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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
use async_trait::async_trait;
use crate::datatypes::{
Asset, AssetHandler, AssetSelector, Currency, CurrencyISOCode, DataError, DataItem, Stock,
};
use super::PostgresDB;
/// helper struct
struct ID {
id: i32,
}
/// Handler for globally available Asset data
#[async_trait]
impl AssetHandler for PostgresDB {
async fn insert_asset(&self, asset: &Asset) -> Result<i32, DataError> {
let asset = asset.to_owned();
// begin transaction
let tx = self.pool.begin().await?;
let row = sqlx::query!(
"INSERT INTO assets (asset_class) VALUES ($1) RETURNING id",
asset.class(),
)
.fetch_one(&self.pool)
.await?;
let id = row.id;
match asset {
Asset::Currency(c) => {
sqlx::query!(
"INSERT INTO currencies (id, iso_code, rounding_digits) VALUES ($1, $2, $3)",
id,
c.iso_code.to_string(),
c.rounding_digits,
)
.execute(&self.pool)
.await?;
tx.commit().await?;
Ok(id)
}
Asset::Stock(s) => {
sqlx::query!(
"INSERT INTO stocks (id, name, isin, wkn, note) VALUES ($1, $2, $3, $4, $5)",
id,
s.name,
s.isin,
s.wkn,
s.note
)
.execute(&self.pool)
.await?;
tx.commit().await?;
Ok(id)
}
}
}
async fn get_asset_id(&self, asset: &Asset) -> Option<i32> {
let id = match asset {
Asset::Currency(c) => sqlx::query_as!(
ID,
"SELECT id FROM currencies WHERE iso_code = $1",
&c.iso_code.to_string()
)
.fetch_one(&self.pool)
.await
.ok(),
Asset::Stock(s) => {
if let Some(wkn) = &s.wkn {
sqlx::query_as!(ID, "SELECT id FROM stocks WHERE wkn = $1", wkn)
.fetch_one(&self.pool)
.await
.ok()
} else {
sqlx::query_as!(ID, "SELECT id FROM stocks WHERE isin = $1", s.isin)
.fetch_one(&self.pool)
.await
.ok()
}
}
};
id.map(|x| x.id)
}
async fn get_asset_by_id(&self, id: i32) -> Result<Asset, DataError> {
let row = sqlx::query!(
r#"SELECT
asset_class
FROM assets
WHERE id = $1"#,
id,
)
.fetch_one(&self.pool)
.await?;
match row.asset_class.as_str() {
"currency" => {
let row = sqlx::query!(
r#"SELECT
id,
iso_code,
rounding_digits
FROM currencies
WHERE id = $1"#,
id,
)
.fetch_one(&self.pool)
.await?;
Ok(Asset::Currency(Currency::new(
Some(row.id),
CurrencyISOCode::new(&row.iso_code)?,
Some(row.rounding_digits),
)))
}
"stock" => {
let row = sqlx::query!(
r#"SELECT
id,
name,
isin,
wkn,
note
FROM stocks s
WHERE id = $1"#,
id,
)
.fetch_one(&self.pool)
.await?;
Ok(Asset::Stock(Stock::new(
Some(row.id),
row.name,
row.isin,
row.wkn,
row.note,
)))
}
_ => Err(DataError::InvalidAsset(row.asset_class)),
}
}
async fn get_asset_by_isin(&self, isin: &str) -> Result<Asset, DataError> {
let row = sqlx::query!(
r#"SELECT
id,
name,
isin,
wkn,
note
FROM stocks
WHERE isin = $1"#,
isin.to_string(),
)
.fetch_one(&self.pool)
.await?;
Ok(Asset::Stock(Stock::new(
Some(row.id),
row.name,
row.isin,
row.wkn,
row.note,
)))
}
async fn get_all_assets(&self) -> Result<Vec<Asset>, DataError> {
let mut assets = Vec::new();
for row in sqlx::query!(
r#"SELECT
id
FROM assets"#
)
.fetch_all(&self.pool)
.await?
{
assets.push(self.get_asset_by_id(row.id).await?);
}
Ok(assets)
}
/// Return AssetSelector for all assets
async fn get_asset_list(&self) -> Result<Vec<AssetSelector>, DataError> {
let mut assets = Vec::new();
for row in sqlx::query!(
r#"SELECT
a.id as "id!",
a.asset_class as "asset_class!",
CASE
WHEN a.asset_class='currency' THEN c.iso_code
ELSE s.name
END as "name!"
