using CloudBuilder.Core.Authorization;
using CloudBuilder.Core.DatabaseAccessor.Entity;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace CloudBuilder.Security.Entity
 {
    [TypeScript]
    [Table("sys_table_pkey_view")]
    public class SysTablePkeyViewEntity : ViewEntityBase
    {

    public SysTablePkeyViewEntity() 
    {
    }

    [Column("table_qualifier")]
    public string? TableQualifier  { get; set; }
    [Column("table_owner")]
    public string TableOwner  { get; set; }
    [Column("table_name")]
    public string TableName  { get; set; }
    [Column("column_name")]
    public string? ColumnName  { get; set; }
    [Column("pk_name")]
    public string? PkName  { get; set; }
    [Column("pk")]
    public int Pk  { get; set; }

    public const string TABLE_QUALIFIER = "TableQualifier";
    public const string TABLE_OWNER = "TableOwner";
    public const string TABLE_NAME = "TableName";
    public const string COLUMN_NAME = "ColumnName";
    public const string PK_NAME = "PkName";
    public const string PK = "Pk";

    public const string DB_NAME_SYS_TABLE_PKEY_VIEW = "sys_table_pkey_view";
    public const string DB_NAME_FIELDS="table_qualifier,table_owner,table_name,column_name,pk_name,pk";

    public const string DB_TABLE_QUALIFIER = "table_qualifier";
    public const string DB_TABLE_OWNER = "table_owner";
    public const string DB_TABLE_NAME = "table_name";
    public const string DB_COLUMN_NAME = "column_name";
    public const string DB_PK_NAME = "pk_name";
    public const string DB_PK = "pk";

    private string ProviderName { get; set; }

    public static SysTablePkeyViewEntity GetInstance(string providerName)
    {
        return new SysTablePkeyViewEntity() { ProviderName = providerName };
    }

    public virtual void CopyFrom(SysTablePkeyViewEntity source)
    {
        CopyFrom(source, true);
    }

    public virtual void CopyFrom(SysTablePkeyViewEntity source, bool includeSystemFields)
    {
        if (source == null)
        {
            throw new NullReferenceException("Source entity is null.");
        }

        this.TableQualifier =  source.TableQualifier;
        this.TableOwner =  source.TableOwner;
        this.TableName =  source.TableName;
        this.ColumnName =  source.ColumnName;
        this.PkName =  source.PkName;
        this.Pk =  source.Pk;

        if (includeSystemFields)
        {
        }
    }

    public override string GetSelectFrom()
    {
        if (ProviderName.Contains("MySql"))
        {
            return GetSelectFromByMySql();
        }
        else if (ProviderName.Contains("SqlServer"))
        {
            return GetSelectFromByBySqlServer();
        }
        else
        {
            throw new NotSupportedException($"不支持的数据库提供程序:{ProviderName}");
        }
    }
    public  string GetSelectFromByMySql()
    {
        return $" select {DB_NAME_FIELDS} from { DB_NAME_SYS_TABLE_PKEY_VIEW}  with(nolock) ";
    }
    public  string GetSelectFromByBySqlServer()
    {
        return $" select {DB_NAME_FIELDS} from { DB_NAME_SYS_TABLE_PKEY_VIEW}   ";
    }

    public override string GetSelectCountFrom(string sqlWhere)
    {
        if (ProviderName.Contains("MySql"))
        {
            return GetSelectCountFromByMySql(sqlWhere);
        }
        else if (ProviderName.Contains("SqlServer"))
        {
            return GetSelectCountFromBySqlServer(sqlWhere);
        }
        else
        {
            throw new NotSupportedException($"不支持的数据库提供程序:{ProviderName}");
        }
    }

    public  string GetSelectCountFromByMySql(string sqlWhere)
    {
        return $" select count(*) from { DB_NAME_SYS_TABLE_PKEY_VIEW}   where 1=1 {sqlWhere}";
    }
    public  string GetSelectCountFromBySqlServer(string sqlWhere)
    {
        return $" select count(*) from { DB_NAME_SYS_TABLE_PKEY_VIEW}  with(nolock) where 1=1 {sqlWhere}";
    }

	public override string GetSelectTopFrom(int limit, int start, string orderby, string orderbytag, string sqlWhere)
    {
        if (ProviderName.Contains("MySql"))
        {
            return GetSelectTopFromByMySql(limit, start, orderby, orderbytag, sqlWhere);
        }
        else if (ProviderName.Contains("SqlServer"))
        {
            return GetSelectTopFromBySqlServer(limit, start, orderby, orderbytag, sqlWhere);
        }
        else
        {
            throw new NotSupportedException($"不支持的数据库提供程序:{ProviderName}");
        }
    }

    public  string GetSelectTopFromByMySql(int limit, int start,string orderby,string orderbytag,  string sqlWhere)
    {
            if (string.IsNullOrEmpty(orderbytag)  || orderbytag.Trim() != "desc") orderbytag = "asc";
		
        if (string.IsNullOrEmpty(orderby) || !DB_NAME_FIELDS.Contains(orderby)) orderby =  DB_TABLE_QUALIFIER ;  		int offset = limit * (start - 1);
        return $" select {DB_NAME_FIELDS} from (select {DB_NAME_FIELDS}  ,row_number() over(order by {orderby} {orderbytag}) as num from { DB_NAME_SYS_TABLE_PKEY_VIEW}   where 1=1 {sqlWhere} ) a where num> {offset} LIMIT {limit} ";
    }

    public  string GetSelectTopFromBySqlServer(int limit, int start,string orderby,string orderbytag,  string sqlWhere)
    {
            if (string.IsNullOrEmpty(orderbytag)  || orderbytag.Trim() != "desc") orderbytag = "asc";
		
        if (string.IsNullOrEmpty(orderby) || !DB_NAME_FIELDS.Contains(orderby)) orderby =  DB_TABLE_QUALIFIER ;  		string top = limit > 0 ? $"top {limit}" : "";
        return $" select {top} {DB_NAME_FIELDS} from (select {DB_NAME_FIELDS}  ,row_number() over(order by {orderby} {orderbytag}) as num from { DB_NAME_SYS_TABLE_PKEY_VIEW}  with(nolock) where 1=1 {sqlWhere} ) a where num> {limit * (start - 1)}";
    }

    public SysTablePkeyViewEntity Clone()
    {
        SysTablePkeyViewEntity result = new SysTablePkeyViewEntity();
        result.CopyFrom(this);

        return result;
    }

    }
}