Build Instructions

Welcome to my spaghetti

• Create composeApp/src/commonMain/kotlin/com/arn/scrobble/Tokens.kt

package com.arn.scrobble
object Tokens {
    const val LAST_KEY = "" // https://www.last.fm/api/account/create
    const val LAST_SECRET = ""
    // https://developer.spotify.com/dashboard/
    const val SPOTIFY_REFRESH_TOKEN = "<base64 of spotify client id>:<base64 of spotify client secret>"
    // returns {"code": 0, "message": "valid"} if the license is valid, this spec is subject to change
    const val LICENSE_CHECKING_SERVER = "https://"
    // RS256 public key, used to verify the license
    const val LICENSE_PUBLIC_KEY_BASE64 = ""
    const val PLAY_BILLING_PUBLIC_KEY_BASE64 = ""
    // password for the embedded https server BKS keystore, used for importing settings over local network
    const val EMBEDDED_SERVER_KEYSTORE_PASSWORD = ""
}

• Comment out the lines below // remove if not needed in composeApp/build.gradle.kts

• To generate the licenses files, run

  ./gradlew composeApp:exportLibraryDefinitions -PaboutLibraries.exportVariant=releaseGithub
  ./gradlew composeApp:exportLibraryDefinitions -PaboutLibraries.exportVariant=release
  ./gradlew composeApp:exportLibraryDefinitions -PaboutLibraries.exportVariant=desktop
  

For Android:

• Create a Firebase project for Crashlytics and add the google-services.json to composeApp/ See https://firebase.google.com/docs/android/setup

• Create a BKS keystore for the embedded https server used for the import/export feature over local network, with the password you used in EMBEDDED_SERVER_KEYSTORE_PASSWORD and alias selfsigned. Put it in composeApp/src/commonMain/composeResources/files/embedded_server.bks

• Obtain now playing notification strings and their translations by decompiling the resources of the Android System Intelligence apk with ApkTool and then running py-scripts/np-strings-extract.py on them.

Usage: python ./np-strings-extract.py <decompiled-dir> song_format_string np for scrobbling Pixel Now Playing.

Alternatively, you can use this as a stub in strings.xml:

<string name="song_format_string">%1$s by %2$s</string>

• To copy some android specific strings to android resources, from common resources, run the gradle task copyStringsToAndroid

• If you want to generate the optional baseline profile for the app, which can improve its startup time, create a file /baselineprofile/src/main/java/com/arn/scrobble/baselineprofile/Secrets.kt:

object Secrets {
    const val type = "lastfm"
    const val username = "<lastfmUsername>"
    const val sessionKey = "<lastfmSessionKey>"
}

sessionKey can be obtained by logging in to LastFM with a debug build of this app and tapping on the “Copy last.fm session key” in the settings screen.

• Info: the build variant “release” includes Google Play billing, Crashlytics (has opt out) and Google Play Review API as its non-free dependencies, while the build variant “releaseGithub” includes no non-free dependencies.

For desktop:

• Compile the native lib https://github.com/kawaiiDango/pano-native-components

• If you intend to package a build for desktop, use Bellsoft’s GraalVM based on OpenJDK 21 as your gradle JDK and run gradle packageUberJarForCurrentOS. Also have makensis.exe in your PATH for Windows.