React Migration

Ramez-Ibrahim · Jul 1, 2024 · ff3a130 · ff3a130
1 parent 211b862
commit ff3a130
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diff --git a/public/favicon.ico b/public/favicon.ico
diff --git a/public/index.html b/public/index.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>
diff --git a/public/logo192.png b/public/logo192.png
diff --git a/public/logo512.png b/public/logo512.png
diff --git a/public/manifest.json b/public/manifest.json
@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
diff --git a/public/robots.txt b/public/robots.txt
@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:
diff --git a/src/App.js b/src/App.js
@@ -0,0 +1,56 @@
+import React, { useRef, useEffect } from 'react';
+import useCalculator from './Calculator';
+import './styles.css'; // Ensure this path is correct based on your file structure
+
+function App() {
+  const {
+    current,
+    previous,
+    clear,
+    deleteLast,
+    appendNumber,
+    chooseOperation,
+    compute,
+  } = useCalculator();
+
+  const previousOperandRef = useRef(null);
+  const currentOperandRef = useRef(null);
+
+  useEffect(() => {
+    if (previousOperandRef.current) {
+      previousOperandRef.current.innerText = previous;
+    }
+    if (currentOperandRef.current) {
+      currentOperandRef.current.innerText = current;
+    }
+  }, [current, previous]);
+
+  return (
+    <div className="calculator-grid">
+      <div className="output">
+        <div data-previous-operand ref={previousOperandRef} className="previous-operand"></div>
+        <div data-current-operand ref={currentOperandRef} className="current-operand"></div>
+      </div>
+      <button className="span-two" onClick={clear}>AC</button>
+      <button onClick={deleteLast}>DEL</button>
+      <button onClick={() => chooseOperation("÷")}>÷</button>
+      <button onClick={() => appendNumber("1")}>1</button>
+      <button onClick={() => appendNumber("2")}>2</button>
+      <button onClick={() => appendNumber("3")}>3</button>
+      <button onClick={() => chooseOperation("*")}>*</button>
+      <button onClick={() => appendNumber("4")}>4</button>
+      <button onClick={() => appendNumber("5")}>5</button>
+      <button onClick={() => appendNumber("6")}>6</button>
+      <button onClick={() => chooseOperation("+")}>+</button>
+      <button onClick={() => appendNumber("7")}>7</button>
+      <button onClick={() => appendNumber("8")}>8</button>
+      <button onClick={() => appendNumber("9")}>9</button>
+      <button onClick={() => chooseOperation("-")}>-</button>
+      <button onClick={() => appendNumber(".")}>.</button>
+      <button onClick={() => appendNumber("0")}>0</button>
+      <button className="span-two" onClick={compute}>=</button>
+    </div>
+  );
+}
+
+export default App;
diff --git a/src/Calculator.js b/src/Calculator.js
@@ -0,0 +1,96 @@
+// Calculator.js
+import { useState, useEffect } from 'react';
+
+const useCalculator = () => {
+  const [currentOperand, setCurrentOperand] = useState("");
+  const [previousOperand, setPreviousOperand] = useState("");
+  const [operation, setOperation] = useState(null);
+
+  const clear = () => {
+    setCurrentOperand("");
+    setPreviousOperand("");
+    setOperation(null);
+  };
+
+  const deleteLast = () => {
+    setCurrentOperand(currentOperand.toString().slice(0, -1));
+  };
+
+  const appendNumber = (number) => {
+    if (number === "." && currentOperand.includes(".")) return;
+    setCurrentOperand(currentOperand + number);
+  };
+
+  const chooseOperation = (op) => {
+    if (currentOperand === "") return;
+    if (previousOperand !== "") {
+      compute();
+    }
+    setOperation(op);
+    setPreviousOperand(currentOperand);
+    setCurrentOperand("");
+  };
+
+  const compute = () => {
+    const prev = parseFloat(previousOperand);
+    const current = parseFloat(currentOperand);
+    if (isNaN(prev) || isNaN(current)) return;
+    let computation;
+    switch (operation) {
+      case "+":
+        computation = prev + current;
+        break;
+      case "-":
+        computation = prev - current;
+        break;
+      case "*":
+        computation = prev * current;
+        break;
+      case "÷":
+        computation = prev / current;
