wehub-resource-sync
118 lines
4.0 KiB
YAML
118 lines
4.0 KiB
YAML
name: 'Gather PR Diff'
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description: 'Fetch PR diff, changed file list, and statistics via GitHub API'
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inputs:
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pr_number:
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description: 'PR number (required for workflow_dispatch triggers)'
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required: false
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default: ''
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outputs:
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skip:
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description: 'Whether to skip processing (empty diff)'
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value: '${{ steps.gather.outputs.skip }}'
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pr_number:
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description: 'Resolved PR number'
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value: '${{ steps.gather.outputs.pr_number }}'
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additions:
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description: 'Total lines added'
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value: '${{ steps.gather.outputs.additions }}'
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deletions:
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description: 'Total lines deleted'
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value: '${{ steps.gather.outputs.deletions }}'
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total_lines:
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description: 'Total lines changed (additions + deletions)'
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value: '${{ steps.gather.outputs.total_lines }}'
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file_count:
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description: 'Number of changed files'
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value: '${{ steps.gather.outputs.file_count }}'
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diff_truncated:
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description: 'Whether the diff was truncated'
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value: '${{ steps.gather.outputs.diff_truncated }}'
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runs:
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using: 'composite'
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steps:
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- id: 'gather'
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uses: 'actions/github-script@v7'
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env:
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INPUT_PR_NUMBER: '${{ inputs.pr_number }}'
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with:
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script: |
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const fs = require('fs');
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const tmpDir = process.env.RUNNER_TEMP || '/tmp';
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// Support both PR event trigger and manual workflow_dispatch
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const prNumber = context.payload.pull_request?.number
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|| Number(process.env.INPUT_PR_NUMBER)
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|| null;
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if (!prNumber) {
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core.setFailed('No PR number found. Provide pr_number input for manual trigger.');
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return;
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}
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core.setOutput('pr_number', String(prNumber));
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// Fetch diff (returns raw text when using diff media type)
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const { data: diff } = await github.rest.pulls.get({
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owner: context.repo.owner,
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repo: context.repo.repo,
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pull_number: prNumber,
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mediaType: { format: 'diff' },
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});
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if (!diff || String(diff).trim().length === 0) {
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core.warning('PR has an empty diff, skipping');
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core.setOutput('skip', 'true');
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return;
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}
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// Fetch all changed files (paginated)
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const allFiles = [];
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let page = 1;
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while (true) {
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const { data: files } = await github.rest.pulls.listFiles({
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owner: context.repo.owner,
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repo: context.repo.repo,
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pull_number: prNumber,
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per_page: 100,
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page,
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});
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allFiles.push(...files);
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if (files.length < 100) break;
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page++;
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}
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const additions = allFiles.reduce((s, f) => s + f.additions, 0);
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const deletions = allFiles.reduce((s, f) => s + f.deletions, 0);
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const totalLines = additions + deletions;
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// Truncate diff to 100K characters
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const MAX_DIFF = 100000;
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const diffStr = String(diff);
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const diffTruncated = diffStr.length > MAX_DIFF;
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const truncatedDiff = diffTruncated
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? diffStr.substring(0, MAX_DIFF) + '\n\n... [diff truncated at 100K chars]'
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: diffStr;
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// Build compact file list
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const fileList = allFiles.map(f => ({
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filename: f.filename,
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status: f.status,
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additions: f.additions,
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deletions: f.deletions,
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}));
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// Write large data to temp files (avoid output size limits)
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fs.writeFileSync(`${tmpDir}/pr_diff.txt`, truncatedDiff);
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fs.writeFileSync(`${tmpDir}/file_list.json`, JSON.stringify(fileList));
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// Only small values as step outputs
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core.setOutput('skip', 'false');
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core.setOutput('additions', String(additions));
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core.setOutput('deletions', String(deletions));
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core.setOutput('total_lines', String(totalLines));
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core.setOutput('file_count', String(allFiles.length));
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core.setOutput('diff_truncated', String(diffTruncated));
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