FROM
assets a
LEFT JOIN stocks s ON a.id = s.id
LEFT JOIN currencies c ON a.id = c.id"#
)
.fetch_all(&self.pool)
.await?
{
assets.push(AssetSelector {
id: row.id,
name: row.name,
class: row.asset_class,
});
}
Ok(assets)
}
async fn update_asset(&self, asset: &Asset) -> Result<(), DataError> {
match asset {
Asset::Currency(c) => {
if let Some(id) = c.id {
sqlx::query!(
"UPDATE currencies
SET
iso_code=$2,
rounding_digits=$3
WHERE id=$1;",
id as i32,
c.iso_code.to_string(),
c.rounding_digits
)
.execute(&self.pool)
.await?;
Ok(())
} else {
Err(DataError::NotFound(
"not yet stored to database".to_string(),
))
}
}
Asset::Stock(s) => {
if let Some(id) = s.id {
sqlx::query!(
"UPDATE stocks
SET
name=$2,
isin=$3,
wkn=$4,
note=$5
WHERE id=$1;",
id as i32,
s.name,
s.isin,
s.wkn,
s.note
)
.execute(&self.pool)
.await?;
Ok(())
} else {
Err(DataError::NotFound(
"not yet stored to database".to_string(),
))
}
}
}
}
async fn delete_asset(&self, id: i32) -> Result<(), DataError> {
let row = sqlx::query!("SELECT asset_class FROM assets WHERE id=$1", id as i32,)
.fetch_one(&self.pool)
.await?;
match row.asset_class.as_str() {
"currency" => {
let tx = self.pool.begin().await?;
sqlx::query!("DELETE FROM currencies WHERE id=$1;", id)
.execute(&self.pool)
.await?;
sqlx::query!("DELETE FROM assets WHERE id=$1;", id)
.execute(&self.pool)
.await?;
tx.commit().await?;
Ok(())
}
"stock" => {
let tx = self.pool.begin().await?;
sqlx::query!("DELETE FROM stocks WHERE id=$1;", id)
.execute(&self.pool)
.await?;
sqlx::query!("DELETE FROM assets WHERE id=$1;", id)
.execute(&self.pool)
.await?;
tx.commit().await?;
Ok(())
}
_ => Err(DataError::InvalidAsset(
"Could not delete unknown asset".to_string(),
)),
}
}
async fn get_all_currencies(&self) -> Result<Vec<Currency>, DataError> {
let mut currencies = Vec::new();
for row in sqlx::query!(
"SELECT
id,
iso_code,
rounding_digits
FROM currencies"
)
.fetch_all(&self.pool)
.await?
{
currencies.push(Currency::new(
Some(row.id),
CurrencyISOCode::new(&row.iso_code)?,
Some(row.rounding_digits),
));
}
Ok(currencies)
}
async fn get_currency_list(&self) -> Result<Vec<AssetSelector>, DataError> {
let mut currencies = Vec::new();
for row in sqlx::query!(
r#"SELECT
id as "id!",
iso_code
FROM
currencies"#
)
.fetch_all(&self.pool)
.await?
{
currencies.push(AssetSelector {
id: row.id,
name: row.iso_code,
class: "currency".to_string(),
});
}
Ok(currencies)
}
async fn get_or_new_currency(&self, iso_code: CurrencyISOCode) -> Result<Currency, DataError> {
self.get_or_new_currency_with_digits(iso_code, 2).await
}
async fn get_or_new_currency_with_digits(
&self,
iso_code: CurrencyISOCode,
rounding_digits: i32,
) -> Result<Currency, DataError> {
let row = sqlx::query!(
"SELECT
id,
rounding_digits
FROM currencies
WHERE iso_code=$1",
iso_code.to_string()
)
.fetch_one(&self.pool)
.await;
if let Ok(row) = row {
Ok(Currency::new(
Some(row.id),
iso_code,
Some(row.rounding_digits),
))
} else {
let mut currency = Currency::new(None, iso_code, Some(rounding_digits));
let id = self.insert_asset(&Asset::Currency(currency)).await?;
currency.set_id(id)?;
Ok(currency)
}
}
}