Add background workers functionality and notification background support

uni/android/app/build.gradle

@@ -32,7 +32,7 @@ if (keystorePropertiesFile.exists()) {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdkVersion 33 
     ndkVersion flutter.ndkVersion
 
     compileOptions {

uni/ios/Flutter/AppFrameworkInfo.plist

@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>9.0</string>
+  <string>11.0</string>
 </dict>
 </plist>

uni/ios/Runner.xcodeproj/project.pbxproj

@@ -3,13 +3,14 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 51;
 	objects = {
 
 /* Begin PBXBuildFile section */
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
+		95F65346A056DDFB0CCCED79 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 65A7FEFFF94135D00ABAE9B9 /* Pods_Runner.framework */; };
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
@@ -29,9 +30,13 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		116479123E23B6BA4733EC22 /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
 		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
 		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		1946AAAAFCF4B47B8541DAAE /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
+		34F7CD5BD9DE233CE39A0794 /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
 		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
+		65A7FEFFF94135D00ABAE9B9 /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
 		74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
@@ -49,12 +54,23 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				95F65346A056DDFB0CCCED79 /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		227A5121A8917F9CC04F8063 /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				116479123E23B6BA4733EC22 /* Pods-Runner.debug.xcconfig */,
+				1946AAAAFCF4B47B8541DAAE /* Pods-Runner.release.xcconfig */,
+				34F7CD5BD9DE233CE39A0794 /* Pods-Runner.profile.xcconfig */,
+			);
+			path = Pods;
+			sourceTree = "<group>";
+		};
 		9740EEB11CF90186004384FC /* Flutter */ = {
 			isa = PBXGroup;
 			children = (
@@ -72,6 +88,8 @@
 				9740EEB11CF90186004384FC /* Flutter */,
 				97C146F01CF9000F007C117D /* Runner */,
 				97C146EF1CF9000F007C117D /* Products */,
+				227A5121A8917F9CC04F8063 /* Pods */,
+				DCEE3166979EF19DFB76E949 /* Frameworks */,
 			);
 			sourceTree = "<group>";
 		};
@@ -98,19 +116,29 @@
 			path = Runner;
 			sourceTree = "<group>";
 		};
+		DCEE3166979EF19DFB76E949 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				65A7FEFFF94135D00ABAE9B9 /* Pods_Runner.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
 		97C146ED1CF9000F007C117D /* Runner */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */;
 			buildPhases = (
+				AD47D7787757870A61A69CBD /* [CP] Check Pods Manifest.lock */,
 				9740EEB61CF901F6004384FC /* Run Script */,
 				97C146EA1CF9000F007C117D /* Sources */,
 				97C146EB1CF9000F007C117D /* Frameworks */,
 				97C146EC1CF9000F007C117D /* Resources */,
 				9705A1C41CF9048500538489 /* Embed Frameworks */,
 				3B06AD1E1E4923F5004D2608 /* Thin Binary */,
+				B72AED15C931F2FF135F33E9 /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -197,6 +225,45 @@
 			shellPath = /bin/sh;
 			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
 		};
+		AD47D7787757870A61A69CBD /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputFileListPaths = (
+			);
+			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
+		};
+		B72AED15C931F2FF135F33E9 /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-input-files.xcfilelist",
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputFileListPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-output-files.xcfilelist",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 /* End PBXShellScriptBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
@@ -288,8 +355,10 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = ADS6V5HXNQ;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -416,8 +485,10 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = ADS6V5HXNQ;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -438,8 +509,10 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = ADS6V5HXNQ;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

uni/ios/Runner/AppDelegate.swift

@@ -1,5 +1,7 @@
 import UIKit
 import Flutter
+import workmanager
+import flutter_local_notifications
 
 @UIApplicationMain
 @objc class AppDelegate: FlutterAppDelegate {
@@ -8,6 +10,16 @@ import Flutter
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
     GeneratedPluginRegistrant.register(with: self)
+    WorkmanagerPlugin.registerTask(withIdentifier:"pt.up.fe.ni.uni.notificationworker")
+    UIApplication.shared.setMinimumBackgroundFetchInterval(TimeInterval(60*15))
+    //in case we have a notification with actions 
+    FlutterLocalNotificationsPlugin.setPluginRegistrantCallback { (registry) in
+        GeneratedPluginRegistrant.register(with: registry)
+    }
+
+    if #available(iOS 10.0, *) {
+      UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
+    }
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
 }

uni/ios/Runner/Info.plist

@@ -2,6 +2,10 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>BGTaskSchedulerPermittedIdentifiers</key>
+	<array>
+		<string>pt.up.fe.ni.uni.notificationworker</string>
+	</array>
 	<key>CADisableMinimumFrameDurationOnPhone</key>
 	<true/>
 	<key>CFBundleDevelopmentRegion</key>
@@ -40,6 +44,16 @@
 	<true/>
 	<key>NSCalendarsUsageDescription</key>
 	<string>Exportar exames e eventos para o calendário</string>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UISceneConfigurations</key>
+		<dict/>
+	</dict>
+	<key>UIBackgroundModes</key>
+	<array>
+		<string>fetch</string>
+		<string>processing</string>
+	</array>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIMainStoryboardFile</key>

uni/lib/controller/background_workers/background_callback.dart

@@ -0,0 +1,42 @@
+import 'package:logger/logger.dart';
+import 'package:tuple/tuple.dart';
+import 'package:uni/controller/background_workers/notifications.dart';
+import 'package:workmanager/workmanager.dart';
+
+/// This map contains the functions that a certain task type will run.
+/// the bool is all functions that are ran by backgroundfetch in iOS
+/// (they must not take any arguments, not checked)
+const taskMap = {
+  "pt.up.fe.ni.uni.notificationworker":
+      Tuple2(NotificationManager.updateAndTriggerNotifications, true)
+};
+
+@pragma('vm:entry-point')
+// This function is android only and only executes when the app is complety terminated
+void workerStartCallback() async {
+  Workmanager().executeTask((taskName, inputData) async {
+    try {
+      Logger().d("""[$taskName]: Start executing job...""");
+
+      //iOSBackgroundTask is a special task, that iOS runs whenever it deems necessary
+      //and will run all tasks with the flag true
+      //NOTE: keep the total execution time under 30s to avoid being punished by the iOS scheduler.
+      if (taskName == Workmanager.iOSBackgroundTask) {
+        taskMap.forEach((key, value) async {
+          if (value.item2) {
+            Logger().d("""[$key]: Start executing job...""");
+            await value.item1();
+          }
+        });
+        return true;
+      }
+      //try to keep the usage of this function BELOW +-30 seconds
+      //to not be punished by the scheduler in future runs.
+      await taskMap[taskName]!.item1();
+    } catch (err, stackstrace) {
+      Logger().e("Error while running $taskName job:", err, stackstrace);
+      return false;
+    }
+    return true;
+  });
+}