using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using AyaNova.Util;
using AyaNova.Api.ControllerHelpers;
using AyaNova.Models;

namespace AyaNova.Biz
{
    internal class WorkOrderItemPriorityBiz : BizObject, ISearchAbleObject
    {
        internal WorkOrderItemPriorityBiz(AyContext dbcontext, long currentUserId, long userTranslationId, AuthorizationRoles UserRoles)
        {
            ct = dbcontext;
            UserId = currentUserId;
            UserTranslationId = userTranslationId;
            CurrentUserRoles = UserRoles;
            BizType = AyaType.WorkOrderItemPriority;
        }

        internal static WorkOrderItemPriorityBiz GetBiz(AyContext ct, Microsoft.AspNetCore.Http.HttpContext httpContext = null)
        {
            if (httpContext != null)
                return new WorkOrderItemPriorityBiz(ct, UserIdFromContext.Id(httpContext.Items), UserTranslationIdFromContext.Id(httpContext.Items), UserRolesFromContext.Roles(httpContext.Items));
            else
                return new WorkOrderItemPriorityBiz(ct, 1, ServerBootConfig.AYANOVA_DEFAULT_TRANSLATION_ID, AuthorizationRoles.BizAdminFull);
        }

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //EXISTS 
        internal async Task<bool> ExistsAsync(long id)
        {
            return await ct.WorkOrderItemPriority.AnyAsync(z => z.Id == id);
        }

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //CREATE   
        //
        internal async Task<WorkOrderItemPriority> CreateAsync(WorkOrderItemPriority newObject)
        {
            await ValidateAsync(newObject, null);
            if (HasErrors)
                return null;
            else
            {
                await ct.WorkOrderItemPriority.AddAsync(newObject);
                await ct.SaveChangesAsync();
                await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserId, newObject.Id, BizType, AyaEvent.Created), ct);
                await SearchIndexAsync(newObject, true);
                return newObject;
            }
        }

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //DUPLICATE
        //
        internal async Task<WorkOrderItemPriority> DuplicateAsync(long id)
        {
            var dbObject = await GetAsync(id, false);
            if (dbObject == null)
            {
                AddError(ApiErrorCode.NOT_FOUND, "id");
                return null;
            }
            WorkOrderItemPriority newObject = new WorkOrderItemPriority();
            CopyObject.Copy(dbObject, newObject);
            string newUniqueName = string.Empty;
            bool NotUnique = true;
            long l = 1;
            do
            {
                newUniqueName = Util.StringUtil.UniqueNameBuilder(dbObject.Name, l++, 255);
                NotUnique = await ct.WorkOrderItemPriority.AnyAsync(m => m.Name == newUniqueName);
            } while (NotUnique);
            newObject.Name = newUniqueName;
            newObject.Id = 0;
            newObject.Concurrency = 0;
            await ct.WorkOrderItemPriority.AddAsync(newObject);
            await ct.SaveChangesAsync();
            await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserId, newObject.Id, BizType, AyaEvent.Created), ct);
            await SearchIndexAsync(newObject, true);
            return newObject;
        }

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //GET 
        //      
        internal async Task<WorkOrderItemPriority> GetAsync(long id, bool logTheGetEvent = true)
        {
            var ret = await ct.WorkOrderItemPriority.AsNoTracking().SingleOrDefaultAsync(m => m.Id == id);
            if (logTheGetEvent && ret != null)
                await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserId, id, BizType, AyaEvent.Retrieved), ct);
            return ret;
        }

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //UPDATE
        //
        internal async Task<WorkOrderItemPriority> PutAsync(WorkOrderItemPriority putObject)
        {
            var dbObject = await GetAsync(putObject.Id, false);
            if (dbObject == null)
            {
                AddError(ApiErrorCode.NOT_FOUND, "id");
                return null;
            }
            if (dbObject.Concurrency != putObject.Concurrency)
            {
                AddError(ApiErrorCode.CONCURRENCY_CONFLICT);
                return null;
            }


            await ValidateAsync(putObject, dbObject);
            if (HasErrors) return null;
            ct.Replace(dbObject, putObject);
            try
            {
                await ct.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!await ExistsAsync(putObject.Id))
                    AddError(ApiErrorCode.NOT_FOUND);
                else
                    AddError(ApiErrorCode.CONCURRENCY_CONFLICT);
                return null;
            }
            await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserId, dbObject.Id, BizType, AyaEvent.Modified), ct);
            await SearchIndexAsync(putObject, false);
            return putObject;
        }

