1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
package swift
import (
"fmt"
"sort"
"strings"
"time"
"github.com/mitch000001/go-hbci/domain"
)
func NewMT940Messages(data []byte) *MT940Messages {
return &MT940Messages{
Data: data,
timestamp: time.Now().UnixNano(),
}
}
type MT940Messages struct {
Data []byte
timestamp int64
}
func MergeMT940Messages(messages ...*MT940Messages) *MT940Messages {
sortedMessages := sortedByTimestamp(messages)
sort.Sort(sortedMessages)
merged := &MT940Messages{
Data: []byte{},
timestamp: time.Now().UnixNano(),
}
for _, msg := range sortedMessages {
merged.Data = append(merged.Data, msg.Data...)
}
return merged
}
type sortedByTimestamp []*MT940Messages
// Len is the number of elements in the collection.
func (s sortedByTimestamp) Len() int {
return len(s)
}
// Less reports whether the element with index i
// must sort before the element with index j.
//
// If both Less(i, j) and Less(j, i) are false,
// then the elements at index i and j are considered equal.
// Sort may place equal elements in any order in the final result,
// while Stable preserves the original input order of equal elements.
//
// Less must describe a transitive ordering:
// - if both Less(i, j) and Less(j, k) are true, then Less(i, k) must be true as well.
// - if both Less(i, j) and Less(j, k) are false, then Less(i, k) must be false as well.
//
// Note that floating-point comparison (the < operator on float32 or float64 values)
// is not a transitive ordering when not-a-number (NaN) values are involved.
// See Float64Slice.Less for a correct implementation for floating-point values.
func (s sortedByTimestamp) Less(i int, j int) bool {
return s[i].timestamp < s[j].timestamp
}
// Swap swaps the elements with indexes i and j.
func (s sortedByTimestamp) Swap(i int, j int) {
s[i], s[j] = s[j], s[i]
}
type MT940Unmarshaler interface {
UnmarshalMT940([]byte) ([]domain.AccountTransaction, error)
}
func NewMT940MessagesUnmarshaler() MT940Unmarshaler {
return &mt940MessagesUnmarshaler{}
}
type mt940MessagesUnmarshaler struct{}
func (m *mt940MessagesUnmarshaler) UnmarshalMT940(value []byte) ([]domain.AccountTransaction, error) {
messageExtractor := NewMessageExtractor(value)
messages, err := messageExtractor.Extract()
if err != nil {
return nil, fmt.Errorf("error extracting messages: %w", err)
}
var errors errorList
var transactions []domain.AccountTransaction
for _, message := range messages {
tr := &MT940{}
err = tr.Unmarshal(message)
if err != nil {
errors = append(errors, fmt.Errorf("error unmarshaling MT940: %w", err))
}
transactions = append(transactions, tr.AccountTransactions()...)
}
if len(errors) != 0 {
return nil, errors
}
return transactions, nil
}
type errorList []error
func (e errorList) Error() string {
errs := make([]string, len(e))
for i, err := range e {
errs[i] = err.Error()
}
return strings.Join(errs, ",")
}
|
