LarryHsiao/Nyx

package com.larryhsiao.nyx.jot

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.larryhsiao.nyx.NyxApplication
import com.larryhsiao.nyx.core.jots.*
import kotlinx.coroutines.Dispatchers.IO
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext

/**
 * ViewModels for jot list.
 */
class JotsViewModel(private val app: NyxApplication) : ViewModel() {
    private val jots = MutableLiveData<List<Jot>>()

    fun jots(): LiveData<List<Jot>> = jots

    fun preferAllJots() = preferJots("")

    fun preferJots(ids: LongArray) = viewModelScope.launch {
        val result : List<Jot> = withContext(IO) { app.nyx().jots().byIds(ids) }
        jots.value = result
    }

    fun preferJots(keyword: String) = viewModelScope.launch {
        val result: List<Jot> = withContext(IO) {
            app.nyx().jots().byKeyword(keyword)
        }
        jots.value = result
    }
}