预览变更

$
# 不使用 --id（每次都是唯一 UUID）
$
[docs]: Published docs to https://fern-preview-c973a36e-337b-44f5-ab83-aab.docs.buildwithfern.com/learn
$
$
# 使用 --id my-feature（稳定 URL）
$
[docs]: Published docs to https://fern-preview-my-feature.docs.buildwithfern.com/learn

1
name: Preview Docs
2
3
on:
4
  pull_request:
5
    types: [opened, synchronize, ready_for_review]
6
    branches:
7
      - main
8
9
jobs:
10
  run:
11
    runs-on: ubuntu-latest
12
    permissions:
13
      pull-requests: write
14
      contents: read
15
    steps:
16
      - name: Checkout repository
17
        uses: actions/checkout@v4
18
        with:
19
          fetch-depth: 0
20
21
      - name: Setup Fern CLI
22
        uses: fern-api/setup-fern-cli@v1
23
24
      - name: Generate preview URL
25
        id: generate-docs
26
        env:
27
          FERN_TOKEN: ${{ secrets.FERN_TOKEN }}
28
          HEAD_REF: ${{ github.head_ref }}
29
        run: |
30
          OUTPUT=$(fern generate --docs --preview --id "$HEAD_REF" 2>&1) || true
31
          echo "$OUTPUT"
32
          URL=$(echo "$OUTPUT" | grep -oP 'Published docs to \K.*(?= \()')
33
          echo "preview_url=$URL" >> $GITHUB_OUTPUT
34
          echo "Preview URL: $URL"
35
36
      - name: Get page links for changed MDX files
37
        id: page-links
38
        env:
39
          FERN_TOKEN: ${{ secrets.FERN_TOKEN }}
40
        run: |
41
          PREVIEW_URL="${{ steps.generate-docs.outputs.preview_url }}"
42
          CHANGED_FILES=$(git diff --name-only origin/main...HEAD -- '*.mdx' 2>/dev/null || echo "")
43
44
          if [ -z "$CHANGED_FILES" ] || [ -z "$PREVIEW_URL" ]; then
45
            echo "page_links=" >> $GITHUB_OUTPUT; exit 0
46
          fi
47
48
          BASE_URL=$(echo "$PREVIEW_URL" | grep -oP 'https?://[^/]+')
49
50
          FILES_PARAM=$(echo "$CHANGED_FILES" | tr '\n' ',' | sed 's/,$//')
51
          RESPONSE=$(curl -sf -H "FERN_TOKEN: $FERN_TOKEN" "${PREVIEW_URL}/api/fern-docs/get-slug-for-file?files=${FILES_PARAM}" 2>/dev/null) || {
52
            echo "page_links=" >> $GITHUB_OUTPUT; exit 0
53
          }
54
55
          PAGE_LINKS=$(echo "$RESPONSE" | jq -r --arg url "$BASE_URL" \
56
            '.mappings[] | select(.slug != null) | "- [\(.slug)](\($url)/\(.slug))"')
57
58
          if [ -n "$PAGE_LINKS" ]; then
59
            { echo "page_links<<EOF"; echo "$PAGE_LINKS"; echo "EOF"; } >> $GITHUB_OUTPUT
60
          else
61
            echo "page_links=" >> $GITHUB_OUTPUT
62
          fi
63
64
      - name: Create comment content
65
        run: |
66
          echo ":herb: **预览你的文档：** <${{ steps.generate-docs.outputs.preview_url }}>" > comment.md
67
68
          if [ -n "${{ steps.page-links.outputs.page_links }}" ]; then
69
            echo "" >> comment.md
70
            echo "以下是你更新的 markdown 页面：" >> comment.md
71
            echo "${{ steps.page-links.outputs.page_links }}" >> comment.md
72
          fi
73
74
      - name: Post PR comment
75
        uses: thollander/actions-comment-pull-request@v2.4.3
76
        with:
77
          filePath: comment.md
78
          comment_tag: preview-docs
79
          mode: upsert

1
name: Clean up preview links
2
3
on:
4
  pull_request:
5
    types: [closed]
6
7
jobs:
8
  cleanup:
9
    if: github.event.pull_request.merged == true
10
    runs-on: ubuntu-latest
11
    steps:
12
      - name: Checkout repository
13
        uses: actions/checkout@v4
14
15
      - name: Setup Fern CLI
16
        uses: fern-api/setup-fern-cli@v1
17
18
      - name: Delete preview deployment
19
        env:
20
          FERN_TOKEN: ${{ secrets.FERN_TOKEN }}
21
        run: |
22
          echo "正在删除分支预览：${{ github.head_ref }}"
23
          fern docs preview delete --id "${{ github.head_ref }}" || echo "预览删除返回非零值 — 可能已经删除"