+        break;
+      default:
+        return;
+    }
+    setCurrentOperand(computation.toString());
+    setOperation(null);
+    setPreviousOperand("");
+  };
+
+  const getDisplayNumber = (number) => {
+    const stringNumber = number.toString();
+    const integerDigits = parseFloat(stringNumber.split('.')[0]);
+    const decimalDigits = stringNumber.split('.')[1];
+    let integerDisplay;
+    if (isNaN(integerDigits)) {
+      integerDisplay = "";
+    } else {
+      integerDisplay = integerDigits.toLocaleString('en', { maximumFractionDigits: 0 });
+    }
+    if (decimalDigits != null) {
+      return `${integerDisplay}.${decimalDigits}`;
+    } else {
+      return integerDisplay;
+    }
+  };
+
+  const updateDisplay = () => {
+    const current = getDisplayNumber(currentOperand);
+    const previous = operation ? `${getDisplayNumber(previousOperand)} ${operation}` : "";
+    return { current, previous };
+  };
+
+  const { current, previous } = updateDisplay();
+
+  return {
+    current,
+    previous,
+    clear,
+    deleteLast,
+    appendNumber,
+    chooseOperation,
+    compute,
+  };
+};
+
+export default useCalculator;
diff --git a/src/index.js b/src/index.js
@@ -0,0 +1,14 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
diff --git a/src/styles.css b/src/styles.css
@@ -0,0 +1,63 @@
+/* Global styles */
+*, *::before, *::after {
+    box-sizing: border-box; /* Ensures consistent box sizing for all elements */
+    font-family: Gotham Rounded, sans-serif; /* Sets the font family for all elements */
+    font-weight: normal; /* Sets normal font weight for all elements */
+  }
+
+  /* Body styles */
+  body {
+    padding: 0;
+    margin: 0;
+    background: linear-gradient(to right, #00AAFF, #00FF6C); /* Sets a linear gradient background color */
+  }
+
+  /* Calculator grid styles */
+  .calculator-grid {
+    display: grid; /* Sets the display type to grid */
+    justify-content: center; /* Centers the grid horizontally */
+    align-content: center; /* Centers the grid vertically */
+    min-height: 100vh; /* Sets the minimum height of the grid to the full viewport height */
+    grid-template-columns: repeat(4, 85px); /* Sets the grid columns to repeat 4 times with a width of 85px each */
+    grid-template-rows: minmax(120px, auto) repeat(5, 85px); /* Sets the grid rows with a minimum height of 120px for the output and 85px for the buttons */
+  }
+
+  .calculator-grid > button {
+    cursor: pointer; /* Sets a pointer cursor for the buttons */
+    font-size: 2rem; /* Sets the font size for the buttons */
+    border: 1px solid white; /* Sets a white border for the buttons */
+    outline: none; /* Removes the outline on focus */
+    background-color: rgba(255, 255, 255, .75); /* Sets the background color for the buttons */
+  }
+
+  .calculator-grid > button:hover {
+    background-color: rgba(255, 255, 255, .9); /* Sets the background color for the buttons on hover */
+  }
+
+  .span-two {
+    grid-column: span 2; /* Spans the button across 2 grid columns */
+  }
+
+  /* Output styles */
+  .output {
+    grid-column: 1 / -1; /* Sets the output element to span across all grid columns */
+    background-color: rgba(0, 0, 0, .75); /* Sets the background color for the output element */
+    display: flex; /* Sets the display type to flex */
+    align-items: flex-end; /* Aligns the content at the bottom of the output element */
+    justify-content: space-around; /* Distributes the content evenly along the horizontal axis */
+    flex-direction: column; /* Sets the flex direction to column */
+    padding: 10px; /* Adds padding to the output element */
+    word-wrap: break-word; /* Allows long words to break and wrap to the next line */
+    word-break: break-all; /* Breaks words at any character to fit within the container */
+  }
+
+  .output .previous-operand {
+    color: rgba(255, 255, 255, .75); /* Sets the color for the previous operand */
+    font-size: 1.5rem; /* Sets the font size for the previous operand */
+  }
+
+  .output .current-operand {
+    color: white; /* Sets the color for the current operand */
+    font-size: 2.5rem; /* Sets the font size for the current operand */
+  }
+