Reverted import & fixed format

X-Lovable-Edit-ID: edt-eadd5108-90ff-4da6-a8f9-0525ec4588dc
Co-authored-by: renee-png <262607627+renee-png@users.noreply.github.com>

src/routes/settings.import.tsx

@@ -188,7 +188,7 @@ const IMPORTERS: ImporterConfig[] = [
     description: "Matters / cases linked to a client.",
     table: "cases",
     conflict: "external_id",
-    required: ["case_number", "title"],
+    required: ["title"],
     aliases: {
       // Identifiers
       id: "external_id", caseid: "external_id", externalid: "external_id", mycaseid: "external_id",
@@ -287,15 +287,9 @@ const IMPORTERS: ImporterConfig[] = [
         const bm = String(r.billing_method).toLowerCase();
         r.billing_method = bm.includes("flat") ? "flat" : bm.includes("contingency") ? "contingency" : bm.includes("hour") ? "hourly" : null;
       }
-      // Generate a collision-free case number when none was provided.
-      // Uses crypto.randomUUID so simultaneous rows in the same batch never collide.
-      if (!r.case_number || !String(r.case_number).trim()) {
-        const uid = (typeof crypto !== "undefined" && "randomUUID" in crypto)
-          ? crypto.randomUUID().slice(0, 8).toUpperCase()
-          : `${Date.now().toString(36)}${Math.floor(Math.random() * 1e6).toString(36)}`.toUpperCase();
-        r.case_number = `CASE-${uid}`;
-      }
-      if (!r.title) r.title = r.case_number;
+      // Leave case_number blank when missing — assigned in a sequential
+      // "YYYY-####" pass before insert (see below). Do not synthesize title
+      // from case_number; preserve the imported matter name as-is.
       return r;
     },
     postInsert: (rows, ctx) => {
@@ -1061,6 +1055,31 @@ function ImportPage() {
       return;
     }
 
+    // For cases: assign sequential "YYYY-####" numbers to any row missing a
+    // case_number, continuing from the highest existing number for the year.
+    if (cfg.table === "cases") {
+      const year = new Date().getFullYear();
+      const prefix = `${year}-`;
+      const { data: existing } = await supabase
+        .from("cases")
+        .select("case_number")
+        .like("case_number", `${prefix}%`);
+      let maxSeq = 0;
+      for (const row of (existing ?? []) as Array<{ case_number: string | null }>) {
+        const m = /^(\d{4})-(\d+)$/.exec(String(row.case_number ?? ""));
+        if (m && m[1] === String(year)) {
+          const n = parseInt(m[2], 10);
+          if (Number.isFinite(n) && n > maxSeq) maxSeq = n;
+        }
+      }
+      for (const r of mapped) {
+        if (!r.case_number || !String(r.case_number).trim()) {
+          maxSeq += 1;
+          r.case_number = `${prefix}${String(maxSeq).padStart(4, "0")}`;
+        }
+      }
+    }
+
     // Batch upsert in chunks of 200
     const chunkSize = 200;
     let inserted = 0;