BlindlyTeam/Blindly

package ch.epfl.sdp.blindly.profile_setup

import android.content.Intent
import android.os.Bundle
import android.view.View
import android.widget.DatePicker
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import ch.epfl.sdp.blindly.R
import ch.epfl.sdp.blindly.utils.Date
import ch.epfl.sdp.blindly.user.User
import kotlinx.serialization.decodeFromString
import kotlinx.serialization.json.Json

private const val PAD_CHAR = '0'
private const val FORMAT = 2
const val MAJORITY_AGE = 18

/**
 * Gets the birthday of the user and do the checks on age.
 */
class ProfileBirthday : AppCompatActivity() {
    private lateinit var userBuilder: User.Builder

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

        val bundle = intent.extras
        if (bundle != null) {
            userBuilder = bundle.getString(EXTRA_USER)?.let { Json.decodeFromString(it) }!!
        }
    }

    /**
     * Uses a DatePicker in spinner format, calculates the age of the user via helper function
     * getAge and if user is a minor prompts error, otherwise passes the age information to
     * the builder and starts the ProfileGender activity
     * @param view the current view
     */
    fun startProfileGender(view: View) {
        findViewById<TextView>(R.id.warning_p3).visibility = View.INVISIBLE
        val datePicker: DatePicker = findViewById<View>(R.id.datePicker) as DatePicker
        val day: Int = datePicker.dayOfMonth
        val month: Int = datePicker.month + 1 //month correction
        val year: Int = datePicker.year
        val age = Date(day, month, year).getAge()

        if (age < MAJORITY_AGE) {
            findViewById<TextView>(R.id.warning_p3).visibility = View.VISIBLE
        } else {
            val dayString = day.toString().padStart(FORMAT, PAD_CHAR)
            val monthString = month.toString().padStart(FORMAT, PAD_CHAR)
            val birthday = "$dayString.$monthString.$year"

            val bundle = Bundle()
            userBuilder.setBirthday(birthday)
            bundle.putSerializable(
                EXTRA_USER,
                Json.encodeToString(User.Builder.serializer(), userBuilder)
            )
            val intent = Intent(this, ProfileGender::class.java)
            intent.putExtras(bundle)

            startActivity(intent)
        }
    }
}