/**
 * Example Usage: Complete examples of the new architecture
 *
 * This file demonstrates how to use the separated data/visualization architecture:
 * - TimeSeriesPlot: Pure visualization
 * - DataSource: Data generation/provision
 * - Connections: Links between them
 */

import { Application } from 'pixi.js';
import { TimeSeriesPlot } from './timeseries-plot.js';
import {
    SyntheticDataSource,
    FunctionDataSource,
    StreamingDataSource,
    WebSocketDataSource,
} from './data-sources.js';
import {
    DirectConnection,
    BufferedConnection,
    ConnectionManager,
    connectSyntheticData,
    connectFunction,
    createConnectedPlot,
} from './plot-connections.js';
import {
    TestDataFactory,
    SineWaveGenerator,
    PerlinNoiseGenerator,
    ChirpGenerator,
} from './test-data-generators.js';

// ============================================================================
// Example 1: Simple Setup - One plot, one data source
// ============================================================================

export async function example1_SimpleSetup() {
    console.log('=== Example 1: Simple Setup ===');

    // Create PixiJS app
    const app = new Application();
    await app.init({
        width: 800,
        height: 600,
        backgroundColor: 0x1a1a26,
    });
    document.body.appendChild(app.canvas);

    // Create plot (visualization only)
    const plot = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: 800,
        height: 600,
        title: 'Simple Sine Wave',
        showGrid: true,
    });
    app.stage.addChild(plot.container);

    // Create data source
    const generator = TestDataFactory.createSimpleSine(30);
    const source = new SyntheticDataSource({
        generator: generator,
        pointsPerLine: 100,
        width: 800,
        lineInterval: 100, // New line every 100ms
    });

    // Connect source to plot
    const connection = new DirectConnection(source, plot);
    connection.connect();

    // Update plot every frame
    app.ticker.add(() => {
        plot.update();
    });

    return { app, plot, source, connection };
}

// ============================================================================
// Example 2: Quick Setup Using Helper Functions
// ============================================================================

export async function example2_QuickSetup() {
    console.log('=== Example 2: Quick Setup ===');

    const app = new Application();
    await app.init({
        width: 800,
        height: 600,
        backgroundColor: 0x1a1a26,
    });
    document.body.appendChild(app.canvas);

    // One-liner setup!
    const { plot, source, connection } = createConnectedPlot(
        app,
        {
            x: 0,
            y: 0,
            width: 800,
            height: 600,
            title: 'Quick Setup',
        },
        {
            generator: TestDataFactory.createComplexPattern(30),
            lineInterval: 100,
        }
    );

    app.ticker.add(() => plot.update());

    return { app, plot, source, connection };
}

// ============================================================================
// Example 3: Multiple Plots with Different Data Sources
// ============================================================================

export async function example3_MultiplePlots() {
    console.log('=== Example 3: Multiple Plots ===');

    const app = new Application();
    await app.init({
        width: 1600,
        height: 600,
        backgroundColor: 0x1a1a26,
    });
    document.body.appendChild(app.canvas);

    const width = 800;
    const height = 600;

    // Left plot: Sine wave
    const plot1 = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: width,
        height: height,
        title: 'Sine Wave',
        color: 0xff6666,
    });

    // Right plot: Perlin noise
    const plot2 = new TimeSeriesPlot({
        x: width,
        y: 0,
        width: width,
        height: height,
        title: 'Perlin Noise',
        color: 0x66ff66,
    });

    app.stage.addChild(plot1.container);
    app.stage.addChild(plot2.container);

    // Connect different data sources
    const conn1 = connectSyntheticData(
        TestDataFactory.createSimpleSine(30),
        plot1,
        { lineInterval: 100 }
    );

    const conn2 = connectSyntheticData(
        TestDataFactory.createSmoothNoise(30),
        plot2,
        { lineInterval: 100 }
    );

    app.ticker.add(() => {
        plot1.update();
        plot2.update();
    });

    return { app, plots: [plot1, plot2], connections: [conn1, conn2] };
}

// ============================================================================
// Example 4: Using Function-Based Data Source
// ============================================================================

export async function example4_FunctionSource() {
    console.log('=== Example 4: Function Source ===');

    const app = new Application();
    await app.init({ width: 800, height: 600, backgroundColor: 0x1a1a26 });
    document.body.appendChild(app.canvas);

    const plot = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: 800,
        height: 600,
        title: 'Custom Function',
    });
    app.stage.addChild(plot.container);

