label.yml

name: Add/Remove Labels

on:
  pull_request_target:
    types: [ opened, closed ]

jobs:
  merge_job:
    if: github.event.pull_request.merged == true
    permissions:
      contents: read
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - uses: actions/github-script@v6
      with:
        script: |
          let removeLabelsList = [
            "Pending Merge", 
            "Needs Author Reply", 
            "Needs Review", 
            "Review High Priority", 
            "Needs Second Approval",
            "Blocked by dependency", 
            "Needs a new dev", 
            "squash-merge", 
            "Keep Open", 
            "Stable"
          ];

          async function removeLabel(label) {
            await github.rest.issues.removeLabel({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              name: label
            });
          }

          async function addPostMergeComments() {
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: `Maintainers: Please [Sync Translations](https://github.com/ankidroid/Anki-Android/actions/workflows/sync_translations.yml) to produce a commit with only the automated changes from this PR.
              
          Read more about updating strings on the wiki,
          - [localization-administration](https://github.com/ankidroid/Anki-Android/wiki/Development-Guide#localization-administration)
          - [download-localized-strings](https://github.com/ankidroid/Anki-Android/wiki/Development-Guide#download-localized-strings)`
            })
          }

          let result = await github.rest.issues.listLabelsOnIssue({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: context.issue.number,
          });

          if (result.data !== null && result.data.length > 0) {
            let labels = result.data;
            for (let label of labels) {
                if (removeLabelsList.includes(label.name)) {
                  console.log("Removed: ", label.name);
                  removeLabel(label.name);
                }

                // add post merge comments for 'strings' labeled PR
                if (label.name == "strings") {
                  addPostMergeComments();
                }
            }
          }

  add_label:
    if: (!(github.event.action == 'closed' && github.event.pull_request.merged != true)) && github.event.pull_request.merged != true && github.event.pull_request.head.ref != 'i18n_sync'
    permissions:
      contents: read
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - uses: actions/github-script@v6
        with:
          script: |
            const I18N_FILES = [
                "01-core",
                "02-strings",
                "03-dialogs",
                "04-network",
                "05-feedback",
                "06-statistics",
                "07-cardbrowser",
                "08-widget",
                "09-backup",
                "10-preferences",
                "11-arrays",
                "16-multimedia-editor",
                "17-model-manager",
                "18-standard-models",
                "marketdescription",
                "ankidroid-titles",
            ];

            let stringsLabel = "strings";

            async function addLabel(labels) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels: labels
              });
            }

            async function addComments() {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: `Message to maintainers, this PR contains strings changes. 
            1. Before merging this PR, it is best to run the "Sync Translations" GitHub action, then make and merge a PR from the i18n_sync branch to get translations cleaned out.
            2. Then merge this PR, and immediately do another translation PR so the huge change made by this PR's key changes are all by themselves.
                
            Read more about updating strings on the wiki,
            - [localization-administration](https://github.com/ankidroid/Anki-Android/wiki/Development-Guide#localization-administration)
            - [download-localized-strings](https://github.com/ankidroid/Anki-Android/wiki/Development-Guide#download-localized-strings)`
              })
            }

            const changedFiles = await github.rest.pulls.listFiles({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
            });

            // loop through list of files in current pr, then check if filename contains in i18n file name,
            // set boolean to true and use the boolean in outer loop to add label
            let fileChanged = false;
            for (let files of changedFiles.data) {
              for (let i18n of I18N_FILES) {
                if (files.filename.includes(i18n)) {
                  fileChanged = true;
                  break;
                }
              }

              if (fileChanged) {
                addLabel([stringsLabel]);
                addComments();
                break;
              }
            }