From a2ca7db052c0ce20b404f6f81b691850b3318b97 Mon Sep 17 00:00:00 2001
From: MohamedBassem <me@mbassem.com>
Date: Wed, 13 Mar 2024 14:33:54 +0000
Subject: mobile: Optimistic UI updates on actions

---
 packages/mobile/components/ui/ActionButton.tsx |  21 +++
 packages/mobile/components/ui/Toast.tsx        | 183 +++++++++++++++++++++++++
 2 files changed, 204 insertions(+)
 create mode 100644 packages/mobile/components/ui/ActionButton.tsx
 create mode 100644 packages/mobile/components/ui/Toast.tsx

(limited to 'packages/mobile/components/ui')

diff --git a/packages/mobile/components/ui/ActionButton.tsx b/packages/mobile/components/ui/ActionButton.tsx
new file mode 100644
index 00000000..c51eb332
--- /dev/null
+++ b/packages/mobile/components/ui/ActionButton.tsx
@@ -0,0 +1,21 @@
+import { ActivityIndicator, Pressable, PressableProps } from "react-native";
+
+export function ActionButton({
+  children,
+  loading,
+  disabled,
+  ...props
+}: PressableProps & {
+  loading: boolean;
+}) {
+  if (disabled !== undefined) {
+    disabled ||= loading;
+  } else if (loading) {
+    disabled = true;
+  }
+  return (
+    <Pressable {...props} disabled={disabled}>
+      {loading ? <ActivityIndicator /> : children}
+    </Pressable>
+  );
+}
diff --git a/packages/mobile/components/ui/Toast.tsx b/packages/mobile/components/ui/Toast.tsx
new file mode 100644
index 00000000..fb319f84
--- /dev/null
+++ b/packages/mobile/components/ui/Toast.tsx
@@ -0,0 +1,183 @@
+import { createContext, useContext, useEffect, useRef, useState } from "react";
+import { Animated, Text, View } from "react-native";
+
+import { cn } from "@/lib/utils";
+
+const toastVariants = {
+  default: "bg-foreground",
+  destructive: "bg-destructive",
+  success: "bg-green-500",
+  info: "bg-blue-500",
+};
+
+interface ToastProps {
+  id: number;
+  message: string;
+  onHide: (id: number) => void;
+  variant?: keyof typeof toastVariants;
+  duration?: number;
+  showProgress?: boolean;
+}
+function Toast({
+  id,
+  message,
+  onHide,
+  variant = "default",
+  duration = 3000,
+  showProgress = true,
+}: ToastProps) {
+  const opacity = useRef(new Animated.Value(0)).current;
+  const progress = useRef(new Animated.Value(0)).current;
+
+  useEffect(() => {
+    Animated.sequence([
+      Animated.timing(opacity, {
+        toValue: 1,
+        duration: 500,
+        useNativeDriver: true,
+      }),
+      Animated.timing(progress, {
+        toValue: 1,
+        duration: duration - 1000,
+        useNativeDriver: false,
+      }),
+      Animated.timing(opacity, {
+        toValue: 0,
+        duration: 500,
+        useNativeDriver: true,
+      }),
+    ]).start(() => onHide(id));
+  }, [duration]);
+
+  return (
+    <Animated.View
+      className={`
+        ${toastVariants[variant]}
+        m-2 mb-1 transform rounded-lg p-4 shadow-md transition-all
+      `}
+      style={{
+        opacity,
+        transform: [
+          {
+            translateY: opacity.interpolate({
+              inputRange: [0, 1],
+              outputRange: [-20, 0],
+            }),
+          },
+        ],
+      }}
+    >
+      <Text className="text-background text-left font-semibold">{message}</Text>
+      {showProgress && (
+        <View className="mt-2 rounded">
+          <Animated.View
+            className="h-2 rounded bg-white opacity-30 dark:bg-black"
+            style={{
+              width: progress.interpolate({
+                inputRange: [0, 1],
+                outputRange: ["0%", "100%"],
+              }),
+            }}
+          />
+        </View>
+      )}
+    </Animated.View>
+  );
+}
+
+type ToastVariant = keyof typeof toastVariants;
+
+interface ToastMessage {
+  id: number;
+  text: string;
+  variant: ToastVariant;
+  duration?: number;
+  position?: string;
+  showProgress?: boolean;
+}
+interface ToastContextProps {
+  toast: (t: {
+    message: string;
+    variant?: keyof typeof toastVariants;
+    duration?: number;
+    position?: "top" | "bottom";
+    showProgress?: boolean;
+  }) => void;
+  removeToast: (id: number) => void;
+}
+const ToastContext = createContext<ToastContextProps | undefined>(undefined);
+
+// TODO: refactor to pass position to Toast instead of ToastProvider
+function ToastProvider({
+  children,
+  position = "top",
+}: {
+  children: React.ReactNode;
+  position?: "top" | "bottom";
+}) {
+  const [messages, setMessages] = useState<ToastMessage[]>([]);
+
+  const toast: ToastContextProps["toast"] = ({
+    message,
+    variant = "default",
+    duration = 3000,
+    position = "top",
+    showProgress = true,
+  }: {
+    message: string;
+    variant?: ToastVariant;
+    duration?: number;
+    position?: "top" | "bottom";
+    showProgress?: boolean;
+  }) => {
+    setMessages((prev) => [
+      ...prev,
+      {
+        id: Date.now(),
+        text: message,
+        variant,
+        duration,
+        position,
+        showProgress,
+      },
+    ]);
+  };
+
+  const removeToast = (id: number) => {
+    setMessages((prev) => prev.filter((message) => message.id !== id));
+  };
+
+  return (
+    <ToastContext.Provider value={{ toast, removeToast }}>
+      {children}
+      <View
+        className={cn("absolute left-0 right-0", {
+          "top-[45px]": position === "top",
+          "bottom-0": position === "bottom",
+        })}
+      >
+        {messages.map((message) => (
+          <Toast
+            key={message.id}
+            id={message.id}
+            message={message.text}
+            variant={message.variant}
+            duration={message.duration}
+            showProgress={message.showProgress}
+            onHide={removeToast}
+          />
+        ))}
+      </View>
+    </ToastContext.Provider>
+  );
+}
+
+function useToast() {
+  const context = useContext(ToastContext);
+  if (!context) {
+    throw new Error("useToast must be used within ToastProvider");
+  }
+  return context;
+}
+
+export { ToastProvider, ToastVariant, Toast, toastVariants, useToast };
-- 
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