using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using xIdentityHelper;
using xCommons.Attributes;
using xCommons.Extensions;
using xIdentityModels.Dtos;
using xIdentityModels.Models;
using xModels.Dtos;
using static IdentityServer4.IdentityServerConstants;

namespace xIds.Controllers
{
    public partial class AccountController
    {
        //
        #region Retrieve Actions ...
        /// <summary>
        /// Retrieve User Names based on UserIds
        /// </summary>
        /// <param name="ids">a comma seperated list of UserIds</param>
        /// <returns>a collection of UserNames</returns>
        [HttpGet("Profile/{ids}/GetNames")]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<IEnumerable<string>>> GetNames(
            [FromRoute] string ids
        )
        {
            //
            // Do Action ...
            try
            {
                //
                ValidationProvider.NotEmpty(ids);

                //
                var xIdList = ids.ParseListString<string>();
                var result = await IdentityManager.GetUserNamesAsync(
                    xIdList
                );

                //
                // Return Result
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// get user ids and retrieve corresponding user names
        /// </summary>
        /// <param name="model">an instance of <see>XUserNameIdRequest</see> which represent required UserIds collection</param>
        /// <returns>a collection of <see>XUserNameIdResponse</see> instance</returns>
        [HttpPost("Profile/GetNameIds")]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<IEnumerable<XUserNameIdResponse>>> GetNameIds(
            [FromBody] XUserNameIdRequest model
        )
        {
            //
            // Do Action ...
            try
            {
                //
                ValidationProvider.NotNull(model);

                //
                var result = await IdentityManager.GetUserNameIdsAsync(
                    model
                );

                //
                // Return Result
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Get Profile Object of Specific User 
        /// </summary>
        /// <param name="userSelectByParam">specifies which user profile must be retrieved</param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [HttpGet("Profile/{userSelectByParam?}")]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<XUserProfileDto>> GetProfile(
            [FromRoute] string userSelectByParam = ""
        )
        {
            //
            // Do Action ...
            try
            {
                //
                if (userSelectByParam.IsNullOrEmpty())
                {
                    userSelectByParam = User.Identity.Name;
                }

                //
                var result = await IdentityManager
                    .GetUserProfileAsync(
                        userSelectByParam,
                        User.Identity.Name
                    );

                //
                // Return Result
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Query Users 
        /// for specifiy users role for query user 'role: string' and 'forceRole: boolean' in header
        /// </summary>
        /// <param name="query">how to filter results based on <see>XQuery</see> structure</param>
        /// <param name="role">an string which represent user role</param>
        /// <param name="forceRole">if it's true the user must has exact role, otherwise top level users also listed</param>
        /// <returns>an instance of <see>XQueryResult</see> of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [HttpGet("Profile/Query")]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledAdmin)]
        [Authorize(Policy = XPolicies.EnabledAgent)]
        public async Task<ActionResult<XQueryResult<XUserProfileDto>>> QueryProfiles(
            [FromQuery] XQuery query, [FromHeader] string role, [FromHeader] bool forceRole = false
        )
        {
            //
            // Do Action ...
            try
            {
                //
                var userId = User.Identity.Name;

                //
                var result = new XQueryResult<XUserProfileDto>();
                if (role.IsNullOrEmpty())
                {
                    //
                    result = await IdentityManager.QueryUsers(
                        userId,
                        query
                    );
                }
                else
                {
                    //
                    result = await IdentityManager.QueryInRoleUsers(
                        userId,
                        role,
                        query,
                        forceRole
                    );
                }

                //
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var exception = GetExceptionActionResult(ex);
                return exception;
            }
        }

        /// <summary>
        /// Query Specified User's Profile Images
        /// </summary>
        /// <param name="userSelectByParam">determine's which user profile must be retrieved</param>
        /// <param name="query">how to filter results based on <see>XQuery</see> structure</param>
        /// <returns>an instance of <see>XQueryResult</see> of <see>XProfileImage</see></returns>
        [RequireXPowered]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        [Authorize(Policy = XPolicies.EnabledAdmin)]
        [HttpGet("Profile/Avatars/Query/{userSelectByParam?}")]
        public async Task<ActionResult<XQueryResult<XProfileImageDto>>> QueryAvatars(
            [FromQuery] XQuery query, [FromRoute] string userSelectByParam = null
        )
        {
            //
            // Do Action ...
            try
            {
                //
                if (userSelectByParam.IsNullOrEmpty())
                {
                    userSelectByParam = User.Identity.Name;
                }

                //
                var result = await IdentityManager.QueryAvatars(
                    userSelectByParam,
                    query
                );

                //
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var exception = GetExceptionActionResult(ex);
                return exception;
            }
        }
        #endregion

