Added background notifications

App.tsx

@@ -28,6 +28,7 @@ import StartStudying from "./src/routes/StartStudying/StartStudying";
 import { ToastProvider } from "react-native-toast-notifications";
 import InfoIcon from "./src/icons/InfoIcon/InfoIcon";
 import CreateGroup from "./src/routes/CreateGroup/CreateGroup";
+import BackgroundComponent from "./src/components/BackgroundTask/BackgroundTask";
 
 const Drawer = createDrawerNavigator();
 
@@ -66,11 +67,11 @@ export default function App() {
       icon={<InfoIcon size={32} />}
       textStyle={{ ...styles.text_white_tiny_bold }}
     >
+      <BackgroundComponent />
       <QueryClientProvider client={queryClient}>
         <Provider store={store}>
           <StatusBar style="light" />
 
-
           <NavigationContainer linking={linking} fallback={<Loading />}>
             <Drawer.Navigator
               initialRouteName="Revalidation"

package-lock.json

@@ -16,12 +16,15 @@
         "@tanstack/react-query": "^4.29.25",
         "axios": "^1.4.0",
         "expo": "~48.0.18",
+        "expo-background-fetch": "~11.1.1",
         "expo-file-system": "~15.2.2",
         "expo-image-picker": "~14.1.1",
         "expo-intent-launcher": "~10.5.2",
         "expo-linking": "~4.0.1",
         "expo-location": "~15.1.1",
+        "expo-notifications": "~0.18.1",
         "expo-status-bar": "~1.4.4",
+        "expo-task-manager": "~11.1.1",
         "moment": "^2.29.4",
         "moti": "^0.25.3",
         "react": "18.2.0",
@@ -3134,6 +3137,11 @@
         "@hapi/hoek": "^9.0.0"
       }
     },
+    "node_modules/@ide/backoff": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@ide/backoff/-/backoff-1.0.0.tgz",
+      "integrity": "sha512-F0YfUDjvT+Mtt/R4xdl2X0EYCHMMiJqNLdxHD++jDT5ydEFIyqbCHh51Qx2E211dgZprPKhV7sHmnXKpLuvc5g=="
+    },
     "node_modules/@jest/create-cache-key-function": {
       "version": "29.5.0",
       "resolved": "https://registry.npmjs.org/@jest/create-cache-key-function/-/create-cache-key-function-29.5.0.tgz",
@@ -5571,6 +5579,18 @@
       "resolved": "https://registry.npmjs.org/asap/-/asap-2.0.6.tgz",
       "integrity": "sha512-BSHWgDSAiKs50o2Re8ppvp3seVHXSRM44cdSsT9FfNEUUZLOGWVCsiWaRPWM1Znn+mqZ1OfVZ3z3DWEzSp7hRA=="
     },
+    "node_modules/assert": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/assert/-/assert-2.1.0.tgz",
+      "integrity": "sha512-eLHpSK/Y4nhMJ07gDaAzoX/XAKS8PSaojml3M0DM4JpV1LAi5JOJ/p6H/XWrl8L+DzVEvVCW1z3vWAaB9oTsQw==",
+      "dependencies": {
+        "call-bind": "^1.0.2",
+        "is-nan": "^1.3.2",
+        "object-is": "^1.1.5",
+        "object.assign": "^4.1.4",
+        "util": "^0.12.5"
+      }
+    },
     "node_modules/assign-symbols": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
@@ -5632,6 +5652,17 @@
         "node": ">= 4.5.0"
       }
     },
+    "node_modules/available-typed-arrays": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/available-typed-arrays/-/available-typed-arrays-1.0.5.tgz",
+      "integrity": "sha512-DMD0KiN46eipeziST1LPP/STfDU0sufISXmjSgvVsoU2tqxctQeASejWcfNtxYKqETM1UxQ8sp2OrSBWpHY6sw==",
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/axios": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/axios/-/axios-1.4.0.tgz",
@@ -5775,6 +5806,11 @@
         "@babel/core": "^7.0.0"
       }
     },
+    "node_modules/badgin": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/badgin/-/badgin-1.2.3.tgz",
+      "integrity": "sha512-NQGA7LcfCpSzIbGRbkgjgdWkjy7HI+Th5VLxTJfW5EeaAf3fnS+xWQaQOCYiny+q6QSvxqoSO04vCx+4u++EJw=="
+    },
     "node_modules/balanced-match": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@@ -6921,6 +6957,19 @@
         "node": ">=0.8"
       }
     },
+    "node_modules/define-data-property": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/define-data-property/-/define-data-property-1.1.0.tgz",
+      "integrity": "sha512-UzGwzcjyv3OtAvolTj1GoyNYzfFR+iqbGjcnBEENZVCpM4/Ng1yhGNvS3lR/xDS74Tb2wGG9WzNSNIOS9UVb2g==",
