ntfy-android/app/src/main/java/io/heckel/ntfy/ui/DetailAdapter.kt

package io.heckel.ntfy.ui

import android.app.DownloadManager
import android.content.ClipData
import android.content.ClipboardManager
import android.content.Context
import android.content.Intent
import android.graphics.BitmapFactory
import android.net.Uri
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.*
import androidx.core.content.ContextCompat
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter
import androidx.recyclerview.widget.RecyclerView
import androidx.work.OneTimeWorkRequest
import androidx.work.WorkManager
import androidx.work.workDataOf
import io.heckel.ntfy.R
import io.heckel.ntfy.data.Notification
import io.heckel.ntfy.msg.AttachmentDownloadWorker
import io.heckel.ntfy.msg.NotificationDispatcher
import io.heckel.ntfy.util.*
import java.util.*


class DetailAdapter(private val onClick: (Notification) -> Unit, private val onLongClick: (Notification) -> Unit) :
    ListAdapter<Notification, DetailAdapter.DetailViewHolder>(TopicDiffCallback) {
    val selected = mutableSetOf<String>() // Notification IDs

    /* Creates and inflates view and return TopicViewHolder. */
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DetailViewHolder {
        val view = LayoutInflater.from(parent.context)
            .inflate(R.layout.fragment_detail_item, parent, false)
        return DetailViewHolder(view, selected, onClick, onLongClick)
    }

    /* Gets current topic and uses it to bind view. */
    override fun onBindViewHolder(holder: DetailViewHolder, position: Int) {
        holder.bind(getItem(position))
    }

    fun toggleSelection(notificationId: String) {
        if (selected.contains(notificationId)) {
            selected.remove(notificationId)
        } else {
            selected.add(notificationId)
        }
    }

    /* ViewHolder for Topic, takes in the inflated view and the onClick behavior. */
    class DetailViewHolder(itemView: View, private val selected: Set<String>, val onClick: (Notification) -> Unit, val onLongClick: (Notification) -> Unit) :
        RecyclerView.ViewHolder(itemView) {
        private var notification: Notification? = null
        private val priorityImageView: ImageView = itemView.findViewById(R.id.detail_item_priority_image)
        private val dateView: TextView = itemView.findViewById(R.id.detail_item_date_text)
        private val titleView: TextView = itemView.findViewById(R.id.detail_item_title_text)
        private val messageView: TextView = itemView.findViewById(R.id.detail_item_message_text)
        private val newImageView: View = itemView.findViewById(R.id.detail_item_new_dot)
        private val tagsView: TextView = itemView.findViewById(R.id.detail_item_tags_text)
        private val imageView: ImageView = itemView.findViewById(R.id.detail_item_image)
        private val attachmentView: TextView = itemView.findViewById(R.id.detail_item_attachment_text)
        private val menuButton: ImageButton = itemView.findViewById(R.id.detail_item_menu_button)

        fun bind(notification: Notification) {
            this.notification = notification

            val context = itemView.context
            val unmatchedTags = unmatchedTags(splitTags(notification.tags))

