refactor: 라인별 코드리뷰로 변경 #47

Workflow file for this run

.github/workflows/gemini_review.yml at db3191b

	name: Gemini Automated Code Review

	on:
	pull_request:
	types: [opened, reopened, synchronize]
	branches:
	- main

	workflow_dispatch:
	inputs:
	pr_number:
	description: "리뷰할 PR 번호 (기존 PR 수동 리뷰 시 입력)"
	required: false

	jobs:
	code_review:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	pull-requests: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Set up Node.js
	uses: actions/setup-node@v4
	with:
	node-version: 20

	- name: Install GoogleGenerativeAI SDK
	run: npm install @google/generative-ai@latest

	- name: Determine PR Info
	id: pr_info
	uses: actions/github-script@v7
	with:
	script: \|
	let pr_number;

	if (context.eventName === "workflow_dispatch") {
	pr_number = context.payload.inputs["pr_number"];
	if (!pr_number) {
	core.setFailed("❌ 수동 실행 시에는 PR 번호 입력이 필요합니다.");
	return;
	}
	} else {
	pr_number = context.payload.pull_request.number;
	}

	console.log(`🔍 리뷰할 PR 번호: ${pr_number}`);

	const { data: pr } = await github.rest.pulls.get({
	owner: context.repo.owner,
	repo: context.repo.repo,
	pull_number: pr_number
	});

	console.log(`📂 base: ${pr.base.ref}, head: ${pr.head.ref}`);

	core.setOutput("number", pr_number);
	core.setOutput("base", pr.base.ref);
	core.setOutput("head", pr.head.ref);

	- name: Generate Git Diff for PR
	run: \|
	echo "📂 base: ${{ steps.pr_info.outputs.base }}"
	echo "📂 head: ${{ steps.pr_info.outputs.head }}"
	git fetch origin "${{ steps.pr_info.outputs.base }}"
	git fetch origin "${{ steps.pr_info.outputs.head }}"
	git diff "origin/${{ steps.pr_info.outputs.base }}"..."origin/${{ steps.pr_info.outputs.head }}" > diff.txt

	- name: Run Gemini Review (Chunked)
	id: gemini_review
	uses: actions/github-script@v7
	env:
	GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
	with:
	script: \|
	const fs = require("fs");
	const diff_output = fs.readFileSync("diff.txt", "utf8");

	const { GoogleGenerativeAI } = require("@google/generative-ai");
	const genAI = new GoogleGenerativeAI(process.env.GEMINI_API_KEY);
	const model = genAI.getGenerativeModel({ model: "gemini-2.5-flash" });

	if (!diff_output.trim()) {
	fs.writeFileSync("review.json", "[]");
	return;
	}

	const CHUNK_SIZE = 30000;
	let chunks = [];
	for (let i = 0; i < diff_output.length; i += CHUNK_SIZE) {
	chunks.push(diff_output.slice(i, i + CHUNK_SIZE));
	}
	console.log(`📦 청크 개수: ${chunks.length}`);

	// --- 2) Request Gemini for each chunk ---
	async function askGemini(prompt) {
	const res = await model.generateContent(prompt);
	return res.response.text();
	}

	let merged = [];

	for (let idx = 0; idx < chunks.length; idx++) {
	const chunk = chunks[idx];

	const prompt = `
	Explain in Korean.

	당신은 시니어 프론트엔드 개발자입니다.
	아래 git diff 조각(chunk ${idx+1}/${chunks.length})을 기반으로
	변경된 코드의 '변경된 줄'마다 리뷰 코멘트를 생성하세요.

	출력은 반드시 JSON 배열만:

	[
	{
	"path": "src/components/Example.tsx",
	"line": 123,
	"text": "리뷰 코멘트",
	"side": "RIGHT"
	}
	]

	규칙:
	- src 내부의 .ts / .tsx 파일만 리뷰
	- 성능 문제 판단
	- 타입스크립트 문법/타입 개선 지적
	- 변수명/함수명/주석 품질 평가
	- 중복 코드/리팩토링 포인트 제안
	- 각 코멘트는 1~2줄만 작성

	매우 중요:
	- "@@ -a,b +c,d @@" 를 사용해 정확한 새 라인 번호 계산
	- JSON 코드블록 금지 (```json 포함 금지)
	- JSON 외 다른 텍스트를 절대 출력하지 말 것

	<git diff>
	${chunk}
	</git diff>
	`;

	console.log(`🤖 Gemini 요청: chunk ${idx+1}/${chunks.length}`);
	let raw = await askGemini(prompt);

	// 코드블록 제거
	raw = raw.replace(/```json/g, "").replace(/```/g, "").trim();

	try {
	const parsed = JSON.parse(raw);
	merged.push(...parsed);
	} catch (e) {
	console.log("❌ JSON 파싱 실패. 출력:");
	console.log(raw);
	throw e;
	}
	}

	fs.writeFileSync("review.json", JSON.stringify(merged, null, 2));
	console.log("🎉 모든 청크 JSON 병합 완료");

	- name: Convert JSON to diff positions
	id: convert
	uses: actions/github-script@v7
	with:
	script: \|
	const fs = require("fs");

	let raw = fs.readFileSync("review.json", "utf8")
	.replace(/```json/g, "")
	.replace(/```/g, "")
	.trim();

	let review = JSON.parse(raw);
	const diff = fs.readFileSync("diff.txt", "utf8");

	const output = [];
	const fileBlocks = diff.split("diff --git").slice(1);

	for (const block of fileBlocks) {
	const pathMatch = block.match(/b\/(.+)\nindex/);
	if (!pathMatch) continue;

	const path = pathMatch[1];
	const fileComments = review.filter(c => c.path === path);
	if (fileComments.length === 0) continue;

	const lines = block.split("\n");
	let position = 0;
	let newLine = 0;
	let oldLine = 0;

	for (const line of lines) {
	position++;

	if (line.startsWith("@@")) {
	const m = line.match(/@@ -(\d+),?\d* \+(\d+),?\d* @@/);
	if (m) {
	oldLine = parseInt(m[1]);
	newLine = parseInt(m[2]);
	}
	continue;
	}

	if (line.startsWith("+")) {
	newLine++;
	const match = fileComments.find(c => c.line === newLine);
	if (match) {
	output.push({
	path,
	position,
	body: match.text
	});
	}
	continue;
	}

	if (line.startsWith("-")) {
	oldLine++;
	continue;
	}

	oldLine++; newLine++;
	}
	}

	core.setOutput("comments", JSON.stringify(output));

	- name: Submit Code Review
	uses: actions/github-script@v7
	with:
	script: \|
	const comments = JSON.parse(`${{ steps.convert.outputs.comments }}`);

	if (!comments.length) {
	console.log("코멘트 없음 — 리뷰 생략");
	return;
	}

	await github.rest.pulls.createReview({
	owner: context.repo.owner,
	repo: context.repo.repo,
	pull_number: ${{ steps.pr_info.outputs.number }},
	event: "COMMENT",
	comments
	});

	console.log("라인별 코드 리뷰 제출 완료!");

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refactor: 라인별 코드리뷰로 변경 #47

Workflow file

refactor: 라인별 코드리뷰로 변경 #47

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Workflow file for this run