using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Net;
using TINK.Model.Bikes.BikeInfoNS.BluetoothLock;
using TINK.Model.Connector;
using TINK.Model.Device;
using TINK.Repository.Exception;
using TINK.Services.Logging;

namespace TINK.Repository.Request
{
	/// <summary> Creates requests if a user is logged in.</summary>
	public class RequestBuilderLoggedIn : IRequestBuilder
	{
		/// <summary> Constructs a object for building requests. </summary>
		/// <param name="merchantId">Holds the id denoting the merchant.</param>
		/// <param name="uiIsoLangugageName">Two letter ISO language name.</param>
		/// <param name="smartDevice">Holds info about smart device.</param>
		public RequestBuilderLoggedIn(
			string merchantId,
			string uiIsoLangugageName,
			string sessionCookie,
			ISmartDevice smartDevice = null)
		{
			MerchantId = !string.IsNullOrEmpty(merchantId)
				? merchantId
				: throw new ArgumentException("Merchant id must not be null.", nameof(merchantId));

			SessionCookie = !string.IsNullOrEmpty(sessionCookie)
				? sessionCookie
				: throw new ArgumentException("Session cookie must not be null.", nameof(sessionCookie));

			UiIsoLanguageNameParameter = RequestBuilderHelper.GetLanguageParameter(WebUtility.UrlEncode(uiIsoLangugageName));

			AuthCookieParameter = $"&authcookie={WebUtility.UrlEncode(SessionCookie)}{WebUtility.UrlEncode(MerchantId)}";

			SmartDevice = smartDevice;
		}

		/// <summary> Holds the id denoting the merchant. </summary>
		public string MerchantId { get; }

		/// <summary> Holds the session cookie if a user is logged in. </summary>
		public string SessionCookie { get; }

		/// <summary> Holds the current ui two letter ISO language name. </summary>
		public string UiIsoLanguageNameParameter { get; }

		/// <summary> Auth cookie parameter. </summary>
		private string AuthCookieParameter { get; }

		/// <summary>Holds info about smart device.</summary>
		private ISmartDevice SmartDevice { get; }

		/// <summary> Gets request to log user in. </summary>
		/// <param name="mailAddress">Mail address of user to log in.</param>
		/// <param name="password">Password to log in.</param>
		/// <param name="deviceId">Id specifying user and hardware.</param>
		/// <remarks>Response which holds auth cookie <see cref="ResponseBase.authcookie"/></remarks>
		public string DoAuthorization(
			string mailAddress,
			string password,
			string deviceId)
			=> throw new CallNotRequiredException();

		/// <summary> Logs user out. </summary>
		public string DoAuthout()
			=> "request=authout" +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;

		/// <summary>Gets bikes available.</summary>
		/// <returns>Request to query list of bikes available.</returns>
		public string GetBikesAvailable()
			=> "request=bikes_available&system=all" +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;

		/// <summary> Gets a list of bikes reserved/ booked by active user from Copri.</summary>
		/// <returns>Request to query list of bikes occupied.</returns>
		public string GetBikesOccupied()
			=> "request=user_bikes_occupied&system=all&genkey=1" +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;

		/// <summary> Get list of stations from file. </summary>
		/// <returns>Request to query list of station.</returns>
		public string GetStations()
			=> "request=stations_available" +
				AuthCookieParameter +
				SmartDevice.GetSmartDeviceParameters() +
				UiIsoLanguageNameParameter;

		/// <summary> Gets reservation request (synonym: reservation == request == reservieren). </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of the bike to reserve.</param>
		/// <returns>Request to reserve bike.</returns>
		public string DoReserve(string bikeId)
			=> "request=booking_request" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				SmartDevice.GetSmartDeviceParameters() +
				UiIsoLanguageNameParameter;

		/// <summary> Gets request to cancel reservation. </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of the bike to cancel reservation for.</param>
		/// <returns>Request on cancel booking request.</returns>
		public string DoCancelReservation(string bikeId)
			=> "request=booking_cancel" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;

		/// <summary> Request to get keys. </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of the bike to get keys for.</param>
		/// <returns>Request to get keys.</returns>
		public string CalculateAuthParameters(string bikeId)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				"&genkey=1" +
				UiIsoLanguageNameParameter;

		/// <summary> Gets the request for notifying about start of returning sequence. </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of the bike to return.</param>
		/// <returns>Request to notify about start of returning sequence.</returns>
		public string StartReturningBike(string bikeId)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				GetLockStateParameter(lock_state.locking) +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;

