/*
 * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
 * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/

using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Net;
using QuantConnect.Api;
using QuantConnect.API;
using QuantConnect.Data.Market;

namespace QuantConnect.Interfaces
{
    /// <summary>
    /// API for QuantConnect.com
    /// </summary>
    [InheritedExport(typeof(IApi))]
    public interface IApi : IDisposable
    {
        /// <summary>
        /// Initialize the control system
        /// </summary>
        void Initialize(int userId, string token, string dataFolder);

        /// <summary>
        /// Create a project with the specified name and language via QuantConnect.com API
        /// </summary>
        /// <param name="name">Project name</param>
        /// <param name="language">Programming language to use</param>
        /// <returns><see cref="ProjectResponse"/> that includes information about the newly created project</returns>
        ProjectResponse CreateProject(string name, Language language);

        /// <summary>
        /// Read in a project from the QuantConnect.com API.
        /// </summary>
        /// <param name="projectId">Project id you own</param>
        /// <returns><see cref="ProjectResponse"/> about a specific project</returns>
        ProjectResponse ReadProject(int projectId);

        /// <summary>
        /// Add a file to a project
        /// </summary>
        /// <param name="projectId">The project to which the file should be added</param>
        /// <param name="name">The name of the new file</param>
        /// <param name="content">The content of the new file</param>
        /// <returns><see cref="ProjectFilesResponse"/> that includes information about the newly created file</returns>
        ProjectFilesResponse AddProjectFile(int projectId, string name, string content);

        /// <summary>
        /// Update the name of a file
        /// </summary>
        /// <param name="projectId">Project id to which the file belongs</param>
        /// <param name="oldFileName">The current name of the file</param>
        /// <param name="newFileName">The new name for the file</param>
        /// <returns><see cref="RestResponse"/> indicating success</returns>
        RestResponse UpdateProjectFileName(int projectId, string oldFileName, string newFileName);

        /// <summary>
        /// Update the contents of a file
        /// </summary>
        /// <param name="projectId">Project id to which the file belongs</param>
        /// <param name="fileName">The name of the file that should be updated</param>
        /// <param name="newFileContents">The new contents of the file</param>
        /// <returns><see cref="RestResponse"/> indicating success</returns>
        RestResponse UpdateProjectFileContent(int projectId, string fileName, string newFileContents);

        /// <summary>
        /// Read a file in a project
        /// </summary>
        /// <param name="projectId">Project id to which the file belongs</param>
        /// <param name="fileName">The name of the file</param>
        /// <returns><see cref="ProjectFilesResponse"/> that includes the file information</returns>
        ProjectFilesResponse ReadProjectFile(int projectId, string fileName);

        /// <summary>
        /// Read all files in a project
        /// </summary>
        /// <param name="projectId">Project id to which the file belongs</param>
        /// <returns><see cref="ProjectFilesResponse"/> that includes the information about all files in the project</returns>
        ProjectFilesResponse ReadProjectFiles(int projectId);

        /// <summary>
        /// Delete a file in a project
        /// </summary>
        /// <param name="projectId">Project id to which the file belongs</param>
        /// <param name="name">The name of the file that should be deleted</param>
        /// <returns><see cref="ProjectFilesResponse"/> that includes the information about all files in the project</returns>
        RestResponse DeleteProjectFile(int projectId, string name);

        /// <summary>
        /// Delete a specific project owned by the user from QuantConnect.com
        /// </summary>
        /// <param name="projectId">Project id we own and wish to delete</param>
        /// <returns>RestResponse indicating success</returns>
        RestResponse DeleteProject(int projectId);

        /// <summary>
        /// Read back a list of all projects on the account for a user.
        /// </summary>
        /// <returns>Container for list of projects</returns>
        ProjectResponse ListProjects();

        /// <summary>
        /// Create a new compile job request for this project id.
        /// </summary>
        /// <param name="projectId">Project id we wish to compile.</param>
        /// <returns>Compile object result</returns>
        Compile CreateCompile(int projectId);

        /// <summary>
        /// Read a compile packet job result.
        /// </summary>
        /// <param name="projectId">Project id we sent for compile</param>
        /// <param name="compileId">Compile id return from the creation request</param>
        /// <returns>Compile object result</returns>
        Compile ReadCompile(int projectId, string compileId);

        /// <summary>
        /// Create a new backtest from a specified projectId and compileId
        /// </summary>
        /// <param name="projectId"></param>
        /// <param name="compileId"></param>
        /// <param name="backtestName"></param>
        /// <returns></returns>
        Backtest CreateBacktest(int projectId, string compileId, string backtestName);

