From 84ef53ae0596520a11c6172b392b2a481d607dba Mon Sep 17 00:00:00 2001
From: lubiana <lubiana@hannover.ccc.de>
Date: Fri, 25 Jul 2025 20:18:05 +0200
Subject: [PATCH] import export

---
 frontend/src/components/CreateChecklist.tsx |  67 +++++++-
 frontend/src/components/SavedChecklists.tsx |  23 ++-
 frontend/src/hooks/useLocalStorage.ts       | 161 +++++++++++++++++++-
 frontend/src/pages/Checklist.tsx            |  23 +++
 test-checklist.json                         |  47 ++++++
 5 files changed, 315 insertions(+), 6 deletions(-)
 create mode 100644 test-checklist.json

diff --git a/frontend/src/components/CreateChecklist.tsx b/frontend/src/components/CreateChecklist.tsx
index 9a46447..c220870 100644
--- a/frontend/src/components/CreateChecklist.tsx
+++ b/frontend/src/components/CreateChecklist.tsx
@@ -1,5 +1,6 @@
-import { useState } from 'react'
+import { useState, useRef } from 'react'
 import { useNavigate } from 'react-router-dom'
+import { importChecklistFromJSON } from '../hooks/useLocalStorage'
 
 interface CreateChecklistProps {
   className?: string
@@ -8,6 +9,8 @@ interface CreateChecklistProps {
 export default function CreateChecklist({ className = '' }: CreateChecklistProps) {
   const [checklistName, setChecklistName] = useState('')
   const [isCreating, setIsCreating] = useState(false)
+  const [isImporting, setIsImporting] = useState(false)
+  const fileInputRef = useRef<HTMLInputElement>(null)
   const navigate = useNavigate()
 
   const createChecklist = async () => {
@@ -46,22 +49,48 @@ export default function CreateChecklist({ className = '' }: CreateChecklistProps
     }
   }
 
+  const handleImportChecklist = async (event: React.ChangeEvent<HTMLInputElement>) => {
+    const file = event.target.files?.[0]
+    if (!file) return
+
+    setIsImporting(true)
+    try {
+      const newUuid = await importChecklistFromJSON(file)
+      navigate(`/${newUuid}`)
+    } catch (error) {
+      console.error('Error importing checklist:', error)
+      alert('Failed to import checklist. Please check the file format.')
+    } finally {
+      setIsImporting(false)
+      // Reset the file input
+      if (fileInputRef.current) {
+        fileInputRef.current.value = ''
+      }
+    }
+  }
+
+  const triggerFileInput = () => {
+    fileInputRef.current?.click()
+  }
+
   return (
     <div className={`bg-white dark:bg-gray-800 rounded-lg shadow-sm border border-gray-200 dark:border-gray-700 p-8 ${className}`}>
       <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-6">Create New Checklist</h2>
-      <div className="flex flex-col sm:flex-row gap-4">
+      
+      {/* Create new checklist section */}
+      <div className="flex flex-col sm:flex-row gap-4 mb-6">
         <input
           type="text"
           placeholder="Enter checklist name..."
           value={checklistName}
           onChange={(e) => setChecklistName(e.target.value)}
           onKeyDown={handleKeyDown}
-          disabled={isCreating}
+          disabled={isCreating || isImporting}
           className="flex-1 px-4 py-3 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100 dark:disabled:bg-gray-700 disabled:text-gray-500 dark:disabled:text-gray-400 bg-white dark:bg-gray-700 text-gray-900 dark:text-white placeholder-gray-500 dark:placeholder-gray-400"
         />
         <button 
           onClick={createChecklist} 
-          disabled={isCreating || !checklistName.trim()}
+          disabled={isCreating || isImporting || !checklistName.trim()}
           className="
             px-8 py-3 bg-blue-600 dark:bg-blue-500 text-white font-medium rounded-lg hover:bg-blue-700 dark:hover:bg-blue-600
             focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 disabled:opacity-50
@@ -71,6 +100,36 @@ export default function CreateChecklist({ className = '' }: CreateChecklistProps
           {isCreating ? 'Creating...' : 'Create'}
         </button>
       </div>
+
+      {/* Import section */}
+      <div className="border-t border-gray-200 dark:border-gray-700 pt-6">
+        <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">Import Checklist</h3>
+        <div className="flex flex-col sm:flex-row gap-4">
+          <div className="flex-1">
+            <p className="text-sm text-gray-600 dark:text-gray-400 mb-2">
+              Import a previously exported checklist JSON file
+            </p>
+            <input
+              ref={fileInputRef}
+              type="file"
+              accept=".json"
+              onChange={handleImportChecklist}
+              className="hidden"
+            />
+          </div>
+          <button 
+            onClick={triggerFileInput}
+            disabled={isCreating || isImporting}
+            className="
+              px-8 py-3 bg-green-600 dark:bg-green-500 text-white font-medium rounded-lg hover:bg-green-700 dark:hover:bg-green-600
+              focus:outline-none focus:ring-2 focus:ring-green-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 disabled:opacity-50
+              disabled:cursor-not-allowed transition-colors duration-200
+            "
+          >
+            {isImporting ? '📥 Importing...' : '📥 Import JSON'}
+          </button>
+        </div>
+      </div>
     </div>
   )
 } 
\ No newline at end of file
diff --git a/frontend/src/components/SavedChecklists.tsx b/frontend/src/components/SavedChecklists.tsx
index a482e9d..2525b1d 100644
--- a/frontend/src/components/SavedChecklists.tsx
+++ b/frontend/src/components/SavedChecklists.tsx
@@ -1,5 +1,5 @@
 import { Link } from 'react-router-dom'
-import { loadSavedChecklists } from '../hooks/useLocalStorage'
+import { loadSavedChecklists, exportChecklistToJSON } from '../hooks/useLocalStorage'
 import { useState } from 'react'
 
