tasks/app/src/main/java/org/tasks/tags/TagPickerViewHolder.kt

package org.tasks.tags

import android.content.Context
import android.view.View
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import org.tasks.R
import org.tasks.data.TagData
import org.tasks.databinding.RowTagPickerBinding
import org.tasks.themes.DrawableUtil

class TagPickerViewHolder internal constructor(
    private val context: Context,
    binding: RowTagPickerBinding,
    private val callback: (TagData, TagPickerViewHolder) -> Unit
) : RecyclerView.ViewHolder(binding.root) {

    val isChecked: Boolean
        get() = checkBox.isChecked

    private val text: TextView = binding.text
    private val checkBox: CheckBoxTriStates = binding.checkbox.apply {
        setOnCheckedChangeListener { _, _ ->  onCheckedChanged() }
    }
    private var tagData: TagData? = null

    private fun onClickRow() {
        if (tagData!!.id == null) {
            callback(tagData!!, this)
        } else {
            checkBox.toggle()
        }
    }

    private fun onCheckedChanged() {
        callback(tagData!!, this)
    }

    fun bind(
            tagData: TagData, color: Int, icon: Int?, state: CheckBoxTriStates.State) {
        var icon = icon
        this.tagData = tagData
        if (tagData.id == null) {
            text.text = context.getString(R.string.create_new_tag, tagData.name)
            icon = R.drawable.ic_outline_add_24px
            checkBox.visibility = View.GONE
        } else {
            text.text = tagData.name
            if (state == CheckBoxTriStates.State.CHECKED) {
                checkBox.isChecked = true
            } else {
                updateCheckbox(state)
            }
            if (icon == null) {
                icon = R.drawable.ic_outline_label_24px
            }
        }
        DrawableUtil.setLeftDrawable(context, text, icon)
        DrawableUtil.setTint(DrawableUtil.getLeftDrawable(text), color)
    }

    fun updateCheckbox(state: CheckBoxTriStates.State) {
        checkBox.setState(state, false)
        checkBox.visibility = View.VISIBLE
    }

    init {
        binding.tagRow.setOnClickListener { onClickRow() }
    }
}