using System.Net.Http.Json;
using System.Text.Json;

namespace SatelliteProvider.IntegrationTests;

public static class RegionTests
{
    private static readonly JsonSerializerOptions JsonOptions = new()
    {
        PropertyNameCaseInsensitive = true
    };

    public static async Task RunRegionProcessingTest_200m_Zoom18(HttpClient httpClient)
    {
        Console.WriteLine();
        Console.WriteLine("Test: Region Processing 200m at Zoom 18");
        Console.WriteLine("------------------------------------------------------------------");

        const double latitude = 47.461747;
        const double longitude = 37.647063;
        const double sizeMeters = 200;
        const int zoomLevel = 18;
        const bool stitchTiles = false;

        await RunRegionProcessingTest(httpClient, latitude, longitude, sizeMeters, zoomLevel, stitchTiles);

        Console.WriteLine();
        Console.WriteLine("Region Processing Test (200m, Zoom 18): PASSED");
    }

    public static async Task RunRegionProcessingTest_400m_Zoom17(HttpClient httpClient)
    {
        Console.WriteLine();
        Console.WriteLine("Test: Region Processing 400m at Zoom 17");
        Console.WriteLine("------------------------------------------------------------------");

        const double latitude = 47.461747;
        const double longitude = 37.647063;
        const double sizeMeters = 400;
        const int zoomLevel = 17;
        const bool stitchTiles = false;

        await RunRegionProcessingTest(httpClient, latitude, longitude, sizeMeters, zoomLevel, stitchTiles);

        Console.WriteLine();
        Console.WriteLine("Region Processing Test (400m, Zoom 17): PASSED");
    }

    public static async Task RunRegionProcessingTest_500m_Zoom18(HttpClient httpClient)
    {
        Console.WriteLine();
        Console.WriteLine("Test: Region Processing 500m at Zoom 18 with Stitching");
        Console.WriteLine("------------------------------------------------------------------");

        const double latitude = 47.461747;
        const double longitude = 37.647063;
        const double sizeMeters = 500;
        const int zoomLevel = 18;
        const bool stitchTiles = true;

        await RunRegionProcessingTest(httpClient, latitude, longitude, sizeMeters, zoomLevel, stitchTiles);

        Console.WriteLine();
        Console.WriteLine("Region Processing Test (500m, Zoom 18 with Stitching): PASSED");
    }

    private static async Task RunRegionProcessingTest(
        HttpClient httpClient,
        double latitude,
        double longitude,
        double sizeMeters,
        int zoomLevel,
        bool stitchTiles)
    {
        var regionId = Guid.NewGuid();

        Console.WriteLine($"Requesting region: ID={regionId}");
        Console.WriteLine($"  Coordinates: ({latitude}, {longitude})");
        Console.WriteLine($"  Size: {sizeMeters}m");
        Console.WriteLine($"  Zoom Level: {zoomLevel}");
        Console.WriteLine($"  Stitch Tiles: {stitchTiles}");
        Console.WriteLine();

        var requestRegion = new RequestRegionRequest
        {
            Id = regionId,
            Latitude = latitude,
            Longitude = longitude,
            SizeMeters = sizeMeters,
            ZoomLevel = zoomLevel,
            StitchTiles = stitchTiles
        };

        var requestResponse = await httpClient.PostAsJsonAsync("/api/satellite/request", requestRegion);
        
        if (!requestResponse.IsSuccessStatusCode)
        {
            var errorContent = await requestResponse.Content.ReadAsStringAsync();
            throw new Exception($"Region request failed with status {requestResponse.StatusCode}: {errorContent}");
        }

        var initialStatus = await requestResponse.Content.ReadFromJsonAsync<RegionStatusResponse>(JsonOptions);
        
        if (initialStatus == null)
        {
            throw new Exception("No status returned from region request");
        }

        Console.WriteLine($"✓ Region queued successfully");
        Console.WriteLine($"  Initial Status: {initialStatus.Status}");
        Console.WriteLine();

        Console.WriteLine("Polling for region status updates...");
        RegionStatusResponse? finalStatus = null;
        int maxAttempts = 120;
        
        for (int i = 0; i < maxAttempts; i++)
        {
            await Task.Delay(2000);
            
            var statusResponse = await httpClient.GetAsync($"/api/satellite/region/{regionId}");
            
            if (!statusResponse.IsSuccessStatusCode)
            {
                var errorContent = await statusResponse.Content.ReadAsStringAsync();
                throw new Exception($"Status check failed with status {statusResponse.StatusCode}: {errorContent}");
            }

            var status = await statusResponse.Content.ReadFromJsonAsync<RegionStatusResponse>(JsonOptions);
            
            if (status == null)
            {
                throw new Exception("No status returned");
            }

            Console.WriteLine($"  Attempt {i + 1}/{maxAttempts}: Status = {status.Status}");

            if (status.Status == "completed" || status.Status == "failed")
            {
                finalStatus = status;
                break;
            }
        }

        if (finalStatus == null)
        {
            throw new Exception($"Region processing did not complete in time (waited {maxAttempts * 2} seconds)");
        }

        Console.WriteLine();
        Console.WriteLine("Region Processing Results:");
        Console.WriteLine($"  Status: {finalStatus.Status}");
        Console.WriteLine($"  Tiles Downloaded: {finalStatus.TilesDownloaded}");
        Console.WriteLine($"  Tiles Reused: {finalStatus.TilesReused}");
        Console.WriteLine($"  CSV File: {finalStatus.CsvFilePath}");
        Console.WriteLine($"  Summary File: {finalStatus.SummaryFilePath}");
        Console.WriteLine($"  Created At: {finalStatus.CreatedAt:yyyy-MM-dd HH:mm:ss}");
        Console.WriteLine($"  Updated At: {finalStatus.UpdatedAt:yyyy-MM-dd HH:mm:ss}");

        if (finalStatus.Status != "completed")
        {
            throw new Exception($"Expected status 'completed', got '{finalStatus.Status}'");
        }

        if (string.IsNullOrEmpty(finalStatus.CsvFilePath))
        {
            throw new Exception("CSV file path is empty");
        }

        if (string.IsNullOrEmpty(finalStatus.SummaryFilePath))
        {
            throw new Exception("Summary file path is empty");
        }

        Console.WriteLine();
        Console.WriteLine("✓ Region processed successfully");
        Console.WriteLine("✓ CSV and summary files created");
    }
}