 interface SavedChecklistsProps {
@@ -8,12 +8,25 @@ interface SavedChecklistsProps {
 
 export default function SavedChecklists({ className = '' }: SavedChecklistsProps) {
   const [savedChecklists, setSavedChecklists] = useState<{ uuid: string; name: string; lastOpened?: string }[]>(loadSavedChecklists())
+  const [exportingChecklist, setExportingChecklist] = useState<string | null>(null)
+  
   const handleForgetCheckList = (uuid: string): void => {
     const updatedChecklists = savedChecklists.filter((checklist: { uuid: string }) => checklist.uuid !== uuid)
     localStorage.setItem('gocheck-saved-checklists', JSON.stringify(updatedChecklists))
     setSavedChecklists(updatedChecklists)
   }
 
+  const handleExportChecklist = async (uuid: string, name: string): Promise<void> => {
+    setExportingChecklist(uuid)
+    try {
+      await exportChecklistToJSON(uuid, name)
+    } catch (error) {
+      alert('Failed to export checklist')
+    } finally {
+      setExportingChecklist(null)
+    }
+  }
+
 
   if (savedChecklists.length === 0) {
     return (
@@ -67,6 +80,14 @@ export default function SavedChecklists({ className = '' }: SavedChecklistsProps
               >
                 📤 Share
               </button>
+              <button 
+                onClick={() => handleExportChecklist(checklist.uuid, checklist.name)}
+                disabled={exportingChecklist === checklist.uuid}
+                className="px-4 py-2 bg-purple-600 dark:bg-purple-500 text-white font-medium rounded-lg hover:bg-purple-700 dark:hover:bg-purple-600 focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 transition-colors duration-200 disabled:opacity-50 disabled:cursor-not-allowed"
+                title="Export checklist to JSON"
+              >
+                {exportingChecklist === checklist.uuid ? '📥 Exporting...' : '📥 Export'}
+              </button>
               <button 
                 onClick={() => handleForgetCheckList(checklist.uuid)}
                 className="px-4 py-2 bg-red-600 dark:bg-red-500 text-white font-medium rounded-lg hover:bg-red-700 dark:hover:bg-red-600 focus:outline-none focus:ring-2 focus:ring-red-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 transition-colors duration-200"
diff --git a/frontend/src/hooks/useLocalStorage.ts b/frontend/src/hooks/useLocalStorage.ts
index 6c2affa..44a77a8 100644
--- a/frontend/src/hooks/useLocalStorage.ts
+++ b/frontend/src/hooks/useLocalStorage.ts
@@ -1,4 +1,4 @@
-import type { SavedChecklist } from '../types'
+import type { SavedChecklist, ChecklistItem } from '../types'
 
 const STORAGE_KEY = 'gocheck-saved-checklists'
 
