name: Build automatic release

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

jobs:
    check:
        runs-on: ubuntu-24.04
        outputs:
            should_build: ${{ steps.check-updates.outputs.has_changes }}
        steps:
            -   name: Check for updates 🌏
                id: check-updates
                run: |
                    last_run=$(curl -s "https://api.github.com/repos/${{ github.repository }}/releases/latest" | jq -r '.created_at')
                    kotatsu_updated=$(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-24.04
        outputs:
            new_tag: ${{ steps.tagger.outputs.new_tag }}
        steps:
            -   uses: actions/checkout@v3
                with:
                    ref: autobuild

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

            -   name: Setup Android SDK 💻
                uses: android-actions/setup-android@v3

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

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

            -   name: Decode Keystore
                id: decode_keystore
                uses: timheuer/base64-to-file@v1
                with:
                    fileName: 'keystore/kotatsu.jks'
                    encodedString: ${{ secrets.ANDROID_SIGNING_KEY }}

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

            -   name: Prepare to Upload 🌏
                run: |
                    mv ${{steps.sign_app.outputs.signedFile}} app/build/outputs/apk/release/release.apk
                    echo "SIGNED_APK=app/build/outputs/apk/release/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 new GH Release + Uploading 🌏
                uses: softprops/action-gh-release@v2
                with:
                    tag_name: v${{ steps.tagger.outputs.new_tag }}
                    name: "Build ${{ steps.tagger.outputs.new_tag }}"
                    body: |
                        Automated 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-24.04
        permissions:
            contents: write
        steps:
            -   uses: actions/checkout@v3
                with:
                    ref: autobuild
                    fetch-depth: 0

            -   name: Commit 🌏
                run: |
                    git config --local user.email "autorelease@users.noreply.github.com"
                    git config --local user.name "autorelease"
                    if [[ -n $(git status -s) ]]; then
                      git add README.md
                      git commit -m "Automatic release v${{ needs.build.outputs.new_tag }}"
                      git push origin autobuild
                    else
                      echo "No changes to push!"
                    fi