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Feat: Add Save and Load Functionality #25

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Feat: Add Save and Load Functionality #25

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74 changes: 74 additions & 0 deletions src/App.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,7 @@ export default function App() {
const [loading, setLoading] = useState(false);
const stopGenerationRef = useRef(false);
const reactFlowWrapper = useRef(null);
const fileInputRef = useRef(null);

const handleExport = () => {
if (reactFlowWrapper.current) {
Expand All @@ -126,6 +127,40 @@ export default function App() {
}
};

const handleSave = () => {
const data = {
nodes,
edges,
};
const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
saveAs(blob, 'nodeverse-mindmap.json');
};

const handleLoad = (event) => {
if (window.confirm('Loading a new file will replace your current work. Are you sure?')) {
const file = event.target.files[0];
if (file && file.type === 'application/json') {
const reader = new FileReader();
reader.onload = (e) => {
try {
const { nodes: loadedNodes, edges: loadedEdges } = JSON.parse(e.target.result);
if (loadedNodes && loadedEdges) {
setNodes(loadedNodes);
setEdges(loadedEdges);
} else {
alert('Invalid JSON file.');
}
} catch (error) {
alert('Error loading file.');
}
};
reader.readAsText(file);
} else {
alert('Please select a JSON file.');
}
}
};

const handleSubmit = async () => {
if (!prompt.trim()) return;
setLoading(true);
Expand Down Expand Up @@ -246,6 +281,45 @@ export default function App() {
>
Export as PNG
</button>
<button
onClick={handleSave}
disabled={loading || nodes.length === 0}
style={{
padding: '10px 20px',
backgroundColor: '#2196F3',
color: 'white',
border: 'none',
borderRadius: '8px',
fontWeight: 'bold',
cursor: loading || nodes.length === 0 ? 'not-allowed' : 'pointer',
opacity: loading || nodes.length === 0 ? 0.7 : 1,
}}
>
Save
</button>
<input
type="file"
ref={fileInputRef}
style={{ display: 'none' }}
onChange={handleLoad}
accept=".json"
/>
<button
onClick={() => fileInputRef.current.click()}
disabled={loading}
style={{
padding: '10px 20px',
backgroundColor: '#FF9800',
color: 'white',
border: 'none',
borderRadius: '8px',
fontWeight: 'bold',
cursor: loading ? 'not-allowed' : 'pointer',
opacity: loading ? 0.7 : 1,
}}
>
Load
</button>
</div>
</div>

Expand Down