implement navigation feature

app/src/main/java/com/example/kocelainterview/data/local_data_source/ShipDao.kt

@@ -0,0 +1,15 @@
+package com.example.kocelainterview.data.local_data_source
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+
+@Dao
+interface ShipDao {
+    @Query("SELECT * FROM ships")
+    fun getShips(): List<ShipEntity>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    fun saveShips(ships: List<ShipEntity>)
+}

app/src/main/java/com/example/kocelainterview/data/local_data_source/ShipDatabase.kt

@@ -0,0 +1,9 @@
+package com.example.kocelainterview.data.local_data_source
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+
+@Database(entities = [ShipEntity::class], version = 1)
+abstract class ShipDatabase:RoomDatabase (){
+    abstract fun shipDao():ShipDao
+}

app/src/main/java/com/example/kocelainterview/data/local_data_source/ShipEntity.kt

@@ -0,0 +1,32 @@
+package com.example.kocelainterview.data.local_data_source
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.example.kocelainterview.data.remote.dto.ShipDto
+
+@Entity(tableName = "ships")
+data class ShipEntity(
+    @PrimaryKey val ship_id: String,
+    val active: Boolean,
+    val image: String?,
+    val ship_name: String,
+    val weight_kg: Int,
+    val year_built: Int
+)
+
+
+fun ShipEntity.toShipDto(): ShipDto {
+    return ShipDto(
+        ship_id = ship_id,
+        active = active,
+        image = image,
+        ship_name = ship_name,
+        weight_kg = weight_kg,
+        year_built = year_built
+
+    )
+}
+
+
+
+

app/src/main/java/com/example/kocelainterview/data/remote/dto/ShipDto.kt

@@ -1,34 +1,48 @@
 package com.example.kocelainterview.data.remote.dto
 
 
+import com.example.kocelainterview.data.local_data_source.ShipEntity
 import com.example.kocelainterview.domain.model.Ship
 
 
 
 data class ShipDto(
-    val abs: Int,
+   // val abs: Int,
     val active: Boolean,
-    val attempted_landings: Any,
-    val `class`: Int,
-    val course_deg: Any,
-    val home_port: String,
+//    val attempted_landings: Any?,
+//    val `class`: Int,
+//    val course_deg: Any,
+   // val home_port: String,
     val image: String,
-    val imo: Int,
-    val mmsi: Int,
-    val roles: List<String>,
+//    val imo: Int,
+//    val mmsi: Int,
+//    val roles: List<String>,
     val ship_id: String,
-    val ship_model: Any,
+  //  val ship_model: Any?,
     val ship_name: String,
-    val ship_type: String,
-    val speed_kn: Int,
-    val status: String,
-    val successful_landings: Any,
-    val url: String,
+//    val ship_type: String,
+  //  val speed_kn: Int,
+//    val status: String,
+//    val successful_landings: Any?,
+//    val url: String,
     val weight_kg: Int,
-    val weight_lbs: Int,
+   // val weight_lbs: Int,
     val year_built: Int
 )
 
+fun ShipDto.toEntity(): ShipEntity {
+    return ShipEntity(
+        ship_id = ship_id,
+        active = active,
+        image = image,
+        ship_name = ship_name,
+        weight_kg = weight_kg,
+        year_built = year_built
+    )
+}
+
+
+
 
 
 fun ShipDto.toShip():Ship{

app/src/main/java/com/example/kocelainterview/data/repository/ShipRepositoryImpl.kt

@@ -1,19 +1,36 @@
 package com.example.kocelainterview.data.repository
 
+import com.example.kocelainterview.data.local_data_source.ShipDao
+import com.example.kocelainterview.data.local_data_source.toShipDto
 import com.example.kocelainterview.data.remote.api_service.ShipsApi
 import com.example.kocelainterview.data.remote.dto.ShipDetailDto
 import com.example.kocelainterview.data.remote.dto.ShipDto
+import com.example.kocelainterview.data.remote.dto.toEntity
 import com.example.kocelainterview.domain.repository_interface.ShipRepository
 import javax.inject.Inject
 
 class ShipRepositoryImpl @Inject constructor(
-    private val api:ShipsApi
-) :ShipRepository{
+    private val api: ShipsApi,
+    private val shipDao: ShipDao
+) : ShipRepository {
+
     override suspend fun getShips(): List<ShipDto> {
-       return api.getShips()
+        // Check Room database first
+        val cachedShips = shipDao.getShips()
+        if (cachedShips.isNotEmpty()) {
+            return cachedShips.map { it.toShipDto() }
+        }
+
+        // Fetch from API if not found in cache
+        val ships = api.getShips()
+
+        // Save to Room database
+        shipDao.saveShips(ships.map { it.toEntity() })
+
+        return ships
     }
 
     override suspend fun getShipById(shipId: String): ShipDetailDto {
         return api.getShipById(shipId)
     }
-}
+}

app/src/main/java/com/example/kocelainterview/domain/model/Ship.kt

@@ -5,16 +5,9 @@ package com.example.kocelainterview.domain.model
 data class Ship(
 
     val active: Boolean,
-   // val home_port: String,
     val image: String?,
     val ship_id: String,
-    //val ship_model: Any,
     val ship_name: String,
-    //val ship_type: String,
-//    val speed_kn: Int,
-//    val status: String,
     val weight_kg: Int,
-   // val url: String,
-    //val weight_lbs: Int,
     val year_built: Int
 )

app/src/test/java/com/example/kocelainterview/domain/use_case/get_ships/GetShipsUseCaseTest.kt

@@ -3,7 +3,6 @@ package com.example.kocelainterview.domain.use_case.get_ships
 import com.example.kocelainterview.common.core.Resource
 import com.example.kocelainterview.data.remote.dto.ShipDto
 import com.example.kocelainterview.data.remote.dto.toShip
-import com.example.kocelainterview.domain.model.Ship
 import com.example.kocelainterview.domain.repository_interface.ShipRepository
 import kotlinx.coroutines.flow.toList
 import kotlinx.coroutines.runBlocking