using CloudBuilder.Core.DatabaseAccessor;
using CloudBuilder.Core.DatabaseAccessor.Entity;
using CloudBuilder.Core.Extensions;
using CloudBuilder.Core.Service;
using CloudBuilder.Security.Data;
using CloudBuilder.Security.Entity;
using CloudBuilder.Security.Policy;
using CloudBuilder.Security.SearchCriteria;
using CloudBuilder.Security.Utility;
using DocumentFormat.OpenXml.Math;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using System.Diagnostics;
namespace CloudBuilder.Security.Service
{
    public class SecurityFunctionService : ISecurityFunctionService
    {
        private readonly IApplicationService service;

        private IRepository<SecurityFunctionEntity> repository;
        public SecurityFunctionService(IApplicationService service)
        {
            this.service = service;
            repository = service.GetRepository<IRepository<SecurityFunctionEntity>>();
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Find)]
        public SecurityFunctionData FindByKey(string key)
        {
            SecurityFunctionData data = new SecurityFunctionData();
            if (string.IsNullOrEmpty(key)) return data;

            SecurityFunctionEntity function = repository.DetachedEntities.Where(x => x.FunctionName == key).FirstOrDefault();

            if (function == null) return data;

            data.SecurityFunction = new SecurityFunctionDisplayData(function);

            IRepository<SecurityPermissionFunctionMapEntity> repositoryMap = repository.GetRepository<IRepository<SecurityPermissionFunctionMapEntity>>();

            SecurityPermissionFunctionMapEntity map = repositoryMap.Entities.Where(x => x.FunctionName == key).FirstOrDefault();
            if (map != null) data.SecurityFunction.PermissionName = map.PermissionName;

            data.SecurityFunctionMapParents = repository.GetRepository<IRepository<SecurityFunctionMapViewEntity>>().DetachedEntities.Where(x => x.SonFunctionName == key).OrderBy(x => x.Orderby).ToArray();
            data.SecurityFunctionMapSons = repository.GetRepository<IRepository<SecurityFunctionMapViewEntity>>().DetachedEntities.Where(x => x.ParentFunctionName == key).OrderBy(x => x.Orderby).ToArray();

            return data;
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Find)]
        public SecurityFunctionResultData FindBySearchCriteria(SecurityFunctionSearchCriteria criteria)
        {
            SecurityFunctionResultData data = new SecurityFunctionResultData();
            SecurityFunctionEntity[] list = null;

            int count = 0;

            string sqlWhere = null;

            if (criteria.Filter != null && criteria.Filter.Length > 0)
            {
                sqlWhere = SearchFilter.ComposeWhereClause(criteria.Filter);
            }

            SecurityFunctionEntity entity = SecurityFunctionEntity.GetInstance();
            string sql = entity.GetSelectTopFrom(criteria.limit, criteria.page, criteria.orderby.StringToDbField(), criteria.orderbytag, sqlWhere);

            string err = null;
            try
            {
                list = repository.FromSql(sql).ToArray();
            }
            catch (System.Exception ex)
            {
                err = ex.Message;
            }


            if (list != null && list.Length > 0)
            {
                sql = entity.GetSelectCountFrom(sqlWhere);
                count = (int)repository.ExecuteScalar(sql);

                data.SecurityFunctionDisplayDatas = list.Select(x => new SecurityFunctionDisplayData(x)).ToArray();
            }
            else
            {
                data.SecurityFunctionDisplayDatas = null;
            }

            data.Limit = criteria.limit;
            data.Page = criteria.page;

            data.Total = count;
            //data.Sql = sql;
            data.ErrorMessage = err;
            return data;
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Print)]
        public dynamic PrintBySearchCriteria(SecurityFunctionSearchCriteria criteria)
        {
            throw new NotImplementedException();
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Insert)]
        [UnitOfWork]
        public SecurityFunctionData Insert(SecurityFunctionData data)
        {
            SecurityFunctionEntity securityFunction = repository.DetachedEntities.Where(x => x.FunctionName == data.SecurityFunction.FunctionName).FirstOrDefault();
            if (securityFunction != null)
            {
                throw new ValidatedException("记录已存在.");
            }

