Add sprint support to data model and API

- Added Sprint type and interface
- Updated Task to include sprintId
- Added sprint actions to task store (addSprint, updateSprint, deleteSprint, selectSprint)
- Updated API to handle sprints
- Updated all sync calls to include sprints

src/app/api/tasks/route.ts

@@ -12,6 +12,7 @@ interface Task {
   status: 'backlog' | 'in-progress' | 'review' | 'done' | 'archived';
   priority: 'low' | 'medium' | 'high' | 'urgent';
   projectId: string;
+  sprintId?: string;
   createdAt: string;
   updatedAt: string;
   dueDate?: string;
@@ -27,9 +28,21 @@ interface Project {
   createdAt: string;
 }
 
+interface Sprint {
+  id: string;
+  name: string;
+  goal?: string;
+  startDate: string;
+  endDate: string;
+  status: 'planning' | 'active' | 'completed';
+  projectId: string;
+  createdAt: string;
+}
+
 interface DataStore {
   projects: Project[];
   tasks: Task[];
+  sprints: Sprint[];
   lastUpdated: number;
 }
 
@@ -40,6 +53,7 @@ const defaultData: DataStore = {
     { id: '3', name: 'Research', description: 'Experiments and learning', color: '#10b981', createdAt: new Date().toISOString() },
   ],
   tasks: [],
+  sprints: [],
   lastUpdated: Date.now(),
 };
 
@@ -64,16 +78,16 @@ function saveData(data: DataStore) {
   writeFileSync(DATA_FILE, JSON.stringify(data, null, 2));
 }
 
-// GET - fetch all tasks and projects
+// GET - fetch all tasks, projects, and sprints
 export async function GET() {
   const data = getData();
   return NextResponse.json(data);
 }
 
-// POST - create or update a task
+// POST - create or update tasks, projects, or sprints
 export async function POST(request: Request) {
   try {
-    const { task, projects } = await request.json();
+    const { task, projects, sprints } = await request.json();
     const data = getData();
 
     // Update projects if provided
@@ -81,6 +95,11 @@ export async function POST(request: Request) {
       data.projects = projects;
     }
 
+    // Update sprints if provided
+    if (sprints) {
+      data.sprints = sprints;
+    }
+
     // Update or add task
     if (task) {
       const existingIndex = data.tasks.findIndex((t) => t.id === task.id);

src/stores/useTaskStore.ts

@@ -4,6 +4,18 @@ import { persist } from 'zustand/middleware'
 export type TaskType = 'idea' | 'task' | 'bug' | 'research' | 'plan'
 export type TaskStatus = 'backlog' | 'in-progress' | 'review' | 'done' | 'archived'
 export type Priority = 'low' | 'medium' | 'high' | 'urgent'
+export type SprintStatus = 'planning' | 'active' | 'completed'
+
+export interface Sprint {
+  id: string
+  name: string
+  goal?: string
+  startDate: string
+  endDate: string
+  status: SprintStatus
+  projectId: string
+  createdAt: string
+}
 
 export interface Comment {
   id: string
@@ -20,6 +32,7 @@ export interface Task {
   status: TaskStatus
   priority: Priority
   projectId: string
+  sprintId?: string
   createdAt: string
   updatedAt: string
   dueDate?: string
@@ -38,8 +51,10 @@ export interface Project {
 interface TaskStore {
   projects: Project[]
   tasks: Task[]
+  sprints: Sprint[]
   selectedProjectId: string | null
   selectedTaskId: string | null
+  selectedSprintId: string | null
   isLoading: boolean
   lastSynced: number | null
 
@@ -59,6 +74,13 @@ interface TaskStore {
   deleteTask: (id: string) => void
   selectTask: (id: string | null) => void
 
+  // Sprint actions
+  addSprint: (sprint: Omit<Sprint, 'id' | 'createdAt'>) => void
+  updateSprint: (id: string, updates: Partial<Sprint>) => void
+  deleteSprint: (id: string) => void
+  selectSprint: (id: string | null) => void
+  getTasksBySprint: (sprintId: string) => Task[]
+
   // Comment actions
   addComment: (taskId: string, text: string, author: 'user' | 'assistant') => void
   deleteComment: (taskId: string, commentId: string) => void
@@ -325,12 +347,12 @@ const defaultTasks: Task[] = [
 ]
 
 // Helper to sync to server
-async function syncToServer(projects: Project[], tasks: Task[]) {
+async function syncToServer(projects: Project[], tasks: Task[], sprints: Sprint[]) {
   try {
     await fetch('/api/tasks', {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ projects, tasks }),
+      body: JSON.stringify({ projects, tasks, sprints }),
     })
   } catch (error) {
     console.error('Failed to sync to server:', error)
@@ -342,8 +364,10 @@ export const useTaskStore = create<TaskStore>()(
     (set, get) => ({
       projects: defaultProjects,
       tasks: defaultTasks,
+      sprints: [],
       selectedProjectId: '1',
       selectedTaskId: null,
+      selectedSprintId: null,
       isLoading: false,
       lastSynced: null,
 
@@ -353,10 +377,11 @@ export const useTaskStore = create<TaskStore>()(
           const res = await fetch('/api/tasks')
           if (res.ok) {
             const data = await res.json()
-            if (data.tasks?.length > 0 || data.projects?.length > 0) {
+            if (data.tasks?.length > 0 || data.projects?.length > 0 || data.sprints?.length > 0) {
               set({
                 projects: data.projects || get().projects,
                 tasks: data.tasks || get().tasks,
+                sprints: data.sprints || get().sprints,
                 lastSynced: Date.now(),
               })
             }
@@ -370,8 +395,8 @@ export const useTaskStore = create<TaskStore>()(
       },
 
       syncToServer: async () => {
-        const { projects, tasks } = get()
-        await syncToServer(projects, tasks)
+        const { projects, tasks, sprints } = get()
+        await syncToServer(projects, tasks, sprints)
         set({ lastSynced: Date.now() })
       },
 
