csamsclient/lib/src/main/java/com/gyf/lib/uikit/Snackbar.kt

package com.gyf.lib.uikit

import androidx.compose.material.ScaffoldState
import androidx.compose.material.SnackbarDuration
import androidx.compose.material.SnackbarResult
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.livedata.observeAsState
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewmodel.compose.viewModel
import com.orhanobut.logger.Logger
import kotlinx.coroutines.launch


data class SnackBar(
    val message: String?,
    val actionLabel: String? = null,
    val duration: SnackbarDuration = SnackbarDuration.Short,
    val callback: () -> Unit?
)

/**
 * snackbar
 *
 */
class ScaffoldModel : ViewModel() {
    private val _data = MutableLiveData<SnackBar?>()
    val data: LiveData<SnackBar?> = _data

    fun update(message: String? = null, actionLabel: String? = null, callback: () -> Unit? = {}) {
        if (message == null) {
            _data.postValue(null)
        } else {
            _data.postValue(
                SnackBar(message = message, actionLabel = actionLabel, callback = callback)
            )
        }
    }
}


/**
 * 底部提示
 *
 * @param model
 * @param scaffoldState
 */
@Composable
fun ShowSnackbar(model: ScaffoldModel = viewModel(), scaffoldState: ScaffoldState) {
    val snackBar: SnackBar? by model.data.observeAsState()
    snackBar?.apply {
        if (message != null) {
            LaunchedEffect(scaffoldState) {
                launch {
                    if (actionLabel != null) {
                        val result = scaffoldState.snackbarHostState.showSnackbar(
                            message = message, actionLabel = actionLabel,
                            duration = duration

                        )
                        when (result) {
                            SnackbarResult.ActionPerformed -> {
                                Logger.i("点击操作按钮")
                                callback()
                            }
                            SnackbarResult.Dismissed -> {
                                Logger.d("窗口消失")
                            }
                        }
                    } else {
                        scaffoldState.snackbarHostState.showSnackbar(message = message)
                    }
                    model.update()
                }
            }

        }
    }
}