+      "dependencies": {
+        "get-intrinsic": "^1.2.1",
+        "gopd": "^1.0.1",
+        "has-property-descriptors": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
     "node_modules/define-lazy-prop": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/define-lazy-prop/-/define-lazy-prop-2.0.0.tgz",
@@ -6929,6 +6978,22 @@
         "node": ">=8"
       }
     },
+    "node_modules/define-properties": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.2.1.tgz",
+      "integrity": "sha512-8QmQKqEASLd5nx0U1B1okLElbUuuttJ/AnYmRXbbbGDWh6uS208EjD4Xqq/I9wK7u0v6O08XhTWnt5XtEbR6Dg==",
+      "dependencies": {
+        "define-data-property": "^1.0.1",
+        "has-property-descriptors": "^1.0.0",
+        "object-keys": "^1.1.1"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/define-property": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/define-property/-/define-property-2.0.2.tgz",
@@ -7435,6 +7500,17 @@
         "url-parse": "^1.5.9"
       }
     },
+    "node_modules/expo-background-fetch": {
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/expo-background-fetch/-/expo-background-fetch-11.1.1.tgz",
+      "integrity": "sha512-5X63ogpCqEqdqXYk4Sl4J8Lt/ZWcQCboS1pq3uprqD1KUi4ICl1P3gwPo+il3rYPV6xYb74Wv1KyyEEYj2vklg==",
+      "dependencies": {
+        "expo-task-manager": "~11.1.0"
+      },
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-constants": {
       "version": "14.2.1",
       "resolved": "https://registry.npmjs.org/expo-constants/-/expo-constants-14.2.1.tgz",
@@ -7645,11 +7721,74 @@
         "invariant": "^2.2.4"
       }
     },
+    "node_modules/expo-notifications": {
+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/expo-notifications/-/expo-notifications-0.18.1.tgz",
+      "integrity": "sha512-lOEiuPE6ubkS5u7Nj/57gkmUGD/MxsRTC6bg9SGJqXIitBQZk3Tmv9y8bjTrn71n7DsrH8K7xCZTbVwr+kLQGg==",
+      "dependencies": {
+        "@expo/image-utils": "^0.3.18",
+        "@ide/backoff": "^1.0.0",
+        "abort-controller": "^3.0.0",
+        "assert": "^2.0.0",
+        "badgin": "^1.1.5",
+        "expo-application": "~5.1.0",
+        "expo-constants": "~14.2.0",
+        "fs-extra": "^9.1.0",
+        "uuid": "^3.4.0"
+      },
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
+    "node_modules/expo-notifications/node_modules/fs-extra": {
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-9.1.0.tgz",
+      "integrity": "sha512-hcg3ZmepS30/7BSFqRvoo3DOMQu7IjqxO5nCDt+zM9XWjb33Wg7ziNT+Qvqbuc3+gWpzO02JubVyk2G4Zvo1OQ==",
+      "dependencies": {
+        "at-least-node": "^1.0.0",
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/expo-notifications/node_modules/jsonfile": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.1.0.tgz",
+      "integrity": "sha512-5dgndWOriYSm5cnYaJNhalLNDKOqFwyDB/rr1E9ZsGciGvKPs8R2xYGCacuf3z6K1YKDz182fd+fY3cn3pMqXQ==",
+      "dependencies": {
+        "universalify": "^2.0.0"
+      },
+      "optionalDependencies": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
+    "node_modules/expo-notifications/node_modules/universalify": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
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+      "engines": {
+        "node": ">= 10.0.0"
+      }
+    },
     "node_modules/expo-status-bar": {
       "version": "1.4.4",
       "resolved": "https://registry.npmjs.org/expo-status-bar/-/expo-status-bar-1.4.4.tgz",
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     },
+    "node_modules/expo-task-manager": {
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/expo-task-manager/-/expo-task-manager-11.1.1.tgz",
+      "integrity": "sha512-Ot4wq0fVd8+I1W7MsJz0rNdX0ma/zdnBvAppxDX1Oo0o0exo4qs1FmgrTnh3OBnn18aB4cX3wBJoXIatIgNMZQ==",
+      "dependencies": {
+        "unimodules-app-loader": "~4.1.0"
+      },
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/extend-shallow": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-3.0.2.tgz",