@@ -387,7 +412,7 @@ export const useTaskStore = create<TaskStore>()(
         set((state) => {
           const newState = { projects: [...state.projects, newProject] }
           // Sync to server
-          syncToServer(newState.projects, state.tasks)
+          syncToServer(newState.projects, state.tasks, state.sprints)
           return newState
         })
       },
@@ -395,7 +420,7 @@ export const useTaskStore = create<TaskStore>()(
       updateProject: (id, updates) => {
         set((state) => {
           const newProjects = state.projects.map((p) => (p.id === id ? { ...p, ...updates } : p))
-          syncToServer(newProjects, state.tasks)
+          syncToServer(newProjects, state.tasks, state.sprints)
           return { projects: newProjects }
         })
       },
@@ -404,16 +429,18 @@ export const useTaskStore = create<TaskStore>()(
         set((state) => {
           const newProjects = state.projects.filter((p) => p.id !== id)
           const newTasks = state.tasks.filter((t) => t.projectId !== id)
-          syncToServer(newProjects, newTasks)
+          const newSprints = state.sprints.filter((s) => s.projectId !== id)
+          syncToServer(newProjects, newTasks, newSprints)
           return {
             projects: newProjects,
             tasks: newTasks,
+            sprints: newSprints,
             selectedProjectId: state.selectedProjectId === id ? null : state.selectedProjectId,
           }
         })
       },
 
-      selectProject: (id) => set({ selectedProjectId: id, selectedTaskId: null }),
+      selectProject: (id) => set({ selectedProjectId: id, selectedTaskId: null, selectedSprintId: null }),
 
       addTask: (task) => {
         const newTask: Task = {
@@ -425,7 +452,7 @@ export const useTaskStore = create<TaskStore>()(
         }
         set((state) => {
           const newTasks = [...state.tasks, newTask]
-          syncToServer(state.projects, newTasks)
+          syncToServer(state.projects, newTasks, state.sprints)
           return { tasks: newTasks }
         })
       },
@@ -435,7 +462,7 @@ export const useTaskStore = create<TaskStore>()(
           const newTasks = state.tasks.map((t) =>
             t.id === id ? { ...t, ...updates, updatedAt: new Date().toISOString() } : t
           )
-          syncToServer(state.projects, newTasks)
+          syncToServer(state.projects, newTasks, state.sprints)
           return { tasks: newTasks }
         })
       },
@@ -443,7 +470,7 @@ export const useTaskStore = create<TaskStore>()(
       deleteTask: (id) => {
         set((state) => {
           const newTasks = state.tasks.filter((t) => t.id !== id)
-          syncToServer(state.projects, newTasks)
+          syncToServer(state.projects, newTasks, state.sprints)
           return {
             tasks: newTasks,
             selectedTaskId: state.selectedTaskId === id ? null : state.selectedTaskId,
@@ -453,6 +480,51 @@ export const useTaskStore = create<TaskStore>()(
 
       selectTask: (id) => set({ selectedTaskId: id }),
 
+      // Sprint actions
+      addSprint: (sprint) => {
+        const newSprint: Sprint = {
+          ...sprint,
+          id: Date.now().toString(),
+          createdAt: new Date().toISOString(),
+        }
+        set((state) => {
+          const newSprints = [...state.sprints, newSprint]
+          syncToServer(state.projects, state.tasks, newSprints)
+          return { sprints: newSprints }
+        })
+      },
+
+      updateSprint: (id, updates) => {
+        set((state) => {
+          const newSprints = state.sprints.map((s) =>
+            s.id === id ? { ...s, ...updates } : s
+          )
+          syncToServer(state.projects, state.tasks, newSprints)
+          return { sprints: newSprints }
+        })
+      },
+
+      deleteSprint: (id) => {
+        set((state) => {
+          const newSprints = state.sprints.filter((s) => s.id !== id)
+          const newTasks = state.tasks.map((t) =>
+            t.sprintId === id ? { ...t, sprintId: undefined } : t
+          )
+          syncToServer(state.projects, newTasks, newSprints)
+          return {
+            sprints: newSprints,
+            tasks: newTasks,
+            selectedSprintId: state.selectedSprintId === id ? null : state.selectedSprintId,
+          }
+        })
+      },
+
+      selectSprint: (id) => set({ selectedSprintId: id }),
+
+      getTasksBySprint: (sprintId) => {
+        return get().tasks.filter((t) => t.sprintId === sprintId)
+      },
+
       addComment: (taskId, text, author) => {
         const newComment: Comment = {
           id: Date.now().toString(),
@@ -466,7 +538,7 @@ export const useTaskStore = create<TaskStore>()(
               ? { ...t, comments: [...t.comments, newComment], updatedAt: new Date().toISOString() }
               : t
           )
-          syncToServer(state.projects, newTasks)
+          syncToServer(state.projects, newTasks, state.sprints)
           return { tasks: newTasks }
         })
       },
@@ -478,7 +550,7 @@ export const useTaskStore = create<TaskStore>()(
               ? { ...t, comments: t.comments.filter((c) => c.id !== commentId) }
               : t
           )
-          syncToServer(state.projects, newTasks)
+          syncToServer(state.projects, newTasks, state.sprints)
           return { tasks: newTasks }
         })
       },