Changed: Move to semantic versioning for app version and add commit h…

…ash and `github` to APK file names

The `versionName` will now follow semantic version `2.0.0` spec in the format `major.minor.patch(-prerelease)(+buildmetadata)`. This will make versioning the prerelease and github debug builds versions easier and follow a spec. The @termux devs should make sure that when bumping `versionName` in `build.gradle` file and when creating a tag for new releases on github that they include the patch number as well, like `v0.1.0` instead of just `v0.1`. The `build.gradle` file and `attach_debug_apks_to_release` workflow will now validate the version as well and the build/attachment will fail if `versionName` does not follow the spec. https://semver.org/spec/v2.0.0.html

APKs released on github for debug build workflows and releases are now referred as `Github` releases as per termux/termux-app@7b10a35f and termux/termux-app@94e01d68, so APK filenames have been modified to include `github` in the filename. The APKs are still debuggable, so that tag remains too.

For github workflows the apk filename format will be `termux-float_<current_version>+<last_commit_hash>-github-debug_<arch>.apk`, like `termux-float_v0.1.0+xxxxxxxx-github-debug_arm64-v8a.apk` and for github releases it will be `termux-float_<release_version>+github-debug_<arch>.apk`, like `termux-float_v0.1+github-debug_arm64-v8a.apk`. The `last_commit_hash` will be the first `8` characters of the commit hash. The `<last_commit_hash>-github-debug` will act as `buildmetadata` and will not affect versioning precedence.

For github workflows triggered by `push` and `pull_request` triggers, `<current_version>+<last_commit_hash>` will be used as new `versionName`, like `v0.1.0+xxxxxxxx`. This will make tracking which build a user is using easier and help in resolving issues as well.

The `app/build.gradle` now also supports following `TERMUX_FLOAT_` scoped environmental variables and `RELEASE_TAG` variable will not be used anymore since it may conflict with possibly other variables used by users.

- `TERMUX_FLOAT_APP_VERSION_NAME` will be used as `versionName` if its set.
- `TERMUX_FLOAT_APK_VERSION_TAG` will be used as `termux-float_<TERMUX_FLOAT_APK_VERSION_TAG>.apk` if its set.

.github/workflows/attach_debug_apk_to_release.yml

@@ -0,0 +1,64 @@
+name: Attach Debug APK To Release
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  attach-apks:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ env.GITHUB_REF }}
+
+      - name: Build and attach APK to release
+        shell: bash {0}
+        run: |
+          exit_on_error() {
+              echo "$1"
+              echo "Deleting '$RELEASE_VERSION_NAME' release and '$GITHUB_REF' tag"
+              hub release delete "$RELEASE_VERSION_NAME"
+              git push --delete origin "$GITHUB_REF"
+              exit 1
+          }
+
+          echo "Setting vars"
+          RELEASE_VERSION_NAME="${GITHUB_REF/refs\/tags\//}"
+          if ! printf "%s" "${RELEASE_VERSION_NAME/v/}" | grep -qP '^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$'; then
+            exit_on_error "The versionName '${RELEASE_VERSION_NAME/v/}' is not a valid version as per semantic version '2.0.0' spec in the format 'major.minor.patch(-prerelease)(+buildmetadata)'. https://semver.org/spec/v2.0.0.html."
+          fi
+
+          APK_DIR_PATH="./app/build/outputs/apk/debug"
+          APK_VERSION_TAG="$RELEASE_VERSION_NAME+github-debug"
+          APK_BASENAME_PREFIX="termux-float_$APK_VERSION_TAG"
+
+          echo "Building APK for '$RELEASE_VERSION_NAME' release"
+          export TERMUX_FLOAT_APK_VERSION_TAG="$APK_VERSION_TAG" # Used by app/build.gradle
+          if ! ./gradlew assembleDebug; then
+            exit_on_error "Build failed for '$RELEASE_VERSION_NAME' release."
+          fi
+
+          echo "Validating APK"
+          if ! test -f "$APK_DIR_PATH/${APK_BASENAME_PREFIX}.apk"; then
+            files_found="$(ls "$APK_DIR_PATH")"
+            exit_on_error "Failed to find built APK at '$APK_DIR_PATH/${APK_BASENAME_PREFIX}.apk'. Files found: "$'\n'"$files_found"
+          fi
+
+          echo "Generating sha25sums file"
+          if ! (cd "$APK_DIR_PATH"; sha256sum "${APK_BASENAME_PREFIX}.apk" > sha256sums); then
+            exit_on_error "Generate sha25sums failed for '$RELEASE_VERSION_NAME' release."
+          fi
+
+          echo "Attaching APK to github release"
+          if ! hub release edit \
+          -m "" \
+          -a "$APK_DIR_PATH/${APK_BASENAME_PREFIX}.apk" \
+          -a "$APK_DIR_PATH/sha256sums" \
+          "$RELEASE_VERSION_NAME"; then
+            exit_on_error "Attach APK to release failed for '$RELEASE_VERSION_NAME' release."
+          fi

