using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using xCommons.Configurations;
using xCommons.Controllers;
using xCommons.Extensions;
using xCommons.Providers;
using xModels.Interfaces;
using xExceptions.Constants;
using xModels.Base;
using xModels.Dtos;
using xDataService.Interfaces;

namespace xDataService.Controllers {
    public abstract class XBaseEntityController<TEntity, TKey> : XBaseController, IXEntityControllerActions<TEntity, TKey>
        where TEntity : XBaseEntity<TKey> {
            public readonly IXBaseRepository<TEntity, TKey> repository;

            protected XBaseEntityController (
                ILogger logger,
                XAppConfiguration appConfiguration,
                XValidationProvider validationProvider,
                IXBaseRepository<TEntity, TKey> repository
            ) : base (
                logger,
                appConfiguration,
                validationProvider
            ) {
                //
                this.repository = repository;
            }

            //
            #region Interface Implementations ...
            //
            #region Retrieve ...
            [HttpGet ("{id}")]
            public virtual async Task<ActionResult<TEntity>> Get (
                [FromRoute] TKey id, [FromQuery] bool ignoreSoftDeleteds = true, [FromQuery] bool containsDetail = false
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    ValidationProvider.NotNull (id);

                    //
                    // Get Result ...
                    var result = await repository
                        .GetAsync (
                            id,
                            ignoreSoftDeleteds : ignoreSoftDeleteds,
                            containsDetail : containsDetail
                        );

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

            [HttpGet]
            public virtual async Task<ActionResult<IEnumerable<TEntity>>> GetAll (
                [FromQuery] bool ignoreSoftDeleteds = true, [FromQuery] bool containsDetail = false
            ) {
                //
                try {
                    //
                    // Get Result ...
                    var result = await repository
                        .GetAllAsync (
                            ignoreSoftDeleteds: ignoreSoftDeleteds,
                            containsDetail: containsDetail
                        );

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

            [HttpGet ("FindOne/{query}")]
            public virtual async Task<ActionResult<TEntity>> FindOne (
                [FromRoute] string query, [FromQuery] bool ignoreSoftDeleteds = true, [FromQuery] bool containsDetail = false
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    ValidationProvider.NotEmpty (query);

                    //
                    // Get Result ...
                    var result = await repository
                        .FindOneAsync (t =>
                            t.PropValuesContains (query),
                            ignoreSoftDeleteds : ignoreSoftDeleteds,
                            containsDetail : containsDetail
                        );

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

            [HttpGet ("FindMany/{query}")]
            public virtual async Task<ActionResult<IEnumerable<TEntity>>> FindMany (
                [FromRoute] string query, [FromQuery] bool ignoreSoftDeleteds = true, [FromQuery] bool containsDetail = false
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    ValidationProvider.NotEmpty (query);

                    //
                    // Get Result ...
                    var result = await repository
                        .FindManyAsync (t =>
                            t.PropValuesContains (query),
                            ignoreSoftDeleteds : ignoreSoftDeleteds,
                            containsDetail : containsDetail
                        );

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

            [HttpGet ("Query")]
            public virtual async Task<ActionResult<XQueryResult<TEntity>>> Query (
                [FromQuery] XQuery query, [FromQuery] bool ignoreSoftDeleteds = true
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    ValidationProvider.NotNull (query);

                    //
                    // Get Result ...
                    var result = await repository
                        .QueryAsync (
                            query,
                            ignoreSoftDeleteds : ignoreSoftDeleteds
                        );

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

            //
            // TODO: Fix this ...
            // [HttpGet ("RequestPage")]
            // public virtual async Task<ActionResult<XPageResponse<TEntity>>> RequestPage (
            //     [FromQuery] XPageRequest request, [FromQuery] bool ignoreSoftDeleteds = true, [FromQuery] bool containsDetail = false
            // ) {
            //     //
            //     try {
            //         //
            //         // Validate Args ...
            //         ValidationProvider.NotNull (request);

            //         //
            //         // Get Result ...
            //         var result = await repository
            //             .RequestPageAsync (
            //                 request,
            //                 ignoreSoftDeleteds : ignoreSoftDeleteds,
            //                 containsDetail : containsDetail
            //             );