@@ -43,3 +43,162 @@ export const loadSavedChecklists = (): SavedChecklist[] => {
   }
   return []
 }
+
+export const exportChecklistToJSON = async (uuid: string, name: string): Promise<void> => {
+  try {
+    const response = await fetch(`/api/checklists/${uuid}/items`)
+    if (!response.ok) {
+      throw new Error('Failed to fetch checklist data')
+    }
+    
+    const data = await response.json()
+    if (!data.success || !data.items) {
+      throw new Error('Invalid response format')
+    }
+
+    const exportData = {
+      name: name,
+      uuid: uuid,
+      exportedAt: new Date().toISOString(),
+      items: data.items as ChecklistItem[]
+    }
+
+    const jsonString = JSON.stringify(exportData, null, 2)
+    const blob = new Blob([jsonString], { type: 'application/json' })
+    const url = URL.createObjectURL(blob)
+    
+    const link = document.createElement('a')
+    link.href = url
+    link.download = `${name.replace(/[^a-z0-9]/gi, '_').toLowerCase()}_${uuid}.json`
+    document.body.appendChild(link)
+    link.click()
+    document.body.removeChild(link)
+    URL.revokeObjectURL(url)
+  } catch (error) {
+    console.error('Error exporting checklist:', error)
+    throw error
+  }
+}
+
+interface ImportData {
+  name: string
+  uuid?: string
+  exportedAt?: string
+  items: ChecklistItem[]
+}
+
+export const importChecklistFromJSON = async (file: File): Promise<string> => {
+  try {
+    // Read the file
+    const text = await file.text()
+    const importData: ImportData = JSON.parse(text)
+    
+    // Validate the import data
+    if (!importData.name || !importData.items || !Array.isArray(importData.items)) {
+      throw new Error('Invalid import file format')
+    }
+
+    // Create a new checklist
+    const createResponse = await fetch('/api/checklists', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({ name: importData.name }),
+    })
+
+    if (!createResponse.ok) {
+      throw new Error('Failed to create checklist')
+    }
+
+    const createData = await createResponse.json()
+    if (!createData.success || !createData.uuid) {
+      throw new Error('Invalid response from checklist creation')
+    }
+
+    const newUuid = createData.uuid
+
+    // Create a mapping from old item IDs to new item IDs
+    const idMapping = new Map<number, number>()
+    
+    // First pass: Add all items and build the ID mapping
+    for (const item of importData.items) {
+      const addItemResponse = await fetch(`/api/checklists/${newUuid}/items`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          content: item.content,
+          parent_id: null, // We'll handle parent relationships in the second pass
+          not_before: item.not_before,
+          not_after: item.not_after,
+        }),
+      })
+
+      if (!addItemResponse.ok) {
+        throw new Error(`Failed to add item: ${item.content}`)
+      }
+
+      const addItemData = await addItemResponse.json()
+      if (!addItemData.success || !addItemData.item) {
+        throw new Error(`Invalid response when adding item: ${item.content}`)
+      }
+
+      const newItemId = addItemData.item.id
+      idMapping.set(item.id, newItemId)
+    }
+
+    // Second pass: Update parent relationships and dependencies
+    for (const item of importData.items) {
+      const newItemId = idMapping.get(item.id)
+      if (!newItemId) continue
+
+      const updates: Partial<ChecklistItem> = {}
+
+      // Handle parent relationships
+      if (item.parent_id !== null) {
+        const newParentId = idMapping.get(item.parent_id)
+        if (newParentId) {
+          updates.parent_id = newParentId
+        }
+      }
+
+      // Handle dependencies
+      if (item.dependencies && item.dependencies.length > 0) {
+        const newDependencies = item.dependencies
+          .map(oldDepId => idMapping.get(oldDepId))
+          .filter(newDepId => newDepId !== undefined) as number[]
+        
+        if (newDependencies.length > 0) {
+          updates.dependencies = newDependencies
+        }
+      }
+
+      // Update item if it was checked in the original
+      if (item.checked) {
+        updates.checked = true
+      }
+
+      // Apply updates if there are any
+      if (Object.keys(updates).length > 0) {
+        const updateResponse = await fetch(`/api/checklists/${newUuid}/items/${newItemId}`, {
+          method: 'PATCH',
+          headers: {
+            'Content-Type': 'application/json',
+          },
+          body: JSON.stringify(updates),
+        })
+
+        if (!updateResponse.ok) {
+          console.warn(`Failed to update item: ${item.content}`)
+        }
+      }
+    }
+
+    return newUuid
+  } catch (error) {
+    console.error('Error importing checklist:', error)
+    throw error
+  }
+}
diff --git a/frontend/src/pages/Checklist.tsx b/frontend/src/pages/Checklist.tsx
index 365ffc6..f74e2ee 100644
--- a/frontend/src/pages/Checklist.tsx
+++ b/frontend/src/pages/Checklist.tsx
@@ -3,6 +3,7 @@ import { useParams, Link } from 'react-router-dom'
 import { useSSE } from '../hooks/useSSE'
 import ChecklistItem from '../components/ChecklistItem'
 import { EditableTitle } from '../components/EditableTitle'
+import { exportChecklistToJSON } from '../hooks/useLocalStorage'
 import type { ChecklistItem as ChecklistItemType } from '../types'
 
