package com.peachpasswords.ui.pairing

import android.content.Intent
import android.net.Uri
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.shape.RoundedCornerShape
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.semantics.heading
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.font.FontStyle
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

internal const val PEACH_PRO_PURCHASE_URL =
    "https://buy.polar.sh/polar_cl_IXSFIPojx67rcOTksn8LkH5mnU3osPHtYqBIl1eyuIz"

private val pairingProFeatures = listOf(
    "01" to ("Peach Sync" to "Encrypted sync across every paired device"),
    "02" to ("One-time purchase" to "$39 once · yours forever"),
    "03" to ("One shared key" to "Pro transfers during authenticated pairing"),
)

/**
 * Terminal pairing fallback derived from Settings' Peach Pro card. A tonal
 * Surface provides the MD3 container while Peach typography and spacing keep
 * it visually native to the rest of the app.
 */
@Composable
internal fun PairingProRequired(
    onRetry: () -> Unit,
    onOpenPro: (() -> Unit)? = null,
) {
    val context = LocalContext.current
    val accent = LocalPeachAccent.current

    Surface(
        modifier = Modifier.fillMaxWidth(),
        shape = RoundedCornerShape(24.dp),
        color = peachColors.SurfaceElevated,
        tonalElevation = 3.dp,
    ) {
        Column(Modifier.padding(PeachSpacing.lg)) {
            Text(
                "PEACH PRO · SYNC",
                color = accent,
                fontFamily = PeachType.Mono,
                fontSize = 9.sp,
                letterSpacing = 0.18.em,
            )
            Spacer(Modifier.height(PeachSpacing.sm))
            Text(
                "Pair freely. Sync with Pro.",
                color = peachColors.T0,
                fontFamily = PeachType.Display,
                fontStyle = FontStyle.Italic,
                fontSize = 28.sp,
                modifier = Modifier.semantics { heading() },
            )
            Spacer(Modifier.height(PeachSpacing.sm))
            Text(
                "Pairing can start from any device, but at least one of these two " +
                    "devices needs a valid Peach Pro license before pairing can finish. " +
                    "No vault or device record was added.",
                color = peachColors.T1,
                fontFamily = PeachType.Body,
                fontSize = 13.sp,
                lineHeight = 19.sp,
            )
            Spacer(Modifier.height(PeachSpacing.md))

            pairingProFeatures.forEach { (number, feature) ->
                HorizontalDivider(color = peachColors.T3.copy(alpha = 0.55f))
                Row(
                    Modifier
                        .fillMaxWidth()
                        .padding(vertical = PeachSpacing.sm),
                ) {
                    Text(
                        number,
                        color = accent,
                        fontFamily = PeachType.Mono,
                        fontSize = 10.sp,
                        modifier = Modifier.padding(end = PeachSpacing.md),
                    )
                    Column {
                        Text(
                            feature.first,
                            color = peachColors.T0,
                            fontFamily = PeachType.Body,
                            fontSize = 14.sp,
                        )
                        Text(
                            feature.second,
                            color = peachColors.T2,
                            fontFamily = PeachType.Body,
                            fontSize = 11.sp,
                        )
                    }
                }
            }

            Spacer(Modifier.height(PeachSpacing.md))
            PillButton(
                if (onOpenPro == null) "Get Peach Pro" else "Open Peach Pro",
                accent,
                filled = true,
            ) {
                if (onOpenPro != null) {
                    onOpenPro()
                } else {
                    runCatching {
                        context.startActivity(
                            Intent(Intent.ACTION_VIEW, Uri.parse(PEACH_PRO_PURCHASE_URL)),
                        )
                    }
                }
            }
            Spacer(Modifier.height(PeachSpacing.xs))
            PillButton("Try another device", peachColors.T2, filled = false, onClick = onRetry)
        }
    }
}