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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
package dbx
import (
"context"
"database/sql"
"slices"
)
type CountryMintageData struct {
Standard []MSCountryRow
Commemorative []MCommemorative
}
type YearMintageData struct {
Standard []MSYearRow
Commemorative []MCommemorative
}
type msRow struct {
Country string
Type MintageType
Year int
Denomination float64
Mintmark sql.Null[string]
Mintage sql.Null[int]
Reference sql.Null[string]
}
type MSCountryRow struct {
Year int
Mintmark sql.Null[string]
Mintages [ndenoms]sql.Null[int]
References [ndenoms]sql.Null[string]
}
type MSYearRow struct {
Country string
Mintmark sql.Null[string]
Mintages [ndenoms]sql.Null[int]
References [ndenoms]sql.Null[string]
}
type MCommemorative struct {
Country string
Type MintageType
Year int
Name string
Number int
Mintmark sql.Null[string]
Mintage sql.Null[int]
Reference sql.Null[string]
}
type MintageType int
/* DO NOT REORDER! */
const (
TypeCirc MintageType = iota
TypeNifc
TypeProof
)
const ndenoms = 8
func NewMintageType(s string) MintageType {
switch s {
case "circ":
return TypeCirc
case "nifc":
return TypeNifc
case "proof":
return TypeProof
}
/* We can get here if the user sends a request manually, so just
fallback to this */
return TypeCirc
}
func GetMintagesByYear(year int, typ MintageType) (YearMintageData, error) {
var (
zero YearMintageData
xs []MSYearRow
ys []MCommemorative
)
rs, err := db.QueryxContext(context.TODO(), `
SELECT * FROM mintages_s
WHERE year = ? AND type = ?
ORDER BY country, mintmark, denomination
`, year, typ)
if err != nil {
return zero, err
}
for rs.Next() {
var x msRow
if err = rs.StructScan(&x); err != nil {
return zero, err
}
loop:
msr := MSYearRow{
Country: x.Country,
Mintmark: x.Mintmark,
}
i := denomToIdx(x.Denomination)
msr.Mintages[i] = x.Mintage
msr.References[i] = x.Reference
for rs.Next() {
var y msRow
if err = rs.StructScan(&y); err != nil {
return zero, err
}
if x.Country != y.Country || x.Mintmark != y.Mintmark {
x = y
xs = append(xs, msr)
goto loop
}
i = denomToIdx(y.Denomination)
msr.Mintages[i] = y.Mintage
msr.References[i] = y.Reference
}
xs = append(xs, msr)
}
if err = rs.Err(); err != nil {
return zero, err
}
db.SelectContext(context.TODO(), &ys, `
SELECT * FROM mintages_c
WHERE year = ? and type = ?
ORDER BY country, mintmark, number
`, year, typ)
return YearMintageData{xs, ys}, nil
}
func GetMintagesByCountry(country string, typ MintageType) (CountryMintageData, error) {
var (
zero CountryMintageData
xs []MSCountryRow
ys []MCommemorative
)
rs, err := db.QueryxContext(context.TODO(), `
SELECT * FROM mintages_s
WHERE country = ? AND type = ?
ORDER BY year, mintmark, denomination
`, country, typ)
if err != nil {
return zero, err
}
for rs.Next() {
var x msRow
if err = rs.StructScan(&x); err != nil {
return zero, err
}
loop:
msr := MSCountryRow{
Year: x.Year,
Mintmark: x.Mintmark,
}
i := denomToIdx(x.Denomination)
msr.Mintages[i] = x.Mintage
msr.References[i] = x.Reference
for rs.Next() {
var y msRow
if err = rs.StructScan(&y); err != nil {
return zero, err
}
if x.Year != y.Year || x.Mintmark != y.Mintmark {
x = y
xs = append(xs, msr)
goto loop
}
i = denomToIdx(y.Denomination)
msr.Mintages[i] = y.Mintage
msr.References[i] = y.Reference
}
xs = append(xs, msr)
}
if err = rs.Err(); err != nil {
return zero, err
}
db.SelectContext(context.TODO(), &ys, `
SELECT * FROM mintages_c
WHERE country = ? and type = ?
ORDER BY year, mintmark, number
`, country, typ)
return CountryMintageData{xs, ys}, rs.Err()
}
func denomToIdx(d float64) int {
return slices.Index([]float64{
0.01, 0.02, 0.05, 0.10,
0.20, 0.50, 1.00, 2.00,
}, d)
}
|
