using System.Globalization;
using Microsoft.Extensions.Logging;
using Piwigo.Client.Contract;

namespace Piwigo.Client;

public class ImageApi : IImageApi
{
    private const string DateFormat = "yyyy-MM-dd";
    private const string DateTimeFormat = "yyyy-MM-dd HH:mm:ss";

    private readonly IPiwigoContext _context;
    private readonly ILogger<ImageApi> _logger;

    public ImageApi(IPiwigoContext context, ILogger<ImageApi> logger)
    {
        _context = context ?? throw new ArgumentNullException(nameof(context));
        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
    }

    public async Task AddChunkAsync(byte[] data, string originalSum, int position, CancellationToken cancellationToken = default)
    {
        var base64Data = Convert.ToBase64String(data);

        var formParams = new Dictionary<string, string>
        {
            { "data", base64Data },
            { "original_sum", originalSum },
            // type = file is required for compatibility reasons.
            // There is no other value allowed
            { "type", "file" },
            { "position", position.ToString() }
        };
        await _context.PostAsync<PiwigoResponse>(_logger, "pwg.images.addChunk", formParams, cancellationToken);
    }

    public Task<ImageUploaded> AddAsync(ImageUpload imageUpload, CancellationToken cancellationToken = default)
    {
        return AddOrUpdateAsync(null, imageUpload, cancellationToken);
    }

    public Task<ImageUploaded> UpdateAsync(int imageId, ImageUpload imageUpload, CancellationToken cancellationToken = default)
    {
        return AddOrUpdateAsync(imageId, imageUpload, cancellationToken);
    }

    public async Task<Image> GetInfoAsync(int imageId, int? commentsPage, int? commentsPerPage, CancellationToken cancellationToken = default)
    {
        var formParams = new Dictionary<string, string>
        {
            { "image_id", imageId.ToString() }
        };
        formParams.AddIfValueNotNull("comments_page", commentsPage?.ToString());
        formParams.AddIfValueNotNull("comments_per_page", commentsPerPage?.ToString());

        var response = await _context.PostAsync<PiwigoResponse<Image>>(_logger, "pwg.images.getInfo", formParams, cancellationToken);
        return response.Result;
    }

    public async Task<bool> ReadyForUploadAsync(CancellationToken cancellationToken = default)
    {
        var response = await _context.PostAsync<PiwigoResponse<CheckUpload>>(_logger, "pwg.images.checkUpload", new Dictionary<string, string>(), cancellationToken);
        return response.Result.IsReady;
    }

    public async Task<PagedImages> GetImages(int albumId, bool recursive, PagingInfo page, ImageFilter filter, ImageOrder order = ImageOrder.Name,
        CancellationToken cancellationToken = default)
    {
        var orderValue = order switch
        {
            ImageOrder.Id => "id",
            ImageOrder.File => "file",
            ImageOrder.Name => "name",
            ImageOrder.Hit => "hit",
            ImageOrder.RatingScore => "rating_score",
            ImageOrder.DateCreation => "date_creation",
            ImageOrder.DateAvailable => "date_available",
            ImageOrder.Random => "random",
            _ => throw new ArgumentOutOfRangeException(nameof(order), order, null)
        };

        var formParams = new Dictionary<string, string>
        {
            { "cat_id", albumId.ToString() },
            { "recursive", recursive.ToString() },
            { "per_page", page.PageSize.ToString() },
            { "page", page.Page.ToString() },
            { "order", orderValue }
        };

        if (filter.MinRate.HasValue)
        {
            formParams.Add("f_min_rate", filter.MinRate.Value.ToString(CultureInfo.InvariantCulture));
        }

        if (filter.MaxRate.HasValue)
        {
            formParams.Add("f_max_rate", filter.MaxRate.Value.ToString(CultureInfo.InvariantCulture));
        }

        if (filter.MinHit.HasValue)
        {
            formParams.Add("f_min_hit", filter.MinHit.Value.ToString());
        }

        if (filter.MaxHit.HasValue)
        {
            formParams.Add("f_max_hit", filter.MaxHit.Value.ToString());
        }

        if (filter.MinRatio.HasValue)
        {
            formParams.Add("f_min_ratio", filter.MinRatio.Value.ToString(CultureInfo.InvariantCulture));
        }

        if (filter.MaxRatio.HasValue)
        {
            formParams.Add("f_max_ratio", filter.MaxRatio.Value.ToString(CultureInfo.InvariantCulture));
        }

        if (filter.MaxLevel.HasValue)
        {
            formParams.Add("f_max_level", filter.MaxLevel.Value.ToString());
        }

        if (filter.MinDateAvailable.HasValue)
        {
            formParams.Add("f_min_date_available", filter.MinDateAvailable.Value.ToString(DateFormat));
        }

        if (filter.MaxDataAvailable.HasValue)
        {
            formParams.Add("f_max_date_available", filter.MaxDataAvailable.Value.ToString(DateFormat));
        }

        if (filter.MinDateCreated.HasValue)
        {
            formParams.Add("f_min_date_created", filter.MinDateCreated.Value.ToString(DateFormat));
        }

        if (filter.MaxDateCreated.HasValue)
        {
            formParams.Add("f_max_date_created", filter.MaxDateCreated.Value.ToString(DateFormat));
        }

        var response = await _context.PostAsync<PiwigoResponse<PagedImages>>(_logger, "pwg.categories.getImages", formParams, cancellationToken);
        return response.Result;
    }

    private async Task<ImageUploaded> AddOrUpdateAsync(int? imageId, ImageUpload imageUpload, CancellationToken cancellationToken)
    {
        var formParams = new Dictionary<string, string>
        {
            { "original_sum", imageUpload.OriginalSum },
            { "check_uniqueness", "true" }
        };

        formParams.AddIfValueNotNull("original_filename", imageUpload.OriginalFileName);
        formParams.AddIfValueNotNull("name", imageUpload.Name);
        formParams.AddIfValueNotNull("author", imageUpload.Author);
        formParams.AddIfValueNotNull("date_creation", imageUpload.CreatedAt?.ToString(DateTimeFormat));
        formParams.AddIfValueNotNull("comment", imageUpload.Comment);
        formParams.AddIfValueNotNull("level", imageUpload.Level?.ToString());

        var albums = imageUpload.Albums != null ? string.Join(";", imageUpload.Albums.Select(a => a.Rank.HasValue ? $"{a.AlbumId},{a.Rank}" : $"{a.AlbumId}")) : null;
        formParams.AddIfValueNotNull("categories", albums);

        var tags = imageUpload.TagIds != null ? string.Join(",", imageUpload.TagIds.Select(t => t.ToString())) : null;
        formParams.AddIfValueNotNull("tag_ids", tags);
        formParams.AddIfValueNotNull("image_id", imageId?.ToString());

        var response = await _context.PostAsync<PiwigoResponse<ImageUploaded>>(_logger, "pwg.images.add", formParams, cancellationToken);

        return response.Result;
    }
}