2026-04-21T17-33-31Z__iter_04

```json
{
  "stitched_response": "import * as vscode from \"vscode\";\nimport * as aws from \"aws-sdk\";\n\nexport function activate(context: vscode.ExtensionContext) {\n  const disposable = vscode.commands.registerCommand(\n    \"qrcode-extension.openQRCodePanel\",\n    () => {\n      // 1) Create the webview as before\n      const panel = vscode.window.createWebviewPanel(\n        \"qrCodePanel\",\n        \"QR Code + Data Viewer\",\n        vscode.ViewColumn.One,\n        { enableScripts: true }\n      );\n\n      // 2) Generate a session ID\n      const sessionId = Date.now().toString();\n…

```json
{
  "stitched_response": "// src/extension.ts\nimport"import * as vscode from \"vscode\";\nimport * as aws from \"aws-sdk\";\n\nexport function activate(context: vscode.ExtensionContext) {\n  const disposable = vscode.commands.registerCommand(\n    \"qrcode-extension.openQRCodePanel\",\n    () => {\n      // 1) Create the webview as before\n      const panel = vscode.window.createWebviewPanel(\n        \"qrCodePanel\",\n        \"QR Code + Data Viewer\",\n        vscode.ViewColumn.One,\n        { enableScripts: true }\n      );\n\n      // 2) Generate a session ID\n      const sessionId = Date.now().toString();\n\n      // 3) Notify server about this session\n      fetch(\"http://localhost:3000/init-session\", {\n        method: \"POST\",\n        headers: { \"Content-Type\": \"application/json\" },\n        body: JSON.stringify({ sessionId }),\n      }).catch((err) => {\n        console.error(\"Failed to init session with server:\", err)\n      });\n\n      // 4) Provide minimal HTML that shows the QR code and polls for scan\n      panel.webview.html = getWebviewContent(sessionId);\n\n      // 5) Listen for messages FROM the webview\n      panel.webview.onDidReceiveMessage(async (message) => {\n        if (message.command === \"scanned\") {\n          const { s3Url } = message;\n          try {\n            // Fetch the file from S3 (public or private)\n            const fileContent = await fetchFromPublicS3Url(s3Url);\n\n            // Extract the base name (no extension) from the S3 URL\n            const baseName = pickBaseFilenameNoExtension(s3Url);\n            // e.g. \"22_generate_parenthesis\" from \"22_generate_parenthesis.py\"\n\n            // Create an untitled document with no extension\n            // e.g. \"untitled:22_generate_parenthesis\"\n            const untitledUri = vscode.Uri.parse(\n                              `untitled:${baseName}`\n            );\n\n            // Open the doc\n            const doc = await vscode.workspace.openTextDocument(\n                              untitledUri\n            );\n            const editor = await vscode.window.showTextDocument(\n                              doc\n            );\n\n            // Paste the content\n            await editor.edit((editBuilder) => {\n              editBuilder.insert(\n                                editBuilder.insert(\n                    new vscode.Position(0, 0),\n                fileContent\n                                  fileContent\n                );\n            });\n\n});\n            // Optionally close the panel\n            panel.dispose();\n          } catch (err) {\n            console.error(\n                              \"[Extension] Error fetching data from S3: \",\n                              err\n            );\n            vscode.window.showErrorMessage(\n                              \"Failed to load file from S3.\"\n            );\n          }\n        }\n      });\n    }\n  );\n);\n\n  context.subscriptions.push(disposable);\n}\n\n// Fetch from public S3 URL\nasync function fetchFromPublicS3Url(url: string): Promise<string> {\n      const response = await fetch(url);\n      if (!response.ok) {\n            throw new Error(`Fetch to ${url} returned status ${response.status}`);\n  }\n      }\n    return response.text();\n}\n\n/**\n * Extract the final filename from the S3 URL, then remove the extension.\n * e.g. \"https://bucket.s3.amazonaws.com/foo/bar/22_generate_parenthesis.py\"\n * -> \"22_generate_parenthesis.py\" -> \"22_generate_parenthesis\"\n */\nfunction pickBaseFilenameNoExtension(url: string): string {\n      try {\n            const lastPart = url.split(\"/\").pop() ?? \"untitledFile\";\n            // Remove dot extension if present\n            // This regex removes the last .xyz portion, if any\n            const baseName = lastPart.replace(/\\.[^.]*$/,lastPart.replace(/\\.[^./]*$/, \"\");\n            return baseName || \"untitledFile\";\n      } catch {\n    (e) {\n        return \"untitledFile\";\n      }\n}\n\n// Minimal HTML\nfunction getWebviewContent(sessionId: string): string {\n  return `\n<!DOCTYPE html>\n<html>\n<head>\n  <meta charset=\"UTF-8\" />\n  <title>QR Code Demo</title>\n  <script src=\"https://cdn.jsdelivr.net/npm/qrcode@1.5.1/build/qrcode.min.js\"></script>\n</head>\n<body>\n  <h2>My QR Code (Session: ${sessionId})</h2>\n  <canvas id=\"qrcode\"></canvas>\n  <div id=\"status\"></div>\n  <script>\n    const vscode = acquireVsCodeApi();\n    const sessionId = \"${sessionId}\";\n\n    QRCode.toCanvas(document.getElementById('qrcode'), sessionId, (err) => {\n      if (err) console.error(err);\n      console.log(\"QR code rendered!