private static async _getSqlPackageInstalledWithSSDT()

in src/AzureSqlActionHelper.ts [224:259]
30 lines of code
7 McCabe index (conditional complexity)

    private static async _getSqlPackageInstalledWithSSDT(): Promise<ISqlPackageInstall> {
        let visualStudioInstallationPath = await this._getLatestVisualStudioInstallationPath();
        if (!!visualStudioInstallationPath) {
            let dacParentDir = path.join(visualStudioInstallationPath, 'Common7', 'IDE', 'Extensions', 'Microsoft', 'SQLDB', 'DAC');
            let sqlPackageInstallationPath = this._getSqlPackageInVSDacDirectory(dacParentDir);
            if (!!sqlPackageInstallationPath[0]) {
                return sqlPackageInstallationPath;
            }
        }
        
        // locate SqlPackage in older versions
        let vsRegKey = path.join('\\', 'SOFTWARE', 'Microsoft', 'VisualStudio');
        let vsRegKeyWow6432 = path.join('\\', 'SOFTWARE', 'Wow6432Node', 'Microsoft', 'VisualStudio');

        if (!await AzureSqlActionHelper.registryKeyExists(vsRegKey)) {
            vsRegKey = vsRegKeyWow6432;
            if (!await AzureSqlActionHelper.registryKeyExists(vsRegKey)) {
                return this._emptySqlPackageInstall();
            }
        }

        let subKeys = await AzureSqlActionHelper.getRegistrySubKeys(vsRegKey);
        let vsVersionKeys = this._getVersionsRegistryKeys(subKeys);

        for (let vsVersionKey of vsVersionKeys) {
            let vsInstallDir = await AzureSqlActionHelper.getRegistryValue(vsVersionKey, 'InstallDir');
            let dacParentDir = path.join(vsInstallDir, 'Common7', 'IDE', 'Extensions', 'Microsoft', 'SQLDB', 'DAC');
            let sqlPackageInstallationPath = this._getSqlPackageInVSDacDirectory(dacParentDir);
            if (!!sqlPackageInstallationPath[0]) {
                return sqlPackageInstallationPath;
            }
        }

        core.debug('Dac Framework (installed with Visual Studio) not found on machine.');
        return this._emptySqlPackageInstall();
    }