package <%= java_package %>

import android.app.Activity
import android.content.pm.PackageManager
import android.content.res.Configuration
import android.net.Uri
import android.os.Bundle
import android.util.Log
import androidx.activity.ComponentActivity
import androidx.activity.compose.BackHandler
import androidx.activity.compose.setContent
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.animation.*
import androidx.compose.animation.core.tween
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.core.content.FileProvider
import java.io.File

class MainActivity : ComponentActivity() {

    companion object {
        private const val TAG = "<%= display_name %>"
        init { System.loadLibrary("<%= lib_name %>") }
    }

    external fun nativeSetActivity(activity: Activity)
    external fun nativeStartBeam()

    // ── Camera launchers ──────────────────────────────────────────────────
    private var cameraPhotoUri: Uri? = null

    private val cameraPhotoLauncher =
        registerForActivityResult(ActivityResultContracts.TakePicture()) { success ->
            MobBridge.handleCameraPhotoResult(if (success) cameraPhotoUri else null)
        }

    private val cameraVideoLauncher =
        registerForActivityResult(ActivityResultContracts.CaptureVideo()) { success ->
            MobBridge.handleCameraVideoResult(if (success) cameraPhotoUri else null)
        }

    fun launchCameraPhoto() {
        val file = File(cacheDir, "mob_cam_${System.currentTimeMillis()}.jpg")
        cameraPhotoUri = FileProvider.getUriForFile(this, "$packageName.fileprovider", file)
        cameraPhotoLauncher.launch(cameraPhotoUri!!)
    }

    fun launchCameraVideo() {
        val file = File(cacheDir, "mob_cam_${System.currentTimeMillis()}.mp4")
        cameraPhotoUri = FileProvider.getUriForFile(this, "$packageName.fileprovider", file)
        cameraVideoLauncher.launch(cameraPhotoUri!!)
    }

    // ── Photo picker launcher ─────────────────────────────────────────────
    private val photosPickerLauncher =
        registerForActivityResult(ActivityResultContracts.PickMultipleVisualMedia()) { uris ->
            MobBridge.handlePhotosResult(uris)
        }

    fun launchPhotosPicker(max: Int) {
        photosPickerLauncher.launch(
            androidx.activity.result.PickVisualMediaRequest(
                androidx.activity.result.contract.ActivityResultContracts.PickVisualMedia.ImageAndVideo
            )
        )
    }

    // ── File picker launcher ──────────────────────────────────────────────
    private val filePickerLauncher =
        registerForActivityResult(ActivityResultContracts.OpenMultipleDocuments()) { uris ->
            MobBridge.handleFilesResult(uris)
        }

    fun launchFilePicker() {
        filePickerLauncher.launch(arrayOf("*/*"))
    }

    // ── QR scanner launcher ───────────────────────────────────────────────
    // For QR scanning we use an intent to a helper activity (MobScannerActivity)
    // that uses CameraX + ML Kit. It returns the scanned value as a result string.
    private val scannerLauncher =
        registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
            val value = result.data?.getStringExtra("scan_value")
            val type  = result.data?.getStringExtra("scan_type") ?: "qr"
            MobBridge.handleScanResult(value, type)
        }

    fun launchQrScanner() {
        val intent = android.content.Intent(this, MobScannerActivity::class.java)
        scannerLauncher.launch(intent)
    }

    // ── Permission result ─────────────────────────────────────────────────
    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (requestCode == 9001) {
            val granted = grantResults.isNotEmpty() &&
                grantResults.all { it == PackageManager.PERMISSION_GRANTED }
            MobBridge.onPermissionResult(granted)
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        MobBridge.init(this)

        // Forward launcher-supplied env vars into the BEAM process. Set BEFORE
        // nativeStartBeam below so the BEAM (and Mob.Dist in particular) sees
        // them when it reads getenv()/System.get_env/1.
        //
        //   mob_node_suffix — appended to the configured node name
        //                     (`<app>_android` → `<app>_android_<suffix>`).
        //                     Lets multiple Android phones running the same
        //                     app coexist in Mac's shared EPMD.
        //   mob_dist_port   — Erlang dist listen port (default 9100).
        intent?.extras?.getString("mob_node_suffix")?.takeIf { it.isNotEmpty() }?.let { suffix ->
            android.system.Os.setenv("MOB_NODE_SUFFIX", suffix, true)
            Log.i(TAG, "onCreate: MOB_NODE_SUFFIX=$suffix")
        }

        intent?.extras?.getInt("mob_dist_port", -1)?.takeIf { it > 0 }?.let { port ->
            android.system.Os.setenv("MOB_DIST_PORT", port.toString(), true)
            Log.i(TAG, "onCreate: MOB_DIST_PORT=$port")
        }

        // Check if launched from a notification tap
        intent?.extras?.getString("mob_notification_json")?.let { json ->
            MobBridge.setLaunchNotification(json)
        }

        setContent {
            val state by MobBridge.rootState

            BackHandler(enabled = state.node != null) { MobBridge.nativeHandleBack() }

            AnimatedContent(
                targetState   = state,
                contentKey    = { it.navKey },
                transitionSpec = {
                    when (targetState.transition) {
                        "push" ->
                            slideInHorizontally(animationSpec = tween(300)) { it } togetherWith
                            slideOutHorizontally(animationSpec = tween(300)) { -it / 3 }
                        "pop" ->
                            slideInHorizontally(animationSpec = tween(300)) { -it / 3 } togetherWith
                            slideOutHorizontally(animationSpec = tween(300)) { it }
                        "reset" ->
                            fadeIn(animationSpec = tween(250)) togetherWith
                            fadeOut(animationSpec = tween(250))
                        else ->
                            EnterTransition.None togetherWith ExitTransition.None
                    }
                },
                label = "nav"
            ) { s ->
                s.node?.let { RenderNode(it, modifier = Modifier.fillMaxSize()) }
            }
        }

        Log.i(TAG, "onCreate — handing off to BEAM")
        nativeSetActivity(this)
        Thread({ nativeStartBeam() }, "beam-main").start()
    }

    // Manifest declares `android:configChanges` including `uiMode`, so a
    // dark/light toggle delivers here instead of recreating the activity.
    // Forward to MobBridge so Mob.Device :appearance subscribers can react
    // (e.g. re-resolve Mob.Theme.Adaptive without an app restart).
    override fun onConfigurationChanged(newConfig: Configuration) {
        super.onConfigurationChanged(newConfig)
        val nightMode = newConfig.uiMode and Configuration.UI_MODE_NIGHT_MASK
        val scheme = if (nightMode == Configuration.UI_MODE_NIGHT_YES) "dark" else "light"
        MobBridge.notifyColorSchemeChanged(scheme)
    }
}