package com.sw.inbound.utils

import android.net.Uri
import androidx.activity.ComponentActivity
import androidx.camera.core.CameraSelector
import androidx.camera.view.CameraController
import androidx.camera.view.LifecycleCameraController
import androidx.camera.view.PreviewView

class CameraUtils(private var activity: ComponentActivity) {

    private var cameraController: LifecycleCameraController? = null
    private var photoCaptureHelper: PhotoCaptureHelper? = null

    //    private var isCameraReady = false
    fun takePhoto(successCallback: (Uri) -> Unit) {
        cameraController?.let {
            if (photoCaptureHelper == null) {
                initCaptureHelper()
            }
        }
        photoCaptureHelper?.let {
            it.addSuccessCallback(successCallback)
            it.bindCameraCallback {
                bind()
            }
            it.takePhoto()
        }
    }

    private var failCallback: (() -> Unit)? = null
    fun addFailCallback(callback: () -> Unit) {
        failCallback = callback
    }

    private fun initCaptureHelper() {
        photoCaptureHelper = PhotoCaptureHelper(
            context = activity,
            cameraController = cameraController!!,
            onError = { msg ->
                //toast(msg)
                failCallback?.invoke()
            }
        )
    }

    fun setPreviewController(previewView: PreviewView?) {
        if (previewView?.controller == null) {
            previewView?.controller = cameraController
        }
    }

    fun initCamera() {
        if (cameraController == null) {
            cameraController = LifecycleCameraController(activity).apply {
                // 必须设置有效的用例
                setEnabledUseCases(
                    CameraController.IMAGE_CAPTURE
                    // or CameraController.VIDEO_CAPTURE
                )
                cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
            }
            bind()
        }

//        if (isCameraReady.not()) {
//            try {
//                cameraController!!.initializationFuture.addListener({
//                    isCameraReady = true
//                    Timber.d("Camera initialized successfully")
//                }, ContextCompat.getMainExecutor(this))
//            } catch (e: Exception) {
//                Timber.d("Camera initialized error = ${e.message}")
//            }
//        }
    }

    fun bind() {
        try {
            cameraController?.bindToLifecycle(activity)
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }

    fun unbind() {
        try {
            cameraController?.unbind()
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }

}