@@ -7955,6 +8094,14 @@
       "resolved": "https://registry.npmjs.org/fontfaceobserver/-/fontfaceobserver-2.3.0.tgz",
       "integrity": "sha512-6FPvD/IVyT4ZlNe7Wcn5Fb/4ChigpucKYSvD6a+0iMoLn2inpo711eyIcKjmDtE5XNcgAkSH9uN/nfAeZzHEfg=="
     },
+    "node_modules/for-each": {
+      "version": "0.3.3",
+      "resolved": "https://registry.npmjs.org/for-each/-/for-each-0.3.3.tgz",
+      "integrity": "sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==",
+      "dependencies": {
+        "is-callable": "^1.1.3"
+      }
+    },
     "node_modules/for-in": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
@@ -8187,6 +8334,17 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/gopd": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.0.1.tgz",
+      "integrity": "sha512-d65bNlIadxvpb/A2abVdlqKqV563juRnZ1Wtk6s1sIR8uNsXR70xqIzVqxVf1eTqDunwT2MkczEeaezCKTZhwA==",
+      "dependencies": {
+        "get-intrinsic": "^1.1.3"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/graceful-fs": {
       "version": "4.2.11",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.11.tgz",
@@ -8233,6 +8391,17 @@
         "node": ">=4"
       }
     },
+    "node_modules/has-property-descriptors": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/has-property-descriptors/-/has-property-descriptors-1.0.0.tgz",
+      "integrity": "sha512-62DVLZGoiEBDHQyqG4w9xCuZ7eJEwNmJRWw2VY84Oedb7WFcA27fiEVe8oUQx9hAUJ4ekurquucTGwsyO1XGdQ==",
+      "dependencies": {
+        "get-intrinsic": "^1.1.1"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/has-proto": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/has-proto/-/has-proto-1.0.1.tgz",
@@ -8255,6 +8424,20 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/has-tostringtag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/has-tostringtag/-/has-tostringtag-1.0.0.tgz",
+      "integrity": "sha512-kFjcSNhnlGV1kyoGk7OXKSawH5JOb/LzUc5w9B02hOTO0dfFRjbHQKvg1d6cf3HbeUmtU9VbbV3qzZ2Teh97WQ==",
+      "dependencies": {
+        "has-symbols": "^1.0.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/has-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/has-value/-/has-value-1.0.0.tgz",
@@ -8587,6 +8770,21 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/is-arguments": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/is-arguments/-/is-arguments-1.1.1.tgz",
+      "integrity": "sha512-8Q7EARjzEnKpt/PCD7e1cgUS0a6X8u5tdSiMqXhojOdoV9TsMsiO+9VLC5vAmO8N7/GmXn7yjR8qnA6bVAEzfA==",
+      "dependencies": {
+        "call-bind": "^1.0.2",
+        "has-tostringtag": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/is-arrayish": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.2.1.tgz",
@@ -8597,6 +8795,17 @@
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     },
+    "node_modules/is-callable": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.7.tgz",
+      "integrity": "sha512-1BC0BVFhS/p0qtw6enp8e+8OD0UrK0oFLztSjNzhcKA3WDuJxxAPXzPuPtKkjEY9UUoEWlX/8fgKeu2S8i9JTA==",
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/is-core-module": {
       "version": "2.12.1",
       "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.12.1.tgz",
@@ -8681,6 +8890,20 @@
         "node": ">=4"
       }
     },
+    "node_modules/is-generator-function": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/is-generator-function/-/is-generator-function-1.0.10.tgz",
+      "integrity": "sha512-jsEjy9l3yiXEQ+PsXdmBwEPcOxaXWLspKdplFUVI9vq1iZgIekeC0L167qeu86czQaxed3q/Uzuw0swL0irL8A==",
+      "dependencies": {
+        "has-tostringtag": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/is-glob": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
@@ -8730,6 +8953,21 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/is-nan": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/is-nan/-/is-nan-1.3.2.tgz",
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+      "dependencies": {
