PolyBooks/sdp_polyBooks

package com.github.polybooks.activities

import android.content.Intent
import android.os.Bundle
import android.widget.Button
import android.util.Log
import android.widget.RatingBar
import android.widget.TextView
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.github.polybooks.R
import com.github.polybooks.core.LoggedUser
import com.github.polybooks.core.Sale
import com.github.polybooks.utils.GlobalVariables.EXTRA_SELLER_UID
import com.github.polybooks.utils.StringsManip
import com.google.firebase.auth.ktx.auth
import com.google.firebase.ktx.Firebase
import com.github.polybooks.core.BookRating
import com.github.polybooks.database.*
import com.github.polybooks.utils.INTERNET_PRICE_UNAVAILABLE
import com.github.polybooks.utils.getInternetPrice
import com.google.firebase.auth.FirebaseAuth

/**
 * This activity displays the detailed product information of a particular
 * registered sale given in .putExtra to the activity
 */
class SaleInformationActivity: AppCompatActivity() {

    lateinit var bookDB: BookDatabase

    val firebaseAuth: FirebaseAuth = FirebaseAuth.getInstance()

    companion object {
        const val EXTRA_SALE_INFORMATION: String = "EXTRA_SALE_INFORMATION"
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_sale_information)

        val sale = (intent.getSerializableExtra(EXTRA_SALE_INFORMATION) as Sale)

        fillSale(sale)

        findViewById<Button>(R.id.locate_user).setOnClickListener {
            val intent = Intent(this, GPSActivity::class.java).apply {
                putExtra(EXTRA_SELLER_UID, (sale.seller as LoggedUser).uid)
                putExtra(EXTRA_MESSAGE2, Firebase.auth.currentUser?.uid) }
            startActivity(intent)
        }

        rating(sale)
    }

    private fun fillSale(sale: Sale){

        val sale = (intent.getSerializableExtra(EXTRA_SALE_INFORMATION) as Sale)

        findViewById<TextView>(R.id.sale_information_title).text = sale.book.title
        findViewById<TextView>(R.id.sale_information_edition).text = sale.book.edition
        findViewById<TextView>(R.id.sale_information_authors).text = StringsManip.listAuthorsToString(sale.book.authors)
        findViewById<TextView>(R.id.sale_information_book_format).text = sale.book.format
        findViewById<TextView>(R.id.sale_information_condition).text = sale.condition.name
        findViewById<TextView>(R.id.sale_information_price).text = sale.price.toString()
        findViewById<TextView>(R.id.sale_information_book_seller).text = (sale.seller as LoggedUser).pseudo
    }

    private fun rating(sale: Sale){
        bookDB = Database.bookDatabase(this)

        val ratingBar: RatingBar = findViewById(R.id.sale_information_rating)
        ratingBar.rating = 0f

        bookDB.getRating(sale.book.isbn).thenAccept { bookRating ->
            val hasAlreadyVoted = bookRating.getUserVote()
            if (hasAlreadyVoted != null) {
                ratingBar.rating = hasAlreadyVoted.toFloat()
                ratingBar.setIsIndicator(true)
            }
        }

        ratingBar.setOnRatingBarChangeListener { bar, rating, _ ->
            BookRating.bookRatingRef.document(sale.book.isbn)
                .get()
                .addOnSuccessListener { document ->
                    if (document != null && document.data != null) {
                        // rating for the book exists
                        val bookRating = BookRating(document.data!!)

                        if (bookRating.getUserVote() != null) {
                            // User has already voted
                            Toast.makeText(this, "You have already voted", Toast.LENGTH_SHORT).show()
                        } else {
                            // User never voted on this book
                            val ratingKey: String = if (rating.toString().endsWith(".0")) rating.toString().take(1) else rating.toString()

                            val newEntry: List<String> = bookRating.rating[ratingKey]!! + firebaseAuth.currentUser?.uid!!

                            bookRating.rating = bookRating.rating.plus(Pair(ratingKey, newEntry))
                            bookRating.totalVotes = 1 + bookRating.totalVotes

                            bookRating.uploadToFirebase(sale.book.isbn).thenApply {
                                Toast.makeText(this, "You chose : $rating stars", Toast.LENGTH_SHORT).show()
                            }
                        }
                    } else {
                        // no rating yet
                        val ratingKey: String = if (rating.toString().endsWith(".0")) rating.toString().take(1) else rating.toString()

                        val emptyRating: HashMap<String, List<String>> = hashMapOf(
                            "0" to emptyList(), "0.5" to emptyList(),
                            "1" to emptyList(), "1.5" to emptyList(),
                            "2" to emptyList(), "2.5" to emptyList(),
                            "3" to emptyList(), "3.5" to emptyList(),
                            "4" to emptyList(), "4.5" to emptyList(),
                            "5" to emptyList()
                        )

                        val bookRating = BookRating(hashMapOf("rating" to emptyRating.plus(Pair(ratingKey, listOf(firebaseAuth.currentUser?.uid))), "totalVotes" to 1L))
                        bookRating.uploadToFirebase(sale.book.isbn).thenApply {
                            Toast.makeText(this, "You chose : $rating stars", Toast.LENGTH_SHORT).show()
                        }
                    }

                    bar.setIsIndicator(true)
                }
                .addOnFailureListener { exception ->
                    Log.d(
                        "SaleInforamtionActivity",
                        "SaleInformationActivity tried to request information from a Book() " +
                                "which '${sale.book.isbn}' isbn doesn't exist in database anymore",
                        exception
                    )
                }
        }
        getInternetPrice(sale.book.isbn).thenApply { price ->
            if (price == INTERNET_PRICE_UNAVAILABLE) {
                findViewById<TextView>(R.id.sale_information_internet_price).text = "???"
            } else {
                findViewById<TextView>(R.id.sale_information_internet_price).text = price
            }
        }
    }
}