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parse trading212 record fees

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This commit is contained in:
Natercio Moniz
2025-11-13 12:12:24 +00:00
parent 143bd844a7
commit 077b723536
2 changed files with 48 additions and 16 deletions
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34
internal/trading212/record.go
View File

@@ -17,6 +17,8 @@ type Record struct {
quantity *big.Float
price *big.Float
timestamp time.Time
fees *big.Float
taxes *big.Float
}
func (r Record) Symbol() string {
@@ -40,11 +42,11 @@ func (r Record) Timestamp() time.Time {
}
func (r Record) Fees() *big.Float {
return new(big.Float) // FIX:
return r.fees
}
func (r Record) Taxes() *big.Float {
return new(big.Float) // FIX:
return r.taxes
}
type RecordReader struct {
@@ -98,12 +100,29 @@ func (rr RecordReader) ReadRecord() (internal.Record, error) {
return Record{}, fmt.Errorf("parse record timestamp: %w", err)
}
convertionFee, err := parseOptinalDecimal(raw[16])
if err != nil {
return Record{}, fmt.Errorf("parse record convertion fee: %w", err)
}
stampDutyTax, err := parseOptinalDecimal(raw[14])
if err != nil {
return Record{}, fmt.Errorf("parse record stamp duty tax: %w", err)
}
frenchTxTax, err := parseOptinalDecimal(raw[18])
if err != nil {
return Record{}, fmt.Errorf("parse record french transaction tax: %w", err)
}
return Record{
symbol: raw[2],
side: side,
quantity: qant,
price: price,
timestamp: ts,
fees: convertionFee,
taxes: new(big.Float).Add(stampDutyTax, frenchTxTax),
}, nil
}
}
@@ -114,3 +133,14 @@ func parseDecimal(s string) (*big.Float, error) {
f, _, err := big.ParseFloat(s, 10, 128, big.ToZero)
return f, err
}
// parseOptinalDecimal behaves the same as parseDecimal but returns 0 when len(s) is 0 instead of
// error.
// Using this function helps avoid issues around converting values due to sligh parameter changes.
func parseOptinalDecimal(s string) (*big.Float, error) {
if len(s) == 0 {
return new(big.Float), nil
}
return parseDecimal(s)
}

30
internal/trading212/record_test.go
View File

@@ -24,75 +24,69 @@ func TestRecordReader_ReadRecord(t *testing.T) {
wantErr: true,
},
{
name: "well formed buy",
r: bytes.NewBufferString(`Market buy,2025-07-03 10:44:29,SYM123456ABXY,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.3690000000,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
name: "well-formed buy",
r: bytes.NewBufferString(`Market buy,2025-07-03 10:44:29,SYM123456ABXY,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.3690000000,USD,1.17995999,,"EUR",15.25,"EUR",0.25,"EUR",0.02,"EUR",,`),
want: Record{
symbol: "SYM123456ABXY",
side: internal.SideBuy,
quantity: ShouldParseDecimal(t, "2.4387014200"),
price: ShouldParseDecimal(t, "7.3690000000"),
timestamp: time.Date(2025, 7, 3, 10, 44, 29, 0, time.UTC),
fees: ShouldParseDecimal(t, "0.02"),
taxes: ShouldParseDecimal(t, "0.25"),
},
wantErr: false,
},
{
name: "well formed sell",
r: bytes.NewBufferString(`Market sell,2025-08-04 11:45:30,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
name: "well-formed sell",
r: bytes.NewBufferString(`Market sell,2025-08-04 11:45:30,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",0.1,"EUR"`),
want: Record{
symbol: "IE000GA3D489",
side: internal.SideSell,
quantity: ShouldParseDecimal(t, "2.4387014200"),
price: ShouldParseDecimal(t, "7.9999999999"),
timestamp: time.Date(2025, 8, 4, 11, 45, 30, 0, time.UTC),
fees: ShouldParseDecimal(t, "0.02"),
taxes: ShouldParseDecimal(t, "0.1"),
},
wantErr: false,
},
{
name: "malformed side",
r: bytes.NewBufferString(`Aljksdaf Balsjdkf,2025-08-04 11:45:39,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "empty side",
r: bytes.NewBufferString(`,2025-08-04 11:45:39,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,0x1234,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "malformed qantity",
r: bytes.NewBufferString(`Market sell,2025-08-04 11:45:39,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,0x1234,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "empty qantity",
r: bytes.NewBufferString(`Market sell,2025-08-04 11:45:39,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "malformed price",
r: bytes.NewBufferString(`Market sell,2025-08-04 11:45:39,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,0b101010,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "empty price",
r: bytes.NewBufferString(`Market sell,2025-08-04 11:45:39,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "malformed timestamp",
r: bytes.NewBufferString(`Market sell,2006-01-02T15:04:05Z07:00,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
{
name: "empty timestamp",
r: bytes.NewBufferString(`Market sell,,IE000GA3D489,ABXY,"Aspargus Brocoli",EOF987654321,2.4387014200,7.9999999999,USD,1.17995999,,"EUR",15.25,"EUR",,,0.02,"EUR",,`),
want: Record{},
wantErr: true,
},
}
@@ -130,6 +124,14 @@ func TestRecordReader_ReadRecord(t *testing.T) {
if !got.Timestamp().Equal(tt.want.timestamp) {
t.Fatalf("want timestamp %v but got %v", tt.want.timestamp, got.Timestamp())
}
if got.Fees().Cmp(tt.want.fees) != 0 {
t.Fatalf("want fees %v but got %v", tt.want.fees, got.Fees())
}
if got.Taxes().Cmp(tt.want.taxes) != 0 {
t.Fatalf("want taxes %v but got %v", tt.want.taxes, got.Taxes())
}
})
}
}