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| 1 | +name: '⛙ combine-prs' |
| 2 | + |
| 3 | +on: |
| 4 | + workflow_dispatch: |
| 5 | + inputs: |
| 6 | + branchExpression: |
| 7 | + description: 'Regular expression to match against PR branches to find combinable PRs' |
| 8 | + required: true |
| 9 | + default: 'dependabot' |
| 10 | + mustBeGreen: |
| 11 | + description: 'Only combine PRs that are green (status is success)' |
| 12 | + required: true |
| 13 | + default: true |
| 14 | + combineTitle: |
| 15 | + description: 'Title of the combined PR' |
| 16 | + required: true |
| 17 | + default: '⬆️ Bump dependencies' |
| 18 | + combineBranchName: |
| 19 | + description: 'Name of the branch to combine PRs into' |
| 20 | + required: true |
| 21 | + default: 'combine-prs' |
| 22 | + ignoreLabel: |
| 23 | + description: 'Exclude PRs with this label' |
| 24 | + required: true |
| 25 | + default: 'nocombine' |
| 26 | + |
| 27 | +jobs: |
| 28 | + combine-prs: |
| 29 | + name: ${{ github.event.inputs.combineBranchName }} |
| 30 | + runs-on: ubuntu-latest |
| 31 | + steps: |
| 32 | + - uses: actions/github-script@v6 |
| 33 | + with: |
| 34 | + github-token: ${{secrets.GITHUB_TOKEN}} |
| 35 | + script: | |
| 36 | + const pulls = await github.paginate('GET /repos/:owner/:repo/pulls', { |
| 37 | + owner: context.repo.owner, |
| 38 | + repo: context.repo.repo |
| 39 | + }); |
| 40 | + const branchRegExp = new RegExp(`${{github.event.inputs.branchExpression}}`); |
| 41 | + let branchesAndPRStrings = []; |
| 42 | + let baseBranch = null; |
| 43 | + let baseBranchSHA = null; |
| 44 | + for (const pull of pulls) { |
| 45 | + const branch = pull['head']['ref']; |
| 46 | + console.log('Pull for branch: ' + branch); |
| 47 | + if (branchRegExp.test(branch)) { |
| 48 | + console.log('Branch matched prefix: ' + branch); |
| 49 | + let statusOK = true; |
| 50 | + if(${{ github.event.inputs.mustBeGreen }}) { |
| 51 | + console.log('Checking green status: ' + branch); |
| 52 | + const stateQuery = `query($owner: String!, $repo: String!, $pull_number: Int!) { |
| 53 | + repository(owner: $owner, name: $repo) { |
| 54 | + pullRequest(number:$pull_number) { |
| 55 | + commits(last: 1) { |
| 56 | + nodes { |
| 57 | + commit { |
| 58 | + statusCheckRollup { |
| 59 | + state |
| 60 | + } |
| 61 | + } |
| 62 | + } |
| 63 | + } |
| 64 | + } |
| 65 | + } |
| 66 | + }` |
| 67 | + const vars = { |
| 68 | + owner: context.repo.owner, |
| 69 | + repo: context.repo.repo, |
| 70 | + pull_number: pull['number'] |
| 71 | + }; |
| 72 | + const result = await github.graphql(stateQuery, vars); |
| 73 | + const [{ commit }] = result.repository.pullRequest.commits.nodes; |
| 74 | + const state = commit.statusCheckRollup.state |
| 75 | + console.log('Validating status: ' + state); |
| 76 | + if(state != 'SUCCESS') { |
| 77 | + console.log('Discarding ' + branch + ' with status ' + state); |
| 78 | + statusOK = false; |
| 79 | + } |
| 80 | + } |
| 81 | + console.log('Checking labels: ' + branch); |
| 82 | + const labels = pull['labels']; |
| 83 | + for(const label of labels) { |
| 84 | + const labelName = label['name']; |
| 85 | + console.log('Checking label: ' + labelName); |
| 86 | + if(labelName == '${{ github.event.inputs.ignoreLabel }}') { |
| 87 | + console.log('Discarding ' + branch + ' with label ' + labelName); |
| 88 | + statusOK = false; |
| 89 | + } |
| 90 | + } |
| 91 | + if (statusOK) { |
| 92 | + console.log('Adding branch to array: ' + branch); |
| 93 | + const prString = '#' + pull['number'] + ' ' + pull['title']; |
| 94 | + branchesAndPRStrings.push({ branch, prString }); |
| 95 | + baseBranch = pull['base']['ref']; |
| 96 | + baseBranchSHA = pull['base']['sha']; |
| 97 | + } |
| 98 | + } |
| 99 | + } |
| 100 | + if (branchesAndPRStrings.length == 0) { |
| 101 | + core.setFailed('No PRs/branches matched criteria'); |
| 102 | + return; |
| 103 | + } |
| 104 | + if (branchesAndPRStrings.length == 1) { |
| 105 | + core.setFailed('Only one PR/branch matched criteria'); |
| 106 | + return; |
| 107 | + } |
| 108 | +
|
| 109 | + try { |
| 110 | + await github.rest.git.createRef({ |
| 111 | + owner: context.repo.owner, |
| 112 | + repo: context.repo.repo, |
| 113 | + ref: 'refs/heads/' + '${{ github.event.inputs.combineBranchName }}', |
| 114 | + sha: baseBranchSHA |
| 115 | + }); |
| 116 | + } catch (error) { |
| 117 | + console.log(error); |
| 118 | + core.setFailed('Failed to create combined branch - maybe a branch by that name already exists?'); |
| 119 | + return; |
| 120 | + } |
| 121 | + |
| 122 | + let combinedPRs = []; |
| 123 | + let mergeFailedPRs = []; |
| 124 | + for(const { branch, prString } of branchesAndPRStrings) { |
| 125 | + try { |
| 126 | + await github.rest.repos.merge({ |
| 127 | + owner: context.repo.owner, |
| 128 | + repo: context.repo.repo, |
| 129 | + base: '${{ github.event.inputs.combineBranchName }}', |
| 130 | + head: branch, |
| 131 | + }); |
| 132 | + console.log('Merged branch ' + branch); |
| 133 | + combinedPRs.push(prString); |
| 134 | + } catch (error) { |
| 135 | + console.log('Failed to merge branch ' + branch); |
| 136 | + mergeFailedPRs.push(prString); |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | + console.log('Creating combined PR'); |
| 141 | + const combinedPRsString = combinedPRs.join('\n'); |
| 142 | + let body = '⛙ Combined PRs:\n' + combinedPRsString; |
| 143 | + if(mergeFailedPRs.length > 0) { |
| 144 | + const mergeFailedPRsString = mergeFailedPRs.join('\n'); |
| 145 | + body += '\n\n⚠️ The following PRs were left out due to merge conflicts:\n' + mergeFailedPRsString |
| 146 | + } |
| 147 | + await github.rest.pulls.create({ |
| 148 | + owner: context.repo.owner, |
| 149 | + repo: context.repo.repo, |
| 150 | + title: '⛙ ${{github.event.inputs.combineTitle}}', |
| 151 | + head: '${{ github.event.inputs.combineBranchName }}', |
| 152 | + base: baseBranch, |
| 153 | + body: body |
| 154 | + }); |
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