app/(application)/(user)/investment/[id]/(transaction-flow)/index.tsx

@@ -1,3 +1,4 @@
+/* eslint-disable react-hooks/exhaustive-deps */
 import {
   BaseBox,
   BoxButtonOnFooter,
@@ -9,16 +10,72 @@ import {
   TextInputCustom,
   ViewWrapper,
 } from "@/components";
-import { router, useLocalSearchParams } from "expo-router";
+import { apiInvestmentGetOne } from "@/service/api-client/api-investment";
+import { formatCurrencyDisplay } from "@/utils/formatCurrencyDisplay";
+import { router, useFocusEffect, useLocalSearchParams } from "expo-router";
+import { useCallback, useState } from "react";
 
 export default function InvestmentInvest() {
   const { id } = useLocalSearchParams();
+  // console.log("[ID]", id);
+  const [data, setData] = useState<any>(null);
+  const [value, setValue] = useState<number>(0);
+  const [total, setTotal] = useState<number>(0);
+  const [sisaLembar, setSisaLembar] = useState<number>(0);
+
+  useFocusEffect(
+    useCallback(() => {
+      onLoadData();
+    }, [id])
+  );
+
+  const onLoadData = async () => {
+    try {
+      const response = await apiInvestmentGetOne({
+        id: id as string,
+      });
+
+      setData(response.data);
+      setSisaLembar(response.data?.sisaLembar);
+    } catch (error) {
+      console.log("[ERROR]", error);
+    }
+  };
+
+  const handleTextChange = (text: string) => {
+    // Izinkan input kosong → anggap sebagai 0 (atau abaikan, tergantung UX)
+    if (text === "") {
+      setValue(0);
+      setTotal(0);
+      return;
+    }
+
+    // Regex: hanya digit (angka bulat positif)
+    const integerRegex = /^\d+$/;
+
+    if (integerRegex.test(text)) {
+      const numValue = Number(text);
+      // Karena regex sudah pastikan hanya angka, isNaN biasanya false
+      // Tapi tetap aman untuk cek
+      if (!isNaN(numValue)) {
+        setValue(numValue);
+        setTotal(numValue * Number(data?.hargaLembar));
+        console.log("[VALUE]", numValue);
+      }
+    }
+    // Jika input tidak valid (misal: "12a", "12."), abaikan → state tidak berubah
+  };
 
   const buttonSubmit = () => {
     return (
       <>
         <BoxButtonOnFooter>
-          <ButtonCustom onPress={() => router.push(`/investment/${id}/select-bank`)}>Beli</ButtonCustom>
+          <ButtonCustom
+            disabled={value < 10 || value >= sisaLembar}
+            onPress={() => router.push(`/investment/${id}/select-bank`)}
+          >
+            Beli {value}, {sisaLembar}
+          </ButtonCustom>
         </BoxButtonOnFooter>
       </>
     );
@@ -34,7 +91,7 @@ export default function InvestmentInvest() {
                 <TextCustom>Sisa Lembar Saham</TextCustom>
               </Grid.Col>
               <Grid.Col span={6} style={{ alignItems: "flex-end" }}>
-                <TextCustom>3.000</TextCustom>
+                <TextCustom>{data?.sisaLembar || "-"}</TextCustom>
               </Grid.Col>
             </Grid>
             <Grid>
@@ -42,7 +99,7 @@ export default function InvestmentInvest() {
                 <TextCustom>Harga Per Lembar</TextCustom>
               </Grid.Col>
               <Grid.Col span={6} style={{ alignItems: "flex-end" }}>
-                <TextCustom>Rp. 1.000</TextCustom>
+                <TextCustom>{data?.hargaLembar || "-"}</TextCustom>
               </Grid.Col>
             </Grid>
             <Grid>
@@ -69,6 +126,10 @@ export default function InvestmentInvest() {
                   }}
                   placeholder="0"
                   keyboardType="numeric"
+                  value={value.toString()}
+                  onChangeText={(value) => {
+                    handleTextChange(value);
+                  }}
                 />
               </Grid.Col>
             </Grid>
@@ -78,7 +139,7 @@ export default function InvestmentInvest() {
                 <TextCustom>Total Harga</TextCustom>
               </Grid.Col>
               <Grid.Col span={6} style={{ alignItems: "flex-end" }}>
-                <TextCustom>Rp. 1.000</TextCustom>
+                <TextCustom> Rp. {formatCurrencyDisplay(total)}</TextCustom>
               </Grid.Col>
             </Grid>
           </StackCustom>

app/(application)/(user)/investment/[id]/index.tsx

@@ -1,3 +1,4 @@
+/* eslint-disable react-hooks/exhaustive-deps */
 import {
   BackButton,
   DotButton,

lib/dummy-data/investment/dummy-data-not-publish.ts

@@ -40,7 +40,7 @@ const listDataPublishInvesment = ({ data }: { data: any }) => [
   },
   {
     label: "Target Dana",
-    value: data?.targetDana,
+    value: `Rp. ${formatCurrencyDisplay(data?.targetDana) || "-"}`,
   },
   {
     label: "Harga Per Lembar",

screens/Invesment/BoxDetailDataSection.tsx

@@ -1,12 +1,11 @@
 import {
   AvatarUsernameAndOtherComponent,
-  BaseBox,
   BoxWithHeaderSection,
   DummyLandscapeImage,
   Grid,
   Spacing,
   StackCustom,
-  TextCustom,
+  TextCustom
 } from "@/components";
 import { View } from "react-native";