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- Initialize TypeScript project with Bolt.js and Octokit - Implement GitHub webhook handler with signature verification - Add AI agent using Gemini for PR analysis (Summary & Risk Score) - Create Slack notification system with interactive buttons - Implement Slack-to-GitHub actions: Review Diff, Approve, and Comment Co-authored-by: tuhinkanti <5673224+tuhinkanti@users.noreply.github.com>
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- Initialize TypeScript project with Bolt.js, Octokit, and Google Gemini - Implement GitHub webhook handler with signature verification and async processing - Integrate AI agent for PR analysis (Summary & Risk Score) - Create Slack notification system with interactive buttons - Implement Slack-to-GitHub actions: Review Diff (with pagination), Approve, and Comment - Fixes for ESM configuration and webhook timeouts Co-authored-by: tuhinkanti <5673224+tuhinkanti@users.noreply.github.com>
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| Diff: | ||
| ${diff.substring(0, 30000)} // Truncate to avoid token limits if necessary |
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🟡 JavaScript comment accidentally included in AI prompt string
The JavaScript comment // Truncate to avoid token limits if necessary is inside a template literal and gets included in the prompt sent to the Gemini AI model.
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Code at src/ai/agent.ts:31:
${diff.substring(0, 30000)} // Truncate to avoid token limits if necessarySince this is inside a template literal (backticks), the comment text is not treated as a JavaScript comment but as literal string content. This means every AI request includes the text // Truncate to avoid token limits if necessary as part of the prompt, which:
- Wastes tokens
- Could confuse the AI model's response
- Looks unprofessional if the AI references it
Expected: The comment should be outside the template literal or removed.
Actual: The comment text is sent as part of the prompt to Gemini.
Recommendation: Move the comment outside the template literal: ${diff.substring(0, 30000)} ; // Truncate to avoid token limits
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| await client.chat.postMessage({ | ||
| channel: body.channel?.id || '', |
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🔴 Empty channel ID passed to Slack API when channel context is missing
When body.channel is undefined (which can occur in certain Slack interaction contexts), the code passes an empty string as the channel ID to Slack API methods, causing the API call to fail.
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Code at src/slack/handlers.ts:23 and src/slack/handlers.ts:30:
channel: body.channel?.id || '',The Slack API does not accept an empty string as a channel ID. When body.channel is undefined, this fallback to '' will cause chat.postMessage and chat.postEphemeral to fail with an API error like channel_not_found.
Expected: Either validate that channel exists before making the call, or handle the missing channel case gracefully.
Actual: An empty string is passed, causing the Slack API call to fail.
Recommendation: Add a guard clause to check if body.channel?.id exists before attempting to post messages, or store the channel ID in the button value metadata when creating the initial message.
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- Initialize TypeScript project with Bolt.js, Octokit, and Google Gemini - Implement GitHub webhook handler with signature verification and async processing - Integrate AI agent for PR analysis (Summary & Risk Score) - Create Slack notification system with interactive buttons - Implement Slack-to-GitHub actions: Review Diff (with pagination), Approve, and Comment - Enhance Comment flow to post confirmation in Slack threads - Fixes for ESM configuration and webhook timeouts Co-authored-by: tuhinkanti <5673224+tuhinkanti@users.noreply.github.com>
- Initialize TypeScript project with Bolt.js, Octokit, and Google Gemini - Implement GitHub webhook handler with signature verification and async processing - Integrate AI agent for PR analysis (Summary & Risk Score) - Create Slack notification system with interactive buttons - Implement Slack-to-GitHub actions: Review Diff (with pagination), Approve, and Comment - Enhance Comment flow to post confirmation in Slack threads - Fix modal title length issue Co-authored-by: tuhinkanti <5673224+tuhinkanti@users.noreply.github.com>
| // Clean up the response to ensure it's valid JSON | ||
| const jsonString = responseText.replace(/```json/g, '').replace(/```/g, '').trim(); | ||
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| return JSON.parse(jsonString); |
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🟡 Unvalidated AI response can crash application with malformed JSON structure
The analyzeDiff function parses the AI response and returns it directly without validating that it conforms to the expected AnalysisResult interface.
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How it happens
At src/ai/agent.ts:41, the AI response is parsed and returned directly:
const jsonString = responseText.replace(/```json/g, '').replace(/```/g, '').trim();
return JSON.parse(jsonString);If the AI returns JSON that doesn't match the expected structure (e.g., {"summary": "text", "risk": "Unknown"} instead of {"summary": ["text"], "risk": "Low"}), the code at src/github/handlers.ts:53 will fail:
text: `*Summary:*\n${Array.isArray(analysis.summary) ? analysis.summary.map((s: string) => `• ${s}`).join('\n') : analysis.summary}`While there's a fallback for non-array summary, if risk is not one of the expected values or fields are missing entirely, downstream code could behave unexpectedly.
Impact
Malformed AI responses could cause runtime errors or display incorrect information in Slack messages.
Recommendation: Validate the parsed JSON structure before returning. Ensure summary is an array, risk is one of the expected values, and reason exists. Fall back to the error response if validation fails.
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1 participant
This PR implements the "Slack-First Code Review System" as described in the plan.
It establishes a bridge service that receives GitHub Pull Request webhooks, analyzes the changes using Google Gemini AI, and posts interactive notifications to Slack.
Users can then review diffs, approve PRs, and add comments directly from the Slack interface.
Key Components:
PR created automatically by Jules for task 3220839199327988510 started by @tuhinkanti