package com.peachpasswords.ui.components

import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsFocusedAsState
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.text.BasicTextField
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.drawBehind
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.SolidColor
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.VisualTransformation
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.em
import androidx.compose.ui.unit.sp
import com.peachpasswords.ui.theme.LocalPeachAccent
import com.peachpasswords.ui.theme.PeachSpacing
import com.peachpasswords.ui.theme.PeachType
import com.peachpasswords.ui.theme.peachColors

@Composable
fun PeachField(
    label: String,
    value: String,
    onValueChange: (String) -> Unit,
    modifier: Modifier = Modifier,
    singleLine: Boolean = true,
    mono: Boolean = true,
    keyboardType: KeyboardType = KeyboardType.Text,
    visualTransformation: VisualTransformation = VisualTransformation.None,
    trailing: (@Composable () -> Unit)? = null,
) {
    val accent = LocalPeachAccent.current
    val interaction = remember { MutableInteractionSource() }
    val focused by interaction.collectIsFocusedAsState()
    // Gate 1: colorScheme.outline is PeachTheme's exact mapping of T3 — route
    // through it here so this primitive doesn't bypass the theme.
    val hairline = MaterialTheme.colorScheme.outline

    Column(modifier.fillMaxWidth()) {
        Text(
            label.uppercase(),
            color = peachColors.T2,
            fontFamily = PeachType.Mono,
            fontSize = 9.sp,
            letterSpacing = 0.08.em,
        )
        Row(verticalAlignment = Alignment.CenterVertically) {
            BasicTextField(
                value = value,
                onValueChange = onValueChange,
                singleLine = singleLine,
                textStyle = TextStyle(
                    color = MaterialTheme.colorScheme.onSurface,
                    fontFamily = if (mono) PeachType.Mono else PeachType.Body,
                    fontSize = 13.sp,
                ),
                cursorBrush = SolidColor(accent),
                interactionSource = interaction,
                keyboardOptions = KeyboardOptions(keyboardType = keyboardType),
                visualTransformation = visualTransformation,
                modifier = Modifier
                    .weight(1f)
                    .drawBehind {
                        drawRect(
                            color = if (focused) accent else hairline,
                            topLeft = Offset(0f, size.height - 1.dp.toPx()),
                            size = Size(size.width, 1.dp.toPx()),
                        )
                    }
                    .padding(vertical = PeachSpacing.sm),
            )
            if (trailing != null) {
                Spacer(Modifier.width(PeachSpacing.sm))
                trailing()
            }
        }
    }
}