        /// <summary>
        /// Read out the full result of a specific backtest
        /// </summary>
        /// <param name="projectId">Project id for the backtest we'd like to read</param>
        /// <param name="backtestId">Backtest id for the backtest we'd like to read</param>
        /// <returns>Backtest result object</returns>
        Backtest ReadBacktest(int projectId, string backtestId);

        /// <summary>
        /// Update the backtest name
        /// </summary>
        /// <param name="projectId">Project id to update</param>
        /// <param name="backtestId">Backtest id to update</param>
        /// <param name="backtestName">New backtest name to set</param>
        /// <param name="backtestNote">Note attached to the backtest</param>
        /// <returns>Rest response on success</returns>
        RestResponse UpdateBacktest(int projectId, string backtestId, string backtestName = "", string backtestNote = "");

        /// <summary>
        /// Delete a backtest from the specified project and backtestId.
        /// </summary>
        /// <param name="projectId">Project for the backtest we want to delete</param>
        /// <param name="backtestId">Backtest id we want to delete</param>
        /// <returns>RestResponse on success</returns>
        RestResponse DeleteBacktest(int projectId, string backtestId);

        /// <summary>
        /// Get a list of backtests for a specific project id
        /// </summary>
        /// <param name="projectId">Project id to search</param>
        /// <returns>BacktestList container for list of backtests</returns>
        BacktestList ListBacktests(int projectId);

        /// <summary>
        /// Gets the logs of a specific live algorithm
        /// </summary>
        /// <param name="projectId">Project Id of the live running algorithm</param>
        /// <param name="algorithmId">Algorithm Id of the live running algorithm</param>
        /// <param name="startTime">No logs will be returned before this time. Should be in UTC</param>
        /// <param name="endTime">No logs will be returned after this time. Should be in UTC</param>
        /// <returns>List of strings that represent the logs of the algorithm</returns>
        LiveLog ReadLiveLogs(int projectId, string algorithmId, DateTime? startTime = null, DateTime? endTime = null);

        /// <summary>
        /// Gets the link to the downloadable data.
        /// </summary>
        /// <param name="symbol">Symbol of security of which data will be requested.</param>
        /// <param name="resolution">Resolution of data requested.</param>
        /// <param name="date">Date of the data requested.</param>
        /// <returns>Link to the downloadable data.</returns>
        Link ReadDataLink(Symbol symbol, Resolution resolution, DateTime date);

        /// <summary>
        /// Method to download and save the data purchased through QuantConnect
        /// </summary>
        /// <param name="symbol">Symbol of security of which data will be requested.</param>
        /// <param name="resolution">Resolution of data requested.</param>
        /// <param name="date">Date of the data requested.</param>
        /// <returns>A bool indicating whether the data was successfully downloaded or not.</returns>
        bool DownloadData(Symbol symbol, Resolution resolution, DateTime date);

        /// <summary>
        /// Create a new live algorithm for a logged in user.
        /// </summary>
        /// <param name="projectId">Id of the project on QuantConnect</param>
        /// <param name="compileId">Id of the compilation on QuantConnect</param>
        /// <param name="serverType">Type of server instance that will run the algorithm</param>
        /// <param name="baseLiveAlgorithmSettings">Brokerage specific <see cref="BaseLiveAlgorithmSettings">BaseLiveAlgorithmSettings</see>.</param>
        /// <param name="versionId">The version identifier</param>
        /// <returns>Information regarding the new algorithm <see cref="LiveAlgorithm"/></returns>
        LiveAlgorithm CreateLiveAlgorithm(int projectId, string compileId, string serverType, BaseLiveAlgorithmSettings baseLiveAlgorithmSettings, string versionId = "-1");

        /// <summary>
        /// Get a list of live running algorithms for a logged in user.
        /// </summary>
        /// <param name="status">Filter the statuses of the algorithms returned from the api</param>
        /// <param name="startTime">Earliest launched time of the algorithms returned by the Api</param>
        /// <param name="endTime">Latest launched time of the algorithms returned by the Api</param>
        /// <returns>List of live algorithm instances</returns>
        LiveList ListLiveAlgorithms(AlgorithmStatus? status = null, DateTime? startTime = null, DateTime? endTime = null);

        /// <summary>
        /// Read out a live algorithm in the project id specified.
        /// </summary>
        /// <param name="projectId">Project id to read</param>
        /// <param name="deployId">Specific instance id to read</param>
        /// <returns>Live object with the results</returns>
        LiveAlgorithmResults ReadLiveAlgorithm(int projectId, string deployId);