 interface ItemGroup {
@@ -19,6 +20,7 @@ export default function Checklist() {
   const [newItemContent, setNewItemContent] = useState('')
   const [isAddingItem, setIsAddingItem] = useState(false)
   const [completedItemsCollapsed, setCompletedItemsCollapsed] = useState(false)
+  const [isExporting, setIsExporting] = useState(false)
 
 
   const buildItemTree = (items: ChecklistItemType[]): ChecklistItemType[] => {
@@ -232,6 +234,19 @@ export default function Checklist() {
     }
   }
 
+  const handleExportChecklist = async () => {
+    if (!uuid || !checkListName) return
+    
+    setIsExporting(true)
+    try {
+      await exportChecklistToJSON(uuid, checkListName)
+    } catch (error) {
+      alert('Failed to export checklist')
+    } finally {
+      setIsExporting(false)
+    }
+  }
+
 
 
   const renderGroupedItems = (allItems: ChecklistItemType[]) => {
@@ -377,6 +392,14 @@ export default function Checklist() {
               />
             </div>
             <div className="flex items-center gap-2">
+              <button 
+                onClick={handleExportChecklist}
+                disabled={isExporting || !isConnected}
+                className="px-3 py-1 bg-purple-600 dark:bg-purple-500 text-white font-medium rounded-lg hover:bg-purple-700 dark:hover:bg-purple-600 focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 transition-colors duration-200 disabled:opacity-50 disabled:cursor-not-allowed text-sm"
+                title="Export checklist to JSON"
+              >
+                {isExporting ? '📥 Exporting...' : '📥 Export'}
+              </button>
               {isConnected ? (
                 <span className="flex items-center gap-2 text-green-600 dark:text-green-400 bg-green-50 dark:bg-green-900/30 px-2 py-0.5 rounded-full text-sm font-medium">
                   <span className="w-2 h-2 bg-green-500 rounded-full"></span>
diff --git a/test-checklist.json b/test-checklist.json
new file mode 100644
index 0000000..2396dbc
--- /dev/null
+++ b/test-checklist.json
@@ -0,0 +1,47 @@
+{
+  "name": "Test Import Checklist",
+  "uuid": "test-uuid-123",
+  "exportedAt": "2024-01-01T12:00:00.000Z",
+  "items": [
+    {
+      "id": 1,
+      "content": "First item",
+      "checked": false,
+      "parent_id": null,
+      "checklist_uuid": "test-uuid-123",
+      "dependencies": [],
+      "not_before": null,
+      "not_after": null
+    },
+    {
+      "id": 2,
+      "content": "Second item (depends on first)",
+      "checked": false,
+      "parent_id": null,
+      "checklist_uuid": "test-uuid-123",
+      "dependencies": [1],
+      "not_before": null,
+      "not_after": null
+    },
+    {
+      "id": 3,
+      "content": "Child item",
+      "checked": true,
+      "parent_id": 1,
+      "checklist_uuid": "test-uuid-123",
+      "dependencies": [],
+      "not_before": null,
+      "not_after": null
+    },
+    {
+      "id": 4,
+      "content": "Item with date constraints",
+      "checked": false,
+      "parent_id": null,
+      "checklist_uuid": "test-uuid-123",
+      "dependencies": [2],
+      "not_before": "2024-01-01T10:00:00Z",
+      "not_after": "2024-01-01T14:00:00Z"
+    }
+  ]
+} 
\ No newline at end of file