BlindlyTeam/Blindly

package ch.epfl.sdp.blindly.main_screen.profile.edit

import android.os.Build
import android.os.Bundle
import android.view.View.INVISIBLE
import android.view.View.VISIBLE
import android.widget.*
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AppCompatActivity
import ch.epfl.sdp.blindly.R
import ch.epfl.sdp.blindly.user.GENDER
import ch.epfl.sdp.blindly.user.UserHelper
import ch.epfl.sdp.blindly.user.enums.Gender.*
import ch.epfl.sdp.blindly.viewmodel.UserViewModel
import ch.epfl.sdp.blindly.viewmodel.ViewModelAssistedFactory
import dagger.hilt.android.AndroidEntryPoint
import javax.inject.Inject

private val REGEX = Regex("^[a-zA-Z]*$")

@AndroidEntryPoint
class EditGender : AppCompatActivity() {

    @Inject
    lateinit var userHelper: UserHelper

    @Inject
    lateinit var assistedFactory: ViewModelAssistedFactory

    private lateinit var viewModel: UserViewModel

    private lateinit var radioGroup: RadioGroup
    private lateinit var gender: String

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

        val uid = userHelper.getUserId()
        viewModel = UserViewModel.instantiateViewModel(
            uid,
            assistedFactory,
            this,
            this
        )

        gender = intent.getStringExtra(GENDER).toString()
        val editGender = findViewById<EditText>(R.id.edit_gender)
        val updateGender = findViewById<Button>(R.id.update_gender_more)
        val edit = findViewById<Button>(R.id.edit_gender_button)
        radioGroup = findViewById(R.id.gender_radio_group)

        setCheckedRadioButton()

        radioGroup.setOnCheckedChangeListener { _, checkedId ->
            val more = findViewById<RadioButton>(MORE.id)
            if (checkedId == MORE.id) {
                if (more.text == MORE.asString)
                    showGenderEditor()
                else
                    edit.visibility = VISIBLE
            } else {
                editGender.visibility = INVISIBLE
                edit.visibility = INVISIBLE
                updateGender.visibility = INVISIBLE
                hideAllWarnings()
            }
        }

        edit.setOnClickListener {
            showGenderEditor()
            edit.visibility = INVISIBLE
        }

        setUpdateOnClickListener(updateGender)
    }

    override fun onBackPressed() {
        val checkedChipId = radioGroup.checkedRadioButtonId
        val checkedChip = findViewById<RadioButton>(checkedChipId)
        if (checkedChip.text != gender)
            viewModel.updateField(GENDER, checkedChip.text.toString())
        super.onBackPressed()
    }

    private fun setUpdateOnClickListener(updateGender: Button) {
        val more = findViewById<RadioButton>(MORE.id)
        val editGender = findViewById<EditText>(R.id.edit_gender)
        val editButton = findViewById<Button>(R.id.edit_gender_button)
        updateGender.setOnClickListener {
            hideAllWarnings()
            if (genderMoreIsCorrect()) {
                more.text = editGender.text
                editGender.text.clear()
                editGender.visibility = INVISIBLE
                updateGender.visibility = INVISIBLE
                editButton.visibility = VISIBLE
            }
        }
    }

    private fun showGenderEditor() {
        findViewById<EditText>(R.id.edit_gender).visibility = VISIBLE
        findViewById<Button>(R.id.update_gender_more).visibility = VISIBLE
    }

    private fun hideAllWarnings() {
        findViewById<TextView>(R.id.please_specify_warning).visibility = INVISIBLE
        findViewById<TextView>(R.id.use_only_letters_warning).visibility = INVISIBLE
    }

    private fun genderMoreIsCorrect(): Boolean {
        val editGender = findViewById<EditText>(R.id.edit_gender).text.toString()
        hideAllWarnings()

        return if (!editGender.matches(REGEX)) {
            //incorrect format, output error
            findViewById<TextView>(R.id.use_only_letters_warning).visibility = VISIBLE
            false
        } else {
            if (editGender.isNotEmpty()) {
                true
            } else {
                //empty text, output error
                findViewById<TextView>(R.id.please_specify_warning).visibility = VISIBLE
                false
            }
        }
    }

    private fun setCheckedRadioButton() {
        val more = findViewById<RadioButton>(MORE.id)
        when (gender) {
            WOMAN.asString -> {
                radioGroup.check(WOMAN.id)
                more.text = MORE.asString
            }
            MAN.asString -> {
                radioGroup.check(MAN.id)
                more.text = MORE.asString
            }
            else -> {
                radioGroup.check(MORE.id)
                more.text = gender
                findViewById<Button>(R.id.edit_gender_button).visibility = VISIBLE
            }
        }
    }
}