package org.terst.doot.widget.ui

import android.content.Intent
import android.net.Uri
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material3.*
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.launch
import okhttp3.OkHttpClient
import org.terst.doot.widget.data.Keys
import org.terst.doot.widget.data.WidgetRepository
import org.terst.doot.widget.data.dataStore

class EventDetailActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val title = intent.getStringExtra(EXTRA_TITLE) ?: ""
        val source = intent.getStringExtra(EXTRA_SOURCE) ?: "calendar"
        val url = intent.getStringExtra(EXTRA_URL) ?: ""
        val recurringEventId = intent.getStringExtra(EXTRA_RECURRING_EVENT_ID)

        setContent {
            MaterialTheme(colorScheme = darkColorScheme()) {
                EventDetailSheet(
                    title = title,
                    source = source,
                    recurringEventId = recurringEventId,
                    onOpenCalendar = {
                        startActivity(
                            Intent(Intent.ACTION_VIEW, Uri.parse(url.ifEmpty { "https://calendar.google.com" }))
                        )
                        finish()
                    },
                    onDismiss = ::finish
                )
            }
        }
    }

    companion object {
        const val EXTRA_TITLE = "event_title"
        const val EXTRA_SOURCE = "event_source"
        const val EXTRA_URL = "event_url"
        const val EXTRA_RECURRING_EVENT_ID = "event_recurring_id"
    }
}

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun EventDetailSheet(
    title: String,
    source: String,
    recurringEventId: String?,
    onOpenCalendar: () -> Unit,
    onDismiss: () -> Unit
) {
    val context = LocalContext.current
    var recurrenceText by remember { mutableStateOf<String?>(null) }

    LaunchedEffect(recurringEventId) {
        if (recurringEventId == null) return@LaunchedEffect
        recurrenceText = "Loading…"
        val prefs = context.dataStore.data.first()
        val url = prefs[Keys.SERVER_URL]?.trimEnd('/') ?: return@LaunchedEffect
        val token = prefs[Keys.TOKEN] ?: return@LaunchedEffect
        val repo = WidgetRepository(OkHttpClient(), url, token)
        repo.getRecurrence(recurringEventId).onSuccess { text ->
            recurrenceText = text
        }.onFailure {
            recurrenceText = null
        }
    }

    ModalBottomSheet(
        onDismissRequest = onDismiss,
        sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true),
        containerColor = Color(0xFF1E293B),
        tonalElevation = 0.dp,
        dragHandle = {
            Box(
                modifier = Modifier
                    .padding(vertical = 12.dp)
                    .width(36.dp)
                    .height(4.dp)
                    .background(Color.White.copy(alpha = 0.25f), RoundedCornerShape(2.dp))
            )
        }
    ) {
        Column(
            modifier = Modifier
                .fillMaxWidth()
                .padding(horizontal = 20.dp)
                .navigationBarsPadding()
        ) {
            Row(verticalAlignment = androidx.compose.ui.Alignment.CenterVertically) {
                Box(
                    modifier = Modifier
                        .size(10.dp)
                        .background(sourceColor(source), RoundedCornerShape(5.dp))
                )
                Spacer(Modifier.width(10.dp))
                Text(
                    text = title,
                    fontSize = 17.sp,
                    fontWeight = FontWeight.SemiBold,
                    color = Color.White,
                    modifier = Modifier.weight(1f)
                )
            }
            recurrenceText?.let { text ->
                Spacer(Modifier.height(8.dp))
                Text(
                    text = text,
                    fontSize = 13.sp,
                    color = Color.White.copy(alpha = 0.6f)
                )
            }
            Spacer(Modifier.height(20.dp))
            OutlinedButton(
                onClick = onOpenCalendar,
                modifier = Modifier.fillMaxWidth(),
                colors = ButtonDefaults.outlinedButtonColors(contentColor = Color.White),
                border = androidx.compose.foundation.BorderStroke(1.dp, Color.White.copy(alpha = 0.3f))
            ) {
                Text("Open in Calendar", fontSize = 15.sp)
            }
            Spacer(Modifier.height(20.dp))
        }
    }
}