+        "call-bind": "^1.0.0",
+        "define-properties": "^1.1.3"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/is-number": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
@@ -8789,6 +9027,20 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/is-typed-array": {
+      "version": "1.1.12",
+      "resolved": "https://registry.npmjs.org/is-typed-array/-/is-typed-array-1.1.12.tgz",
+      "integrity": "sha512-Z14TF2JNG8Lss5/HMqt0//T9JeHXttXy5pH/DBU4vi98ozO2btxzq9MwYDZYnKwU8nRsz/+GVFVRDq3DkVuSPg==",
+      "dependencies": {
+        "which-typed-array": "^1.1.11"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/is-unicode-supported": {
       "version": "0.1.0",
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@@ -11499,6 +11751,29 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/object-is": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/object-is/-/object-is-1.1.5.tgz",
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+      "dependencies": {
+        "call-bind": "^1.0.2",
+        "define-properties": "^1.1.3"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/object-keys": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
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+      "engines": {
+        "node": ">= 0.4"
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+    },
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       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/object-visit/-/object-visit-1.0.1.tgz",
@@ -11510,6 +11785,23 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/object.assign": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/object.assign/-/object.assign-4.1.4.tgz",
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+      "dependencies": {
+        "call-bind": "^1.0.2",
+        "define-properties": "^1.1.4",
+        "has-symbols": "^1.0.3",
+        "object-keys": "^1.1.1"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/object.pick": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/object.pick/-/object.pick-1.3.0.tgz",
@@ -14237,6 +14529,11 @@
         "node": ">=4"
       }
     },
+    "node_modules/unimodules-app-loader": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/unimodules-app-loader/-/unimodules-app-loader-4.1.2.tgz",
+      "integrity": "sha512-DLYUCjNpguFhNpxNsBf47NWZi2OjIfWCVQY4f+r4/bwIqFfR7qQd6lXwCFA8EhHS1ti87CBzjMSbIC5bB0J/0Q=="
+    },
     "node_modules/union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
@@ -14428,6 +14725,18 @@
         "react": "^16.8.0 || ^17.0.0 || ^18.0.0"
       }
     },
+    "node_modules/util": {
+      "version": "0.12.5",
+      "resolved": "https://registry.npmjs.org/util/-/util-0.12.5.tgz",
+      "integrity": "sha512-kZf/K6hEIrWHI6XqOFUiiMa+79wE/D8Q+NCNAWclkyg3b4d2k7s0QGepNjiABc+aR3N1PAyHL7p6UcLY6LmrnA==",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "is-arguments": "^1.0.4",
+        "is-generator-function": "^1.0.7",
+        "is-typed-array": "^1.1.3",
+        "which-typed-array": "^1.1.2"
+      }
+    },
     "node_modules/util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -14532,6 +14841,24 @@
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.1.tgz",
       "integrity": "sha512-iBdZ57RDvnOR9AGBhML2vFZf7h8vmBjhoaZqODJBFWHVtKkDmKuHai3cx5PgVMrX5YDNp27AofYbAwctSS+vhQ=="
     },
+    "node_modules/which-typed-array": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/which-typed-array/-/which-typed-array-1.1.11.tgz",
+      "integrity": "sha512-qe9UWWpkeG5yzZ0tNYxDmd7vo58HDBc39mZ0xWWpolAGADdFOzkfamWLDxkOWcvHQKVmdTyQdLD4NOfjLWTKew==",
+      "dependencies": {
+        "available-typed-arrays": "^1.0.5",
+        "call-bind": "^1.0.2",
+        "for-each": "^0.3.3",
+        "gopd": "^1.0.1",
+        "has-tostringtag": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/wonka": {
       "version": "4.0.15",
       "resolved": "https://registry.npmjs.org/wonka/-/wonka-4.0.15.tgz",

