social-aggregator/app/src/main/java/pl/edu/amu/wmi/socialaggregator/viewholders/PostDetailsRecycler.kt

package pl.edu.amu.wmi.socialaggregator.viewholders

import android.annotation.SuppressLint
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.LinearLayout
import android.widget.TextView
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.recyclerview.widget.RecyclerView
import com.squareup.picasso.Picasso
import io.reactivex.Observable
import pl.edu.amu.wmi.socialaggregator.R
import pl.edu.amu.wmi.socialaggregator.socialplatforms.NotApplicableException
import pl.edu.amu.wmi.socialaggregator.socialplatforms.Post
import pl.edu.amu.wmi.socialaggregator.socialplatforms.SocialPlatform

@SuppressLint("CheckResult")
class PostDetailsRecycler(
    postsObservable: Observable<List<Post>>
) : RecyclerView.Adapter<PostDetailsRecycler.ViewHolder>() {

    val posts = emptyList<Post>().toMutableList()

    init {
        postsObservable
            .subscribe {
                posts.addAll(it)
                notifyDataSetChanged()
            }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val layout = LayoutInflater.from(parent.context)
            .inflate(R.layout.item_post, parent, false) as ConstraintLayout

        val dateTime = layout.findViewById<TextView>(R.id.postDateTimeTextView)
        val postContent = layout.findViewById<TextView>(R.id.postContentTextView)
        val imageView = layout.findViewById<ImageView>(R.id.postSocialImage)
        val imagesContainer = layout.findViewById<LinearLayout>(R.id.imagesContainer)

        return ViewHolder(layout, dateTime, postContent, imageView, imagesContainer)
    }

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

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val post = posts[position]
        holder.dateTime.text = post.dateTime
        holder.postContent.text = post.content
        holder.postContent.visibility = if (post.content.isBlank()) View.GONE else View.VISIBLE

        holder.imageView.setImageResource(post.social.getLogo())

        holder.imagesContainer.apply {
            removeAllViews()
            post.images.forEach {
                val imageView = ImageView(context)
                addView(imageView)

                imageView.apply {
                    (layoutParams as ViewGroup.MarginLayoutParams)
                        .apply {
                            marginEnd = 10
                        }
                }

                Picasso.with(context)
                    .load(it)
                    .placeholder(android.R.drawable.ic_menu_gallery)
                    .resize(250, 250)
                    .centerCrop()
                    .into(imageView)
            }
        }
    }

    class ViewHolder(
        root: ConstraintLayout,
        val dateTime: TextView,
        val postContent: TextView,
        val imageView: ImageView,
        val imagesContainer: LinearLayout

    ) : RecyclerView.ViewHolder(root)

}