Primer commit de mi proyecto React

src/App.css

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+/* Estilos generales */
+body {
+  font-family: sans-serif;
+  transition: background-color 0.3s ease; /* Transición para el cambio de tema */
+}
+
+.container {
+  margin-top: 50px;
+  display: flex;
+  flex-direction: column;
+  align-items: center; /* Centrar horizontalmente */
+}
+
+h1 {
+  color: #343a40; /* Color de texto oscuro */
+  margin-bottom: 30px;
+}
+
+/* Estilos para los selectores */
+label {
+  font-weight: bold;
+  margin-bottom: 5px;
+}
+
+select {
+  width: 100%;
+  padding: 8px;
+  margin-bottom: 15px;
+  border: 1px solid #ced4da;
+  border-radius: 4px;
+  box-sizing: border-box;
+}
+
+/* Estilos para los radio buttons */
+.form-check-input {
+  margin-right: 5px;
+}
+
+.form-check-label {
+  margin-right: 15px;
+}
+
+/* Estilos para el botón */
+button {
+  background-color: #007bff; /* Color de fondo azul */
+  color: white;
+  padding: 10px 20px;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+}
+
+button:hover {
+  background-color: #0069d9; /* Color de fondo azul más oscuro al pasar el mouse */
+}
+
+/* Estilos para el tema claro */
+body.light-theme {
+  background-color: #f8f9fa; /* Color de fondo claro */
+  color: #343a40; /* Color de texto oscuro */
+}
+
+/* Estilos para el tema oscuro */
+body.dark-theme {
+  background-color: #343a40; /* Color de fondo oscuro */
+  color: #f8f9fa; /* Color de texto claro */
+}

