Fastestvpn_JetpackCompose/app/src/main/java/com/vpn/fastestvpnservice/screens/LoginScreen.kt

package com.vpn.fastestvpnservice.screens


import android.content.res.Configuration
import android.gesture.Gesture
import android.util.Log
import android.widget.Toast
import androidx.activity.OnBackPressedCallback
import androidx.compose.foundation.BorderStroke
import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.clickable
import androidx.compose.foundation.gestures.detectTapGestures
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.ClickableText
import androidx.compose.foundation.text.KeyboardActionScope
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Email
import androidx.compose.material.icons.filled.Home
import androidx.compose.material.icons.filled.Lock
import androidx.compose.material.icons.filled.Visibility
import androidx.compose.material.icons.filled.VisibilityOff
import androidx.compose.material.icons.outlined.Visibility
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonColors
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.ButtonElevation
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.ElevatedButton
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.material3.TextFieldColors
import androidx.compose.material3.TextFieldDefaults
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.setValue
import androidx.compose.runtime.getValue
import androidx.compose.runtime.livedata.observeAsState
import androidx.compose.runtime.mutableFloatStateOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCompositionContext
import androidx.compose.ui.Alignment
import androidx.compose.ui.ExperimentalComposeUiApi
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.alpha
import androidx.compose.ui.draw.paint
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalFocusManager
import androidx.compose.ui.platform.LocalSoftwareKeyboardController
import androidx.compose.ui.res.colorResource
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.text.AnnotatedString
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontStyle
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.input.ImeAction
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.input.VisualTransformation
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.TextUnit
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import androidx.navigation.NavHostController
import androidx.navigation.compose.rememberNavController
import com.vpn.fastestvpnservice.R
import com.vpn.fastestvpnservice.beans.DataResponse
import com.vpn.fastestvpnservice.beans.UserResponse
import com.vpn.fastestvpnservice.beans.themesList
import com.vpn.fastestvpnservice.helpers.BasePreferenceHelper
import com.vpn.fastestvpnservice.screens.bottomNavBarScreens.AddText
import com.vpn.fastestvpnservice.sealedClass.Screen
import com.vpn.fastestvpnservice.viewmodels.LoginViewModel
import kotlinx.coroutines.delay
import kotlin.coroutines.coroutineContext
import kotlin.random.Random

@OptIn(ExperimentalComposeUiApi::class)
@Composable
fun Login(navHostController: NavHostController) {
    val keyboardController = LocalSoftwareKeyboardController.current
    val focusManager = LocalFocusManager.current
    val random = Random.nextInt(1,999)

    val loginViewModel: LoginViewModel = viewModel()
    val readOnly = loginViewModel.liveDataLoginStatus.observeAsState().value

    var textChanged by remember { mutableStateOf("") }
    var passwordChanged by remember { mutableStateOf("") }
    var passwordVisible by remember { mutableStateOf(false) }

    val context = LocalContext.current
    var basePreferenceHelper = BasePreferenceHelper(context)

    Box(
        modifier = Modifier
            .fillMaxSize()
            .paint(
                painter = painterResource(id = R.drawable.bg_img3),
                contentScale = ContentScale.FillBounds
            )
            .alpha(if (readOnly == true) 0.6F else 1F)
//            .background(
//                if (isSystemInDarkTheme()) Color.Black
//                else Color.Transparent
//            )
            .pointerInput(Unit) {
                detectTapGestures {
                    focusManager.clearFocus()
                    keyboardController?.hide()
                }
            }
        ,
//        contentAlignment = Alignment.Center

    ) {
        Column (
            modifier = Modifier
                .fillMaxHeight()
                .fillMaxWidth()
            ,
            verticalArrangement = Arrangement.Top,
            horizontalAlignment = Alignment.CenterHorizontally
        ) {
            Spacer(modifier = Modifier.height(132.dp))
            Image(
                painter = painterResource(
                    id = R.drawable.fastestapp_logo3x),
                contentDescription = "FastestVPN",
                modifier = Modifier
                    .size(width = 75.dp, height = 102.dp)
                    .background(Color.Transparent)
                    .padding(top = 0.dp)
                ,
            )
            Spacer(modifier = Modifier.height(50.dp))

