feat: 현재 있는 브랜치의 가장 최신 커밋과 main의 최신커밋을 비교하여 변경점을 요약하는 함수 추가

packages/analysis-engine/src/index.ts

@@ -7,7 +7,7 @@ import { buildCSMDict } from "./csm";
 import getCommitRaws from "./parser";
 import { PluginOctokit } from "./pluginOctokit";
 import { buildStemDict } from "./stem";
-import { getCurrentUserCommitSummary, getLatestCommitSummary } from "./summary";
+import { getCurrentUserCommitSummary, getDiffSummary, getLatestCommitSummary } from "./summary";
 
 type AnalysisEngineArgs = {
   isDebugMode?: boolean;
@@ -81,6 +81,9 @@ export class AnalysisEngine {
     const currentUserCommitSummary = await getCurrentUserCommitSummary(stemDict, this.baseBranchName, this.octokit);
     if (this.isDebugMode) console.log("currentUserCommitSummary: ", currentUserCommitSummary);
 
+    const diffSummary = await getDiffSummary(stemDict, this.baseBranchName);
+    if (this.isDebugMode) console.log("diffSummary: ", diffSummary);
+
     return {
       isPRSuccess,
       csmDict,

packages/analysis-engine/src/summary.ts

@@ -59,6 +59,30 @@ export async function getCurrentUserCommitSummary(stemDict: StemDict, baseBranch
   return await getSummary(currentUserNodes ? currentUserNodes?.slice(-10) : []);
 }
 
+export async function getDiffSummary(stemDict: StemDict, baseBranchName: string) {
+  const mainNodes = stemDict.get("main")?.nodes;
+  const currentNodes = stemDict.get(baseBranchName)?.nodes;
+
+  if (!mainNodes || !currentNodes) {
+    return "";
+  }
+
+  const mainCommit = mainNodes.slice(-1)[0].commit;
+  const currentCommit = currentNodes.slice(-1)[0].commit;
+
+  const mainCommitMessage = mainCommit.message.split("\n")[0];
+  const currentCommitMessage = currentCommit.message.split("\n")[0];
+
+  if (mainCommitMessage === currentCommitMessage) {
+    return "No changes";
+  }
+
+  const mainCommitSummary = await getSummary([mainCommit]);
+  const currentCommitSummary = await getSummary([currentCommit]);
+
+  return `main: ${mainCommitSummary}\n${baseBranchName}: ${currentCommitSummary}`;
+}
+
 const prompt = `Proceed with the task of summarising the contents of the commit message provided.
 
 Procedure: