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feat: Add reverse currency rate as fallback

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Myzel394 2024-04-22 22:11:26 +02:00
parent 56c99a42f4
commit 50608619d7
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GPG Key ID: DEC4AAB876F73185
1 changed files with 24 additions and 3 deletions
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27
data/converter/src/main/java/app/myzel394/numberhub/data/converter/UnitsRepositoryImpl.kt
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@ -453,7 +453,7 @@ class UnitsRepositoryImpl @Inject constructor(
unitToId: String,
value: BigDecimal,
): ConverterResult = withContext(Dispatchers.IO) {
refreshCurrencyRates(unitFromId)
refreshCurrencyRates(unitFromId, unitToId)
val latestRate = currencyRatesDao.getLatestRate(unitFromId, unitToId)
if (latestRate?.pairUnitValue == null) return@withContext ConverterResult.Error.Currency
@ -494,7 +494,7 @@ class UnitsRepositoryImpl @Inject constructor(
return@withContext units
}
private suspend fun refreshCurrencyRates(unitFromId: String) = withContext(Dispatchers.IO) {
private suspend fun refreshCurrencyRates(unitFromId: String, unitToId: String) = withContext(Dispatchers.IO) {
val latestUpdateDate = currencyRatesDao.getLatestRateTimeStamp(unitFromId)
val currentDate = LocalDate.now().toEpochDay()
@ -513,7 +513,28 @@ class UnitsRepositoryImpl @Inject constructor(
}
currencyRatesDao.insertRates(rates)
} catch (e: Exception) {
Log.d("UnitsRepositoryImpl", "Skipped update: $e")
Log.w("UnitsRepositoryImpl", "Updating currency rates failed: $e");
// If fails, try to get the currency `unitToId` and calculate the rate
// example:
val latestReverseData = currencyRatesDao.getLatestRate(unitToId, unitFromId);
if (latestReverseData != null) {
val reverseRate = BigDecimal.ONE.divide(latestReverseData.pairUnitValue, 10, RoundingMode.HALF_EVEN)
Log.d("UnitsRepositoryImpl", "Updated currency via reverse rate: $reverseRate");
currencyRatesDao.insertRates(
listOf(
CurrencyRatesEntity(
baseUnitId = unitFromId,
date = currentDate,
pairUnitId = unitToId,
pairUnitValue = reverseRate,
),
),
)
}
}
}
}