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* Optimized storage system using IndexedDB for binary data and
* localStorage for small configuration
*/
// IndexedDB setup
const dbPromise = () => {
return new Promise((resolve, reject) => {
const request = indexedDB.open('text0wnz', 3);
request.onupgradeneeded = e => {
const db = e.target.result;
// Create object stores if they don't exist
if (!db.objectStoreNames.contains('canvasData')) {
db.createObjectStore('canvasData');
}
if (!db.objectStoreNames.contains('fontData')) {
db.createObjectStore('fontData');
}
if (!db.objectStoreNames.contains('undoHistory')) {
db.createObjectStore('undoHistory');
}
};
request.onsuccess = e => resolve(e.target.result);
request.onerror = e => reject(e.target.error);
});
};
// Storage API
export const Storage = {
/**
* Save canvas state to IndexedDB
*/
async saveCanvasData(data) {
try {
const db = await dbPromise();
const tx = db.transaction('canvasData', 'readwrite');
const store = tx.objectStore('canvasData');
// Store canvas data directly as Uint16Array - more efficient than conversion
await new Promise((resolve, reject) => {
const request = store.put(data, 'currentCanvas');
request.onsuccess = () => resolve();
request.onerror = () => reject(request.error);
});
return true;
} catch (error) {
console.error('[Storage] Error saving canvas data:', error);
return false;
}
},
/**
* Load canvas state from IndexedDB
*/
async loadCanvasData() {
try {
const db = await dbPromise();
const tx = db.transaction('canvasData', 'readonly');
const store = tx.objectStore('canvasData');
return await new Promise((resolve, reject) => {
const request = store.get('currentCanvas');
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
} catch (error) {
console.error('[Storage] Error loading canvas data:', error);
return null;
}
},
/**
* Save font data to IndexedDB
*/
async saveFontData(fontName, fontData) {
try {
const db = await dbPromise();
const tx = db.transaction('fontData', 'readwrite');
const store = tx.objectStore('fontData');
await new Promise((resolve, reject) => {
const request = store.put(fontData, fontName);
request.onsuccess = () => resolve();
request.onerror = () => reject(request.error);
});
return true;
} catch (error) {
console.error('[Storage] Error saving font data:', error);
return false;
}
},
/**
* Load font data from IndexedDB
*/
async loadFontData(fontName) {
try {
const db = await dbPromise();
const tx = db.transaction('fontData', 'readonly');
const store = tx.objectStore('fontData');
return await new Promise((resolve, reject) => {
const request = store.get(fontName);
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
} catch (error) {
console.error('[Storage] Error loading font data:', error);
return null;
}
},
/**
* Save undo history to IndexedDB
*/
async saveUndoHistory(undoHistory) {
try {
const db = await dbPromise();
const tx = db.transaction('undoHistory', 'readwrite');
const store = tx.objectStore('undoHistory');
await new Promise((resolve, reject) => {
const request = store.put(undoHistory, 'currentUndoHistory');
request.onsuccess = () => resolve();
request.onerror = () => reject(request.error);
});
return true;
} catch (error) {
console.error('[Storage] Error saving undo history:', error);
return false;
}
},
/**
* Load undo history from IndexedDB
*/
async loadUndoHistory() {
try {
const db = await dbPromise();
const tx = db.transaction('undoHistory', 'readonly');
const store = tx.objectStore('undoHistory');
return await new Promise((resolve, reject) => {
const request = store.get('currentUndoHistory');
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
} catch (error) {
console.error('[Storage] Error loading undo history:', error);
return null;
}
},
/**
* Save lightweight settings to localStorage
*/
saveSettings(settings) {
try {
localStorage.setItem('text0wnz-settings', JSON.stringify(settings));
return true;
} catch (error) {
console.error('[Storage] Error saving settings:', error);
return false;
}
},
/**
* Load lightweight settings from localStorage
*/
loadSettings() {
try {
const settings = localStorage.getItem('text0wnz-settings');
return settings ? JSON.parse(settings) : null;
} catch (error) {
console.error('[Storage] Error loading settings:', error);
return null;
}
},
/**
* Clear all storage
*/
async clearAll() {
// Clear localStorage
localStorage.removeItem('text0wnz-settings');
localStorage.removeItem('editorState'); // Clear legacy data
// Clear IndexedDB
try {
const db = await dbPromise();
const tx1 = db.transaction('canvasData', 'readwrite');
const store1 = tx1.objectStore('canvasData');
store1.clear();
const tx2 = db.transaction('fontData', 'readwrite');
const store2 = tx2.objectStore('fontData');
store2.clear();
const tx3 = db.transaction('undoHistory', 'readwrite');
const store3 = tx3.objectStore('undoHistory');
store3.clear();
return true;
} catch (error) {
console.error('[Storage] Error clearing storage:', error);
return false;
}
},
};
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