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

            //
            #region Add ...
            [HttpPost]
            public virtual async Task<ActionResult<TEntity>> Add (
                [FromBody] TEntity item
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    if (!ModelState.IsValid) {
                        XException.InvalidArgs.Throw ();
                    }
                    ValidationProvider.NotNull (item);

                    //
                    // Get Result ...
                    var result = await repository
                        .AddAsync (
                            item,
                            saveChanges : true
                        );

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

            [HttpPost ("AddOrUpdate")]
            public virtual async Task<ActionResult<TEntity>> AddOrUpdate (
                [FromBody] TEntity item
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    if (!ModelState.IsValid) {
                        XException.InvalidArgs.Throw ();
                    }
                    ValidationProvider.NotNull (item);

                    //
                    // Get Result ...
                    var result = await repository
                        .AddOrUpdateAsync (
                            item,
                            saveChanges : true
                        );

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

            [HttpPost ("AddMany")]
            public virtual async Task<ActionResult> AddMany (
                [FromBody] XBaseRangeRequest<TEntity> request
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    if (!ModelState.IsValid) {
                        XException.InvalidArgs.Throw ();
                    }
                    await ValidationProvider
                        .GroupValidationBuilder ()
                        .AddNotNull (request)
                        .AddNotZeroChilds (request.Items)
                        .ValidateGroupAsync ();

                    //
                    // Get Result ...
                    await repository
                        .AddRangeAsync (
                            request.Items,
                            saveChanges : true
                        );

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

            //
            #region Update ...
            [HttpPut ("{id}")]
            public virtual async Task<ActionResult<TEntity>> Update (
                [FromRoute] TKey id, [FromBody] TEntity item
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    if (!ModelState.IsValid) {
                        XException.InvalidArgs.Throw ();
                    }
                    await ValidationProvider
                        .GroupValidationBuilder ()
                        .AddNotNull (id, item)
                        .ValidateGroupAsync ();

                    //
                    // Get Result ...
                    var result = await repository
                        .UpdateAsync (
                            id,
                            item,
                            saveChanges : true
                        );

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

            [HttpPost ("UpdateMany")]
            public virtual async Task<ActionResult<bool>> UpdateMany (
                [FromBody] XBaseRangeRequest<TEntity> request
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    if (!ModelState.IsValid) {
                        XException.InvalidArgs.Throw ();
                    }
                    await ValidationProvider
                        .GroupValidationBuilder ()
                        .AddNotNull (request)
                        .AddNotZeroChilds (request.Items)
                        .ValidateGroupAsync ();

                    //
                    // Get Result ...
                    var result = await repository
                        .UpdateRangeAsync (
                            request.Items,
                            saveChanges : true
                        );

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

            //
            #region Exists ...
            [HttpGet ("{id}/IsExists")]
            public virtual async Task<ActionResult<bool>> IsExists (
                [FromRoute] TKey id, [FromQuery] bool ignoreSoftDeleteds = true
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    ValidationProvider.NotNull (id);

                    //
                    // Get Result ...
                    var result = await repository
                        .IsExistsAsync (
                            id,
                            ignoreSoftDeleteds : ignoreSoftDeleteds
                        );

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

            //
            #region Remove ...
            [HttpDelete ("{id}")]
            public virtual async Task<ActionResult<TEntity>> Remove (
                [FromRoute] TKey id,
                bool softDelete = true
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    ValidationProvider.NotNull (id);

                    //
                    // Get Result ...
                    var result = await repository
                        .RemoveAsync (
                            id,
                            saveChanges : true,
                            softDelete : softDelete
                        );

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

            [HttpPost ("RemoveMany")]
            public virtual async Task<ActionResult> RemoveMany (
                [FromBody] XBaseRangeRequest<TEntity> request,
                bool softDelete = true
            ) {
                //
                try {
                    //
                    // Validate Args ...
                    await ValidationProvider
                        .GroupValidationBuilder ()
                        .AddNotNull (request)
                        .AddNotZeroChilds (request.Items)
                        .ValidateGroupAsync ();

                    //
                    // Get Result ...
                    await repository
                        .RemoveRangeAsync (
                            request.Items,
                            saveChanges : true,
                            softDelete : softDelete
                        );

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