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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/* openbills - Server for web based Libre Billing Software
* Copyright (C) 2023 Vidhu Kant Sharma <vidhukant@vidhukant.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package invoice
import (
e "vidhukant.com/openbills/errors"
)
// returns greatest invoice number + 1
func getNewInvoiceNumber(userId uint) (uint, error) {
var i uint
row := db.Model(&Invoice{}).Where("user_id = ?", userId).Select("max(invoice_number)").Row()
err := row.Scan(&i)
return i + 1, err
}
func getInvoice(invoice *Invoice, id uint) error {
res := db.Preload("BillingAddress").Preload("ShippingAddress").Preload("Items").Find(&invoice, id)
// TODO: handle potential errors
if res.Error != nil {
return res.Error
}
if res.RowsAffected == 0 {
return e.ErrNotFound
}
return nil
}
func getInvoices(invoices *[]Invoice, userId uint) error {
res := db.Where("user_id = ?", userId).Find(&invoices)
// TODO: handle potential errors
if res.Error != nil {
return res.Error
}
if res.RowsAffected == 0 {
return e.ErrEmptyResponse
}
return nil
}
// TODO: route to only get the invouce's items
func (i *Invoice) upsert() error {
res := db.Save(i)
// TODO: handle potential errors
return res.Error
}
func (i *Invoice) del() error {
res := db.Where("id = ? and user_id = ?", i.ID, i.UserID).Delete(i)
// TODO: handle potential errors
if res.Error != nil {
return res.Error
}
// returns 404 if either row doesn't exist or if the user doesn't own it
if res.RowsAffected == 0 {
return e.ErrNotFound
}
return nil
}
// also checks for ownership
func getItemInvoice(itemId, userId uint) (uint, error) {
var invoiceId uint
res := db.
Model(&InvoiceItem{}).
Select("invoice_id").
Where("id = ?", itemId).
Find(&invoiceId)
// TODO: handle potential errors
if res.Error != nil {
return invoiceId, res.Error
}
if res.RowsAffected == 0 {
return invoiceId, e.ErrNotFound
}
err := checkInvoiceOwnership(invoiceId, userId)
if err != nil {
return invoiceId, err
}
return invoiceId, nil
}
func (i *InvoiceItem) del() error {
res := db.Delete(i)
// TODO: handle potential errors
if res.Error != nil {
return res.Error
}
// returns 404 if either row doesn't exist or if the user doesn't own it
if res.RowsAffected == 0 {
return e.ErrNotFound
}
return nil
}
func (i *InvoiceItem) upsert() error {
res := db.Save(i)
// TODO: handle potential errors
return res.Error
}
|