            Validate(data.SecurityFunction);

            securityFunction = new SecurityFunctionEntity();
            ObjectCopyHelper.Copy(data.SecurityFunction, securityFunction);

            repository.InsertNow(securityFunction);

            SaveFunctionPermissionMap(data.SecurityFunction.FunctionName, data.SecurityFunction.PermissionName);
            SaveParentMaps(securityFunction.FunctionName, data.SecurityFunctionMapParents);
            SaveSonMaps(securityFunction.FunctionName, data.SecurityFunctionMapSons);

            return FindByKey(data.SecurityFunction.FunctionName);
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Update)]
        [UnitOfWork]
        public SecurityFunctionData Update(SecurityFunctionData data)
        {
            SecurityFunctionEntity securityFunction = repository.DetachedEntities.Where(x => x.FunctionName == data.SecurityFunction.FunctionName).FirstOrDefault();
            if (securityFunction == null)
            {
                throw new ValidatedException("记录不存在.");
            }

            Validate(data.SecurityFunction);

            ObjectCopyHelper.Copy(data.SecurityFunction, securityFunction);

            repository.UpdateNow(securityFunction);

            SaveFunctionPermissionMap(data.SecurityFunction.FunctionName, data.SecurityFunction.PermissionName);

            SaveParentMaps(securityFunction.FunctionName, data.SecurityFunctionMapParents);

            SaveSonMaps(securityFunction.FunctionName, data.SecurityFunctionMapSons);

            return FindByKey(data.SecurityFunction.FunctionName);
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Delete)]
        [UnitOfWork]
        public void Delete(string key)
        {
            SecurityFunctionEntity securityFunction = repository.DetachedEntities.Where(x => x.FunctionName == key).FirstOrDefault();
            if (securityFunction == null)
            {
                throw new ValidatedException("记录不存在.");
            }

            repository.DeleteNow(securityFunction);

            IRepository<SecurityFunctionMapViewEntity> repositoryMapView = repository.GetRepository<IRepository<SecurityFunctionMapViewEntity>>();
            IRepository<SecurityFunctionMapEntity> repositoryMap = repository.GetRepository<IRepository<SecurityFunctionMapEntity>>();


            SecurityFunctionMapViewEntity[] olds = repositoryMapView.Entities.Where(x => x.ParentFunctionName == key || x.SonFunctionName == key).ToArray();
            if (olds != null && olds.Length > 0)
            {
                foreach (SecurityFunctionMapViewEntity old in olds)
                {
                    repositoryMap.DeleteNow(new SecurityFunctionMapEntity() { FunctionNameSon = old.SonFunctionName, FunctionNameParent = old.ParentFunctionName });
                }
            }
        }

        [PermissionOperate(name: SecurityPermissionPolicy.SecurityFunction, operate: Operate.Delete)]
        [UnitOfWork]
        public void Deletes(string[] keys)
        {
            foreach (string key in keys)
            {
                Delete(key);
            }
        }

        [AllowAnonymous]
        public SecurityFunctionEntity FindByFunctionName(string functionName)
        {
            return repository.DetachedEntities.Where(x => x.FunctionName == functionName || x.PageName == functionName).FirstOrDefault()!;
        }

        [AllowAnonymous]
        public SecurityFunctionDisplayData[] FindMenus()
        {
            SecurityFunctionEntity[] entities = repository.DetachedEntities.Where(x => x.FunctionIndc == YesNoPolicy.YES && x.PageUrl != null && x.PageUrl.Length > 0).ToArray();

