Fixed missing unique files creation and cache logic

.github/workflows/auto-assign-reviewers.yml

@@ -8,6 +8,7 @@
 # 2025-01-21     kurisaW      Initial version
 # 2025-03-14     hydevcode
 # 2025-05-10     kurisaW      Fixed file existence, cache, and comment time issues
+# 2025-05-11     kurisaW      Fixed missing unique files creation and cache logic
 
 # Script Function Description: Assign PR reviews based on the MAINTAINERS list.
 
@@ -32,12 +33,14 @@ jobs:
         run: |
           PR_NUMBER=${{ github.event.pull_request.number }}
           echo "PR_NUMBER=${PR_NUMBER}" >> $GITHUB_OUTPUT
+
       - name: Checkout code
         uses: actions/checkout@v4
         with:
           ref: master
           sparse-checkout: MAINTAINERS
           persist-credentials: false
+
       - name: Get changed files
         id: changed_files
         run: |
@@ -48,8 +51,8 @@ jobs:
           echo "$changed_files" | grep -v '^MAINTAINERS$' > changed_files.txt
           
           existing_comment=$(curl -s \
-          "https://api.github.com/repos/${{ github.repository }}/issues/${{ steps.extract-pr.outputs.PR_NUMBER }}/comments" | \
-          jq -r '.[] | select(.user.login == "github-actions[bot]") | {body: .body} | @base64')
+            "https://api.github.com/repos/${{ github.repository }}/issues/${{ steps.extract-pr.outputs.PR_NUMBER }}/comments" | \
+            jq -r '.[] | select(.user.login == "github-actions[bot]") | {body: .body} | @base64')
 
           echo "=== Changed Files ==="
           cat changed_files.txt
@@ -57,10 +60,8 @@ jobs:
 
           comment_body=""
           if [[ ! -z "$existing_comment" ]]; then
-            comment_body=$(echo "$existing_comment" | head -1 | base64 -d | jq -r .body|sed -nE 's/.*Last Updated: ([0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2} UTC).*/\1/p')
-
+            comment_body=$(echo "$existing_comment" | head -1 | base64 -d | jq -r .body | sed -nE 's/.*Last Updated: ([0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2} UTC).*/\1/p')
             comment_time=$(date -d "$comment_body" +%s)
-
             echo "${comment_body}"
             echo "COMMENT_TIME=${comment_time}" >> $GITHUB_OUTPUT
           else
@@ -69,7 +70,6 @@ jobs:
           fi
           echo "COMMENT_TIME=${comment_time}"
 
-
       - name: Parse MAINTAINERS file
         id: parse_maintainer
         run: |
@@ -98,8 +98,8 @@ jobs:
       - name: Generate reviewers list
         id: generate_reviewers
         run: |
-          rm -f triggered_reviewers.txt triggered_tags.txt
-          touch triggered_reviewers.txt triggered_tags.txt
+          rm -f triggered_reviewers.txt triggered_tags.txt unique_reviewers.txt unique_tags.txt
+          touch triggered_reviewers.txt triggered_tags.txt unique_reviewers.txt unique_tags.txt
 
           while IFS='|' read -r tag path reviewers; do
             # 转义路径中的正则特殊字符
@@ -113,10 +113,14 @@ jobs:
             fi
           done < tag_data.csv
 
+          # 生成去重的 unique_reviewers.txt 和 unique_tags.txt
+          sort -u triggered_reviewers.txt > unique_reviewers.txt
+          sort -u triggered_tags.txt > unique_tags.txt
+
           echo "=== Matched Paths ==="
-          cat triggered_tags.txt
+          cat unique_tags.txt
           echo "=== Matched Reviewers ==="
-          cat triggered_reviewers.txt
+          cat unique_reviewers.txt
 