            TextMsg(
                fontSize = 28.sp,
                text = "Welcome Back!",
                color = Color.White
            )
            TextMsg(
                fontSize = 14.sp,
                text = "Please login to your account.",
                color = colorResource(id = R.color.light_grey)
            )

            Spacer(modifier = Modifier.height(20.dp))

            TextField(
                value = textChanged,
                onValueChange = {
                    textChanged = it
                },
                readOnly = readOnly!!,

                textStyle = TextStyle(
                    fontSize = 20.sp,
                    color = colorResource(id = R.color.white),

                ),
                modifier = Modifier
                    .padding(start = 15.dp, end = 15.dp)
                    .align(Alignment.Start)
                    .fillMaxWidth()
                    .height(60.dp)
                    .border(
                        1.dp,
                        color = colorResource(id = R.color.white),
                        shape = RoundedCornerShape(16.dp)
                    )
                    .clickable() { },

//                placeholder = {
//                    Text(text = "Enter email address",
//                        color = colorResource(id = R.color.white))
//                },
                label = {
                    Text(text = "Email",
                        style = TextStyle(
                            colorResource(id = R.color.white))
                        )
                },
                leadingIcon = {
                    Icon(
                        painter = painterResource(id = R.drawable.sms3x),
                        contentDescription = "Email Logo",
                        tint = colorResource(id = R.color.white),
                        modifier = Modifier
                            .size(24.dp, 24.dp)
                    )
                },
                maxLines = 1,
                colors = TextFieldDefaults.colors(
                    focusedLabelColor = Color.Blue,
                    unfocusedContainerColor = colorResource(id = R.color.transparent),
                    focusedContainerColor = colorResource(id = R.color.transparent),
                    focusedIndicatorColor = colorResource(id = R.color.transparent),
                    disabledIndicatorColor = colorResource(id = R.color.transparent),
                    unfocusedIndicatorColor = colorResource(id = R.color.transparent),
                    cursorColor = colorResource(id = R.color.white)
                ),
                keyboardOptions = KeyboardOptions(
                    keyboardType = KeyboardType.Email,
                    imeAction = ImeAction.Done
                ),
                keyboardActions = KeyboardActions(
                    onDone = {
                        focusManager.clearFocus()
                        keyboardController?.hide()
                    }
                ),

            )

            Spacer(modifier = Modifier.height(20.dp))

            TextField(
                value = passwordChanged,
                onValueChange = {
                    Log.d("onClick_test", "onValueChange -> ")
                    passwordChanged = it
                },
                readOnly = readOnly,

                textStyle = TextStyle(
                    fontSize = 20.sp,
                    color = colorResource(id = R.color.white),

                    ),
                modifier = Modifier
                    .padding(start = 15.dp, end = 15.dp)
                    .align(Alignment.Start)
                    .fillMaxWidth()
                    .height(60.dp)
                    .border(
                        1.dp,
                        color = colorResource(id = R.color.grey_password_field),
                        shape = RoundedCornerShape(16.dp)
                    )
                    .background(color = colorResource(id = R.color.transparent))
                    .clickable() { },

                shape = RoundedCornerShape(15.dp),
//                placeholder = {
//                    Text(text = "Enter password",
//                        color = colorResource(id = R.color.white))
//                },
                label = {
                    Text(text = "Password",
                        style = TextStyle(
                            colorResource(id = R.color.white))
                    )
                },
                leadingIcon = {
                    Icon(
                        painter = painterResource(id = R.drawable.lock3x),
                        contentDescription = "Password Logo",
                        tint = colorResource(id = R.color.white),
                        modifier = Modifier
                            .size(24.dp, 24.dp)
                    )
                },
                maxLines = 1,
                colors = TextFieldDefaults.colors(
                    focusedLabelColor = Color.Blue,
                    unfocusedContainerColor = colorResource(id = R.color.grey_password_field),
                    focusedContainerColor = colorResource(id = R.color.grey_password_field),
                    focusedIndicatorColor = colorResource(id = R.color.transparent),
                    disabledIndicatorColor = colorResource(id = R.color.transparent),
                    unfocusedIndicatorColor = colorResource(id = R.color.transparent),
                    cursorColor = colorResource(id = R.color.white)
                ),
                keyboardOptions = KeyboardOptions(
                    keyboardType = KeyboardType.Password,
                    imeAction = ImeAction.Done
                ),
                keyboardActions = KeyboardActions(
                    onDone = {
                        focusManager.clearFocus()
                        keyboardController?.hide()
                    }
                ),
                visualTransformation =
                if (passwordVisible) VisualTransformation.Companion.None
                        else PasswordVisualTransformation(),