            SecurityPermissionFunctionMapEntity[] permissions = service.GetRepository<IRepository<SecurityPermissionFunctionMapEntity>>().DetachedEntities.ToArray();

            var q = from e in entities
                    join p in permissions on e.FunctionName equals p.FunctionName
                    select new SecurityFunctionDisplayData(e) { PermissionName = p.PermissionName };

            return q.ToArray();
        }

        private void Validate(SecurityFunctionDisplayData securityFunctionDto)
        {
            List<SysTableSchemaViewEntity> sysTableSchemas = service.ServiceProvider.GetRequiredService<ISysTableSchemaViewService>().FindByTableName(SecurityFunctionEntity.DB_NAME_SECURITY_FUNCTION);
            ValidateHelper.ValidateString(securityFunctionDto, sysTableSchemas.ToArray());
        }

        private void SaveFunctionPermissionMap(string functionName, string permissionName)
        {
            IRepository<SecurityPermissionFunctionMapEntity> repositoryMap = repository.GetRepository<IRepository<SecurityPermissionFunctionMapEntity>>();

            SecurityPermissionFunctionMapEntity[] olds = repositoryMap.Entities.Where(x => x.FunctionName == functionName).ToArray();

            if (olds != null && olds.Length > 0)
            {
                foreach (SecurityPermissionFunctionMapEntity old in olds)
                {
                    repositoryMap.DeleteNow(old);
                }
            }

            if (string.IsNullOrEmpty(permissionName)) return;

            SecurityPermissionFunctionMapEntity map = new SecurityPermissionFunctionMapEntity();
            map.FunctionName = functionName;
            map.PermissionName = permissionName;
            repositoryMap.InsertNow(map);
        }

        private void SaveParentMaps(string functionName, SecurityFunctionMapViewEntity[] maps)
        {
            IRepository<SecurityFunctionMapViewEntity> repositoryMapView = repository.GetRepository<IRepository<SecurityFunctionMapViewEntity>>();
            IRepository<SecurityFunctionMapEntity> repositoryMap = repository.GetRepository<IRepository<SecurityFunctionMapEntity>>();
            SecurityFunctionMapViewEntity[] olds = repositoryMapView.Entities.Where(x => x.SonFunctionName == functionName).ToArray();
            if (olds != null && olds.Length > 0)
            {
                foreach (SecurityFunctionMapViewEntity old in olds)
                {
                    repositoryMap.DeleteNow(new SecurityFunctionMapEntity() { FunctionNameSon = old.SonFunctionName, FunctionNameParent = old.ParentFunctionName });
                }
            }

            if (maps == null || maps.Length == 0) return;

            int maxOrderBy = 0;
            foreach (SecurityFunctionMapViewEntity map in maps)
            {
                SecurityFunctionMapViewEntity[] oldMaps = repositoryMapView.Entities.Where(x => x.ParentFunctionName == map.ParentFunctionName).ToArray();

                if (oldMaps != null && oldMaps.Count() > 0) maxOrderBy = oldMaps.Max(x => x.Orderby);

                repositoryMap.InsertNow(new SecurityFunctionMapEntity()
                {
                    FunctionNameSon = functionName,
                    FunctionNameParent = map.ParentFunctionName,
                    Orderby = oldMaps == null ? 1 : maxOrderBy + 1
                });
            }

        }

        private void SaveSonMaps(string functionName, SecurityFunctionMapViewEntity[] maps)
        {
            IRepository<SecurityFunctionMapViewEntity> repositoryMapView = repository.GetRepository<IRepository<SecurityFunctionMapViewEntity>>();
            IRepository<SecurityFunctionMapEntity> repositoryMap = repository.GetRepository<IRepository<SecurityFunctionMapEntity>>();

            SecurityFunctionMapViewEntity[] olds = repositoryMapView.Entities.Where(x => x.ParentFunctionName == functionName).ToArray();
            if (olds != null && olds.Length > 0)
            {
                foreach (SecurityFunctionMapViewEntity old in olds)
                {
                    repositoryMap.DeleteNow(new SecurityFunctionMapEntity() { FunctionNameSon = old.SonFunctionName, FunctionNameParent = old.ParentFunctionName });
                }
            }

            if (maps == null || maps.Length == 0) return;
            int i = 1;
            foreach (SecurityFunctionMapViewEntity map in maps.OrderBy(x => x.Orderby).ToArray())
            {
                repositoryMap.InsertNow(new SecurityFunctionMapEntity()
                {
                    FunctionNameSon = map.SonFunctionName,
                    FunctionNameParent = functionName,
                    Orderby = i++
                });
            }
        }

    }
}