        //
        #region Update Actions ...
        /// <summary>
        /// Update User Profile based on XProfileUpdateRequest (FirstName/LastName/DateOfBirth)
        /// </summary>
        /// <param name="model">user update info, an instance of <see>XProfileUpdateRequest</see></param>
        /// <param name="userSelectByParam">determine's which user profile must be retrieved</param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        [HttpPost("Profile/Update/{userSelectByParam?}")]
        public async Task<ActionResult<XUserProfileDto>> UpdateProfile(
            [FromBody] XProfileUpdateRequest model, [FromRoute] string userSelectByParam = null
        )
        {
            //
            // Do Action ...
            try
            {
                //
                if (userSelectByParam.IsNullOrEmpty())
                {
                    userSelectByParam = User.Identity.Name;
                }

                //
                var result = await IdentityManager.ProfileUpdateAsync(
                    userSelectByParam,
                    User.Identity.Name,
                    model
                );

                //
                // Return Result
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Update a User Profile based on XProfileUpdateRequest Full
        /// </summary>
        /// <param name="model">user update info, an instance of <see>XProfileUpdateRequest</see></param>
        /// <param name="userSelectByParam">determine's which user profile must be retrieved</param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [Authorize(Policy = LocalApi.PolicyName)]
        [HttpPost("Profile/{userSelectByParam?}")]
        [Authorize(Policy = XPolicies.EnabledAdminOrAgent)]
        public async Task<ActionResult<XUserProfileDto>> FullUpdateProfile(
            [FromBody] XProfileUpdateRequest model, [FromRoute] string userSelectByParam = null
        )
        {
            //
            // Do Action ...
            try
            {
                //
                if (userSelectByParam.IsNullOrEmpty())
                {
                    userSelectByParam = User.Identity.Name;
                }

                //
                var result = await IdentityManager.FullProfileUpdateAsync(
                    userSelectByParam,
                    User.Identity.Name,
                    model
                );

                //
                // Return Result
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }
        #endregion

        //
        #region Avatar Actions ...
        /// <summary>
        /// Add a New Profile Image
        /// </summary>
        /// <param name="file">an specific File to upload, <see>IFormFile</see></param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [HttpPost("Profile/Avatar")]
        [RequestSizeLimit(966_367_641)]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<XUserProfileDto>> AddAvatar(
            [FromForm] IFormFile file
        )
        {
            //
            // Do Action ...
            try
            {
                //
                // Validate Args ...
                ValidationProvider.NotNull(file);

                //
                // Get Request ...
                var result = await IdentityManager
                    .AddAvatar(
                        User.Identity.Name,
                        file
                    );

                //
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var exResult = GetExceptionActionResult(ex);
                return exResult;
            }
        }

        /// <summary>
        /// Add a New Collection of Profile Images
        /// </summary>
        /// <param name="files">a collection of Files to upload, <see>IFormFileCollection</see></param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [HttpPost("Profile/Avatars")]
        [RequestSizeLimit(966_367_641)]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<XUserProfileDto>> AddAvatars(
            [FromForm] IFormFileCollection files
        )
        {
            //
            // Do Action ...
            try
            {
                //
                // Validate Args ...
                ValidationProvider.NotZeroChilds(files);

                //
                // Get Request ...
                var result = await IdentityManager.AddAvatars(
                    User.Identity.Name,
                    files
                );

                //
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var exResult = GetExceptionActionResult(ex);
                return exResult;
            }
        }

        /// <summary>
        /// Remove Profile Images
        /// </summary>
        /// <param name="ids">a comma seperated list of avatarIds to remove</param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [Authorize(Policy = XPolicies.User)]
        [HttpDelete("Profile/Avatars/{ids}")]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<XUserProfileDto>> RemoveAvatars(
            [FromRoute] string ids
        )
        {
            //
            // Do Action ...
            try
            {
                //
                ValidationProvider.NotEmpty(ids);
                var idList = ids.Split(",");
                var idCollection = new Collection<int>();

                //
                foreach (var s in idList)
                {
                    idCollection.Add(int.Parse(s));
                }

                //
                // Get Request ...
                var result = await IdentityManager
                    .RemoveAvatar(
                        User.Identity.Name,
                        idCollection.ToArray()
                    );

                //
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// set Specified Profile Image as Avatar
        /// </summary>
        /// <param name="id">an integer which reperesent AvatarId to set as current Avatar</param>
        /// <returns>an instance of <see>XUserProfileDto</see></returns>
        [RequireXPowered]
        [HttpPost("Profile/Avatars/{id:int}/Set")]
        [Authorize(Policy = XPolicies.User)]
        [Authorize(Policy = LocalApi.PolicyName)]
        [Authorize(Policy = XPolicies.EnabledUser)]
        public async Task<ActionResult<XUserProfileDto>> SetAvatar(
            [FromRoute] int id
        )
        {
            //
            // Do Action ...
            try
            {
                //
                var result = await IdentityManager
                    .SetAvatar(
                        User.Identity.Name,
                        id
                    );

                //
                return Ok(result
                    .ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var exception = GetExceptionActionResult(ex);
                return exception;
            }
        }
        #endregion
    }
}