launcher/app/src/main/java/com/finnmglas/launcher/choose/AppsRecyclerAdapter.kt

package com.finnmglas.launcher.choose

import android.app.Activity
import android.content.Context
import android.content.Intent
import android.content.pm.ApplicationInfo
import android.content.pm.PackageManager
import android.net.Uri
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.finnmglas.launcher.R
import com.finnmglas.launcher.extern.FontAwesome
import com.finnmglas.launcher.extern.REQUEST_CHOOSE_APP
import com.finnmglas.launcher.extern.REQUEST_UNINSTALL


class AppsRecyclerAdapter(val activity: Activity, val action: String?, val forApp: String?):
    RecyclerView.Adapter<AppsRecyclerAdapter.ViewHolder>() {

    private val appsList: MutableList<AppInfo>

    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
        View.OnClickListener {
        var textView: TextView = itemView.findViewById(R.id.choose_row_app_name)
        var img: ImageView = itemView.findViewById(R.id.choose_row_app_icon) as ImageView
        var delete: FontAwesome = itemView.findViewById(R.id.choose_row_app_delete)

        override fun onClick(v: View) {
            val pos = adapterPosition
            val context: Context = v.context
            val appPackageName = appsList[pos].packageName.toString()

            when (action){
                "view" -> {
                    val launchIntent: Intent = context.packageManager
                        .getLaunchIntentForPackage(appPackageName)!!
                    context.startActivity(launchIntent)
                }
                "pick" -> {
                    val returnIntent = Intent()
                    returnIntent.putExtra("value", appPackageName)
                    returnIntent.putExtra("forApp", forApp)
                    activity.setResult(REQUEST_CHOOSE_APP, returnIntent)
                    activity.finish()
                }
            }
        }

        init { itemView.setOnClickListener(this) }
    }

    override fun onBindViewHolder(viewHolder: ViewHolder, i: Int) {
        val appLabel = appsList[i].label.toString()
        val appPackageName = appsList[i].packageName.toString()
        val appIcon = appsList[i].icon
        val isSystemApp = appsList[i].isSystemApp

        viewHolder.textView.text = appLabel
        viewHolder.img.setImageDrawable(appIcon)

        viewHolder.delete.setOnClickListener{
            val intent = Intent(Intent.ACTION_UNINSTALL_PACKAGE)
            intent.data = Uri.parse("package:$appPackageName")
            intent.putExtra(Intent.EXTRA_RETURN_RESULT, true)
            activity.startActivityForResult(intent, REQUEST_UNINSTALL)
        }

        viewHolder.delete.visibility = if(isSystemApp || action == "pick") View.INVISIBLE else View.VISIBLE
    }

    override fun getItemCount(): Int { return appsList.size }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val inflater = LayoutInflater.from(parent.context)
        val view: View = inflater.inflate(R.layout.recycler_apps_row, parent, false)
        return ViewHolder(view)
    }

    init {
        val pm: PackageManager = activity.packageManager
        appsList = ArrayList()
        val i = Intent(Intent.ACTION_MAIN, null)
        i.addCategory(Intent.CATEGORY_LAUNCHER)
        val allApps = pm.queryIntentActivities(i, 0)
        for (ri in allApps) {
            val app = AppInfo()
            app.label = ri.loadLabel(pm)
            app.packageName = ri.activityInfo.packageName
            app.icon = ri.activityInfo.loadIcon(pm)
            appsList.add(app)
        }
        appsList.sortBy { it.label.toString() }
    }
}