    // Define a custom function: (x, t) => y
    // x is normalized 0-1 across the width
    // t is time in seconds
    const customFunc = (x, t) => {
        // Create an interference pattern
        const wave1 = Math.sin(x * 10 + t * 2);
        const wave2 = Math.sin(x * 15 - t * 3);
        const wave3 = Math.cos(x * 8 + t * 1.5);
        return (wave1 + wave2 + wave3) / 3;
    };

    const connection = connectFunction(customFunc, plot, {
        lineInterval: 100,
        amplitude: 30,
    });

    app.ticker.add(() => plot.update());

    return { app, plot, connection };
}

// ============================================================================
// Example 5: Swapping Data Sources at Runtime
// ============================================================================

export async function example5_SwappingSources() {
    console.log('=== Example 5: Swapping Sources ===');

    const app = new Application();
    await app.init({ width: 800, height: 600, backgroundColor: 0x1a1a26 });
    document.body.appendChild(app.canvas);

    const plot = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: 800,
        height: 600,
        title: 'Dynamic Source Switching',
    });
    app.stage.addChild(plot.container);

    // Start with sine wave
    let currentConnection = connectSyntheticData(
        TestDataFactory.createSimpleSine(30),
        plot,
        { lineInterval: 100 }
    );

    app.ticker.add(() => plot.update());

    // Function to switch to a different data source
    const switchToSource = (generator, title) => {
        // Disconnect current source
        currentConnection.disconnect();

        // Connect new source
        currentConnection = connectSyntheticData(generator, plot, {
            lineInterval: 100,
        });

        plot.setTitle(title);
        console.log(`Switched to: ${title}`);
    };

    // Example: Switch sources every 5 seconds
    let sourceIndex = 0;
    const sources = [
        { gen: TestDataFactory.createSimpleSine(30), title: 'Sine Wave' },
        { gen: TestDataFactory.createComplexPattern(30), title: 'Complex Pattern' },
        { gen: TestDataFactory.createSmoothNoise(30), title: 'Perlin Noise' },
        { gen: TestDataFactory.createFrequencySweep(30), title: 'Frequency Sweep' },
    ];

    setInterval(() => {
        sourceIndex = (sourceIndex + 1) % sources.length;
        const source = sources[sourceIndex];
        switchToSource(source.gen, source.title);
    }, 5000);

    return { app, plot, switchToSource };
}

// ============================================================================
// Example 6: Streaming Data with Buffering
// ============================================================================

export async function example6_StreamingData() {
    console.log('=== Example 6: Streaming Data ===');

    const app = new Application();
    await app.init({ width: 800, height: 600, backgroundColor: 0x1a1a26 });
    document.body.appendChild(app.canvas);

    const plot = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: 800,
        height: 600,
        title: 'Streaming Data (Buffered)',
    });
    app.stage.addChild(plot.container);

    // Create streaming source (emits individual points)
    const generator = new SineWaveGenerator({
        frequency: 2.0,
        amplitude: 1.0,
        sampleRate: 60,
    });

    const source = new StreamingDataSource({
        generator: generator,
        sampleRate: 60, // 60 points per second
    });

    // Use buffered connection to assemble points into lines
    const connection = new BufferedConnection(source, plot, {
        bufferSize: 100, // Buffer 100 points before creating a line
        bufferTimeout: 1000, // Or timeout after 1 second
    });
    connection.connect();

    app.ticker.add(() => plot.update());

    return { app, plot, source, connection };
}

// ============================================================================
// Example 7: Connection Manager (Managing Multiple Connections)
// ============================================================================

export async function example7_ConnectionManager() {
    console.log('=== Example 7: Connection Manager ===');

    const app = new Application();
    await app.init({ width: 800, height: 600, backgroundColor: 0x1a1a26 });
    document.body.appendChild(app.canvas);

    const plot = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: 800,
        height: 600,
        title: 'Managed Connections',
    });
    app.stage.addChild(plot.container);

    // Create connection manager
    const manager = new ConnectionManager();

    // Add first connection
    const source1 = new SyntheticDataSource({
        generator: TestDataFactory.createSimpleSine(30),
        pointsPerLine: 100,
        width: 800,
        lineInterval: 100,
    });

    const connId1 = manager.connect(source1, plot, { type: 'direct' });
    console.log('Connection ID:', connId1);

    app.ticker.add(() => plot.update());