		/// <summary> Gets the request for updating lock state for a booked bike. </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of the bike to update locking state for.</param>
		/// <param name="state">New locking state.</param>
		/// <param name="versionInfo">Information about lock (firmware version, hardware version, ...).</param>
		/// <returns>Request to update locking state.</returns>
		public string UpdateLockingState(
			string bikeId,
			lock_state state,
			LocationDto geolocation,
			double batteryPercentage,
			IVersionInfo versionInfo)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				GetLocationParameters(geolocation) +
				GetLockStateParameter(state) +
				GetBatteryPercentageParameters(batteryPercentage) +
				GetVersionInfoParameter(versionInfo) +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;


		/// <summary> Gets booking request (synonym: booking == renting == mieten). </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of the bike to book.</param>
		/// <param name="guid">Used to publish GUID from app to copri. Used for initial setup of bike in copri.</param>
		/// <param name="batteryPercentage">Holds the filling level percentage of the battery.</param>
		/// <param name="nextAction">If not null next locking action which is performed after booking.</param>
		/// <returns>Request to booking bike.</returns>
		public string DoBook(string bikeId, Guid guid, double batteryPercentage, LockingAction? nextAction = null)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				$"&Ilockit_GUID={guid}" +
				"&state=occupied" +
				GetLockStateParameter(nextAction.GetLockState()) +
				GetBatteryPercentageParameters(batteryPercentage) +
				UiIsoLanguageNameParameter;

		/// <summary> Gets the request to book and start opening the bike (synonym: booking == renting == mieten). </summary>
		/// <param name="bikeId">Id of the bike to book.</param>
		/// <returns>Request to booking bike.</returns>
		public string BookAvailableAndStartOpening(string bikeId)
			=> "request=booking_request" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				"&state=occupied" +
				GetLockStateParameter(lock_state.unlocking) +
				SmartDevice.GetSmartDeviceParameters() +
				UiIsoLanguageNameParameter;

		/// <summary> Gets the request to book and start opening the bike (synonym: booking == renting == mieten). </summary>
		/// <param name="bikeId">Id of the bike to book.</param>
		/// <returns>Request to booking bike.</returns>
		public string BookReservedAndStartOpening(string bikeId)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				"&state=occupied" +
				GetLockStateParameter(lock_state.unlocking) +
				UiIsoLanguageNameParameter;

		/// <summary> Gets request for returning the bike. </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bikeId">Id of bike to return.</param>
		/// <param name="geolocation">Geolocation of lock when returning bike.</param>
		/// <returns>Request on returning request.</returns>
		public string DoReturn(string bikeId, LocationDto geolocation)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				"&state=available" +
				GetLocationParameters(geolocation) +
				GetLockStateParameter(lock_state.locked) +
				SmartDevice.GetSmartDeviceParameters() +
				GetLog() +
				UiIsoLanguageNameParameter;


		/// <summary> Returns a bike and starts closing. </summary>
		/// <param name="bikeId">Id of the bike to return.</param>
		/// <param name="smartDevice">Provides info about hard and software.</param>
		/// <returns>Response to send to copri.</returns>
		public string ReturnAndStartClosing(string bikeId)
			=> "request=booking_update" +
				GetBikeIdParameter(bikeId) +
				AuthCookieParameter +
				"&state=available" +
				GetLockStateParameter(lock_state.locking) +
				SmartDevice.GetSmartDeviceParameters() +
				UiIsoLanguageNameParameter;

		/// <summary> Gets submit feedback request. </summary>
		/// <param name="bikeId">Id of the bike to return.</param>
		/// <param name="message">General purpose message or error description.</param>
		/// <param name="isBikeBroken">True if bike is broken.</param>
		/// <returns>Submit feedback request.</returns>
		public string DoSubmitFeedback(
			string bikeId,
			int? currentChargeBars = null,
			string message = null,
			bool isBikeBroken = false)
		{
			string GetIsBikeBroken()
				=> isBikeBroken ? "&bike_broken=1" : string.Empty;

			string GetMessage()
				=> !string.IsNullOrEmpty(message) ? $"&message={WebUtility.UrlEncode(message)}" : string.Empty;

			string GetCurrentChargeBars()
				=> currentChargeBars != null ? $"&charge_current_bars={currentChargeBars.Value}" : string.Empty;

			return "request=user_feedback" +
				GetBikeIdParameter(bikeId) +
				GetCurrentChargeBars() +
				GetIsBikeBroken() +
				GetMessage() +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;
		}

