using System;
using VavCore.Wrapper;
using VavCoreClass = VavCore.Wrapper.VavCore;

namespace VavCoreTest;

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("=== VavCore.Wrapper P/Invoke Test ===");
        Console.WriteLine();

        // Test 1: Library Initialization
        Console.WriteLine("Test 1: Library Initialization");
        try
        {
            bool initialized = VavCoreClass.Initialize();
            Console.WriteLine($"  VavCore.Initialize(): {(initialized ? "SUCCESS" : "FAILED")}");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"  ERROR: {ex.Message}");
            Console.WriteLine($"  Exception Type: {ex.GetType().Name}");
            if (ex.InnerException != null)
            {
                Console.WriteLine($"  Inner Exception: {ex.InnerException.Message}");
            }
        }
        Console.WriteLine();

        // Test 2: Version Information
        Console.WriteLine("Test 2: Version Information");
        try
        {
            string version = VavCoreClass.GetVersion();
            Console.WriteLine($"  VavCore Version: {version}");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"  ERROR getting version: {ex.Message}");
        }
        Console.WriteLine();

        // Test 3: Platform Information
        Console.WriteLine("Test 3: Platform Information");
        try
        {
            var optimalDecoder = VavCoreClass.GetOptimalDecoderType();
            Console.WriteLine($"  Optimal Decoder: {optimalDecoder}");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"  ERROR getting platform info: {ex.Message}");
        }
        Console.WriteLine();

        // Test 4: Player Creation and Basic Operations
        Console.WriteLine("Test 4: Player Creation and Basic Operations");
        VavCoreClass? player = null;
        try
        {
            player = new VavCoreClass();
            Console.WriteLine("  Player created successfully");

            // Test basic properties
            Console.WriteLine($"  Player is open: {player.IsOpen}");
            Console.WriteLine($"  Player is end of file: {player.IsEndOfFile}");

            // Test decoder configuration
            bool decoderSet = player.SetDecoderType(VavCoreClass.DecoderType.Auto);
            Console.WriteLine($"  Set Auto decoder: {(decoderSet ? "SUCCESS" : "FAILED")}");

            bool qualitySet = player.SetQualityMode(VavCoreClass.QualityMode.Fast);
            Console.WriteLine($"  Set Fast quality mode: {(qualitySet ? "SUCCESS" : "FAILED")}");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"  ERROR creating player: {ex.Message}");
            if (ex.InnerException != null)
            {
                Console.WriteLine($"  Inner Exception: {ex.InnerException.Message}");
            }
        }
        Console.WriteLine();

        // Test 5: File Operations (if test file exists)
        Console.WriteLine("Test 5: File Operations");
        if (player != null)
        {
            try
            {
                // Try common test file paths
                string[] testFiles = {
                    @"D:\Project\video-av1\sample\output.webm",
                    @"D:\Project\video-av1\sample\simple_test.webm",
                    @"sample.webm",
                    @"test.webm"
                };

                bool fileOpened = false;
                string usedFile = "";

                foreach (string testFile in testFiles)
                {
                    if (System.IO.File.Exists(testFile))
                    {
                        Console.WriteLine($"  Attempting to open: {testFile}");
                        fileOpened = player.OpenFile(testFile);
                        if (fileOpened)
                        {
                            usedFile = testFile;
                            Console.WriteLine($"  File opened successfully: {testFile}");
                            break;
                        }
                        else
                        {
                            Console.WriteLine($"  Failed to open: {testFile}");
                        }
                    }
                }

                if (!fileOpened)
                {
                    Console.WriteLine("  No test files found or could be opened");
                }
                else
                {
                    // Test metadata
                    if (player.GetMetadata(out var metadata))
                    {
                        Console.WriteLine($"  Video Resolution: {metadata.Width}x{metadata.Height}");
                        Console.WriteLine($"  Frame Rate: {metadata.FrameRate:F2} fps");
                        Console.WriteLine($"  Duration: {metadata.DurationSeconds:F2} seconds");
                        Console.WriteLine($"  Total Frames: {metadata.TotalFrames}");
                    }
                    else
                    {
                        Console.WriteLine("  Failed to get metadata");
                    }

