# NotesRepository.kt

    /*
     * The MIT License
     *
     * Original work sponsored and donated by The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     * Copyright (C) 2020 The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy of
     * this software and associated documentation files (the "Software"), to deal in
     * the Software without restriction, including without limitation the rights to
     * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     * of the Software, and to permit persons to whom the Software is furnished to do
     * so, subject to the following conditions:
     *
     *
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     *
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     */

    package dk.nsp.domain.repository

    import android.content.Context
    import androidx.lifecycle.LiveData
    import androidx.lifecycle.MutableLiveData
    import dk.nsp.api.getBackendApiLayer
    import dk.nsp.models.Note
    import dk.nsp.shared.ResultWrapper
    import dk.nsp.shared.Success
    import dk.nsp.shared.mapSuccess
    import dk.nsp.shared.util.asyncDefault
    import kotlinx.coroutines.CoroutineScope
    import kotlinx.coroutines.Deferred

    class NotesRepository(context: Context): ClearableRepository {
        private val notesController = context.getBackendApiLayer().notesController

        private val _notes: MutableLiveData<List<Note>> = MutableLiveData()
        val notes: LiveData<List<Note>> = _notes

        fun getNotes(
            scope: CoroutineScope,
            episodeOfCareIdentifier: String
        ): Deferred<ResultWrapper<List<Note>>> = scope.asyncDefault {
            if (_notes.value == null) {
                val notesRes = notesController.getNotes(this, episodeOfCareIdentifier).await()

                notesRes.mapSuccess {
                    val notesDomain = it

                    _notes.postValue(notesDomain)

                    notesDomain
                }
            } else {
                // Use cache..
                Success(_notes.value!!)
            }
        }

        override fun clear() {
            _notes.value = null
        }
    }