		/// <summary>
		/// Gets request for submitting mini survey to copri server.
		/// </summary>
		/// <param name="answers">Collection of answers.</param>
		public string DoSubmitMiniSurvey(IDictionary<string, string> answers)
		{
			// Remove entires which invalid keys or values.
			var validAnsers = answers?.Where(x => !string.IsNullOrEmpty(x.Key?.Trim()) && !string.IsNullOrEmpty(x.Value?.Trim()));

			// Create quersy
			if (validAnsers == null || validAnsers.Count() <= 0)
				return "request=user_minianswer" +
					AuthCookieParameter +
					UiIsoLanguageNameParameter;

			return "request=user_minianswer" +
				$"&{string.Join("&", validAnsers.Select(x => $"{x.Key}={WebUtility.UrlEncode(x.Value)}"))}" +
				AuthCookieParameter +
				UiIsoLanguageNameParameter;
		}

		/// <summary>
		/// Gets bike id parameter.
		/// </summary>
		/// <param name="bikeId">Id of bike.</param>
		/// <returns>bike id parameter in a format which is urlencode invariant.</returns>
		private static string GetBikeIdParameter(string bikeId)
			=> $"&bike={WebUtility.UrlEncode(bikeId)}";

		/// <summary>
		/// Gets parameter holding lock state or null if state is unknown.
		/// </summary>
		/// <param name="lockState">Null or state of lock.</param>
		/// <returns>Lock state in a format which is urlencode invariant.</returns>
		private static string GetLockStateParameter(lock_state? lockState)
			=> lockState.HasValue ? $"&lock_state={lockState}" : string.Empty;

		/// <summary>
		/// Gets the battery level percentage parameter if percentage is not NaN an empty string otherwise.
		/// </summary>
		/// <returns>Gets battery percentage parameters in a format which is urlencode invariant or an empty string if percentage percentge is NaN.</returns>
		private static string GetBatteryPercentageParameters(double batteryPercentage) => !double.IsNaN(batteryPercentage)
			? $"&voltage={batteryPercentage.ToString(CultureInfo.InvariantCulture)}"
			: string.Empty;

		/// <summary>
		/// Gets the version info parameter or an empty string if version info is not available.
		/// </summary>
		/// <param name="versionInfo">Lock version info.</param>
		/// <returns>Version info in a format which is urlencode invariant or empty. </returns>
		private static string GetVersionInfoParameter(IVersionInfo versionInfo) => versionInfo?.FirmwareVersion > 0 || versionInfo?.HardwareVersion > 0 || versionInfo?.LockVersion > 0
			? $"&firmware=HW%20{versionInfo.HardwareVersion}%3BFW%20{versionInfo.FirmwareVersion}%3BLock%20{versionInfo.LockVersion}"
			: string.Empty;

		/// <summary> Gets the geolocation parameter. </summary>
		/// <param name="geolocation">Geolocation or null.</param>
		/// <returns>Empty string if geolocation is null otherwise parameter including latitude, longitude and age in a format which is urlencode invariant.</returns>
		private static string GetLocationParameters(LocationDto geolocation)
		{
			if (geolocation == null)
				return string.Empty;

			if (geolocation.Accuracy == null)
				return $"&gps={geolocation.Latitude.ToString(CultureInfo.InvariantCulture)},{geolocation.Longitude.ToString(CultureInfo.InvariantCulture)}&gps_age={geolocation.Age.TotalSeconds}";

			return $"&gps={geolocation.Latitude.ToString(CultureInfo.InvariantCulture)},{geolocation.Longitude.ToString(CultureInfo.InvariantCulture)}&gps_accuracy={geolocation.Accuracy.Value.ToString(CultureInfo.InvariantCulture)}&gps_age={geolocation.Age.TotalSeconds}";
		}

		/// <summary>
		/// Gets logging entries from serilog.
		/// </summary>
		/// <returns></returns>
		private static string GetLog()
		{
			var messages = string.Join("\n", MemoryStackSink.PopAllMessages());
			return !string.IsNullOrEmpty(messages)
				? "&app_debug=" + WebUtility.UrlEncode(string.Join("\n", messages))
				: string.Empty;
		}
	}
}