package com.myapplist

import android.content.Intent
import android.content.pm.ApplicationInfo
import android.content.pm.PackageManager
import android.content.pm.ResolveInfo
import com.facebook.fbreact.specs.NativeMyAppListSpec
import com.facebook.react.bridge.Arguments
import com.facebook.react.bridge.Promise
import com.facebook.react.bridge.ReactApplicationContext
import com.facebook.react.bridge.WritableArray
import com.facebook.react.bridge.WritableMap
import com.facebook.react.module.annotations.ReactModule

@ReactModule(name = MyAppListModule.NAME)
class MyAppListModule(reactContext: ReactApplicationContext) :
  NativeMyAppListSpec(reactContext) {

  override fun getName(): String {
    return NAME
  }

  override fun getInstalledApps(promise: Promise) {
    try {
      val packageManager = reactApplicationContext.packageManager
      val result: WritableArray = Arguments.createArray()
      val uniquePackages = mutableSetOf<String>()
      
      // Get user-facing apps (apps with launcher intent)
      val launcherIntent = Intent(Intent.ACTION_MAIN).apply {
        addCategory(Intent.CATEGORY_LAUNCHER)
      }
      val launcherApps = packageManager.queryIntentActivities(launcherIntent, 0)
      
      // Add launcher apps to the result
      for (resolveInfo in launcherApps) {
        val packageName = resolveInfo.activityInfo.packageName
        if (!uniquePackages.contains(packageName)) {
          uniquePackages.add(packageName)
          addAppToResult(packageManager, packageName, result)
        }
      }
      
      // Get sharing apps
      val shareIntent = Intent(Intent.ACTION_SEND).apply {
        type = "*/*"
      }
      val shareApps = packageManager.queryIntentActivities(shareIntent, 0)
      
      for (resolveInfo in shareApps) {
        val packageName = resolveInfo.activityInfo.packageName
        if (!uniquePackages.contains(packageName)) {
          uniquePackages.add(packageName)
          addAppToResult(packageManager, packageName, result)
        }
      }
      
      // Get browser apps
      val browserIntent = Intent(Intent.ACTION_VIEW).apply {
        addCategory(Intent.CATEGORY_BROWSABLE)
        data = android.net.Uri.parse("http://")
      }
      val browserApps = packageManager.queryIntentActivities(browserIntent, 0)
      
      for (resolveInfo in browserApps) {
        val packageName = resolveInfo.activityInfo.packageName
        if (!uniquePackages.contains(packageName)) {
          uniquePackages.add(packageName)
          addAppToResult(packageManager, packageName, result)
        }
      }
      
      // Get camera apps
      val cameraIntent = Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE)
      val cameraApps = packageManager.queryIntentActivities(cameraIntent, 0)
      
      for (resolveInfo in cameraApps) {
        val packageName = resolveInfo.activityInfo.packageName
        if (!uniquePackages.contains(packageName)) {
          uniquePackages.add(packageName)
          addAppToResult(packageManager, packageName, result)
        }
      }
      
      // Get gallery/photo apps
      val galleryIntent = Intent(Intent.ACTION_PICK).apply {
        type = "image/*"
      }
      val galleryApps = packageManager.queryIntentActivities(galleryIntent, 0)
      
      for (resolveInfo in galleryApps) {
        val packageName = resolveInfo.activityInfo.packageName
        if (!uniquePackages.contains(packageName)) {
          uniquePackages.add(packageName)
          addAppToResult(packageManager, packageName, result)
        }
      }
      
      // Get music/media apps
      val musicIntent = Intent(Intent.ACTION_VIEW).apply {
        type = "audio/*"
      }
      val musicApps = packageManager.queryIntentActivities(musicIntent, 0)
      
      for (resolveInfo in musicApps) {
        val packageName = resolveInfo.activityInfo.packageName
        if (!uniquePackages.contains(packageName)) {
          uniquePackages.add(packageName)
          addAppToResult(packageManager, packageName, result)
        }
      }
      
      promise.resolve(result)
    } catch (e: Exception) {
      promise.reject("GET_APPS_ERROR", "Failed to get installed apps: ${e.message}")
    }
  }
  
  private fun addAppToResult(packageManager: PackageManager, packageName: String, result: WritableArray) {
    try {
      val packageInfo = packageManager.getPackageInfo(packageName, 0)
      val applicationInfo = packageManager.getApplicationInfo(packageName, 0)
      
      // Only include user-installed apps or system apps that are user-facing
      if ((applicationInfo.flags and ApplicationInfo.FLAG_SYSTEM) == 0 || 
          isUserFacingSystemApp(packageManager, packageName)) {
        
        val app: WritableMap = Arguments.createMap()
        
        app.putString("packageName", packageName)
        app.putString("appName", packageManager.getApplicationLabel(applicationInfo).toString())
        app.putString("versionName", packageInfo.versionName ?: "Unknown")
        app.putInt("versionCode", packageInfo.versionCode)
        app.putBoolean("isSystemApp", (applicationInfo.flags and ApplicationInfo.FLAG_SYSTEM) != 0)
        
        result.pushMap(app)
      }
    } catch (e: Exception) {
      // Skip this package if we can't get its info
    }
  }
  
  private fun isUserFacingSystemApp(packageManager: PackageManager, packageName: String): Boolean {
    try {
      // Check if the system app has a launcher intent (user-facing)
      val launcherIntent = Intent(Intent.ACTION_MAIN).apply {
        addCategory(Intent.CATEGORY_LAUNCHER)
        setPackage(packageName)
      }
      val activities = packageManager.queryIntentActivities(launcherIntent, 0)
      return activities.isNotEmpty()
    } catch (e: Exception) {
      return false
    }
  }

  companion object {
    const val NAME = "MyAppList"
  }
}