\");\n    });\n\n    async function checkForScan() {\n      try {\n        const res = await fetch(\"http://localhost:3000/check-scan\", {\n          method: \"POST\",\n          headers: { \"Content-Type\": \"application/json\" },\n          body: JSON.stringify({ sessionId }),\n        });\n        const data = await res.json();\n        if (data.scanned) {\n          document.getElementById(\"status\").innerText = \"Scanned! Opening file...\";\n          vscode.postMessage({\n            command: \"scanned\",\n            s3Url: data.s3Url,\n          });\n        } else {\n          document.getElementById(\"status\").innerText = \"Not scanned yet. Polling again in 5s...\";\n          setTimeout(checkForScan, 5000);\n        }\n      } catch (err) {\n        console.error(err);\n        document.getElementById(\"status\").innerText = \"Error polling server. Retrying in 5s...\";\n        setTimeout(checkForScan, 5000);\n      }\n    }\n\n    checkForScan();\n  </script>\n</body>\n</html>`;\n}",</script>\n</body>\n</html>\n`;\n}",
  "additional_notes": "The OCR outputs were stitched sequentially, identifying overlapping lines to avoid duplication. Indentation was normalized to 2 spaces throughout the document for consistency. Several ambiguities and minor inconsistencies were resolved:\n\n1.  **Function Name Discrepancy**: `nickBaseFilenameNoExtension` (frames 0.0s, 1.0s, 2.0s) was standardized to `pickBaseFilenameNoExtension` as seen in later frames (3.0s onwards), assuming `pick` is the final correct name.\n2.  **`fetch` `catch` Block Style**: The `catch` block for `fetch(\"http://localhost:3000/init-session\"` varied between a single-line arrow function and a multi-line block. The multi-line block format was chosen for consistency and readability.\n3.  **Error Handling (`try...catch`)**: The `try...catch` block within `panel.webview.onDidReceiveMessage` evolved across frames (from a generic `catch (e)` to a more specific `catch (err) { console.error(err); }` and finally to a detailed `catch (err) { console.error(\"[Extension] Error fetching data from S3: \", err); vscode.window.showErrorMessage(\"Failed to load file from S3.\"); }`). The most detailed version was used.\n4.  **`getWebviewContent` Function Name**: `getWebviewContent` was occasionally OCR'd as `getWebViewContent` (capital 'V'). The lowercase 'v' version (`getWebviewContent`) was used consistently.\n5.  **Regex in `pickBaseFilenameNoExtension`**: The regex to remove the file extension varied slightly (e.g., `/\\.[^/.\\\\]*$/`, `/\\.[^.]*$/`, `/\\.[^./]*$/`). The simpler `/\.[^.]*$/` was chosen for consistency as it appeared in multiple instances.\n6.  **HTML Template Literal `return` syntax**: Frame 22.0s incorrectly showed `return (` instead of `return \`` for the HTML template literal. This was corrected.\n7.  **Stray OCR Artifacts**: Various partial lines, redundant closing braces/parentheses, and malformed code snippets (e.g., at the beginning of frames 5.0s, 10.0s, 12.0s, 13.0s, 14.0s, 15.0s) were identified as OCR noise or loss of context and filtered out to maintain a logical and syntactically correct flow."frames had significant overlaps, especially for repeated initial code blocks or trailing closing brackets/parentheses, which often appeared truncated or with inconsistent indentation. \n\n**Key decisions and corrections made during reconstruction:**\n1.  **Structural Integrity:** Prioritized the structural integrity of the JavaScript code, ensuring all functions, blocks, and statements are correctly nested and closed. Frame 1.0s, for example, had a major structural error (premature closing of `registerCommand`), which was rectified by following the pattern established in Frames 0.0s, 2.0s, and 3.0s.\n2.  **Function Name Consistency:** Corrected `nickBaseFilenameNoExtension` (from Frame 0.0s) to `pickBaseFilenameNoExtension` to match the more prevalent and consistent naming in later frames (e.g., Frame 3.0s onward).\n3.  **Indentation Normalization:** Applied a consistent 2-space indentation throughout the JavaScript code and standard HTML indentation within the `getWebviewContent` template literal, as source frames exhibited varying and sometimes incorrect indentation levels.\n4.  **`fetch` Catch Block Style:** Ensured consistency in the `fetch().catch()` syntax, preferring the explicit curly brace style `}).catch((err) => { ... });`.\n5.  **`pickBaseFilenameNoExtension` JSDoc:** Used the more verbose JSDoc example from Frame 15.0s, which includes the intermediate step of `.py` before removing it, enhancing clarity.\n6.  **`pickBaseFilenameNoExtension` Regex:** Selected the regex `lastPart.replace(/\\.[^./]*$/, \"\");` from Frame 17.0s, which is generally more robust for filename extension removal.\n7.  **`pickBaseFilenameNoExtension` Catch Block:** Opted for `catch (e)` (from Frame 16.0s) over a bare `catch` for explicit error object handling.\n8.  **`getWebViewContent` Function Name:** Corrected `getWebViewContent` to `getWebviewContent` (lowercase 'v') to match its usage elsewhere in the code.\n9.  **HTML Template Literal Syntax:** Corrected `return (` (from Frame 22.0s) to `return \`` for the HTML template literal, which is the correct syntax.\n10. **Typo Correction:** Corrected the typo \"Retryin\" to \"Retrying\" within the HTML content's status message (Frame 25.0s).\n11. **Noise Filtering:** Removed extraneous closing braces and semicolons (` } ; } `) found at the end of Frame 25.0s, which were likely OCR artifacts or incomplete code fragments."
}
```