    // Later: disconnect and switch to different source
    setTimeout(() => {
        manager.disconnect(connId1);

        const source2 = new SyntheticDataSource({
            generator: TestDataFactory.createFrequencySweep(30),
            pointsPerLine: 100,
            width: 800,
            lineInterval: 100,
        });

        const connId2 = manager.connect(source2, plot, { type: 'direct' });
        plot.setTitle('Frequency Sweep');
        console.log('Switched to connection:', connId2);
    }, 5000);

    return { app, plot, manager };
}

// ============================================================================
// Example 8: Complete Interactive Demo
// ============================================================================

export async function example8_InteractiveDemo() {
    console.log('=== Example 8: Interactive Demo ===');

    const app = new Application();
    await app.init({
        width: 1600,
        height: 800,
        backgroundColor: 0x1a1a26,
    });
    document.body.appendChild(app.canvas);

    // Create two plots
    const plot1 = new TimeSeriesPlot({
        x: 0,
        y: 0,
        width: 800,
        height: 800,
        title: 'Plot 1 - Press 1-5 to change',
        color: 0xff6666,
    });

    const plot2 = new TimeSeriesPlot({
        x: 800,
        y: 0,
        width: 800,
        height: 800,
        title: 'Plot 2 - Press 6-0 to change',
        color: 0x66ff66,
    });

    app.stage.addChild(plot1.container);
    app.stage.addChild(plot2.container);

    // Connection manager
    const manager = new ConnectionManager();

    // Available data sources
    const dataSources = {
        sine: () => TestDataFactory.createSimpleSine(30),
        complex: () => TestDataFactory.createComplexPattern(30),
        noise: () => TestDataFactory.createSmoothNoise(30),
        sweep: () => TestDataFactory.createFrequencySweep(30),
        burst: () => TestDataFactory.createBurstySignal(30),
    };

    // Track current connections
    let conn1Id = null;
    let conn2Id = null;

    // Helper to switch source
    const switchSource = (plot, generatorFunc, title) => {
        // Disconnect old connection
        const connId = plot === plot1 ? conn1Id : conn2Id;
        if (connId !== null) {
            manager.disconnect(connId);
        }

        // Create new connection
        const source = new SyntheticDataSource({
            generator: generatorFunc(),
            pointsPerLine: 100,
            width: plot.width,
            lineInterval: 100,
        });

        const newConnId = manager.connect(source, plot, { type: 'direct' });
        plot.setTitle(title);

        // Store connection ID
        if (plot === plot1) {
            conn1Id = newConnId;
        } else {
            conn2Id = newConnId;
        }
    };

    // Initialize with default sources
    switchSource(plot1, dataSources.sine, 'Plot 1 - Sine Wave');
    switchSource(plot2, dataSources.complex, 'Plot 2 - Complex Pattern');

    // Keyboard controls
    window.addEventListener('keydown', (e) => {
        switch (e.key) {
            case '1':
                switchSource(plot1, dataSources.sine, 'Plot 1 - Sine Wave');
                break;
            case '2':
                switchSource(plot1, dataSources.complex, 'Plot 1 - Complex Pattern');
                break;
            case '3':
                switchSource(plot1, dataSources.noise, 'Plot 1 - Perlin Noise');
                break;
            case '4':
                switchSource(plot1, dataSources.sweep, 'Plot 1 - Frequency Sweep');
                break;
            case '5':
                switchSource(plot1, dataSources.burst, 'Plot 1 - Burst Signal');
                break;
            case '6':
                switchSource(plot2, dataSources.sine, 'Plot 2 - Sine Wave');
                break;
            case '7':
                switchSource(plot2, dataSources.complex, 'Plot 2 - Complex Pattern');
                break;
            case '8':
                switchSource(plot2, dataSources.noise, 'Plot 2 - Perlin Noise');
                break;
            case '9':
                switchSource(plot2, dataSources.sweep, 'Plot 2 - Frequency Sweep');
                break;
            case '0':
                switchSource(plot2, dataSources.burst, 'Plot 2 - Burst Signal');
                break;
            case 'g':
                plot1.setGridVisible(!plot1.showGrid);
                plot2.setGridVisible(!plot2.showGrid);
                break;
            case 'c':
                plot1.clearData();
                plot2.clearData();
                break;
        }
    });

    // Update loop
    app.ticker.add(() => {
        plot1.update();
        plot2.update();
    });

    console.log('Controls:');
    console.log('  1-5: Change Plot 1 source');
    console.log('  6-0: Change Plot 2 source');
    console.log('  G: Toggle grid');
    console.log('  C: Clear data');

    return { app, plot1, plot2, manager };
}

// ============================================================================
// Quick Test: Run one of the examples
// ============================================================================

// Uncomment to run an example:
// example1_SimpleSetup();
// example2_QuickSetup();
// example3_MultiplePlots();
// example4_FunctionSource();
// example5_SwappingSources();
// example6_StreamingData();
// example7_ConnectionManager();
//example8_InteractiveDemo();