<?php

declare(strict_types=1);

/**
 * LiveComponent Performance Profiling Usage Examples
 *
 * Dieses Script demonstriert die Performance-Profiling-Integration
 * für LiveComponents mit Timeline-Visualisierung.
 *
 * Ausführung: php examples/livecomponent-profiling-usage.php
 */

require_once __DIR__ . '/../vendor/autoload.php';

use App\Framework\Performance\NestedPerformanceTracker;
use App\Framework\Performance\PerformanceCategory;
use App\Framework\DateTime\SystemClock;
use App\Framework\DateTime\SystemHighResolutionClock;
use App\Framework\Performance\MemoryMonitor;

// Tracker initialisieren
$tracker = new NestedPerformanceTracker(
    new SystemClock(),
    new SystemHighResolutionClock(),
    new MemoryMonitor()
);

echo "=== LiveComponent Performance Profiling Examples ===\n\n";

// Example 1: Component Lifecycle Profiling
echo "Example 1: Component Lifecycle Profiling\n";
echo str_repeat('-', 50) . "\n";

// Simuliere kompletten LiveComponent Lifecycle
$tracker->measure(
    'livecomponent.counter.increment',
    PerformanceCategory::CUSTOM,
    function () use ($tracker) {
        // 1. Schema Derive/Cache
        $tracker->measure(
            'livecomponent.schema.derive',
            PerformanceCategory::CACHE,
            function () {
                usleep(500); // 0.5ms - Schema aus Cache
            },
            ['component' => 'counter']
        );

        // 2. Action Execute
        $tracker->measure(
            'livecomponent.action.execute',
            PerformanceCategory::CUSTOM,
            function () {
                usleep(2000); // 2ms - Business Logic
            },
            ['action' => 'increment', 'component' => 'counter']
        );

        // 3. State Validate
        $tracker->measure(
            'livecomponent.state.validate',
            PerformanceCategory::CUSTOM,
            function () {
                usleep(300); // 0.3ms - Validation
            },
            ['component' => 'counter']
        );

        // 4. Lifecycle Hook onUpdate
        $tracker->measure(
            'livecomponent.lifecycle.onUpdate',
            PerformanceCategory::CUSTOM,
            function () {
                usleep(100); // 0.1ms - Hook
            },
            ['component' => 'counter']
        );
    },
    ['component' => 'counter', 'action' => 'increment']
);

// Timeline ausgeben
echo "\nComponent Action Timeline:\n";
$timeline = $tracker->generateTimeline();

foreach ($timeline as $event) {
    $indent = str_repeat('  ', $event['depth']);
    echo sprintf(
        "  %s[%s] %s (%.2fms)\n",
        $indent,
        $event['category'],
        $event['name'],
        $event['duration_ms']
    );
}

echo "\n" . str_repeat('=', 50) . "\n\n";

// Example 2: Component Render Profiling
echo "Example 2: Component Render Profiling\n";
echo str_repeat('-', 50) . "\n";

$tracker->reset();

// Simuliere Component Render mit Cache
$tracker->measure(
    'livecomponent.render.user-card',
    PerformanceCategory::VIEW,
    function () use ($tracker) {
        // 1. Cache Get (Hit)
        $tracker->measure(
            'livecomponent.cache.get',
            PerformanceCategory::CACHE,
            function () {
                usleep(300); // 0.3ms - Cache Hit
                return ['html' => '<div>cached</div>', 'needs_refresh' => false];
            },
            ['component' => 'user-card']
        );
    },
    ['component' => 'user-card']
);

// Simuliere Component Render ohne Cache
$tracker->measure(
    'livecomponent.render.product-list',
    PerformanceCategory::VIEW,
    function () use ($tracker) {
        // 1. Cache Get (Miss)
        $tracker->measure(
            'livecomponent.cache.get',
            PerformanceCategory::CACHE,
            function () {
                usleep(200); // 0.2ms - Cache Miss
                return ['html' => null, 'needs_refresh' => false];
            },
            ['component' => 'product-list']
        );

        // 2. Get Render Data
        $tracker->measure(
            'livecomponent.getRenderData',
            PerformanceCategory::CUSTOM,
            function () {
                usleep(1000); // 1ms - Data preparation
            },
            ['component' => 'product-list']
        );

        // 3. Template Render
        $tracker->measure(
            'livecomponent.template.render',
            PerformanceCategory::TEMPLATE,
            function () use ($tracker) {
                usleep(5000); // 5ms - Template rendering

                // Nested: Template processors
                $tracker->measure(
                    'template.processor.placeholder',
                    PerformanceCategory::TEMPLATE,
                    function () {
                        usleep(1000); // 1ms
                    }
                );

                $tracker->measure(
                    'template.processor.component',
                    PerformanceCategory::TEMPLATE,
                    function () {
                        usleep(2000); // 2ms
                    }
                );
            },
            ['component' => 'product-list', 'template' => 'components/product-list.view.php']
        );

        // 4. Cache Set
        $tracker->measure(
            'livecomponent.cache.set',
            PerformanceCategory::CACHE,
            function () {
                usleep(400); // 0.4ms - Cache storage
            },
            ['component' => 'product-list']
        );
    },
    ['component' => 'product-list']
);

echo "\nComponent Render Timeline:\n";
$timeline = $tracker->generateTimeline();

foreach ($timeline as $event) {
    $indent = str_repeat('  ', $event['depth']);
    $contextInfo = !empty($event['context']['template'])
        ? " ({$event['context']['template']})"
        : '';

    echo sprintf(
        "  %s[%s] %s%s (%.2fms self, %.2fms total)\n",
        $indent,
        $event['category'],
        $event['name'],
        $contextInfo,
        $event['self_time_ms'],
        $event['duration_ms']
    );
}

echo "\n" . str_repeat('=', 50) . "\n\n";