            dateView.text = Date(notification.timestamp * 1000).toString()
            messageView.text = formatMessage(notification)
            newImageView.visibility = if (notification.notificationId == 0) View.GONE else View.VISIBLE
            itemView.setOnClickListener { onClick(notification) }
            itemView.setOnLongClickListener { onLongClick(notification); true }
            if (notification.title != "") {
                titleView.visibility = View.VISIBLE
                titleView.text = formatTitle(notification)
            } else {
                titleView.visibility = View.GONE
            }
            if (unmatchedTags.isNotEmpty()) {
                tagsView.visibility = View.VISIBLE
                tagsView.text = context.getString(R.string.detail_item_tags, unmatchedTags.joinToString(", "))
            } else {
                tagsView.visibility = View.GONE
            }
            if (selected.contains(notification.id)) {
                itemView.setBackgroundResource(R.color.primarySelectedRowColor);
            }
            when (notification.priority) {
                1 -> {
                    priorityImageView.visibility = View.VISIBLE
                    priorityImageView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_priority_1_24dp))
                }
                2 -> {
                    priorityImageView.visibility = View.VISIBLE
                    priorityImageView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_priority_2_24dp))
                }
                3 -> {
                    priorityImageView.visibility = View.GONE
                }
                4 -> {
                    priorityImageView.visibility = View.VISIBLE
                    priorityImageView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_priority_4_24dp))
                }
                5 -> {
                    priorityImageView.visibility = View.VISIBLE
                    priorityImageView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_priority_5_24dp))
                }
            }
            val contentUri = notification.attachment?.contentUri
            val fileExists = if (contentUri != null) fileExists(context, contentUri) else false
            if (contentUri != null && fileExists && supportedImage(notification.attachment.type)) {
                try {
                    val resolver = context.applicationContext.contentResolver
                    val bitmapStream = resolver.openInputStream(Uri.parse(contentUri))
                    val bitmap = BitmapFactory.decodeStream(bitmapStream)
                    imageView.setImageBitmap(bitmap)
                    imageView.visibility = View.VISIBLE
                } catch (_: Exception) {
                    imageView.visibility = View.GONE
                }
            } else {
                imageView.visibility = View.GONE
            }
            if (notification.attachment != null) {
                attachmentView.text = formatAttachmentInfo(notification, fileExists)
                attachmentView.visibility = View.VISIBLE
                menuButton.visibility = View.VISIBLE
                menuButton.setOnClickListener { menuView ->
                    val popup = PopupMenu(context, menuView)
                    popup.menuInflater.inflate(R.menu.menu_detail_attachment, popup.menu)

                    val downloadItem = popup.menu.findItem(R.id.detail_item_menu_download)
                    val openItem = popup.menu.findItem(R.id.detail_item_menu_open)
                    val browseItem = popup.menu.findItem(R.id.detail_item_menu_browse)
                    val copyUrlItem = popup.menu.findItem(R.id.detail_item_menu_copy_url)
                    if (contentUri != null && fileExists) {
                        openItem.setOnMenuItemClickListener {
                            context.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(contentUri))) // FIXME try/catch
                            true
                        }
                        browseItem.setOnMenuItemClickListener {
                            context.startActivity(Intent(DownloadManager.ACTION_VIEW_DOWNLOADS))
                            true
                        }
                        copyUrlItem.setOnMenuItemClickListener {
                            val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
                            val clip = ClipData.newPlainText("attachment url", notification.attachment.url)
                            clipboard.setPrimaryClip(clip)
                            Toast
                                .makeText(context, context.getString(R.string.detail_copied_to_clipboard_message), Toast.LENGTH_LONG)
                                .show()
                            true
                        }
                        downloadItem.isVisible = false
                    } else {
                        openItem.isVisible = false
                        browseItem.isVisible = false
                        downloadItem.setOnMenuItemClickListener {
                            scheduleAttachmentDownload(context, notification)
                            true
                        }
                    }

                    popup.show()
                }
            } else {
                attachmentView.visibility = View.GONE
                menuButton.visibility = View.GONE
            }
        }

        private fun scheduleAttachmentDownload(context: Context, notification: Notification) {
            Log.d(TAG, "Enqueuing work to download attachment")
            val workManager = WorkManager.getInstance(context)
            val workRequest = OneTimeWorkRequest.Builder(AttachmentDownloadWorker::class.java)
                .setInputData(workDataOf("id" to notification.id))
                .build()
            workManager.enqueue(workRequest)
        }
    }

    object TopicDiffCallback : DiffUtil.ItemCallback<Notification>() {
        override fun areItemsTheSame(oldItem: Notification, newItem: Notification): Boolean {
            return oldItem.id == newItem.id
        }

        override fun areContentsTheSame(oldItem: Notification, newItem: Notification): Boolean {
            return oldItem == newItem
        }
    }

    companion object {
        const val TAG = "NtfyDetailAdapter"
    }
}