src/App.js

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+import React, { useState, useEffect, useRef } from 'react';
+import './App.css';
+import 'bootstrap/dist/css/bootstrap.min.css';
+
+function App() {
+    const [lineaSeleccionada, setLineaSeleccionada] = useState('');
+    const [paradaSeleccionada, setParadaSeleccionada] = useState('');
+    const [tipoParada, setTipoParada] = useState('actual');
+    const [audio, setAudio] = useState(null);
+    const [volume, setVolume] = useState(1);
+    const audioRef = useRef(null);
+    const [theme, setTheme] = useState('light');
+
+    const datos = {
+        "Línea 1": [
+            "Zafra",
+            "Julio Caro Baroja (Aqualon)",
+            "Avda. Alemania (Esquina Ruiz de Alda)",
+            "Avda. Alemania (Plaza de Toros)",
+            "Bda. Navidad",
+            "Don Bosco",
+            "Plaza de los Dolores",
+            "Barriada del Carmen",
+            "Humilladero",
+            "Cardeñas",
+            "Orden Baja",
+            "Gonzalo de Berceo",
+            "Plaza Niño Miguel",
+            "Magnolia",
+            "Hospital JRJ",
+            "Plaza las Amapolas",
+            "Av. Andalucia (Castaño Robledo)",
+            "Monumento al Fútbol",
+            "Relaciones Laborales (Universidad)",
+            "Vista Alegre-Universidad",
+            "Centro Comercial Holea",
+            "Cruce Romeralejo",
+            "Universidad. Avenida de las Artes",
+            "Palacio de Deportes",
+            "Higueral (Fuerzas Armadas)",
+            "Bda. José Antonio",
+            "Isla Chica",
+            "Las Delicias",
+            "El Árbol",
+            "Gasolinera",
+            "Estación de Ferrocarril",
+            "El punto",
+            "Estación de Sevilla",
+            "Nuevo Mercado"
+        ],
+        "Línea 5000": ["Puente de Vallecas"]
+    };
+
+    const handleLineaChange = (event) => {
+        setLineaSeleccionada(event.target.value);
+        setParadaSeleccionada('');
+    };
+
+    const handleParadaChange = (event) => {
+        setParadaSeleccionada(event.target.value);
+    };
+
+    const handleTipoParadaChange = (event) => {
+        setTipoParada(event.target.value);
+    };
+
+    const handleVolumeChange = (event) => {
+        setVolume(event.target.value);
+        if (audioRef.current) {
+            audioRef.current.volume = event.target.value;
+        }
+    };
+
+    const reproducirAudio = () => {
+        if (audio) {
+            audio.pause();
+        }
+
+        const playAudio = (audioFile) => {
+            const nuevoAudio = new Audio(audioFile);
+            nuevoAudio.play().catch(error => {
+                console.error("Error al reproducir audio:", error);
+            });
+            return nuevoAudio;
+        };
+
+        // Play "parada_actual" or "parada_siguiente" FIRST
+        const paradaTipoAudio = playAudio(`/audio/parada_${tipoParada}.wav`);
+        setAudio(paradaTipoAudio); // Update state immediately
+        audioRef.current = paradaTipoAudio; // Set audio ref
+        paradaTipoAudio.volume = volume; // Set volume
+
+        // Then, if a specific stop is selected, play that audio AFTER
+        if (datos[lineaSeleccionada] && datos[lineaSeleccionada].includes(paradaSeleccionada)) {
+            paradaTipoAudio.onended = () => {  // Play stop audio after type audio
+                let paradaAudioFile = "";
+                paradaAudioFile = `/audio/${paradaSeleccionada.toLowerCase().replace(/ /g, "_")}.wav`; // Dynamic file naming
+                const paradaAudio = playAudio(paradaAudioFile);
+                setAudio(paradaAudio); // Update state again
+                audioRef.current = paradaAudio; // Set audio ref
+                paradaAudio.volume = volume; // Set volume
+            };
+        }
+    };
+
+    useEffect(() => {
+        const cargarAudios = () => {
+            // Preload audio files (optional but recommended)
+            const audioActual = new Audio(`/audio/parada_actual.wav`);
+            const audioSiguiente = new Audio(`/audio/parada_siguiente.wav`);
+
+            // Dynamically preload audio files for each stop
+            datos["Línea 1"].forEach(parada => {
+                const audio = new Audio(`/audio/${parada.toLowerCase().replace(/ /g, "_")}.wav`);
+            });
+
+            const audioVallecas = new Audio(`/audio/vallecas.wav`); // Preload new audio file
+        };
+
+        cargarAudios();
+    }, []);
+
+    useEffect(() => {
+        localStorage.setItem('theme', theme);
+        document.body.classList.toggle('dark-theme', theme === 'dark');
+        document.body.classList.toggle('light-theme', theme === 'light');
+    }, [theme]);
+
+    const toggleTheme = () => {
+        setTheme(theme === 'light' ? 'dark' : 'light');
+    };
+
+    return (
+        <div className="container">
+            <h1>Aplicación de Megafonía</h1>
+
+            <div>
+                <label htmlFor="linea">Línea:</label>
+                <select id="linea" value={lineaSeleccionada} onChange={handleLineaChange} className="form-select">
+                    <option value="">Selecciona una línea</option>
+                    {Object.keys(datos).map((linea) => (
+                        <option key={linea} value={linea}>{linea}</option>
+                    ))}
+                </select>
+            </div>
+
+            <div>
+                <label htmlFor="parada">Parada:</label>
+                <select id="parada" value={paradaSeleccionada} onChange={handleParadaChange} className="form-select">
+                    <option value="">Selecciona una parada</option>
+                    {datos[lineaSeleccionada]?.map((parada) => (
+                        <option key={parada} value={parada}>{parada}</option>
+                    ))}
+                </select>
+            </div>
+
+            <div className="d-flex flex-column">
+                <label>
+                    <input
+                        type="radio"
+                        value="actual"
+                        checked={tipoParada === 'actual'}
+                        onChange={handleTipoParadaChange}
+                        className="form-check-input"
+                    />
+                    <span className="form-check-label">Parada actual</span>
+                </label>
+                <label>
+                    <input
+                        type="radio"
+                        value="siguiente"
+                        checked={tipoParada === 'siguiente'}
+                        onChange={handleTipoParadaChange}
+                        className="form-check-input"
+                    />
+                    <span className="form-check-label">Parada siguiente</span>
+                </label>
+            </div>
+
+            <div>
+                <label htmlFor="volume">Volumen:</label>
+                <input
+                    type="range"
+                    id="volume"
+                    min="0"
+                    max="1"
+                    step="0.1"
+                    value={volume}
+                    onChange={handleVolumeChange}
+                    className="form-range"
+                />
+            </div>
+
+            <button onClick={reproducirAudio} className="btn btn-primary">Reproducir</button>
+            <button onClick={toggleTheme} className="btn btn-secondary mt-3">
+                Cambiar tema a {theme === 'light' ? 'oscuro' : 'claro'}
+            </button>
+        </div>
+    );
+}
+
+export default App;

src/App.test.js

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+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

src/index.css

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+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+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
+reportWebVitals();

src/logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

src/reportWebVitals.js

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+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

src/setupTests.js

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+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';