// копия файла из https://github.com/jackc/pgtype/pgtype.go
// чтоб не выдавала ошибку на null
// чтобы дата NULL = time.Time{}
package postgres_pgtype

import (
	"database/sql/driver"
	"github.com/jackc/pgx/v5/pgtype"
)

// PostgreSQL oids for common types
const (
	BoolOID                = 16
	ByteaOID               = 17
	QCharOID               = 18
	NameOID                = 19
	Int8OID                = 20
	Int2OID                = 21
	Int4OID                = 23
	TextOID                = 25
	OIDOID                 = 26
	TIDOID                 = 27
	XIDOID                 = 28
	CIDOID                 = 29
	JSONOID                = 114
	XMLOID                 = 142
	XMLArrayOID            = 143
	JSONArrayOID           = 199
	XID8ArrayOID           = 271
	PointOID               = 600
	LsegOID                = 601
	PathOID                = 602
	BoxOID                 = 603
	PolygonOID             = 604
	LineOID                = 628
	LineArrayOID           = 629
	CIDROID                = 650
	CIDRArrayOID           = 651
	Float4OID              = 700
	Float8OID              = 701
	CircleOID              = 718
	CircleArrayOID         = 719
	UnknownOID             = 705
	Macaddr8OID            = 774
	MacaddrOID             = 829
	InetOID                = 869
	BoolArrayOID           = 1000
	QCharArrayOID          = 1002
	NameArrayOID           = 1003
	Int2ArrayOID           = 1005
	Int4ArrayOID           = 1007
	TextArrayOID           = 1009
	TIDArrayOID            = 1010
	ByteaArrayOID          = 1001
	XIDArrayOID            = 1011
	CIDArrayOID            = 1012
	BPCharArrayOID         = 1014
	VarcharArrayOID        = 1015
	Int8ArrayOID           = 1016
	PointArrayOID          = 1017
	LsegArrayOID           = 1018
	PathArrayOID           = 1019
	BoxArrayOID            = 1020
	Float4ArrayOID         = 1021
	Float8ArrayOID         = 1022
	PolygonArrayOID        = 1027
	OIDArrayOID            = 1028
	ACLItemOID             = 1033
	ACLItemArrayOID        = 1034
	MacaddrArrayOID        = 1040
	InetArrayOID           = 1041
	BPCharOID              = 1042
	VarcharOID             = 1043
	DateOID                = 1082
	TimeOID                = 1083
	TimestampOID           = 1114
	TimestampArrayOID      = 1115
	DateArrayOID           = 1182
	TimeArrayOID           = 1183
	TimestamptzOID         = 1184
	TimestamptzArrayOID    = 1185
	IntervalOID            = 1186
	IntervalArrayOID       = 1187
	NumericArrayOID        = 1231
	TimetzOID              = 1266
	TimetzArrayOID         = 1270
	BitOID                 = 1560
	BitArrayOID            = 1561
	VarbitOID              = 1562
	VarbitArrayOID         = 1563
	NumericOID             = 1700
	RecordOID              = 2249
	RecordArrayOID         = 2287
	UUIDOID                = 2950
	UUIDArrayOID           = 2951
	JSONBOID               = 3802
	JSONBArrayOID          = 3807
	DaterangeOID           = 3912
	DaterangeArrayOID      = 3913
	Int4rangeOID           = 3904
	Int4rangeArrayOID      = 3905
	NumrangeOID            = 3906
	NumrangeArrayOID       = 3907
	TsrangeOID             = 3908
	TsrangeArrayOID        = 3909
	TstzrangeOID           = 3910
	TstzrangeArrayOID      = 3911
	Int8rangeOID           = 3926
	Int8rangeArrayOID      = 3927
	JSONPathOID            = 4072
	JSONPathArrayOID       = 4073
	Int4multirangeOID      = 4451
	NummultirangeOID       = 4532
	TsmultirangeOID        = 4533
	TstzmultirangeOID      = 4534
	DatemultirangeOID      = 4535
	Int8multirangeOID      = 4536
	XID8OID                = 5069
	Int4multirangeArrayOID = 6150
	NummultirangeArrayOID  = 6151
	TsmultirangeArrayOID   = 6152
	TstzmultirangeArrayOID = 6153
	DatemultirangeArrayOID = 6155
	Int8multirangeArrayOID = 6157
)

func codecDecodeToTextFormat(codec pgtype.Codec, m *pgtype.Map, oid uint32, format int16, src []byte) (driver.Value, error) {
	if src == nil {
		return nil, nil
	}

	if format == pgtype.TextFormatCode {
		return string(src), nil
	} else {
		value, err := codec.DecodeValue(m, oid, format, src)
		if err != nil {
			return nil, err
		}
		buf, err := m.Encode(oid, pgtype.TextFormatCode, value, nil)
		if err != nil {
			return nil, err
		}
		return string(buf), nil
	}
}