// Signs release builds with the musicshare upload key when it's configured in
// ~/.gradle/gradle.properties (MUSICSHARE_UPLOAD_STORE_FILE, _STORE_PASSWORD,
// _KEY_ALIAS, _KEY_PASSWORD). Without it the release APK is left unsigned, which
// is what F-Droid expects (it signs with its own key). The key never lives in the repo.
const { withAppBuildGradle } = require('expo/config-plugins');

const MARKER = '// musicshare release signing';

const SIGNING_CONFIG = `
        ${MARKER}
        release {
            if (project.hasProperty('MUSICSHARE_UPLOAD_STORE_FILE')) {
                storeFile file(MUSICSHARE_UPLOAD_STORE_FILE)
                storePassword MUSICSHARE_UPLOAD_STORE_PASSWORD
                keyAlias MUSICSHARE_UPLOAD_KEY_ALIAS
                keyPassword MUSICSHARE_UPLOAD_KEY_PASSWORD
            }
        }`;

module.exports = function withReleaseSigning(config) {
  return withAppBuildGradle(config, (cfg) => {
    let gradle = cfg.modResults.contents;
    if (gradle.includes(MARKER)) return cfg;

    // Add a release signing config next to the debug one.
    gradle = gradle.replace(/signingConfigs\s*\{/, (m) => `${m}${SIGNING_CONFIG}`);

    // In the release build type, use it when the key is configured.
    const release = gradle.indexOf('release {', gradle.indexOf('buildTypes {'));
    if (release === -1) throw new Error('withReleaseSigning: no release build type in app/build.gradle');
    const line = gradle.indexOf('signingConfig signingConfigs.debug', release);
    if (line === -1) throw new Error('withReleaseSigning: release build type has no signingConfig line');
    gradle =
      gradle.slice(0, line) +
      "signingConfig project.hasProperty('MUSICSHARE_UPLOAD_STORE_FILE') ? signingConfigs.release : null" +
      gradle.slice(line + 'signingConfig signingConfigs.debug'.length);

    cfg.modResults.contents = gradle;
    return cfg;
  });
};