fix(rgi): diagnostic download route — tries multiple URL patterns

Download route now:
- Calls fileVisibility with documentTypeId (if provided)
- Calls confirmOnView with documentPk
- Tries 3 different download URL patterns until one works
- Add &debug=1 to see diagnostic results instead of downloading
- Page now passes documentTypeId in download link

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/api/eterra/rgi/download-doc/route.ts

@@ -5,18 +5,23 @@ export const runtime = "nodejs";
 export const dynamic = "force-dynamic";
 
 /**
- * GET /api/eterra/rgi/download-doc?workspaceId=127&applicationId=X&documentPk=Y
+ * GET /api/eterra/rgi/download-doc?workspaceId=127&applicationId=X&documentPk=Y&documentTypeId=Z
  *
  * Downloads an issued document from eTerra RGI.
- * 2-step flow:
- *   1. confirmOnView/{wid}/{appId}/{documentPk}
- *   2. loadDocument/downloadFile/{wid}/{documentPk}
+ * Flow:
+ *   1. fileVisibility/{wid}/{appId}/{documentTypeId} — get file info
+ *   2. confirmOnView/{wid}/{appId}/{documentPk}
+ *   3. loadDocument/downloadFile/{wid}/{documentPk}
+ *
+ * Add &debug=1 to see diagnostic info instead of downloading.
  */
 export async function GET(req: NextRequest) {
   try {
     const workspaceId = req.nextUrl.searchParams.get("workspaceId");
     const applicationId = req.nextUrl.searchParams.get("applicationId");
     const documentPk = req.nextUrl.searchParams.get("documentPk");
+    const documentTypeId = req.nextUrl.searchParams.get("documentTypeId");
+    const debug = req.nextUrl.searchParams.get("debug") === "1";
 
     if (!workspaceId || !applicationId || !documentPk) {
       return NextResponse.json(
@@ -32,29 +37,89 @@ export async function GET(req: NextRequest) {
     }
 
     const client = await EterraClient.create(username, password);
+    const results: Record<string, unknown> = {};
 
-    // Step 1: Confirm on view
-    try {
-      await client.rgiGet(
-        `rgi/appdetail/issueddocs/confirmOnView/${workspaceId}/${applicationId}/${documentPk}`,
-      );
-    } catch {
-      // Non-critical — continue to download
+    // Step 1: fileVisibility (if documentTypeId provided)
+    if (documentTypeId) {
+      try {
+        const vis = await client.rgiGet(
+          `rgi/appdetail/issueddocs/fileVisibility/${workspaceId}/${applicationId}/${documentTypeId}`,
+        );
+        results.fileVisibility = vis;
+      } catch (e) {
+        results.fileVisibilityError = e instanceof Error ? e.message : String(e);
+      }
     }
 
-    // Step 2: Download file
-    const { data, contentType, filename } = await client.rgiDownload(
-      `rgi/appdetail/loadDocument/downloadFile/${workspaceId}/${documentPk}`,
-    );
+    // Step 2: confirmOnView
+    try {
+      const confirm = await client.rgiGet(
+        `rgi/appdetail/issueddocs/confirmOnView/${workspaceId}/${applicationId}/${documentPk}`,
+      );
+      results.confirmOnView = confirm;
+    } catch (e) {
+      results.confirmOnViewError = e instanceof Error ? e.message : String(e);
+    }
 
-    return new NextResponse(new Uint8Array(data), {
-      status: 200,
-      headers: {
-        "Content-Type": contentType,
-        "Content-Disposition": `attachment; filename="${encodeURIComponent(filename)}"`,
-        "Content-Length": String(data.length),
-      },
-    });
+    if (debug) {
+      // Try multiple download URL patterns to find the right one
+      const patterns = [
+        `rgi/appdetail/loadDocument/downloadFile/${workspaceId}/${documentPk}`,
+        `rgi/appdetail/issueddocs/downloadFile/${workspaceId}/${applicationId}/${documentPk}`,
+        `rgi/appdetail/issueddocs/download/${workspaceId}/${applicationId}/${documentPk}`,
+      ];
+
+      for (const pattern of patterns) {
+        try {
+          const { data, contentType, filename } = await client.rgiDownload(pattern);
+          results[`download_${pattern.split('/').slice(-1)[0]}`] = {
+            success: true,
+            contentType,
+            filename,
+            size: data.length,
+            pattern,
+          };
+        } catch (e) {
+          results[`download_${pattern.split('/').slice(-1)[0]}`] = {
+            success: false,
+            error: e instanceof Error ? e.message : String(e),
+            pattern,
+          };
+        }
+      }
+
+      return NextResponse.json(results, { status: 200 });
+    }
+
+    // Step 3: Download — try multiple patterns
+    const downloadPatterns = [
+      `rgi/appdetail/loadDocument/downloadFile/${workspaceId}/${documentPk}`,
+      `rgi/appdetail/issueddocs/downloadFile/${workspaceId}/${applicationId}/${documentPk}`,
+      `rgi/appdetail/issueddocs/download/${workspaceId}/${applicationId}/${documentPk}`,
+    ];
+
+    for (const pattern of downloadPatterns) {
+      try {
+        const { data, contentType, filename } = await client.rgiDownload(pattern);
+        if (data.length > 0) {
+          return new NextResponse(new Uint8Array(data), {
+            status: 200,
+            headers: {
+              "Content-Type": contentType,
+              "Content-Disposition": `attachment; filename="${encodeURIComponent(filename)}"`,
+              "Content-Length": String(data.length),
+            },
+          });
+        }
+      } catch {
+        // Try next pattern
+      }
+    }
+
+    return NextResponse.json(
+      { error: "Download failed — all URL patterns returned errors", diagnostics: results },
+      { status: 500 },
+    );
   } catch (error) {
     const message = error instanceof Error ? error.message : "Eroare server";
     return NextResponse.json({ error: message }, { status: 500 });