/**
 * Created by Yosua on 30/10/2023
 */
class MyLearningCourseAdapter(
    private val selectedProgram: String? = "",
    private val isHistoryPage: Boolean = false
) : PagingDataAdapter<ModelResponseGetMyLearningCourse.LearningCourse, RecyclerView.ViewHolder>(
    DiffCallback
) {
    var courseListener: CourseListener? = null
    var searchOtherCourseListener: SearchOtherCourseListener? = null

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

        override fun areContentsTheSame(
            oldItem: ModelResponseGetMyLearningCourse.LearningCourse,
            newItem: ModelResponseGetMyLearningCourse.LearningCourse
        ): Boolean {
            return oldItem == newItem
        }
    }

    inner class CourseViewHolder(val binding: ItemCourseBinding) :
        RecyclerView.ViewHolder(binding.root) {
        fun bindData(course: ModelResponseGetMyLearningCourse.LearningCourse) {
           
        }

    }

    inner class SearchOtherCourseViewHolder(val binding: LayoutSearchOtherCourseBinding) :
        RecyclerView.ViewHolder(binding.root) {
        fun bindData() {
            binding.apply {
                btnSearchOtherCourse.setOnClickListener {
                    searchOtherCourseListener?.onSearchOtherCourseSelected()
                }
            }
        }
    }

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        if (itemCount > 1) {
            if (holder.itemViewType == VIEW_TYPE_SEARCH_OTHER_COURSE) {
                val searchOtherCourseViewHolder = holder as SearchOtherCourseViewHolder
                searchOtherCourseViewHolder.bindData()
            } else {
                val item = getItem(position)
                if (item != null) {
                    val courseViewHolder = holder as CourseViewHolder
                    courseViewHolder.bindData(item)
                }
            }
        }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        return when (viewType) {
            VIEW_TYPE_SEARCH_OTHER_COURSE -> {
                val binding =
                    LayoutSearchOtherCourseBinding.inflate(LayoutInflater.from(parent.context), parent,false)
                SearchOtherCourseViewHolder(binding)
            }
            else -> {
                val binding =
                    ItemCourseBinding.inflate(LayoutInflater.from(parent.context), parent, false)
                CourseViewHolder(binding)
            }
        }
    }

    override fun getItemViewType(position: Int): Int {
        return if (isHistoryPage && position == itemCount - 1) {
            VIEW_TYPE_SEARCH_OTHER_COURSE
        } else {
            VIEW_TYPE_COURSE
        }
    }

    override fun getItemCount(): Int {
        return if (isHistoryPage) {
            super.getItemCount() + 1
        } else {
            super.getItemCount()
        }
    }

    interface CourseListener {
        fun onCourseSelected(course: ModelResponseGetMyLearningCourse.LearningCourse)
    }

    interface SearchOtherCourseListener {
        fun onSearchOtherCourseSelected()
    }

    companion object {
        const val VIEW_TYPE_COURSE = 1
        const val VIEW_TYPE_SEARCH_OTHER_COURSE = 2
    }

}