From 6e3ba4f86bf3f25d27af66cfcd4f5739e767b208 Mon Sep 17 00:00:00 2001
From: "Thomas F. K. Jorna" <thomasfkjorna@gmail.com>
Date: Thu, 15 Jul 2021 22:48:14 +0200
Subject: prevent data writing every update

---
 app/screens/graph/graph-screen.tsx | 127 +++++++++++++++++++------------------
 1 file changed, 65 insertions(+), 62 deletions(-)

(limited to 'app/screens/graph')

diff --git a/app/screens/graph/graph-screen.tsx b/app/screens/graph/graph-screen.tsx
index e6fbc19..da3734a 100644
--- a/app/screens/graph/graph-screen.tsx
+++ b/app/screens/graph/graph-screen.tsx
@@ -9,7 +9,7 @@ import { color } from "../../theme"
 import { Graph } from "../../components"
 import { Tweaks } from "../../components"
 
-import genRandomTree from "../../data/randomdata";
+import genRandomTree from "../../data/randomdata"
 
 import AsyncStorage from "@react-native-async-storage/async-storage"
 
@@ -24,79 +24,82 @@ export const GraphScreen = observer(function GraphScreen() {
 
   // Pull in navigation via hook
   // const navigation = useNavigation()
-  const [charge, setCharge] = useState(-30);
-  const [collision, setCollision] = useState(false);
-  const [linkStrength, setLinkStrength] = useState(1);
-  const [linkIts, setLinkIts] = useState(1);
-
-    const [physics, setPhysics] = useState({});
+  const [charge, setCharge] = useState(-30)
+  const [collision, setCollision] = useState(false)
+  const [linkStrength, setLinkStrength] = useState(1)
+  const [linkIts, setLinkIts] = useState(1)
 
+  const [physics, setPhysics] = useState({})
+  const physicsInit = {
+    charge: -30,
+    collision: false,
+    linkStrength: 1,
+    linkIts: 1,
+    collapse: false,
+    threedim: false,
+    particles: 2,
+    linkOpacity: 1,
+    linkWidth: 1,
+    particleWidth: 1,
+    nodeRel: 1,
+  }
   const getData = async () => {
     try {
-      const value = await AsyncStorage.getItem('@physics')
-      if (value !== null) {
-          return JSON.parse(value);
+      const value = await AsyncStorage.getItem("@physics")
+      if (value !== null || keys(value) === keys(physicsInit)) {
+        return JSON.parse(value)
       } else {
-        return (
-          {
-            charge: -30,
-            collision: false,
-            linkStrength: 1,
-            linkIts: 1,
-            collapse: false,
-            threedim: false,
-            particles: 2,
-          });
+        console.log(physicsInit)
+        return physicsInit
       }
     } catch (e) {
-      console.log(e);
+      console.log(e)
     }
-  };
+  }
 
-    useEffect(() => {
-        getData()
-        .then(data => setPhysics(data));
-    }, []);
+  useEffect(() => {
+    getData().then((data) => setPhysics(data))
+  }, [])
 
-        const storeData = async (value) => {
-            try {
-              const jsonValue = JSON.stringify(value);
-              await AsyncStorage.setItem('@physics', jsonValue);
-              console.log("Writing " + jsonValue);
-            } catch(e) {
-                console.log(e);
-            }
-        }
+  const storeData = async (value) => {
+    try {
+      const jsonValue = JSON.stringify(value)
+      await AsyncStorage.setItem("@physics", jsonValue)
+      console.log("Writing " + jsonValue)
+    } catch (e) {
+      console.log(e)
+    }
+  }
   /* const [physics, setPhysics] = useState(
-*     {
-*         charge: -30,
-*         collision: false,
-*         linkStrength: 1,
-*         linkIts: 1,
-*         collapse: false,
-*         threedim: false,
-*         particles: 2,
-*       }); */
-    useEffect(() => {
-      console.log("Physics changed");
-      storeData(physics);
-      const test = getData();
-      console.log(test);
-    }, [physics]);
+   *     {
+   *         charge: -30,
+   *         collision: false,
+   *         linkStrength: 1,
+   *         linkIts: 1,
+   *         collapse: false,
+   *         threedim: false,
+   *         particles: 2,
+   *       }); */
+  useEffect(() => {
+    if (timer) {
+      clearTimeout(timer)
+      console.log("clear timer")
+    }
+    const timer = setTimeout(() => {
+      console.log("Physics changed")
+      storeData(physics)
+      const test = getData()
+      console.log(test)
+    }, 1000)
+    return () => clearTimeout(timer)
+  }, [physics])
 
-  const gData = genRandomTree();
+  const gData = genRandomTree()
 
   return (
     <Screen style={ROOT} preset="scroll">
-      <Text preset="header" text="Graph" />
-      <Tweaks
-        physics={physics}
-        setPhysics={setPhysics}
-      />
-      <Graph
-        physics={physics}
-        gData={gData}
-      />
+      <Tweaks physics={physics} setPhysics={setPhysics} />
+      <Graph physics={physics} gData={gData} />
     </Screen>
-  );
-});
+  )
+})
-- 
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