From 82e03978b89938219958032efb1448cc76baa181 Mon Sep 17 00:00:00 2001
From: Saumit <justsaumit@protonmail.com>
Date: Sat, 27 Sep 2025 02:14:26 +0530
Subject: Initial snapshot - OpenTelemetry demo 2.1.3 -f

---
 src/react-native-app/app/(tabs)/_layout.tsx  |  62 ++++++++++++
 src/react-native-app/app/(tabs)/cart.tsx     | 145 +++++++++++++++++++++++++++
 src/react-native-app/app/(tabs)/index.tsx    |  39 +++++++
 src/react-native-app/app/(tabs)/settings.tsx |  40 ++++++++
 src/react-native-app/app/_layout.tsx         |  59 +++++++++++
 5 files changed, 345 insertions(+)
 create mode 100644 src/react-native-app/app/(tabs)/_layout.tsx
 create mode 100644 src/react-native-app/app/(tabs)/cart.tsx
 create mode 100644 src/react-native-app/app/(tabs)/index.tsx
 create mode 100644 src/react-native-app/app/(tabs)/settings.tsx
 create mode 100644 src/react-native-app/app/_layout.tsx

(limited to 'src/react-native-app/app')

diff --git a/src/react-native-app/app/(tabs)/_layout.tsx b/src/react-native-app/app/(tabs)/_layout.tsx
new file mode 100644
index 0000000..ba2a7b0
--- /dev/null
+++ b/src/react-native-app/app/(tabs)/_layout.tsx
@@ -0,0 +1,62 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+import { Tabs } from "expo-router";
+import React from "react";
+import { TabBarIcon } from "@/components/navigation/TabBarIcon";
+import { useCart } from "@/providers/Cart.provider";
+
+export default function TabLayout() {
+  const {
+    cart: { items },
+  } = useCart();
+
+  let itemsInCart = 0;
+  items.forEach((item) => {
+    itemsInCart += item.quantity;
+  });
+
+  return (
+    <Tabs>
+      <Tabs.Screen
+        name="index"
+        options={{
+          title: "Products",
+          tabBarShowLabel: false,
+          tabBarIcon: ({ color, focused }) => (
+            <TabBarIcon
+              name={focused ? "list" : "list-outline"}
+              color={color}
+            />
+          ),
+        }}
+      />
+      <Tabs.Screen
+        name="cart"
+        options={{
+          title: "Cart",
+          tabBarShowLabel: false,
+          tabBarBadge: itemsInCart || undefined,
+          tabBarIcon: ({ color, focused }) => (
+            <TabBarIcon
+              name={focused ? "cart" : "cart-outline"}
+              color={color}
+            />
+          ),
+        }}
+      />
+      <Tabs.Screen
+        name="settings"
+        options={{
+          title: "Settings",
+          tabBarShowLabel: false,
+          tabBarIcon: ({ color, focused }) => (
+            <TabBarIcon
+              name={focused ? "settings" : "settings-outline"}
+              color={color}
+            />
+          ),
+        }}
+      />
+    </Tabs>
+  );
+}
diff --git a/src/react-native-app/app/(tabs)/cart.tsx b/src/react-native-app/app/(tabs)/cart.tsx
new file mode 100644
index 0000000..c91f847
--- /dev/null
+++ b/src/react-native-app/app/(tabs)/cart.tsx
@@ -0,0 +1,145 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+/**
+ * Copied with modification from src/frontend/components/Cart/CartDetail.tsx
+ */
+import { router } from "expo-router";
+import { ThemedView } from "@/components/ThemedView";
+import { ThemedText } from "@/components/ThemedText";
+import { Pressable, StyleSheet } from "react-native";
+import { useCart } from "@/providers/Cart.provider";
+import CheckoutForm from "@/components/CheckoutForm";
+import EmptyCart from "@/components/EmptyCart";
+import { ThemedScrollView } from "@/components/ThemedScrollView";
+import { useCallback, useMemo } from "react";
+import { IFormData } from "@/components/CheckoutForm/CheckoutForm";
+import Toast from "react-native-toast-message";
+import SessionGateway from "@/gateways/Session.gateway";
+import { useThemeColor } from "@/hooks/useThemeColor";
+
+export default function Cart() {
+  const tint = useThemeColor({}, "tint");
+  const styles = useMemo(() => getStyles(tint), [tint]);
+  const {
+    cart: { items },