.github/workflows/debug_build.yml

@@ -1,20 +1,66 @@
 name: Build
 
-on: push
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - name: Clone repository
-      uses: actions/checkout@v2
-    - name: Build
-      run: |
-        ./gradlew assembleDebug
-    - name: Store generated APK file
-      uses: actions/upload-artifact@v2
-      with:
-        name: termux-float
-        path: |
-          ./app/build/outputs/apk/debug/termux-float-debug.apk
-          ./app/build/outputs/apk/debug/output-metadata.json
+      - name: Clone repository
+        uses: actions/checkout@v2
+
+      - name: Build APK
+        shell: bash {0}
+        run: |
+          exit_on_error() { echo "$1"; exit 1; }
+
+          echo "Setting vars"
+          # Set RELEASE_VERSION_NAME to "<CURRENT_VERSION_NAME>+<last_commit_hash>"
+          CURRENT_VERSION_NAME_REGEX='\s+versionName "([^"]+)"$'
+          CURRENT_VERSION_NAME="$(grep -m 1 -E "$CURRENT_VERSION_NAME_REGEX" ./app/build.gradle | sed -r "s/$CURRENT_VERSION_NAME_REGEX/\1/")"
+          RELEASE_VERSION_NAME="v$CURRENT_VERSION_NAME+${GITHUB_SHA:0:7}" # The "+" is necessary so that versioning precedence is not affected
+          if ! printf "%s" "${RELEASE_VERSION_NAME/v/}" | grep -qP '^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$'; then
+            exit_on_error "The versionName '${RELEASE_VERSION_NAME/v/}' is not a valid version as per semantic version '2.0.0' spec in the format 'major.minor.patch(-prerelease)(+buildmetadata)'. https://semver.org/spec/v2.0.0.html."
+          fi
+
+          APK_DIR_PATH="./app/build/outputs/apk/debug"
+          APK_VERSION_TAG="$RELEASE_VERSION_NAME-github-debug" # Note the "-", GITHUB_SHA will already have "+" before it
+          APK_BASENAME_PREFIX="termux-float_$APK_VERSION_TAG"
+
+          # Used by attachment steps later
+          echo "APK_DIR_PATH=$APK_DIR_PATH" >> $GITHUB_ENV
+          echo "APK_VERSION_TAG=$APK_VERSION_TAG" >> $GITHUB_ENV
+          echo "APK_BASENAME_PREFIX=$APK_BASENAME_PREFIX" >> $GITHUB_ENV
+
+          echo "Building APK for '$RELEASE_VERSION_NAME' build"
+          export TERMUX_FLOAT_APP_VERSION_NAME="${RELEASE_VERSION_NAME/v/}" # Used by app/build.gradle
+          export TERMUX_FLOAT_APK_VERSION_TAG="$APK_VERSION_TAG" # Used by app/build.gradle
+          if ! ./gradlew assembleDebug; then
+            exit_on_error "Build failed for '$RELEASE_VERSION_NAME' build."
+          fi
+
+          echo "Validating APK"
+          if ! test -f "$APK_DIR_PATH/${APK_BASENAME_PREFIX}.apk"; then
+            files_found="$(ls "$APK_DIR_PATH")"
+            exit_on_error "Failed to find built APK at '$APK_DIR_PATH/${APK_BASENAME_PREFIX}.apk'. Files found: "$'\n'"$files_found"
+          fi
+
+          echo "Generating sha25sums file"
+          if ! (cd "$APK_DIR_PATH"; sha256sum "${APK_BASENAME_PREFIX}.apk" > sha256sums); then
+            exit_on_error "Generate sha25sums failed for '$RELEASE_VERSION_NAME' release."
+          fi
+
+      - name: Attach files
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ env.APK_BASENAME_PREFIX }}
+          path: |
+            ${{ env.APK_DIR_PATH }}/${{ env.APK_BASENAME_PREFIX }}.apk
+            ${{ env.APK_DIR_PATH }}/sha256sums
+            ${{ env.APK_DIR_PATH }}/output-metadata.json

app/build.gradle

@@ -2,12 +2,18 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion project.properties.compileSdkVersion.toInteger()
+    def appVersionName = System.getenv("TERMUX_FLOAT_APP_VERSION_NAME") ?: ""
+    def apkVersionTag = System.getenv("TERMUX_FLOAT_APK_VERSION_TAG") ?: ""
+
     defaultConfig {
         applicationId "com.termux.window"
         minSdkVersion project.properties.minSdkVersion.toInteger()
         targetSdkVersion project.properties.targetSdkVersion.toInteger()
         versionCode 14
-        versionName "0.14"
+        versionName "0.14.0"
+
+        if (appVersionName) versionName = appVersionName
+        validateVersionName(versionName)
 
         manifestPlaceholders.TERMUX_PACKAGE_NAME = "com.termux"
         manifestPlaceholders.TERMUX_APP_NAME = "Termux"
@@ -44,8 +50,9 @@ android {
     applicationVariants.all { variant ->
         variant.outputs.all { output ->
             if (variant.buildType.name == "debug") {
-                def releaseTag = System.getenv("RELEASE_TAG")
-                outputFileName = new File("termux-float" + (releaseTag ? "-" + releaseTag : "") + "-debug.apk")
+                outputFileName = new File("termux-float_" + (apkVersionTag ? apkVersionTag : "debug") + ".apk")
+            } else if (variant.buildType.name == "release") {
+                outputFileName = new File("termux-float_" + (apkVersionTag ? apkVersionTag : "release") + ".apk")
             }
         }
     }
@@ -67,7 +74,14 @@ dependencies {
 }
 
 task versionName {
-  doLast {
-    print android.defaultConfig.versionName
-  }
+    doLast {
+        print android.defaultConfig.versionName
+    }
+}
+
+def validateVersionName(String versionName) {
+    // https://semver.org/spec/v2.0.0.html#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
+    // ^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$
+    if (!java.util.regex.Pattern.matches("^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-((?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?\$", versionName))
+        throw new GradleException("The versionName '" + versionName + "' is not a valid version as per semantic version '2.0.0' spec in the format 'major.minor.patch(-prerelease)(+buildmetadata)'. https://semver.org/spec/v2.0.0.html.")
 }