CSV Group updates

lib/edl-utils.ts

@@ -192,6 +192,7 @@ export interface SimpleCsvRow {
   seqTimecodeStart: string;
   seqTimecodeEnd: string;
   description: string;
+  group: string;
   action: "create" | "update" | "skip";
 }
 
@@ -222,6 +223,7 @@ export function parseSimpleCsv(
   const tcInIdx     = col(["time code in", "timecode in", "tc in", "tcin", "timecode start", "tc start"]);
   const tcOutIdx    = col(["time code out", "timecode out", "tc out", "tcout", "timecode end", "tc end"]);
   const descIdx     = col(["description", "desc", "notes", "note"]);
+  const groupIdx    = col(["group", "shot group", "shotgroup", "group name"]);
 
   if (shotNameIdx === -1) {
     return { rows: [], errors: ['CSV must contain a "Shot Name" (or "Shot Code") column'] };
@@ -255,9 +257,72 @@ export function parseSimpleCsv(
       seqTimecodeStart: tcIn,
       seqTimecodeEnd:   tcOut,
       description:      get(descIdx),
+      group:            get(groupIdx),
       action: existingCodes.has(shotCode) ? "update" : "create",
     });
   }
 
   return { rows, errors };
 }
+
+// ── Group Assignment CSV ──────────────────────────────────────────────────────
+
+export interface GroupAssignRow {
+  shotCode: string;
+  groupName: string;
+  exists: boolean;
+}
+
+/**
+ * Parse a group-assignment CSV: Shot Name, Group.
+ * Only shots that already exist in the project will be updated.
+ */
+export function parseGroupAssignCsv(
+  csvText: string,
+  existingCodes: Set<string>
+): { rows: GroupAssignRow[]; errors: string[] } {
+  const lines = csvText.split(/\r?\n/).map((l) => l.trim()).filter(Boolean);
+  if (lines.length < 2) {
+    return { rows: [], errors: ["CSV must have a header row and at least one data row"] };
+  }
+
+  const rawHeaders = parseCsvLine(lines[0]).map((h) => h.toLowerCase().trim());
+  const col = (names: string[]) => {
+    for (const name of names) {
+      const idx = rawHeaders.indexOf(name);
+      if (idx !== -1) return idx;
+    }
+    return -1;
+  };
+
+  const shotNameIdx = col(["shot name", "shot code", "shotcode", "shot", "name"]);
+  const groupIdx    = col(["group", "shot group", "shotgroup", "group name"]);
+
+  if (shotNameIdx === -1) {
+    return { rows: [], errors: ['CSV must contain a "Shot Name" (or "Shot Code") column'] };
+  }
+  if (groupIdx === -1) {
+    return { rows: [], errors: ['CSV must contain a "Group" column'] };
+  }
+
+  const rows: GroupAssignRow[] = [];
+  const errors: string[] = [];
+  const seen = new Set<string>();
+
+  for (let i = 1; i < lines.length; i++) {
+    const cells = parseCsvLine(lines[i]);
+    const get = (idx: number) =>
+      idx !== -1 && idx < cells.length ? (cells[idx] ?? "").trim() : "";
+
+    const shotCode  = get(shotNameIdx);
+    const groupName = get(groupIdx);
+    if (!shotCode)  { errors.push(`Row ${i + 1}: empty Shot Name — skipped`); continue; }
+    if (!groupName) { errors.push(`Row ${i + 1} (${shotCode}): empty Group — skipped`); continue; }
+    if (seen.has(shotCode)) continue;
+    seen.add(shotCode);
+
+    rows.push({ shotCode, groupName, exists: existingCodes.has(shotCode) });
+  }
+
+  return { rows, errors };
+}