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[+] Try lookup id function

pull/14/head
Azalea 2024-02-19 21:49:55 -05:00
parent adf091e300
commit cd8677a26d
1 changed files with 33 additions and 0 deletions
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33
src/main/java/icu/samnyan/aqua/sega/general/service/CardService.kt
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@ -6,6 +6,7 @@ import org.springframework.stereotype.Service
import java.time.LocalDateTime
import java.util.*
import java.util.concurrent.ThreadLocalRandom
import kotlin.jvm.optionals.getOrNull
/**
* @author samnyan (privateamusement@protonmail.com)
@ -46,6 +47,38 @@ class CardService(val cardRepo: CardRepository) {
accessTime = registerTime
})
/**
* Try to look up a card by a string ID. This ID could be one of the following:
*
* 1. An AIME access code (as a string stored directly in `luid` field)
* 2. A Felica IDm (as a hex string 01:2E:XX:XX:XX:XX:XX:XX), converted to int64 and stored in `luid` field
* 3. An NFC Serial (as a hex string XX:XX:XX:XX), converted to Felica by masking it with 01:2E:FF:FF:FF:FF:FF:FF
* 4. Any of (2) or (3) converted to a decimal string, which is honestly the same as (1) so ignore this case
*/
fun tryLookup(id: String): Card? {
// Check case (1) and (4)
cardRepo.findByLuid(id)?.getOrNull()?.let { return it }
cardRepo.findByLuid(id.padStart(20, '0'))?.getOrNull()?.let { return it }
// Check case (2)
// First remove the colons
val idm = id.replace(":", "")
// Then convert to long, left pad zeros to make 20 digits, and look up
idm.toLongOrNull(16)?.let { idmLong ->
cardRepo.findByLuid("%020d".format(idmLong))?.getOrNull()?.let { return it }
}
// Check case (3)
idm.padStart(16, '0').takeLast(12).let { "012E$it" }.let { idmMasked ->
idmMasked.toLongOrNull(16)?.let { idmMaskedLong ->
cardRepo.findByLuid("%020d".format(idmMaskedLong))?.getOrNull()?.let { return it }
}
}
// If nothing is found, return null
return null
}
fun randExtID(lower: Long = 0, upper: Long = 99999999): Long {
var eid = ThreadLocalRandom.current().nextLong(lower, upper)
while (cardRepo.findByExtId(eid).isPresent) {