        /// <summary>
        /// Liquidate a live algorithm from the specified project.
        /// </summary>
        /// <param name="projectId">Project for the live instance we want to stop</param>
        /// <returns></returns>
        RestResponse LiquidateLiveAlgorithm(int projectId);

        /// <summary>
        /// Stop a live algorithm from the specified project.
        /// </summary>
        /// <param name="projectId">Project for the live algo we want to delete</param>
        /// <returns></returns>
        RestResponse StopLiveAlgorithm(int projectId);



        //Status StatusRead(int projectId, string algorithmId);
        //RestResponse StatusUpdate(int projectId, string algorithmId, AlgorithmStatus status, string message = "");
        //LogControl LogAllowanceRead();
        //void LogAllowanceUpdate(string backtestId, string url, int length);
        //void StatisticsUpdate(int projectId, string algorithmId, decimal unrealized, decimal fees, decimal netProfit, decimal holdings, decimal equity, decimal netReturn, decimal volume, int trades, double sharpe);
        //void NotifyOwner(int projectId, string algorithmId, string subject, string body);
        //IEnumerable<MarketHoursSegment> MarketHours(int projectId, DateTime time, Symbol symbol);

        /// <summary>
        /// Get the algorithm current status, active or cancelled from the user
        /// </summary>
        /// <param name="algorithmId"></param>
        /// <returns></returns>
        AlgorithmControl GetAlgorithmStatus(string algorithmId);

        /// <summary>
        /// Set the algorithm status from the worker to update the UX e.g. if there was an error.
        /// </summary>
        /// <param name="algorithmId">Algorithm id we're setting.</param>
        /// <param name="status">Status enum of the current worker</param>
        /// <param name="message">Message for the algorithm status event</param>
        void SetAlgorithmStatus(string algorithmId, AlgorithmStatus status, string message = "");

        /// <summary>
        /// Will get the prices for requested symbols
        /// </summary>
        /// <param name="symbols">Symbols for which the price is requested</param>
        /// <returns><see cref="Prices"/></returns>
        PricesList ReadPrices(IEnumerable<Symbol> symbols);

        /// <summary>
        /// Send the statistics to storage for performance tracking.
        /// </summary>
        /// <param name="algorithmId">Identifier for algorithm</param>
        /// <param name="unrealized">Unrealized gainloss</param>
        /// <param name="fees">Total fees</param>
        /// <param name="netProfit">Net profi</param>
        /// <param name="holdings">Algorithm holdings</param>
        /// <param name="equity">Total equity</param>
        /// <param name="netReturn">Algorithm return</param>
        /// <param name="volume">Volume traded</param>
        /// <param name="trades">Total trades since inception</param>
        /// <param name="sharpe">Sharpe ratio since inception</param>
        void SendStatistics(string algorithmId, decimal unrealized, decimal fees, decimal netProfit, decimal holdings, decimal equity, decimal netReturn, decimal volume, int trades, double sharpe);

        /// <summary>
        /// Send an email to the user associated with the specified algorithm id
        /// </summary>
        /// <param name="algorithmId">The algorithm id</param>
        /// <param name="subject">The email subject</param>
        /// <param name="body">The email message body</param>
        void SendUserEmail(string algorithmId, string subject, string body);

        /// <summary>
        /// Gets all split events between the specified times. From and to are inclusive.
        /// </summary>
        /// <param name="from">The first date to get splits for</param>
        /// <param name="to">The last date to get splits for</param>
        /// <returns>A list of all splits in the specified range</returns>
        List<Data.Market.Split> GetSplits(DateTime from, DateTime to);

        /// <summary>
        /// Gets all dividend events between the specified times. From and to are inclusive.
        /// </summary>
        /// <param name="from">The first date to get dividend for</param>
        /// <param name="to">The last date to get dividend for</param>
        /// <returns>A list of all dividend in the specified range</returns>
        List<Data.Market.Dividend> GetDividends(DateTime from, DateTime to);

        /// <summary>
        /// Local implementation for downloading data to algorithms
        /// </summary>
        /// <param name="address">URL to download</param>
        /// <param name="headers">KVP headers</param>
        /// <param name="userName">Username for basic authentication</param>
        /// <param name="password">Password for basic authentication</param>
        /// <returns></returns>
        string Download(string address, IEnumerable<KeyValuePair<string, string>> headers, string userName, string password);
    }
}