amethyst/app/src/main/java/com/vitorpamplona/amethyst/ui/components/InvoiceRequest.kt

package com.vitorpamplona.amethyst.ui.components

import android.widget.Toast
import androidx.compose.foundation.border
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.Button
import androidx.compose.material.ButtonDefaults
import androidx.compose.material.Divider
import androidx.compose.material.Icon
import androidx.compose.material.MaterialTheme
import androidx.compose.material.OutlinedTextField
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.input.KeyboardCapitalization
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.vitorpamplona.amethyst.R
import com.vitorpamplona.amethyst.model.Account
import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
import com.vitorpamplona.amethyst.ui.theme.QuoteBorder
import com.vitorpamplona.amethyst.ui.theme.placeholderText
import com.vitorpamplona.amethyst.ui.theme.subtleBorder
import kotlinx.coroutines.launch

@Composable
fun InvoiceRequest(
    lud16: String,
    toUserPubKeyHex: String,
    account: Account,
    titleText: String? = null,
    buttonText: String? = null,
    onSuccess: (String) -> Unit,
    onClose: () -> Unit
) {
    val context = LocalContext.current
    val scope = rememberCoroutineScope()

    Column(
        modifier = Modifier
            .fillMaxWidth()
            .padding(start = 30.dp, end = 30.dp)
            .clip(shape = QuoteBorder)
            .border(1.dp, MaterialTheme.colors.subtleBorder, QuoteBorder)
    ) {
        Column(
            modifier = Modifier
                .fillMaxWidth()
                .padding(30.dp)
        ) {
            Row(
                verticalAlignment = Alignment.CenterVertically,
                modifier = Modifier
                    .fillMaxWidth()
                    .padding(bottom = 10.dp)
            ) {
                Icon(
                    painter = painterResource(R.drawable.lightning),
                    null,
                    modifier = Modifier.size(20.dp),
                    tint = Color.Unspecified
                )

                Text(
                    text = titleText ?: stringResource(R.string.lightning_tips),
                    fontSize = 20.sp,
                    fontWeight = FontWeight.W500,
                    modifier = Modifier.padding(start = 10.dp)
                )
            }

            Divider()

            var message by remember { mutableStateOf("") }
            var amount by remember { mutableStateOf(1000L) }

            OutlinedTextField(
                label = { Text(text = stringResource(R.string.note_to_receiver)) },
                modifier = Modifier.fillMaxWidth(),
                value = message,
                onValueChange = { message = it },
                placeholder = {
                    Text(
                        text = stringResource(R.string.thank_you_so_much),
                        color = MaterialTheme.colors.placeholderText
                    )
                },
                keyboardOptions = KeyboardOptions.Default.copy(
                    capitalization = KeyboardCapitalization.Sentences
                ),
                singleLine = true
            )

            OutlinedTextField(
                label = { Text(text = stringResource(R.string.amount_in_sats)) },
                modifier = Modifier.fillMaxWidth(),
                value = amount.toString(),
                onValueChange = {
                    runCatching {
                        if (it.isEmpty()) {
                            amount = 0
                        } else {
                            amount = it.toLong()
                        }
                    }
                },
                placeholder = {
                    Text(
                        text = "1000",
                        color = MaterialTheme.colors.placeholderText
                    )
                },
                keyboardOptions = KeyboardOptions.Default.copy(
                    keyboardType = KeyboardType.Number
                ),
                singleLine = true
            )

            Button(
                modifier = Modifier.fillMaxWidth().padding(vertical = 10.dp),
                onClick = {
                    val zapRequest = account.createZapRequestFor(toUserPubKeyHex, message, account.defaultZapType)

                    LightningAddressResolver().lnAddressInvoice(
                        lud16,
                        amount * 1000,
                        message,
                        zapRequest?.toJson(),
                        onSuccess = onSuccess,
                        onError = {
                            scope.launch {
                                Toast.makeText(context, it, Toast.LENGTH_SHORT).show()
                                onClose()
                            }
                        },
                        onProgress = {
                        }
                    )
                },
                shape = QuoteBorder,
                colors = ButtonDefaults.buttonColors(
                    backgroundColor = MaterialTheme.colors.primary
                )
            ) {
                Text(text = buttonText ?: stringResource(R.string.send_sats), color = Color.White, fontSize = 20.sp)
            }
        }
    }
}