // TODO: Implement functionality for when the drag ends
-    // Hint: Remember to handle the case when the item is released back to its current column
+    setDraggedTaskInfo(null); // Reset dragInfo state
+    setHoveredColumn(null); // Reset overColumn state
   };
 
   return (

src/api/index.tsx

@@ -1,10 +1,20 @@
 const apiUrl = "http://localhost:3001";
 
-export const fetchKanbanTasks = async () => {
-  // TODO: Implement functionality to fetch tasks from the server
+export const fetchTasks = async () => {
+  const response = await fetch(`${apiUrl}/tasks`);
+  const data = await response.json();
+  return data;
 };
 
-export const updateKanbanTasks = async (tasks: any) => {
-  // TODO: Save the new order of the items when tasks are modified to the server
-  // Hint: You may want to use the fetch API with a "PUT" method
+export const updateTasks = async (tasks: any) => {
+  const response = await fetch(`${apiUrl}/tasks`, {
+    method: "PUT",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify(tasks),
+  });
+
+  const data = await response.json();
+  return data;
 };