build.yml

name: Checkout & Build App

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

jobs:
  check:
    runs-on: ubuntu-22.04
    outputs:
      should_build: ${{ steps.check-updates.outputs.has_changes }}
    steps:
      - id: check-updates
        run: |
          last_run=$(curl -s "https://api.github.com/repos/${{ github.repository }}/actions/workflows/build.yml/runs?status=completed&per_page=1" | jq -r '.workflow_runs[0].created_at')
          kotatsu_updated=$(curl -s "https://api.github.com/repos/KotatsuApp/Kotatsu/commits?since=$last_run" | jq '. | length')
          parsers_updated=$(curl -s "https://api.github.com/repos/KotatsuApp/kotatsu-parsers/commits?since=$last_run" | jq '. | length')
          if [ "$kotatsu_updated" -gt "0" ] || [ "$parsers_updated" -gt "0" ]; then
            echo "has_changes=true" >> $GITHUB_OUTPUT
          else
            echo "has_changes=false" >> $GITHUB_OUTPUT
          fi

  build:
    needs: check
    if: needs.check.outputs.should_build == 'true'
    runs-on: ubuntu-22.04
    outputs:
      new_tag: ${{ steps.tagger.outputs.new_tag }}
    steps:
      - uses: actions/checkout@v3
        with:
          ref: base

      - uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '17'
          cache: 'gradle'

      - name: Setup Android SDK
        uses: android-actions/setup-android@v3
        with:
          android_sdk_version: '35.0.0'
          android_build_tools_version: '35.0.0'

      - name: Pull upstream
        run: |
          git remote add upstream https://github.com/KotatsuApp/Kotatsu-Nightly.git
          git fetch upstream base
          git reset --hard upstream/base

      - name: Grant permissions
        run: chmod a+x gradlew

      - name: Generate build number
        id: tagger
        run: |
          echo "new_tag=$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
          echo "formatted_date=$(date +'%Y/%m/%d')" >> $GITHUB_OUTPUT

      - name: "Build Nightly APK"
        run: >-
          ./gradlew assembleNightly
          -DparsersVersionOverride=$(curl -s https://api.github.com/repos/kotatsuapp/kotatsu-parsers/commits/master -H "Accept: application/vnd.github.sha" | cut -c -10)

      - name: Sign Nightly APK
        uses: ilharp/sign-android-release@v1
        id: sign_app
        with:
          releaseDir: app/build/outputs/apk/nightly
          signingKey: ${{ secrets.ANDROID_SIGNING_KEY }}
          keyAlias: ${{ secrets.ANDROID_KEY_ALIAS }}
          keyStorePassword: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
          keyPassword: ${{ secrets.ANDROID_KEY_PASSWORD }}
          buildToolsVersion: 35.0.0

      - name: Prepare to Upload
        run: |
          mv ${{steps.sign_app.outputs.signedFile}} app/build/outputs/apk/nightly/release.apk
          echo "SIGNED_APK=app/build/outputs/apk/nightly/release.apk" >> $GITHUB_ENV

      - name: Get latest changes
        id: changelog
        run: |
          CHANGELOG=$(cat CHANGELOG.txt)
          echo "content<<EOF" >> $GITHUB_OUTPUT
          echo "$CHANGELOG" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Create Release and Upload
        uses: softprops/action-gh-release@v2
        with:
          tag_name: nightly-${{ steps.tagger.outputs.new_tag }}
          name: "Nightly Build ${{ steps.tagger.outputs.new_tag }}"
          body: |
            Automated nightly build generated on ${{ steps.tagger.outputs.formatted_date }}

            ${{ steps.changelog.outputs.content }}
          files: ${{ env.SIGNED_APK }}
          prerelease: false

  update:
    needs: build
    if: needs.check.outputs.should_build == 'true'
    runs-on: ubuntu-22.04
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v3
        with:
          ref: nightly
          fetch-depth: 0

      - name: Get Build Number
        run: |
          VERSION_NUMBER="${{ needs.build.outputs.new_tag }}"
          COUNTER_LINKS=""
          for (( i=0; i<${#VERSION_NUMBER}; i++ )); do
            DIGIT="${VERSION_NUMBER:$i:1}"
            COUNTER_LINKS+="[![Download](https://rule34.xxx/counter/$DIGIT.gif)](https://github.com/KotatsuApp/kotatsu-nightly/releases/latest) "
          done
          
          sed -i "/### \[Latest Build Number of Kotatsu Nightly\]/,/^$/c\### [Latest Build Number of Kotatsu Nightly](https://github.com/KotatsuApp/kotatsu-nightly/releases/latest)\n${COUNTER_LINKS}\n" README.md

      - name: Update Docs
        run: |
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          if [[ -n $(git status -s) ]]; then
            git add README.md
            git commit -m "Bump build number to ${{ needs.build.outputs.new_tag }}"
            git push origin nightly
          else
            echo "No changes to push!"
          fi