                trailingIcon = {
//                    val image
//                            = if (passwordVisible) Icons.Filled.Visibility
//                    else Icons.Filled.VisibilityOff

                    val description = if (passwordVisible) "Hide Password"
                    else "Show Password"

                    IconButton(onClick = {
                        if (!readOnly) {
                            passwordVisible = !passwordVisible
                        }
                    })
                    {
                        if (passwordVisible) {
                            Icon(
                                imageVector = Icons.Outlined.Visibility,
                                contentDescription = description,
                                tint = colorResource(id = R.color.white),
                                modifier = Modifier.size(24.dp)
                            )
                        }
                        else {
                            Icon(
                                painter = painterResource(id = R.drawable.eye_slash3x),
                                contentDescription = description,
                                tint = colorResource(id = R.color.white),
                                modifier = Modifier.size(24.dp)
                            )
                        }
                    }
                }
                )

            Spacer(modifier = Modifier.height(15.dp))
            ClickableText(
                onClick = {
                    if (!readOnly) {
                        Log.d("onClick_test", "Forgot Password Clicked")
                        navHostController.navigate(Screen.ForgotPassword.route)
                    }
                },
                modifier = Modifier
                    .padding(end = 15.dp)
                    .align(Alignment.End),
                style = TextStyle(
                    fontSize = 16.sp,
                    fontWeight = FontWeight.Normal,
                    color = colorResource(id = R.color.yellow_text),
                ),
                text = AnnotatedString("Forgot Password"),
            )

        }

        SignInButton(
            navHostController = navHostController,
            textChanged,
            passwordChanged,
            loginViewModel = loginViewModel,
            basePreferenceHelper
            )
        Row (
            modifier = Modifier
                .align(Alignment.BottomCenter)
                .padding(57.dp),
        ){
            TextMsgSignUp(navHostController = navHostController, loginViewModel, readOnly!!)
//            Text(
//                modifier = Modifier
//                    .padding(0.dp),
//                fontSize = 14.sp,
//                fontWeight = FontWeight.Normal,
//                fontStyle = FontStyle.Normal,
//                text = "Don't have an account? ",
//                color = Color.White,
//            )
//            ClickableText(
//                onClick = {
//                    navHostController.navigate(Screen.SignUp.route)
//                },
//                modifier = Modifier
//                    .padding(0.dp),
//                style = TextStyle(
//                    fontSize = 14.sp,
//                    fontStyle = FontStyle.Normal,
//                    color = colorResource(id = R.color.yellow_text),
//                ),
//                text = AnnotatedString(" Sign Up"),
//            )
        }
    }

}

@Composable
fun RowScope.TextMsgSignUp(
    navHostController: NavHostController,
    loginViewModel: LoginViewModel,
    isEnabled: Boolean
) {
        Text(
            modifier = Modifier
                .padding(0.dp),
            fontSize = 14.sp,
            fontWeight = FontWeight.Normal,
            fontStyle = FontStyle.Normal,
            text = "Don't have an account? ",
            color = Color.White,
        )
        ClickableText(
            onClick = {
                if (isEnabled == false) {
                    navHostController.navigate(Screen.SignUp.route)
                }
            },
            modifier = Modifier
                .padding(0.dp),
            style = TextStyle(
                fontSize = 14.sp,
                fontStyle = FontStyle.Normal,
                color = colorResource(id = R.color.yellow_text),
            ),
            text = AnnotatedString(" Sign Up"),
        )

