using System.Threading.Tasks;


namespace TINK.Services.Permissions.Plugin
{
	using global::Plugin.Permissions;

	public class Permissions : ILocationPermission
	{
		/// <summary> Checks the permission status.</summary>
		public async Task<Status> CheckStatusAsync()
		{
			switch (await CrossPermissions.Current.CheckPermissionStatusAsync<LocationPermission>())
			{
				case global::Plugin.Permissions.Abstractions.PermissionStatus.Denied:
					return Status.Denied;

				case global::Plugin.Permissions.Abstractions.PermissionStatus.Granted:
					return Status.Granted;

				case global::Plugin.Permissions.Abstractions.PermissionStatus.Unknown:
					return Status.Unknown;

				default:
					// Comprises
					// - PermissionStatus.Disabled and
					// - PermissionStatus.Restricted.
					return Status.DeniedRequiresSettingsUI;
			}
		}

		/// <summary> Requests location permission.</summary>
		/// <returns>Permission status after request.</returns>
		public async Task<Status> RequestAsync()
		{
			switch (await CrossPermissions.Current.RequestPermissionAsync<LocationPermission>())
			{
				case global::Plugin.Permissions.Abstractions.PermissionStatus.Denied:
					return Status.Denied;

				case global::Plugin.Permissions.Abstractions.PermissionStatus.Granted:
					return Status.Granted;

				case global::Plugin.Permissions.Abstractions.PermissionStatus.Unknown:
					return Status.Unknown;

				default:
					// Comprises
					// - PermissionStatus.Disabled and
					// - PermissionStatus.Restricted.
					return Status.DeniedRequiresSettingsUI;
			}
		}

		/// <summary> Opens app settings dialog.</summary>
		public bool OpenAppSettings()
			=> CrossPermissions.Current.OpenAppSettings();
	}
}