package.json

@@ -41,7 +41,10 @@
     "react-native-toast-notifications": "^3.3.1",
     "react-query": "^3.39.3",
     "react-redux": "^8.1.1",
-    "redux": "^4.2.1"
+    "redux": "^4.2.1",
+    "expo-task-manager": "~11.1.1",
+    "expo-background-fetch": "~11.1.1",
+    "expo-notifications": "~0.18.1"
   },
   "devDependencies": {
     "@babel/core": "^7.20.0",

src/components/BackgroundTask/BackgroundTask.tsx

@@ -0,0 +1,84 @@
+import React, { useEffect } from "react";
+import { View } from "react-native";
+import * as BackgroundFetch from "expo-background-fetch";
+import * as TaskManager from "expo-task-manager";
+import * as Notifications from "expo-notifications";
+import {
+  GetStudentStatus,
+  GetStudyGroupListFiltered,
+  GetUserInfo,
+} from "../Api/Api";
+import { StudyGroupType } from "../../interfaces/Interfaces";
+
+const FETCH_STUDENT_STATUS = "STUDENT_STATUS_TASK";
+
+TaskManager.defineTask(FETCH_STUDENT_STATUS, async () => {
+  const data = await GetStudyGroupListFiltered();
+  const student_status_data = await GetStudentStatus();
+  if (data[0] && data[1].length > -1) {
+    console.log("Background Fetch", data[1]);
+    const entryWithLeastDistance = data[1].reduce(
+      (prev: StudyGroupType, curr: StudyGroupType) => {
+        return prev.distance < curr.distance ? prev : curr;
+      }
+    );
+    // Only display a notification if a student isn't in a study group yet
+    if (
+      student_status_data[1].study_group == null ||
+      student_status_data[1].study_group == ""
+    ) {
+      Notifications.scheduleNotificationAsync({
+        content: {
+          title: "Students are studying nearby",
+          body: `Nearest study group is ${Math.round(
+            entryWithLeastDistance.distance * 1000
+          )}m away`,
+        },
+        trigger: {
+          seconds: 1,
+        },
+      });
+    }
+  } else {
+    console.log(data[1].response.data);
+  }
+
+  return BackgroundFetch.BackgroundFetchResult.NewData;
+});
+
+const BackgroundComponent = () => {
+  const [isRegistered, setIsRegistered] = React.useState(false);
+  const [status, setStatus] = React.useState<any>();
+  const checkStatusAsync = async () => {
+    const status = await BackgroundFetch.getStatusAsync();
+    const isRegistered = await TaskManager.isTaskRegisteredAsync(
+      FETCH_STUDENT_STATUS
+    );
+    setStatus(status);
+    setIsRegistered(isRegistered);
+  };
+
+  useEffect(() => {
+    const registerTask = async () => {
+      try {
+        await checkStatusAsync();
+        if (!isRegistered) {
+          await BackgroundFetch.registerTaskAsync(FETCH_STUDENT_STATUS, {
+            minimumInterval: 5, // seconds,
+          });
+          console.log("Task registered");
+        } else {
+          console.log("Task already registered");
+        }
+      } catch (err) {
+        console.log("Task Register failed:", err);
+      }
+    };
+
+    registerTask();
+  }, []);
+
+  return <View />;
+};
+
+export default BackgroundComponent;