// Example 3: Multiple Component Actions (Flamegraph)
echo "Example 3: Multiple Component Actions (Flamegraph)\n";
echo str_repeat('-', 50) . "\n";

$tracker->reset();

// Simuliere mehrere Component Actions
for ($i = 0; $i < 3; $i++) {
    $tracker->measure(
        'livecomponent.search.updateQuery',
        PerformanceCategory::CUSTOM,
        function () use ($tracker) {
            $tracker->measure(
                'livecomponent.action.execute',
                PerformanceCategory::CUSTOM,
                function () {
                    usleep(3000); // 3ms
                }
            );

            $tracker->measure(
                'livecomponent.state.validate',
                PerformanceCategory::CUSTOM,
                function () {
                    usleep(500); // 0.5ms
                }
            );
        },
        ['component' => 'search', 'action' => 'updateQuery']
    );
}

echo "\nFlamegraph Data (aggregated):\n";
$flamegraph = $tracker->generateFlamegraph();

foreach ($flamegraph as $entry) {
    echo sprintf(
        "  %s → %.1f samples\n",
        $entry['stack_trace'],
        $entry['samples']
    );
}

echo "\n" . str_repeat('=', 50) . "\n\n";

// Example 4: Performance Budget Validation for LiveComponents
echo "Example 4: Performance Budget Validation\n";
echo str_repeat('-', 50) . "\n";

$budgets = [
    'livecomponent.action.execute' => 5,     // max 5ms for actions
    'livecomponent.template.render' => 10,   // max 10ms for templates
    'livecomponent.cache.get' => 1,          // max 1ms for cache
    'livecomponent.render' => 20,            // max 20ms total render
];

$violations = [];

foreach ($timeline as $event) {
    foreach ($budgets as $operation => $budget) {
        if (str_contains($event['name'], $operation)) {
            if ($event['duration_ms'] > $budget) {
                $violations[] = [
                    'operation' => $event['name'],
                    'component' => $event['context']['component'] ?? 'unknown',
                    'duration' => $event['duration_ms'],
                    'budget' => $budget,
                    'exceeded_by' => $event['duration_ms'] - $budget,
                    'percentage' => (($event['duration_ms'] - $budget) / $budget) * 100
                ];
            }
        }
    }
}

if (!empty($violations)) {
    echo "\n⚠️  Performance Budget Violations:\n";
    foreach ($violations as $violation) {
        echo sprintf(
            "  • [%s] %s: %.2fms (budget: %.2fms, exceeded by %.2fms / %.1f%%)\n",
            $violation['component'],
            $violation['operation'],
            $violation['duration'],
            $violation['budget'],
            $violation['exceeded_by'],
            $violation['percentage']
        );
    }
} else {
    echo "\n✅ All LiveComponent operations within performance budget!\n";
}

echo "\n" . str_repeat('=', 50) . "\n\n";

// Example 5: Export für Chrome DevTools
echo "Example 5: Chrome DevTools Export\n";
echo str_repeat('-', 50) . "\n";

// Generate full timeline with all examples
$fullTimeline = $tracker->generateTimeline();

// Convert to Chrome Trace Event Format
$traceEvents = [];

foreach ($fullTimeline as $event) {
    // Begin Event
    $traceEvents[] = [
        'name' => $event['name'],
        'cat' => $event['category'],
        'ph' => 'B',
        'ts' => (int)($event['start_time'] * 1_000_000),
        'pid' => 1,
        'tid' => 1,
        'args' => $event['context']
    ];

    // End Event
    $traceEvents[] = [
        'name' => $event['name'],
        'cat' => $event['category'],
        'ph' => 'E',
        'ts' => (int)($event['end_time'] * 1_000_000),
        'pid' => 1,
        'tid' => 1
    ];
}

$chromeTrace = [
    'traceEvents' => $traceEvents,
    'displayTimeUnit' => 'ms',
    'otherData' => [
        'version' => '1.0',
        'framework' => 'Custom PHP Framework - LiveComponents',
        'profiler' => 'NestedPerformanceTracker'
    ]
];

$chromeTraceFile = __DIR__ . '/../tests/tmp/livecomponent-trace.json';
@mkdir(dirname($chromeTraceFile), 0755, true);

file_put_contents($chromeTraceFile, json_encode($chromeTrace, JSON_PRETTY_PRINT));

echo "\nChrome Trace saved to: {$chromeTraceFile}\n";
echo "View in Chrome DevTools:\n";
echo "  1. Open Chrome and navigate to: chrome://tracing\n";
echo "  2. Click 'Load' and select: {$chromeTraceFile}\n";
echo "  3. Explore the LiveComponent lifecycle timeline\n";

echo "\n" . str_repeat('=', 50) . "\n\n";

// Summary
echo "✅ LiveComponent Performance Profiling Examples completed!\n\n";

echo "Generated Files:\n";
echo "  • {$chromeTraceFile}\n\n";

echo "Key Insights:\n";
echo "  • LiveComponent actions are fully traced with nested operations\n";
echo "  • Component render pipeline is profiled (cache → render → template)\n";
echo "  • Lifecycle hooks (onMount, onUpdate) are measured\n";
echo "  • Performance budgets can be validated per component\n";
echo "  • Chrome DevTools integration for visual analysis\n\n";

echo "Next Steps:\n";
echo "  1. Load trace in Chrome DevTools for visual timeline\n";
echo "  2. Identify slow component actions and rendering\n";
echo "  3. Set performance budgets for production monitoring\n";
echo "  4. Integrate with logging for continuous profiling\n\n";