Merge pull request 'Fix when people order multiple times' (#26) from development into main

Reviewed-on: #26

src/routes/private/events/event/view/+page.svelte

@@ -138,35 +138,64 @@
 
 			if (rows.length === 0) throw new Error('No data found in sheet');
 
-			// Extract participant data based on column mapping
-			const names: string[] = [];
-			const surnames: string[] = [];
-			const emails: string[] = [];
+			// --- Start of new logic to handle duplicates ---
 
-			// Skip header row (start from index 1)
+			// First, extract all potential participants from the sheet
+			const potentialParticipants = [];
 			for (let i = 1; i < rows.length; i++) {
 				const row = rows[i];
 				if (row.length > 0) {
 					const name = row[event.name_column - 1] || '';
 					const surname = row[event.surname_column - 1] || '';
-					const email = row[event.email_column - 1] || '';
+					const email = (row[event.email_column - 1] || '').trim();
 					const confirmation = row[event.confirmation_column - 1] || '';
 
-					// Only add if the row has meaningful data (not all empty) AND confirmation is TRUE
 					const isConfirmed =
 						confirmation.toString().toLowerCase() === 'true' ||
 						confirmation.toString().toLowerCase() === 'yes' ||
 						confirmation === '1' ||
 						confirmation === 'x';
 
-					if ((name.trim() || surname.trim() || email.trim()) && isConfirmed) {
-						names.push(name.trim());
-						surnames.push(surname.trim());
-						emails.push(email.trim());
+					if ((name.trim() || surname.trim() || email) && isConfirmed) {
+						potentialParticipants.push({ name: name.trim(), surname: surname.trim(), email });
 					}
 				}
 			}
 
+			// Create a map to count occurrences of each unique participant combination
+			const participantCounts = new Map<string, number>();
+			for (const p of potentialParticipants) {
+				const key = `${p.name}|${p.surname}|${p.email}`.toLowerCase(); // Create a unique key
+				participantCounts.set(key, (participantCounts.get(key) || 0) + 1);
+			}
+
+			// Create final arrays, modifying duplicate surnames to be unique
+			const names: string[] = [];
+			const surnames: string[] = [];
+			const emails: string[] = [];
+			const processedParticipants = new Map<string, number>();
+
+			for (const p of potentialParticipants) {
+				const key = `${p.name}|${p.surname}|${p.email}`.toLowerCase();
+				let finalSurname = p.surname;
+
+				// If this participant is a duplicate
+				if (participantCounts.get(key)! > 1) {
+					const count = (processedParticipants.get(key) || 0) + 1;
+					processedParticipants.set(key, count);
+
+					// If it's not the first occurrence, append a counter to the surname
+					if (count > 1) {
+						finalSurname = `${p.surname} (${count})`;
+					}
+				}
+
+				names.push(p.name);
+				surnames.push(finalSurname);
+				emails.push(p.email); // Keep the original email
+			}
+			// --- End of new logic ---
+
 			// Call database function to add participants
 			const { error: syncError } = await data.supabase.rpc('participants_add_bulk', {
 				p_event: eventId,