                    // Test frame decoding
                    Console.WriteLine("  Testing frame decoding:");
                    int frameCount = 0;
                    for (int i = 0; i < 20; i++)
                    {
                        if (player.DecodeNextFrame(out var frame))
                        {
                            frameCount++;
                            Console.WriteLine($"    Frame {frameCount}: {frame.Width}x{frame.Height}, " +
                                            $"Timestamp: {frame.TimestampSeconds:F3}s");
                        }
                        else
                        {
                            Console.WriteLine($"    Failed to decode frame {i + 1}");
                            break;
                        }

                        if (player.IsEndOfFile)
                        {
                            Console.WriteLine("    Reached end of file");
                            break;
                        }
                    }

                    // Test seeking
                    Console.WriteLine("  Testing seek functionality:");
                    if (player.Reset())
                    {
                        Console.WriteLine("    Reset to beginning: SUCCESS");
                    }
                    else
                    {
                        Console.WriteLine("    Reset to beginning: FAILED");
                    }

                    if (player.SeekToTime(1.0))
                    {
                        Console.WriteLine("    Seek to 1.0 seconds: SUCCESS");
                        if (player.DecodeNextFrame(out var seekFrame))
                        {
                            Console.WriteLine($"    Frame after seek: Timestamp {seekFrame.TimestampSeconds:F3}s");
                        }
                    }
                    else
                    {
                        Console.WriteLine("    Seek to 1.0 seconds: FAILED");
                    }

                    // Test performance metrics
                    if (player.GetPerformanceMetrics(out var metrics))
                    {
                        Console.WriteLine("  Performance Metrics:");
                        Console.WriteLine($"    Frames Decoded: {metrics.FramesDecoded}");
                        Console.WriteLine($"    Frames Dropped: {metrics.FramesDropped}");
                        Console.WriteLine($"    Average Decode Time: {metrics.AverageDecodeTimeMs:F2}ms");
                        Console.WriteLine($"    Current FPS: {metrics.CurrentFps:F2}");
                        Console.WriteLine($"    Quality Level: {metrics.CurrentQualityLevel}");
                    }

                    // Test user-friendly helpers
                    Console.WriteLine("  Video Info Dictionary:");
                    var videoInfo = player.GetVideoInfo();
                    foreach (var kvp in videoInfo)
                    {
                        Console.WriteLine($"    {kvp.Key}: {kvp.Value}");
                    }

                    Console.WriteLine("  Stats Dictionary:");
                    var stats = player.GetStats();
                    foreach (var kvp in stats)
                    {
                        Console.WriteLine($"    {kvp.Key}: {kvp.Value}");
                    }

                    // Close file
                    player.CloseFile();
                    Console.WriteLine("  File closed successfully");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"  ERROR in file operations: {ex.Message}");
                if (ex.InnerException != null)
                {
                    Console.WriteLine($"  Inner Exception: {ex.InnerException.Message}");
                }
            }
        }
        Console.WriteLine();

        // Test 6: Surface Types
        Console.WriteLine("Test 6: Surface Types");
        try
        {
            Console.WriteLine("  Available Surface Types:");
            var surfaceTypes = Enum.GetValues<VavCoreClass.SurfaceType>();
            foreach (var surfaceType in surfaceTypes)
            {
                Console.WriteLine($"    {surfaceType} = {(int)surfaceType}");
            }

            Console.WriteLine("  Available Decoder Types:");
            var decoderTypes = Enum.GetValues<VavCoreClass.DecoderType>();
            foreach (var decoderType in decoderTypes)
            {
                Console.WriteLine($"    {decoderType} = {(int)decoderType}");
            }

            Console.WriteLine("  Available Quality Modes:");
            var qualityModes = Enum.GetValues<VavCoreClass.QualityMode>();
            foreach (var qualityMode in qualityModes)
            {
                Console.WriteLine($"    {qualityMode} = {(int)qualityMode}");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"  ERROR listing enums: {ex.Message}");
        }
        Console.WriteLine();

        // Test 7: Cleanup
        Console.WriteLine("Test 7: Cleanup");
        try
        {
            player?.Dispose();
            Console.WriteLine("  Player disposed successfully");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"  ERROR during disposal: {ex.Message}");
        }
        Console.WriteLine();

        Console.WriteLine("=== VavCore.Wrapper Test Completed ===");
    }
}