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //DELETE
        //
        internal async Task<bool> DeleteAsync(long id)
        {
            using (var transaction = await ct.Database.BeginTransactionAsync())
            {
                try
                {
                    var dbObject = await GetAsync(id, false);
                    if (dbObject == null)
                    {
                        AddError(ApiErrorCode.NOT_FOUND);
                        return false;
                    }
                    await ValidateCanDeleteAsync(dbObject);
                    if (HasErrors)
                        return false;
                    ct.WorkOrderItemPriority.Remove(dbObject);
                    await ct.SaveChangesAsync();

                    //Log event 
                    await EventLogProcessor.DeleteObjectLogAsync(UserId, BizType, dbObject.Id, dbObject.Name, ct);
                    await Search.ProcessDeletedObjectKeywordsAsync(dbObject.Id, BizType, ct);
                    await FileUtil.DeleteAttachmentsForObjectAsync(BizType, dbObject.Id, ct);
                    await transaction.CommitAsync();
                }
                catch
                {
                    //Just re-throw for now, let exception handler deal, but in future may want to deal with this more here
                    throw;
                }
                return true;
            }
        }



        ////////////////////////////////////////////////////////////////////////////////////////////////
        //SEARCH
        //
        private async Task SearchIndexAsync(WorkOrderItemPriority obj, bool isNew)
        {
            var SearchParams = new Search.SearchIndexProcessObjectParameters(UserTranslationId, obj.Id, BizType);
            DigestSearchText(obj, SearchParams);
            if (isNew)
                await Search.ProcessNewObjectKeywordsAsync(SearchParams);
            else
                await Search.ProcessUpdatedObjectKeywordsAsync(SearchParams);
        }

        public async Task<Search.SearchIndexProcessObjectParameters> GetSearchResultSummary(long id)
        {
            var obj = await GetAsync(id, false);
            var SearchParams = new Search.SearchIndexProcessObjectParameters();
            DigestSearchText(obj, SearchParams);
            return SearchParams;
        }

        public void DigestSearchText(WorkOrderItemPriority obj, Search.SearchIndexProcessObjectParameters searchParams)
        {
            if (obj != null)
                searchParams.AddText(obj.Name);
        }



        ////////////////////////////////////////////////////////////////////////////////////////////////
        //VALIDATION
        //

        private async Task ValidateAsync(WorkOrderItemPriority proposedObj, WorkOrderItemPriority currentObj)
        {

            bool isNew = currentObj == null;

            //Name required
            if (string.IsNullOrWhiteSpace(proposedObj.Name))
                AddError(ApiErrorCode.VALIDATION_REQUIRED, "Name");



            //If name is otherwise OK, check that name is unique
            if (!PropertyHasErrors("Name"))
            {
                //Use Any command is efficient way to check existance, it doesn't return the record, just a true or false
                if (await ct.WorkOrderItemPriority.AnyAsync(m => m.Name == proposedObj.Name && m.Id != proposedObj.Id))
                {
                    AddError(ApiErrorCode.VALIDATION_NOT_UNIQUE, "Name");
                }
            }

        }

        private async Task ValidateCanDeleteAsync(WorkOrderItemPriority inObj)
        {
            //MIGRATE_OUTSTANDING - check workorder records once wo is coded here
            await Task.CompletedTask;
            //Referential integrity 
            //FOREIGN KEY CHECKS          
            if (await ct.WorkOrderItem.AnyAsync(m => m.WorkorderItemPriorityId == inObj.Id))
                AddError(ApiErrorCode.VALIDATION_REFERENTIAL_INTEGRITY, "generalerror", await Translate("WorkOrderItem"));
        }







        /////////////////////////////////////////////////////////////////////

    }//eoc


}//eons