       - name: Restore Reviewers Cache
         id: reviewers-cache-restore 
@@ -127,11 +131,19 @@ jobs:
             unique_tags_bak.txt
             unique_reviewers_bak.txt
           key: ${{ runner.os }}-auto-assign-reviewers-${{ steps.extract-pr.outputs.PR_NUMBER }}-${{ steps.changed_files.outputs.COMMENT_TIME }}
+
       - name: Get approval status
         id: get_approval
         run: |
           current_time=$(date -u +"%Y-%m-%d %H:%M UTC")
-          reviewers=$(cat unique_reviewers.txt | tr '\n' '|')
+          
+          # 检查 unique_reviewers.txt 是否存在且非空
+          if [[ ! -s unique_reviewers.txt ]]; then
+            echo "No reviewers found, creating empty unique_reviewers.txt"
+            touch unique_reviewers.txt
+          fi
+          
+          reviewers=$(cat unique_reviewers.txt | tr '\n' '|' | sed 's/|$//')
           
           # 获取 PR 的所有评论
           comments=$(curl -s \
@@ -187,7 +199,6 @@ jobs:
             
               if [[ -n "${approvals[$reviewer]}" ]]; then
                 timestamp=$(date -d "${approvals[$reviewer]}" -u +"%Y-%m-%d %H:%M UTC")
-                
                 echo "- ✅ **$formatted_reviewers** Reviewed On $timestamp"
               else
                 echo "- ⌛ **$formatted_reviewers** Pending Review"
@@ -196,11 +207,14 @@ jobs:
           } > review_status.md
           
           echo "CURRENT_TIME=${current_time}" >> $GITHUB_OUTPUT
+
       - name: Generate review data
         id: generate_review
         run: |
           unique_tags=""
-          unique_tags=$(cat unique_tags.txt | xargs)
+          if [[ -s unique_tags.txt ]]; then
+            unique_tags=$(cat unique_tags.txt | xargs)
+          fi
           unique_tags_bak=""
           if [[ -f unique_tags_bak.txt ]]; then
             unique_tags_bak=$(cat unique_tags_bak.txt | xargs)
@@ -217,7 +231,6 @@ jobs:
 
           current_time=$(date -u +"%Y-%m-%d %H:%M UTC")
           {
-
             # 生成审查分配信息
             echo "## 📌 Code Review Assignment"
             echo ""
@@ -264,6 +277,7 @@ jobs:
             echo "> ℹ️ **刷新CI状态操作需要具备仓库写入权限。**"
             echo "> ℹ️ **Refresh CI status operation requires repository Write permission.**"
           } > review_data.md
+
       - name: Post/Update comment
         id: post_comment
         run: |
@@ -289,22 +303,24 @@ jobs:
               -d "$(jq -n --arg body "$(cat review_data.md)" '{body: $body}')" \
               "https://api.github.com/repos/${{ github.repository }}/issues/${{ steps.extract-pr.outputs.PR_NUMBER }}/comments")
           fi
+
       - name: Get Comment Time
         id: get_comment_time
         run: |
           existing_comment=$(curl -s \
-          "https://api.github.com/repos/${{ github.repository }}/issues/${{ steps.extract-pr.outputs.PR_NUMBER }}/comments" | \
-          jq -r '.[] | select(.user.login == "github-actions[bot]") | {body: .body} | @base64')
+            "https://api.github.com/repos/${{ github.repository }}/issues/${{ steps.extract-pr.outputs.PR_NUMBER }}/comments" | \
+            jq -r '.[] | select(.user.login == "github-actions[bot]") | {body: .body} | @base64')
           comment_body="${{ steps.get_approval.outputs.CURRENT_TIME }}"
           comment_time=$(date -d "$comment_body" +%s)
           echo "CURRENT_TIME=${comment_time}" >> $GITHUB_OUTPUT
           cp unique_reviewers.txt unique_reviewers_bak.txt
           cp unique_tags.txt unique_tags_bak.txt
-      - name: Restore Reviewers Save
+
+      - name: Save Reviewers Cache
         id: reviewers-cache-save
         uses: actions/cache/save@v4
         with:
           path: |
             unique_tags_bak.txt
             unique_reviewers_bak.txt
-          key: ${{ runner.os }}-auto-assign-reviewers-${{ steps.extract-pr.outputs.PR_NUMBER }}-${{ steps.get_comment_time.outputs.CURRENT_TIME }}
+          key: ${{ runner.os }}-auto-assign-reviewers-${{ steps.extract-pr.outputs.PR_NUMBER }}-${{ steps.get_comment_time.outputs.CURRENT_TIME }}