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feat: di, db, and preliminary server-side gtfs parsing

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This commit is contained in:
LavaDesu 2025-08-08 01:59:32 +10:00
parent ccc748dc1f
commit 6770c01613
Signed by: cilly
GPG key ID: 6500251E087653C9
22 changed files with 555 additions and 24 deletions
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43
shared/src/commonMain/kotlin/moe/lava/banksia/room/converter/ShapeConverter.kt Normal file
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@ -0,0 +1,43 @@
package moe.lava.banksia.room.converter
import androidx.room.TypeConverter
import moe.lava.banksia.model.ShapePath
import moe.lava.banksia.util.Point
object ShapeConverter {
@TypeConverter
fun from(value: ByteArray): ShapePath {
return value
.asIterable()
.chunked(8) {
(it[0].toLong() and 0xFF) or
(it[1].toLong() and 0xFF shl 8) or
(it[2].toLong() and 0xFF shl 16) or
(it[3].toLong() and 0xFF shl 24) or
(it[4].toLong() and 0xFF shl 32) or
(it[5].toLong() and 0xFF shl 40) or
(it[6].toLong() and 0xFF shl 48) or
(it[7].toLong() and 0xFF shl 56)
}
.map { Double.fromBits(it) }
.chunked(2)
.map { (lat, lng) -> Point(lat, lng) }
}
@TypeConverter
fun to(path: ShapePath): ByteArray {
return path
.flatMap { (lat, lng) -> listOf(lat.toBits(), lng.toBits()) }
.flatMap { i -> listOf(
i.toByte(),
(i shr 8).toByte(),
(i shr 16).toByte(),
(i shr 24).toByte(),
(i shr 32).toByte(),
(i shr 40).toByte(),
(i shr 48).toByte(),
(i shr 56).toByte(),
) }
.toByteArray()
}
}