}

@Composable
fun BoxScope.SignInButton(
    navHostController: NavHostController,
    email: String,
    password: String,
    loginViewModel: LoginViewModel,
    prefHelper: BasePreferenceHelper
) {
//    var showLoader by remember { mutableStateOf(false) }

    if (loginViewModel.liveDataLoginStatus.value == true) {
        var progress by remember { mutableFloatStateOf(0.1F) }

        LaunchedEffect(key1 = Unit) {
            while (true) {
                for (i in 1..100) {
                    progress = i.toFloat()/100F
                    delay(150)
                }
                progress = 0.1F
            }
        }

        CircularProgressIndicator(
            progress = { progress },
            modifier = Modifier
                .align(Alignment.Center)
                .size(50.dp),
            color = colorResource(id = R.color.yellow_text),
            strokeWidth = 5.dp,
        )
    }

    Button(
        modifier = Modifier
            .padding(
                start = 15.dp, end = 15.dp,
                bottom = 109.dp
            )
            .align(Alignment.BottomCenter)
            .background(colorResource(id = R.color.transparent))
            .fillMaxWidth()
            .height(60.dp)
            .clickable() { },
        onClick = {
            Log.d("test_api_response live", "Login Clicked:")
//            showLoader = true
            if (loginViewModel.liveDataLoginStatus.value == false) {
                Log.d("test_api_response live", "SignIn: $email $password")
                loginViewModel.setLoginStatus(true)
                loginViewModel.loginRequest(
                    email,
                    password,
                    "android",
                    "11",
                    "3.2.4"
                )
            }
        },
        shape = RoundedCornerShape(15.dp),
//            border = BorderStroke(25.dp, colorResource(id = R.color.black)),
        colors = ButtonDefaults.buttonColors(
            contentColor = colorResource(id = R.color.blue_text),
            containerColor = colorResource(id = R.color.white),
        ),
    )
    {
        Text(text = "Sign In",
            fontSize = 18.sp,
            fontWeight = FontWeight.Medium,
            fontStyle = FontStyle.Normal
        )

        val loginData by loginViewModel.liveDataUserResponse.observeAsState()
        loginData?.let { response ->
            Log.d("test_api_response live", "live: ${loginData?.status} ${loginData?.message}")
            loginViewModel.setLoginStatus(false)
//            showLoader = false
            if (response.status) {
                response.data?.let {
                    prefHelper.setLoggedInState(true)

                    prefHelper.savePassword(password)
                    prefHelper.saveUser(it)
                    it.wireguard?.let { wg ->
                        prefHelper.saveWireGuard(wg)
                        Log.d("test_wg_data", "Login:: ${wg.ip} ${wg.key}")
                    }
                    it.product?.let { it1 -> prefHelper.saveProduct(it1) }
                    prefHelper.saveEnabledProtocols(it.enabled_protocols)
                    prefHelper.saveAvailableProtocols(it.available_protocols)
                    prefHelper.saveXPlatformToken(it.userinfo?.email + "_" + System.currentTimeMillis())
                    prefHelper.saveAdBlockState(false)
                    prefHelper.saveTheme(themesList[0])

                    it.servers?.let {
                        prefHelper.saveServerData(it)
                    }

                    Log.d("bearer_token", it.token.toString())

//                    upgradePriceViewModel.getProducts()

//                    prefHelper.getFcmToken().let {
//                        loginViewModel.sendFcmToken(it)
//                        Log.d("fcm token get", prefHelper.getFcmToken())
//                    }

                    prefHelper.saveRadioBtnSplitPos(0)







                    navHostController.popBackStack()
                    navHostController.navigate(Screen.BottomBarMainScreen.route)
                }

            }
            loginViewModel.mutableLiveDataUserResponse.value = null
        }
    }
}

@Composable
fun ColumnScope.TextMsg(fontSize: TextUnit, text: String, color: Color) {
    Text(
        modifier = Modifier
            .padding(start = 15.dp)
            .align(Alignment.Start),
        fontSize = fontSize,
        fontWeight = FontWeight.Normal,
        text = text,
        color = color,
    )
}

@Preview
@Composable
fun LoginPreview() {
    Login(rememberNavController())
}

@Preview(uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun LoginPreviewDark() {
    Login(rememberNavController())
}