package agzam.vyatsu.ui.settings

import agzam.vyatsu.domain.repository.PreferencesRepository
import agzam.vyatsu.update.AppUpdater
import agzam.vyatsu.update.UpdateState
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.launch

class UpdateViewModel(
    private val updater: AppUpdater,
    private val preferencesRepository: PreferencesRepository
) : ViewModel() {

    val updateState: StateFlow<UpdateState> = updater.state

    private val _autoEnabled = MutableStateFlow(false)
    val autoEnabled: StateFlow<Boolean> = _autoEnabled.asStateFlow()

    private val _showFirstRunDialog = MutableStateFlow(false)
    val showFirstRunDialog: StateFlow<Boolean> = _showFirstRunDialog.asStateFlow()

    init {
        viewModelScope.launch {
            _autoEnabled.value = preferencesRepository.autoUpdateEnabled()
            _showFirstRunDialog.value = !preferencesRepository.autoUpdateAsked()
        }
    }

    fun setAutoEnabled(enabled: Boolean) {
        _autoEnabled.value = enabled
        updater.setAutoEnabled(enabled)
        if (enabled && !updater.canRequestInstalls()) {
            updater.openUnknownSourcesSettings()
        }
    }

    fun onFirstRunDecision(enable: Boolean) {
        _showFirstRunDialog.value = false
        viewModelScope.launch {
            preferencesRepository.setAutoUpdateAsked(true)
        }
        setAutoEnabled(enable)
    }

    fun checkNow() = updater.checkForUpdate()

    fun downloadAndInstall() = updater.downloadAndInstall()

    fun installDownloadedApk() = updater.installDownloadedApk()

    fun canRequestInstalls() = updater.canRequestInstalls()

    fun openUnknownSourcesSettings() = updater.openUnknownSourcesSettings()
}