feat: refactor Radicale contact sync logic to include retry mechanism and improve error handling

src/lib/radicale-sync.js

@@ -138,6 +138,58 @@ export function isRadicaleEnabled() {
 	return getRadicaleConfig() !== null;
 }
 
+// Sync contact to Radicale (internal function with retry logic)
+async function syncContactToRadicaleInternal(contact, forceUpdate = false) {
+	const config = getRadicaleConfig();
+	
+	// Skip if not configured
+	if (!config) {
+		return { success: false, reason: 'not_configured' };
+	}
+	
+	try {
+		const vcard = generateVCard(contact);
+		const auth = Buffer.from(`${config.username}:${config.password}`).toString('base64');
+		
+		// Ensure URL ends with /
+		const baseUrl = config.url.endsWith('/') ? config.url : config.url + '/';
+		
+		// Construct the URL for this specific contact
+		const vcardUrl = `${baseUrl}${config.username}/contacts/contact-${contact.contact_id}.vcf`;
+		
+		const headers = {
+			'Authorization': `Basic ${auth}`,
+			'Content-Type': 'text/vcard; charset=utf-8'
+		};
+		
+		// If not forcing update, only create if doesn't exist
+		if (!forceUpdate) {
+			headers['If-None-Match'] = '*';
+		}
+		
+		const response = await fetch(vcardUrl, {
+			method: 'PUT',
+			headers: headers,
+			body: vcard
+		});
+		
+		// Handle conflict - try again with force update
+		if (response.status === 412 || response.status === 409) {
+			// Conflict - contact already exists, update it instead
+			return await syncContactToRadicaleInternal(contact, true);
+		}
+		
+		if (response.ok || response.status === 201 || response.status === 204) {
+			return { success: true, status: response.status, updated: forceUpdate };
+		} else {
+			const text = await response.text();
+			return { success: false, status: response.status, error: text };
+		}
+	} catch (error) {
+		return { success: false, error: error.message };
+	}
+}
+
 // Sync contact to Radicale
 export async function syncContactToRadicale(contact) {
 	const config = getRadicaleConfig();
@@ -154,37 +206,16 @@ export async function syncContactToRadicale(contact) {
 		return { success: true, reason: 'inactive_skipped' };
 	}
 	
-	try {
-		const vcard = generateVCard(contact);
-		const auth = Buffer.from(`${config.username}:${config.password}`).toString('base64');
-		
-		// Ensure URL ends with /
-		const baseUrl = config.url.endsWith('/') ? config.url : config.url + '/';
-		
-		// Construct the URL for this specific contact
-		const vcardUrl = `${baseUrl}${config.username}/contacts/contact-${contact.contact_id}.vcf`;
-		
-		const response = await fetch(vcardUrl, {
-			method: 'PUT',
-			headers: {
-				'Authorization': `Basic ${auth}`,
-				'Content-Type': 'text/vcard; charset=utf-8'
-			},
-			body: vcard
-		});
-		
-		if (response.ok || response.status === 201 || response.status === 204) {
-			console.log(`✅ Synced contact ${contact.contact_id} to Radicale`);
-			return { success: true, status: response.status };
-		} else {
-			const text = await response.text();
-			console.error(`❌ Failed to sync contact ${contact.contact_id} to Radicale: ${response.status} - ${text}`);
-			return { success: false, status: response.status, error: text };
-		}
-	} catch (error) {
-		console.error(`❌ Error syncing contact ${contact.contact_id} to Radicale:`, error);
-		return { success: false, error: error.message };
+	const result = await syncContactToRadicaleInternal(contact);
+	
+	if (result.success) {
+		const action = result.updated ? 'updated' : 'created';
+		console.log(`✅ Synced contact ${contact.contact_id} to Radicale (${action})`);
+	} else if (result.reason !== 'not_configured') {
+		console.error(`❌ Failed to sync contact ${contact.contact_id} to Radicale: ${result.status} - ${result.error || result.reason}`);
 	}
+	
+	return result;
 }
 
 // Delete contact from Radicale
@@ -229,6 +260,7 @@ export async function deleteContactFromRadicale(contactId) {
 
 // Sync contact asynchronously (fire and forget)
 export function syncContactAsync(contact) {
+	console.log(contact, isRadicaleEnabled());
 	if (!isRadicaleEnabled()) {
 		return;
 	}