77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
package database
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import (
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"fmt"
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"github.com/jackc/pgio"
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"github.com/jackc/pgtype"
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)
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const NewInvoiceProductTypeName = "new_invoice_product"
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type NewInvoiceProduct struct {
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ProductId int
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Name string
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Description string
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Price string
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Quantity int
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Discount float64
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Taxes []int
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}
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func (src NewInvoiceProduct) EncodeBinary(ci *pgtype.ConnInfo, dst []byte) ([]byte, error) {
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typeName := NewInvoiceProductTypeName
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dt, ok := ci.DataTypeForName(typeName)
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if !ok {
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return nil, fmt.Errorf("unable to find oid for type name %v", typeName)
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}
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var productId interface{}
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if src.ProductId > 0 {
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productId = src.ProductId
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}
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values := []interface{}{
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productId,
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src.Name,
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src.Description,
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src.Price,
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src.Quantity,
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src.Discount,
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src.Taxes,
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}
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ct := pgtype.NewValue(dt.Value).(*pgtype.CompositeType)
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if err := ct.Set(values); err != nil {
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return nil, err
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}
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return ct.EncodeBinary(ci, dst)
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}
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type NewInvoiceProductArray []*NewInvoiceProduct
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func (src NewInvoiceProductArray) EncodeBinary(ci *pgtype.ConnInfo, buf []byte) ([]byte, error) {
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typeName := NewInvoiceProductTypeName
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dt, ok := ci.DataTypeForName(typeName)
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if !ok {
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return nil, fmt.Errorf("unable to find oid for type name %v", typeName)
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}
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arrayHeader := pgtype.ArrayHeader{
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ElementOID: int32(dt.OID),
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Dimensions: []pgtype.ArrayDimension{{Length: int32(len(src)), LowerBound: 1}},
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}
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buf = arrayHeader.EncodeBinary(ci, buf)
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for _, product := range src {
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sp := len(buf)
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buf = pgio.AppendInt32(buf, -1)
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elemBuf, err := product.EncodeBinary(ci, buf)
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if err != nil {
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return nil, err
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}
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if elemBuf != nil {
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buf = elemBuf
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pgio.SetInt32(buf[sp:], int32(len(buf[sp:])-4))
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}
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}
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return buf, nil
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}
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