using JellyGlass.Models;
using JellyGlass.Models.JellyfinApi;

namespace JellyGlass.Services;

public class LibraryService : ILibraryService
{
	private IClientService _clientService;

	public LibraryService(IClientService serverService)
	{
		_clientService = serverService;
	}

	public async Task<Library[]> GetLibraries()
	{
		var clients = await _clientService.GetJellyfinClients();

		var libraries = new Dictionary<string, Library>();

		foreach (var client in clients)
		{
			var clientLibraries = await client.GetInstanceLibraries();

			foreach (var library in clientLibraries)
			{
				if (library.Name == "Collections" || library.Name == "Playlists")
				{
					continue;
				}

				if (!libraries.ContainsKey(library.Name))
				{

					libraries.Add(library.Name, new Library()
					{
						Name = library.Name,
						ThumbnailUrl = $"{client.InstanceUrl}/Items/{library.Id}/Primary"
					});
				}
			}
		}

		return libraries.Values.ToArray();
	}

	public async Task<Item> GetLibrary(string libraryName, string serverId)
	{
		var client = await _clientService.GetClientForServerId(serverId);

		if (client == null)
		{
			throw new Exception($"Could not find client with ID of {serverId}");
		}

		var libraries = await client.GetInstanceLibraries();

		foreach (var library in libraries)
		{
			if (library.Name == libraryName)
			{
				return library;
			}
		}

		throw new Exception("Couldn't find library");
	}

	public async Task<ItemDTO[]> GetItemsFromLibrary(string libraryName, string serverId)
	{
		var client = await _clientService.GetClientForServerId(serverId);

		var library = await GetLibrary(libraryName, serverId);

		var items = await client.GetItemChildren(library.Id);

		var dtos = new List<ItemDTO>();

		foreach (var item in items)
		{
			dtos.Add(new ItemDTO(item, client.InstanceUrl));
		}

		return dtos.ToArray();
	}

	public async Task<Library[]> GetLibrariesFromServer(string serverId)
	{
		var client = await _clientService.GetClientForServerId(serverId);

		var libraries = new Dictionary<string, Library>();

		var clientLibraries = await client.GetInstanceLibraries();

		foreach (var library in clientLibraries)
		{
			if (library.Name == "Collections" || library.Name == "Playlists")
			{
				continue;
			}

			if (!libraries.ContainsKey(library.Name))
			{

				libraries.Add(library.Name, new Library()
				{
					Name = library.Name,
					ThumbnailUrl = $"{client.InstanceUrl}/Items/{library.Id}/Primary"
				});
			}
		}

		return libraries.Values.ToArray();
	}

	// public async Task<ItemDTO[]> GetChildrenFromItems(ItemDTO[] items)
	// {
	// 	var children = new List<ItemDTO>();

	// 	foreach (var item in items)
	// 	{
	// 		var client = _serverService.GetClientForServerId(item.ServerID);

	// 		var itemChildren = await client.GetItemChildren(item.ID);

	// 		foreach (var child in itemChildren.Items)
	// 		{
	// 			children.Add(new ItemDTO(child, client.InstanceUrl));
	// 		}
	// 	}

	// 	return children.ToArray();
	// }

	// public async Task<ItemDTO> GetItemsByName(string name, string itemType)
	// {

	// }

	// public async Task<ItemDTO> GetItemsByType(string itemType)
	// {

	// }
}