+    emptyCart,
+    placeOrder,
+  } = useCart();
+
+  const onEmptyCart = useCallback(() => {
+    emptyCart();
+    Toast.show({
+      type: "success",
+      position: "bottom",
+      text1: "Your cart was emptied",
+    });
+  }, [emptyCart]);
+
+  const onPlaceOrder = useCallback(
+    async ({
+      email,
+      state,
+      streetAddress,
+      country,
+      city,
+      zipCode,
+      creditCardCvv,
+      creditCardExpirationMonth,
+      creditCardExpirationYear,
+      creditCardNumber,
+    }: IFormData) => {
+      const { userId } = await SessionGateway.getSession();
+      await placeOrder({
+        userId,
+        email,
+        address: {
+          streetAddress,
+          state,
+          country,
+          city,
+          zipCode,
+        },
+        // TODO simplify react native demo for now by hard-coding the selected currency
+        userCurrency: "USD",
+        creditCard: {
+          creditCardCvv,
+          creditCardExpirationMonth,
+          creditCardExpirationYear,
+          creditCardNumber,
+        },
+      });
+
+      Toast.show({
+        type: "success",
+        position: "bottom",
+        text1: "Your order is Complete!",
+        text2: "We've sent you a confirmation email.",
+      });
+
+      router.replace("/");
+    },
+    [placeOrder],
+  );
+
+  if (!items.length) {
+    return <EmptyCart />;
+  }
+
+  return (
+    <ThemedView style={styles.container}>
+      <ThemedView>
+        <ThemedScrollView>
+          {items.map((item) => (
+            <ThemedView key={item.productId} style={styles.cartItem}>
+              <ThemedText>{item.product.name}</ThemedText>
+              <ThemedText style={styles.bold}>{item.quantity}</ThemedText>
+            </ThemedView>
+          ))}
+        </ThemedScrollView>
+      </ThemedView>
+      <ThemedView style={styles.emptyCartContainer}>
+        <Pressable style={styles.emptyCart} onPress={onEmptyCart}>
+          <ThemedText style={styles.emptyCartText}>Empty Cart</ThemedText>
+        </Pressable>
+      </ThemedView>
+      <CheckoutForm onSubmit={onPlaceOrder} />
+    </ThemedView>
+  );
+}
+
+const getStyles = (tint: string) =>
+  StyleSheet.create({
+    container: {
+      flex: 1,
+      gap: 20,
+      justifyContent: "flex-start",
+    },
+    emptyCartContainer: {
+      display: "flex",
+      alignItems: "flex-end",
+    },
+    emptyCart: {
+      borderRadius: 4,
+      backgroundColor: "green",
+      alignItems: "center",
+      width: 100,
+      right: 20,
+      position: "relative",
+    },
+    emptyCartText: {
+      color: "white",
+    },
+    cartItem: {
+      marginLeft: 20,
+      marginRight: 20,
+      display: "flex",
+      flexDirection: "row",
+      justifyContent: "space-between",
+      borderStyle: "solid",
+      borderBottomWidth: 1,
+      borderColor: tint,
+    },
+    bold: {
+      fontWeight: "bold",
+    },
+  });
diff --git a/src/react-native-app/app/(tabs)/index.tsx b/src/react-native-app/app/(tabs)/index.tsx
new file mode 100644
index 0000000..c01e1ea
--- /dev/null
+++ b/src/react-native-app/app/(tabs)/index.tsx
@@ -0,0 +1,39 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+import { ThemedView } from "@/components/ThemedView";
+import ProductList from "@/components/ProductList";
+import { useQuery } from "@tanstack/react-query";
+import { ScrollView, StyleSheet } from "react-native";
+import { ThemedText } from "@/components/ThemedText";
+import ApiGateway from "@/gateways/Api.gateway";
+
+export default function Index() {
+  const { data: productList = [] } = useQuery({
+    // TODO simplify react native demo for now by hard-coding the selected currency
+    queryKey: ["products", "USD"],
+    queryFn: () => ApiGateway.listProducts("USD"),
+  });
+
+  return (
+    <ThemedView style={styles.container}>
+      <ScrollView>
+        {productList.length ? (
+          <ProductList productList={productList} />
