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refactor: optimisation around stoptimes

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- moved stoptime related functionality into new core:data:stoptime module
  - will feature all the different realtime stoptime sources to be
      integrated later
- create proper database schema for future migrations
- deduplicate trips into stoppingpatterns, since many trips share the
  exact same stopping pattern
  - stoptimes are now linked to stoppingpatterns instead
  - stoppingpattern ids are generated from a hash composed of all stoptimes
- stoptimes now use deltas for arrival time to save space
This commit is contained in:
Cilly Leang 2026-05-05 03:23:11 +10:00
parent f1770744db
commit 102c028407
Signed by: cilly
GPG key ID: 6500251E087653C9
39 changed files with 396 additions and 223 deletions
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8
core/data/client/src/commonMain/kotlin/moe/lava/banksia/core/data/ClientDataDiModule.kt
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@ -10,16 +10,12 @@ import kotlinx.serialization.json.Json
import moe.lava.banksia.core.Constants
import moe.lava.banksia.core.data.repositories.ClientRouteRepository
import moe.lava.banksia.core.data.repositories.ClientStopRepository
import moe.lava.banksia.core.data.repositories.ClientStopTimeRepository
import moe.lava.banksia.core.data.repositories.RouteRepository
import moe.lava.banksia.core.data.repositories.StopRepository
import moe.lava.banksia.core.data.repositories.StopTimeRepository
import moe.lava.banksia.core.data.sources.route.RouteLocalDataSource
import moe.lava.banksia.core.data.sources.route.RouteRemoteDataSource
import moe.lava.banksia.core.data.sources.stop.StopLocalDataSource
import moe.lava.banksia.core.data.sources.stop.StopRemoteDataSource
import moe.lava.banksia.core.data.sources.stoptime.StopTimeLocalDataSource
import moe.lava.banksia.core.data.sources.stoptime.StopTimeRemoteDataSource
import moe.lava.banksia.core.sqld.sqldDiModule
import moe.lava.banksia.core.util.log
import moe.lava.banksia.data.ptv.PtvService
@ -29,6 +25,7 @@ import org.koin.dsl.module
val clientDataDiModule = module {
includes(sqldDiModule)
includes(stopTimeDataDiModule)
// HTTP Clients
singleOf(::PtvService)
@ -56,11 +53,8 @@ val clientDataDiModule = module {
singleOf(::RouteRemoteDataSource)
singleOf(::StopLocalDataSource)
singleOf(::StopRemoteDataSource)
singleOf(::StopTimeLocalDataSource)
singleOf(::StopTimeRemoteDataSource)
// Repositories
singleOf(::ClientRouteRepository) bind RouteRepository::class
singleOf(::ClientStopRepository) bind StopRepository::class
singleOf(::ClientStopTimeRepository) bind StopTimeRepository::class
}

16
core/data/client/src/commonMain/kotlin/moe/lava/banksia/core/data/repositories/ClientStopTimeRepository.kt
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@ -1,16 +0,0 @@
package moe.lava.banksia.core.data.repositories
import moe.lava.banksia.core.data.sources.stoptime.StopTimeLocalDataSource
import moe.lava.banksia.core.data.sources.stoptime.StopTimeRemoteDataSource
import moe.lava.banksia.core.model.StopTimeDated
internal class ClientStopTimeRepository internal constructor(
private val local: StopTimeLocalDataSource,
private val remote: StopTimeRemoteDataSource,
) : StopTimeRepository {
override suspend fun getForStop(id: String): List<StopTimeDated> {
return local
.getAtStop(id)
.ifEmpty { remote.getAtStop(id) }
}
}

35
core/data/client/src/commonMain/kotlin/moe/lava/banksia/core/data/sources/stoptime/StopTimeLocalDataSource.kt
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@ -1,35 +0,0 @@
package moe.lava.banksia.core.data.sources.stoptime
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.IO
import kotlinx.coroutines.withContext
import kotlinx.datetime.LocalDate
import kotlinx.datetime.TimeZone
import kotlinx.datetime.todayIn
import moe.lava.banksia.core.model.StopTimeDated
import moe.lava.banksia.core.model.atDate
import moe.lava.banksia.core.sqld.StopTimeQueries
import moe.lava.banksia.core.sqld.mappers.asModel
import moe.lava.banksia.core.util.serialise
import kotlin.time.Clock
internal class StopTimeLocalDataSource(
private val queries: StopTimeQueries,
) {
suspend fun getAtStop(
stopId: String,
date: LocalDate = Clock.System.todayIn(TimeZone.currentSystemDefault()),
): List<StopTimeDated> {
return withContext(Dispatchers.IO) {
queries
.getForStopDated(
listOf(date.dayOfWeek).serialise().toLong(),
date.toEpochDays(),
stopId,
)
.executeAsList()
.map { it.asModel().atDate(date) }
.sortedBy { it.departureTime }
}
}
}

36
core/data/client/src/commonMain/kotlin/moe/lava/banksia/core/data/sources/stoptime/StopTimeRemoteDataSource.kt
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@ -1,36 +0,0 @@
package moe.lava.banksia.core.data.sources.stoptime
import io.ktor.client.HttpClient
import io.ktor.client.call.body
import io.ktor.client.request.get
import io.ktor.client.request.parameter
import kotlinx.datetime.LocalDate
import kotlinx.datetime.TimeZone
import kotlinx.datetime.todayIn
import moe.lava.banksia.core.model.StopTimeDated
import kotlin.time.Clock
internal class StopTimeRemoteDataSource(
private val client: HttpClient,
) {
suspend fun getAtStop(
stopId: String,
date: LocalDate? = Clock.System.todayIn(TimeZone.currentSystemDefault()),
): List<StopTimeDated> {
return client.get("stoptimes/by_stop/${stopId}") {
parameter("date", date)
}.body<List<StopTimeDated>>()
}
/*suspend fun get(
stop: String? = null,
trip: String? = null,
day: DayOfWeek? = Clock.System.todayIn(TimeZone.currentSystemDefault()).dayOfWeek,
): List<StopTime> {
return client.get("stoptimes") {
stop?.let { parameter("stop", it) }
trip?.let { parameter("trip", it) }
day?.let { parameter("day", it) }
}.body<List<StopTime>>()
}*/
}

18
core/data/client/src/commonMain/kotlin/moe/lava/banksia/core/data/sources/trip/TripRemoteDataSource.kt
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@ -1,18 +0,0 @@
package moe.lava.banksia.core.data.sources.trip
import io.ktor.client.HttpClient
import kotlinx.datetime.DayOfWeek
import kotlinx.datetime.TimeZone
import kotlinx.datetime.todayIn
import moe.lava.banksia.core.model.Trip
import kotlin.time.Clock
internal class TripRemoteDataSource(
private val client: HttpClient,
) {
suspend fun get(
day: DayOfWeek? = Clock.System.todayIn(TimeZone.currentSystemDefault()).dayOfWeek,
): List<Trip> {
return listOf()
}
}