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package mx.trackermap.TrackerMap.controllers
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.DelicateCoroutinesApi
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.*
import kotlinx.coroutines.launch
import mx.trackermap.TrackerMap.client.apis.DevicesApi
import mx.trackermap.TrackerMap.client.apis.PositionsApi
import mx.trackermap.TrackerMap.client.models.Position
import mx.trackermap.TrackerMap.client.models.UnitInformation
import mx.trackermap.TrackerMap.utils.Coroutines
import kotlin.time.Duration.Companion.seconds
import kotlin.time.ExperimentalTime
@DelicateCoroutinesApi
@ExperimentalTime
class UnitsController(
private val devicesApi: DevicesApi,
private val positionsApi: PositionsApi
) {
private companion object {
const val UPDATE_TIME = 20
}
val displayedUnitsFlow = MutableStateFlow<List<UnitInformation>>(emptyList())
private val unitsFlow = MutableStateFlow<List<UnitInformation>>(emptyList())
private val queryFlow = MutableStateFlow("")
init {
GlobalScope.launch {
fetchUnits(this)
}
GlobalScope.launch {
setupFlows()
}
}
private suspend fun fetchUnits(scope: CoroutineScope) {
Coroutines.tickerFlow(UPDATE_TIME.seconds)
.map {
print("Fetching new positions...\n")
positionsApi.positionsGet()
}
.distinctUntilChanged { old, new ->
old.contentEquals(new)
}
.onEach { positions ->
print("Position(s) changed! Reloading data...\n")
val devices = devicesApi.devicesGet()
val positionsMap: MutableMap<Int, Position> = mutableMapOf()
positions.forEach { position ->
position.deviceId?.let {
positionsMap[it] = position
}
}
val units = devices.map {
UnitInformation(it, positionsMap[it.id])
}
unitsFlow.value = units
}
.catch {
print("Could not retrieve positions\n")
}
.launchIn(scope)
}
fun search(query: String) {
queryFlow.value = query
}
suspend fun getUnit(deviceId: Int): UnitInformation {
val device = devicesApi.devicesGet(id = deviceId).first()
val position = positionsApi.positionsGet(id = device.positionId).first()
return UnitInformation(device, position)
}
private suspend fun setupFlows() {
unitsFlow.combine(queryFlow) { units, query ->
units.filter { unit ->
unit.device.name.contains(query, true) ||
unit.device.contact?.contains(query, true) == true ||
unit.position?.address?.contains(query, true) == true
}
}.collect { units ->
this.displayedUnitsFlow.value = units
}
}
}
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