From edaa16cf358ab6f4ca1e20e011ad4cdcd68446cb Mon Sep 17 00:00:00 2001
From: harukin-OneMix4 <harukin@haruk.in>
Date: Fri, 2 Feb 2024 12:29:42 +0900
Subject: [PATCH] =?UTF-8?q?=E7=B5=90=E5=90=88=E5=87=A6=E7=90=86=E3=82=92?=
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---
 .../ActionSheetComponents/EachTrainInfo.js    | 130 +++++++++---------
 1 file changed, 63 insertions(+), 67 deletions(-)

diff --git a/components/ActionSheetComponents/EachTrainInfo.js b/components/ActionSheetComponents/EachTrainInfo.js
index becdb0e..84320ca 100644
--- a/components/ActionSheetComponents/EachTrainInfo.js
+++ b/components/ActionSheetComponents/EachTrainInfo.js
@@ -77,76 +77,72 @@ export const EachTrainInfo = (props) => {
   }, [trainData, showNearTrain]);
 
   const openBackTrainInfo = (stationInfo, currentTrainIndex) => {
-    const mainTrainStationPosition = trainData.findIndex(
-      (d) => d.split(",")[0] == stationInfo
-    );
+    const migrationArray = (stationInfo) => {
+      const mainTrainStationPosition = trainData.findIndex(
+        (d) => d.split(",")[0] == stationInfo
+      );
 
-    const relationMain = (() => {
-      if (mainTrainStationPosition == 0) return "head";
-      if (mainTrainStationPosition == trainData.length - 1) return "tail";
-      return "middle";
-    })();
+      const relationMain = (() => {
+        if (mainTrainStationPosition == 0) return "head";
+        if (mainTrainStationPosition == trainData.length - 1) return "tail";
+        return "middle";
+      })();
 
-    const subTrainStationPosition = showNearTrain.findIndex(
-      (d) => d.split(",")[0] == stationInfo
-    );
-    const relationSub = (() => {
-      if (subTrainStationPosition == 0) return "head";
-      if (subTrainStationPosition == showNearTrain.length - 1) return "tail";
-      return "middle";
-    })();
+      const subTrainStationPosition = showNearTrain.findIndex(
+        (d) => d.split(",")[0] == stationInfo
+      );
+      const relationSub = (() => {
+        if (subTrainStationPosition == 0) return "head";
+        if (subTrainStationPosition == showNearTrain.length - 1) return "tail";
+        return "middle";
+      })();
 
-    switch (relationMain) {
-      case "head":
-        if (relationSub == "head") {
-          break;
-        } else if (relationSub == "tail") {
-          const migrationTrainData = [
-            ...showNearTrain.slice(0, subTrainStationPosition),
-            ...trainData,
-          ];
-          setTrainData(migrationTrainData);
-        } else if (relationSub == "middle") {
-          const migrationTrainData = [
-            ...showNearTrain.slice(0, subTrainStationPosition),
-            ...trainData,
-          ];
-          setTrainData(migrationTrainData);
-        }
-        break;
-      case "tail":
-        if (relationSub == "head") {
-          const migrationTrainData = [
-            ...trainData.slice(0, mainTrainStationPosition),
-            ...showNearTrain,
-          ];
-          setTrainData(migrationTrainData);
-        } else if (relationSub == "tail") {
-          break;
-        } else if (relationSub == "middle") {
-          const migrationTrainData = [
-            ...trainData.slice(0, mainTrainStationPosition),
-            ...showNearTrain.slice(subTrainStationPosition),
-          ];
-          setTrainData(migrationTrainData);
-        }
-        break;
-      case "middle":
-        if (relationSub == "head") {
-          const migrationTrainData = [
-            ...trainData.slice(0, mainTrainStationPosition),
-            ...showNearTrain,
-          ];
-          setTrainData(migrationTrainData);
-        } else if (relationSub == "tail") {
-          const migrationTrainData = [
-            ...showNearTrain.slice(0, subTrainStationPosition),
-            ...trainData.slice(mainTrainStationPosition),
-          ];
-          setTrainData(migrationTrainData);
-        }
-        break;
-    }
+      switch (relationMain) {
+        case "head":
+          if (relationSub == "head") {
+            return;
+          } else if (relationSub == "tail") {
+            return [
+              ...showNearTrain.slice(0, subTrainStationPosition),
+              ...trainData,
+            ];
+          } else if (relationSub == "middle") {
+            return [
+              ...showNearTrain.slice(0, subTrainStationPosition),
+              ...trainData,
+            ];
+          } else return;
+        case "tail":
+          if (relationSub == "head") {
+            return [
+              ...trainData.slice(0, mainTrainStationPosition),
+              ...showNearTrain,
+            ];
+          } else if (relationSub == "tail") {
+            return;
+          } else if (relationSub == "middle") {
+            return [
+              ...trainData.slice(0, mainTrainStationPosition),
+              ...showNearTrain.slice(subTrainStationPosition),
+            ];
+          } else return;
+        case "middle":
+          if (relationSub == "head") {
+            return [
+              ...trainData.slice(0, mainTrainStationPosition),
+              ...showNearTrain,
+            ];
+          } else if (relationSub == "tail") {
+            return [
+              ...showNearTrain.slice(0, subTrainStationPosition),
+              ...trainData.slice(mainTrainStationPosition),
+            ];
+          } else return;
+      }
+    };
+    const array = migrationArray(stationInfo);
+    if (!array) return;
+    setTrainData(array);
     setIsConcatNear(true);
   };