package com.peachpasswords.ui.vault

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.height
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.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.peachColors
import com.peachpasswords.ui.theme.PeachType

/**
 * The Peach text field used across the entry-edit screens: a bare underline (no
 * border box), drawn in t3 and lit to the accent while focused — matching the
 * lock screen's credential inputs. Label is IBM Plex Mono 9sp, uppercase, t2,
 * with 0.08em tracking.
 *
 * Replaces the old boxed `Field`/`CardField` primitives so every new-entry input
 * shares one underline style (brief Fix 6).
 */
@Composable
fun PeachField(
    label: String,
    value: String,
    onChange: (String) -> Unit,
    modifier: Modifier = Modifier,
    singleLine: Boolean = true,
    mono: Boolean = true,
    keyboardType: KeyboardType = KeyboardType.Text,
    visualTransformation: VisualTransformation = VisualTransformation.None,
    labelTrailing: (@Composable () -> Unit)? = null,
    trailing: (@Composable () -> Unit)? = null,
) {
    val accent = LocalPeachAccent.current
    val interaction = remember { MutableInteractionSource() }
    val focused by interaction.collectIsFocusedAsState()
    val hairline = peachColors.T3
    Column(modifier.fillMaxWidth().padding(bottom = 14.dp)) {
        Row(verticalAlignment = Alignment.CenterVertically) {
            Text(
                label.uppercase(),
                color = peachColors.T2,
                fontFamily = PeachType.Mono,
                fontSize = 9.sp,
                letterSpacing = 0.08.em,
            )
            if (labelTrailing != null) {
                Spacer(Modifier.width(8.dp))
                labelTrailing()
            }
        }
        Spacer(Modifier.height(6.dp))
        Row(verticalAlignment = Alignment.CenterVertically) {
            BasicTextField(
                value = value,
                onValueChange = onChange,
                singleLine = singleLine,
                textStyle = TextStyle(
                    color = peachColors.T0,
                    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 = 8.dp),
            )
            if (trailing != null) {
                Spacer(Modifier.width(8.dp))
                trailing()
            }
        }
    }
}