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encapsulates logic to load charging stations for future implementation of offline caching (#164, #97)
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117 changes: 96 additions & 21 deletions
117
app/src/main/java/net/vonforst/evmap/storage/ChargeLocationsDao.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,34 +1,109 @@ | ||
| package net.vonforst.evmap.storage | ||
|
|
||
| import androidx.lifecycle.LiveData | ||
| import androidx.room.* | ||
| import androidx.lifecycle.* | ||
| import androidx.room.Dao | ||
| import androidx.room.Delete | ||
| import androidx.room.Insert | ||
| import androidx.room.OnConflictStrategy | ||
| import com.car2go.maps.model.LatLng | ||
| import com.car2go.maps.model.LatLngBounds | ||
| import kotlinx.coroutines.CoroutineScope | ||
| import net.vonforst.evmap.api.ChargepointApi | ||
| import net.vonforst.evmap.api.StringProvider | ||
| import net.vonforst.evmap.api.goingelectric.GoingElectricApiWrapper | ||
| import net.vonforst.evmap.api.openchargemap.OpenChargeMapApiWrapper | ||
| import net.vonforst.evmap.model.ChargeLocation | ||
| import net.vonforst.evmap.model.ChargepointListItem | ||
| import net.vonforst.evmap.model.FilterValues | ||
| import net.vonforst.evmap.model.ReferenceData | ||
| import net.vonforst.evmap.viewmodel.Resource | ||
| import net.vonforst.evmap.viewmodel.await | ||
|
|
||
| @Dao | ||
| interface ChargeLocationsDao { | ||
| abstract class ChargeLocationsDao { | ||
| @Insert(onConflict = OnConflictStrategy.REPLACE) | ||
| suspend fun insert(vararg locations: ChargeLocation) | ||
|
|
||
| @Insert(onConflict = OnConflictStrategy.REPLACE) | ||
| fun insertBlocking(vararg locations: ChargeLocation) | ||
| abstract suspend fun insert(vararg locations: ChargeLocation) | ||
|
|
||
| @Delete | ||
| suspend fun delete(vararg locations: ChargeLocation) | ||
| abstract suspend fun delete(vararg locations: ChargeLocation) | ||
| } | ||
|
|
||
| /** | ||
| * The ChargeLocationsRepository wraps the ChargepointApi and the DB to provide caching | ||
| * functionality. | ||
| */ | ||
| class ChargeLocationsRepository( | ||
| api: ChargepointApi<ReferenceData>, private val scope: CoroutineScope, | ||
| private val db: AppDatabase, private val prefs: PreferenceDataSource | ||
| ) { | ||
| val api = MutableLiveData<ChargepointApi<ReferenceData>>().apply { value = api } | ||
|
|
||
| val referenceData = this.api.switchMap { | ||
| when (it) { | ||
| is GoingElectricApiWrapper -> { | ||
| GEReferenceDataRepository( | ||
| it, | ||
| scope, | ||
| db.geReferenceDataDao(), | ||
| prefs | ||
| ).getReferenceData() | ||
| } | ||
| is OpenChargeMapApiWrapper -> { | ||
| OCMReferenceDataRepository( | ||
| it, | ||
| scope, | ||
| db.ocmReferenceDataDao(), | ||
| prefs | ||
| ).getReferenceData() | ||
| } | ||
| else -> { | ||
| throw RuntimeException("no reference data implemented") | ||
| } | ||
| } | ||
| } | ||
| private val chargeLocationsDao = db.chargeLocationsDao() | ||
|
|
||
| fun getChargepoints( | ||
| bounds: LatLngBounds, | ||
| zoom: Float, | ||
| filters: FilterValues? | ||
| ): LiveData<Resource<List<ChargepointListItem>>> { | ||
| val api = api.value!! | ||
| return liveData { | ||
| val refData = referenceData.await() | ||
| val result = api.getChargepoints(refData, bounds, zoom, filters) | ||
|
|
||
| emit(result) | ||
| } | ||
| } | ||
|
|
||
| @Query("SELECT * FROM chargelocation") | ||
| fun getAllChargeLocations(): LiveData<List<ChargeLocation>> | ||
| fun getChargepointsRadius( | ||
| location: LatLng, | ||
| radius: Int, | ||
| zoom: Float, | ||
| filters: FilterValues? | ||
| ): LiveData<Resource<List<ChargepointListItem>>> { | ||
| val api = api.value!! | ||
| return liveData { | ||
| val refData = referenceData.await() | ||
| val result = | ||
| api.getChargepointsRadius(refData, location, radius, zoom, filters) | ||
|
|
||
| @Query("SELECT * FROM chargelocation") | ||
| suspend fun getAllChargeLocationsAsync(): List<ChargeLocation> | ||
| emit(result) | ||
| } | ||
| } | ||
|
|
||
| @Query("SELECT * FROM chargelocation") | ||
| fun getAllChargeLocationsBlocking(): List<ChargeLocation> | ||
| fun getChargepointDetail( | ||
| id: Long | ||
| ): LiveData<Resource<ChargeLocation>> { | ||
| return liveData { | ||
| val refData = referenceData.await() | ||
| val result = api.value!!.getChargepointDetail(refData, id) | ||
| emit(result) | ||
| } | ||
| } | ||
|
|
||
| @Query("SELECT * FROM chargelocation WHERE lat >= :lat1 AND lat <= :lat2 AND lng >= :lng1 AND lng <= :lng2") | ||
| suspend fun getChargeLocationsInBoundsAsync( | ||
| lat1: Double, | ||
| lat2: Double, | ||
| lng1: Double, | ||
| lng2: Double | ||
| ): List<ChargeLocation> | ||
| fun getFilters(sp: StringProvider) = referenceData.map { data -> | ||
| api.value!!.getFilters(data, sp) | ||
| } | ||
| } |
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