Convert aab(Android App Bundle) file to apk file

aab2apk.ps1

param($PACKAGE_NAME)

$KEY_STORE = ""
$KEY_STORE_PASSWORD = ""
$KEY_ALIAS = ""
$KEY_PASSWORD = ""

# get latest bundle tool info
$GITHUB_REQUEST = Invoke-RestMethod "https://api.github.com/repos/google/bundletool/releases/latest"
$GITHUB_ASSET = $GITHUB_REQUEST.assets[0]

# check exists bundle tool
$BUNDLE_TOOL_NAME = $GITHUB_ASSET.name
if (-Not (Test-Path $BUNDLE_TOOL_NAME))
{
    # download bundle tool
    $BUNDLE_TOOL_DOWNLOAD_URL = $GITHUB_ASSET.browser_download_url
    echo "Downloading latest bundle tool: $BUNDLE_TOOL_NAME"
    Invoke-WebRequest $BUNDLE_TOOL_DOWNLOAD_URL -OutFile $BUNDLE_TOOL_NAME
}

# generate apk file
echo "Generating APK file..."
java -jar $BUNDLE_TOOL_NAME build-apks --mode=universal `
--bundle="$PACKAGE_NAME.aab" --output="$PACKAGE_NAME.apks" `
--ks=$KEY_STORE `
--ks-pass=pass:$KEY_STORE_PASSWORD `
--ks-key-alias=$KEY_ALIAS `
--key-pass=pass:$KEY_PASSWORD

# unzip apks file
Expand-Archive "$PACKAGE_NAME.apks" -DestinationPath .

# get result file
rm "$PACKAGE_NAME.apks"
rm toc.pb
mv universal.apk "$PACKAGE_NAME.apk"

example.sh

$ aab2apk com.companyname.appname
Downloading latest bundle tool: bundletool-all-0.14.0.jar
Generating APK file...
$ Test-Path .\com.companyname.appname.apk
True