package com.taf.waf

import android.content.Intent
import android.content.SharedPreferences
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.launch
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory

class LoginActivity : AppCompatActivity() {

    private lateinit var prefs: SharedPreferences
    private lateinit var service: UserService

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

        prefs = getSharedPreferences("auth", MODE_PRIVATE)
        if (prefs.getString("token", null) != null) {
            startActivity(Intent(this, MainActivity::class.java))
            finish()
            return
        }

        service = Retrofit.Builder()
            .baseUrl(ApiConfig.BASE_URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build()
            .create(UserService::class.java)

        val userField: EditText = findViewById(R.id.username)
        val passField: EditText = findViewById(R.id.password)

        findViewById<Button>(R.id.login_button).setOnClickListener {
            val email = userField.text.toString()
            val password = passField.text.toString()
            lifecycleScope.launch {
                try {
                    val response = service.login(LoginRequest(email, password))
                    if (response.isSuccessful) {
                        val token = response.body()?.token
                        if (!token.isNullOrEmpty()) {
                            prefs.edit().putString("token", token).apply()
                            startActivity(Intent(this@LoginActivity, MainActivity::class.java))
                            finish()
                        } else {
                            showError("Missing token")
                        }
                    } else {
                        showError("Login failed")
                    }
                } catch (e: Exception) {
                    showError("Network error")
                }
            }
        }
    }

    private fun showError(msg: String) {
        Toast.makeText(this, msg, Toast.LENGTH_LONG).show()
    }
}