+        ) : (
+          <ThemedText>
+            No products found, make sure the backend services for the
+            OpenTelemetry demo are running
+          </ThemedText>
+        )}
+      </ScrollView>
+    </ThemedView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    justifyContent: "center",
+    alignItems: "center",
+  },
+});
diff --git a/src/react-native-app/app/(tabs)/settings.tsx b/src/react-native-app/app/(tabs)/settings.tsx
new file mode 100644
index 0000000..d278918
--- /dev/null
+++ b/src/react-native-app/app/(tabs)/settings.tsx
@@ -0,0 +1,40 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+import { useQueryClient } from '@tanstack/react-query'
+import { ThemedView } from "@/components/ThemedView";
+import { StyleSheet } from "react-native";
+import { getFrontendProxyURL, setFrontendProxyURL } from "@/utils/Settings";
+import { setupTracerProvider } from "@/hooks/useTracer";
+import { trace } from "@opentelemetry/api";
+import { Setting } from "@/components/Setting";
+
+export default function Settings() {
+  const queryClient = useQueryClient()
+
+  const onSetFrontendProxyURL = async (value: string) => {
+    await setFrontendProxyURL(value);
+
+    // Clear any cached queries since we now have a new endpoint to hit for everything
+    await queryClient.invalidateQueries();
+
+    // Need to setup a new tracer provider since the export URL for traces has now changed
+    trace.disable();
+    const provider = setupTracerProvider(value);
+    trace.setGlobalTracerProvider(provider);
+  };
+
+  return (
+    <ThemedView style={styles.container}>
+      <Setting name="Frontend Proxy URL" get={getFrontendProxyURL} set={onSetFrontendProxyURL} />
+    </ThemedView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    display: "flex",
+    gap: 20,
+    paddingLeft: 20,
+    height: "100%",
+  },
+});
diff --git a/src/react-native-app/app/_layout.tsx b/src/react-native-app/app/_layout.tsx
new file mode 100644
index 0000000..d8ac89c
--- /dev/null
+++ b/src/react-native-app/app/_layout.tsx
@@ -0,0 +1,59 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+import { SplashScreen, Stack } from "expo-router";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import {
+  DarkTheme,
+  DefaultTheme,
+  ThemeProvider,
+} from "@react-navigation/native";
+import { useColorScheme } from "react-native";
+import { RootSiblingParent } from "react-native-root-siblings";
+import Toast from "react-native-toast-message";
+import { useFonts } from "expo-font";
+import { useEffect, useMemo } from "react";
+import { useTracer } from "@/hooks/useTracer";
+import CartProvider from "@/providers/Cart.provider";
+
+const queryClient = new QueryClient();
+
+export default function RootLayout() {
+  const colorScheme = useColorScheme();
+  const [fontsLoaded] = useFonts({
+    SpaceMono: require("../assets/fonts/SpaceMono-Regular.ttf"),
+  });
+  const { loaded: tracerLoaded } = useTracer();
+
+  const loaded = useMemo<boolean>(
+    () => fontsLoaded && tracerLoaded,
+    [fontsLoaded, tracerLoaded],
+  );
+  useEffect(() => {
+    if (loaded) {
+      SplashScreen.hideAsync();
+    }
+  }, [loaded]);
+
+  if (!loaded) {
+    return null;
+  }
+
+  return (
+    <ThemeProvider value={colorScheme === "dark" ? DarkTheme : DefaultTheme}>
+      <RootSiblingParent>
+        <QueryClientProvider client={queryClient}>
+          <CartProvider>
+            {/*
+              TODO Once https://github.com/open-telemetry/opentelemetry-js-contrib/pull/2359 is available it can
+              be used here to provide telemetry for navigation between tabs
+              */}
+            <Stack>
+              <Stack.Screen name="(tabs)" options={{ headerShown: false }} />
+            </Stack>
+          </CartProvider>
+        </QueryClientProvider>
+      </RootSiblingParent>
+      <Toast />
+    </ThemeProvider>
+  );
+}
-- 
cgit v1.2.3