internal static void ReadAndApplyFirebaseConfig()

in editor/app/src/XcodeProjectPatcher.cs [374:459]
73 lines of code
14 McCabe index (conditional complexity)

    internal static void ReadAndApplyFirebaseConfig(
            BuildTarget buildTarget, string pathToBuiltProject) {
        // DLLs that trigger post processing by this method.
        // We use the DLL names here as:
        // * Pod dependencies may not be present if frameworks are manually
        //   being included.
        // * DLLs may not be loaded in the Unity Editor App domain so we can't
        //   detect the module using reflection.
        var invitesDll = "Firebase.Invites.dll";
        var dllsThatRequireReversedClientId = new HashSet<string> {
            "Firebase.Auth.dll",
            "Firebase.DynamicLinks.dll",
            invitesDll
        };
        bool reversedClientIdRequired = false;
        bool invitesPresent = false;
        // Search the asset database for the DLLs to handle projects where
        // users move files around.
        foreach (var assetGuid in AssetDatabase.FindAssets("t:Object")) {
            var filename = Path.GetFileName(
                AssetDatabase.GUIDToAssetPath(assetGuid));
            if (dllsThatRequireReversedClientId.Contains(filename)) {
                reversedClientIdRequired = true;
                invitesPresent = filename == invitesDll;
            }
        }
        if (!(invitesPresent || reversedClientIdRequired)) {
            return;
        }
        ReadConfig();
        // Read required data from the config file.
        var configDict = GetConfig();
        if (configDict.Count == 0) return;
        string reversedClientId = null;
        string bundleId = null;
        if (!configDict.TryGetValue("REVERSED_CLIENT_ID",
                                    out reversedClientId)) {
            Measurement.analytics.Report("ios/xcodepatch/reversedclientid/failed",
                                         "Add Reversed Client ID Failed");
            Debug.LogError(
                String.Format(DocRef.PropertyMissingForGoogleSignIn,
                    GOOGLE_SERVICES_INFO_PLIST_FILE, "REVERSED_CLIENT_ID",
                    Link.IOSAddApp));
        }
        if (!configDict.TryGetValue("BUNDLE_ID", out bundleId)) {
            Debug.LogError(
                String.Format(DocRef.PropertyMissingForGoogleSignIn,
                    GOOGLE_SERVICES_INFO_PLIST_FILE, "BUNDLE_ID", Link.IOSAddApp));
        }

        // Update the Xcode project's Info.plist.
        string plistPath = Path.Combine(pathToBuiltProject, "Info.plist");
        var plist = new UnityEditor.iOS.Xcode.PlistDocument();
        plist.ReadFromString(File.ReadAllText(plistPath));
        var rootDict = plist.root;
        UnityEditor.iOS.Xcode.PlistElementArray urlTypes = null;
        if (rootDict.values.ContainsKey("CFBundleURLTypes")) {
            urlTypes = rootDict["CFBundleURLTypes"].AsArray();
        }
        if (urlTypes == null) {
            urlTypes = rootDict.CreateArray("CFBundleURLTypes");
        }
        if (reversedClientId != null) {
            var googleType = urlTypes.AddDict();
            googleType.SetString("CFBundleTypeRole", "Editor");
            googleType.SetString("CFBundleURLName", "google");
            googleType.CreateArray("CFBundleURLSchemes").AddString(
                reversedClientId);
            Measurement.analytics.Report("ios/xcodepatch/reversedclientid/success",
                                         "Add Reversed Client ID Successful");
        }
        if (bundleId != null) {
            var bundleType = urlTypes.AddDict();
            bundleType.SetString("CFBundleTypeRole", "Editor");
            bundleType.SetString("CFBundleURLName", bundleId);
            bundleType.CreateArray("CFBundleURLSchemes").AddString(bundleId);
        }
        // Invites needs usage permission to access Contacts.
        if (invitesPresent) {
          if (!rootDict.values.ContainsKey("NSContactsUsageDescription")) {
            rootDict.SetString("NSContactsUsageDescription", "Invite others to use the app.");
          }
        }
        // Finished, Write to File
        File.WriteAllText(plistPath, plist.WriteToString());
    }