package ru.omni_devel.cards

import android.content.Intent
import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateListOf
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalUriHandler
import androidx.compose.ui.res.stringResource
import kotlinx.serialization.json.Json
import ru.omni_devel.cards.ui.theme.OmniCardsTheme

class MainActivity : ComponentActivity() {
    private lateinit var db: DbHelper

    private val cards = mutableStateListOf<CardInfo>()

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

        db = DbHelper(this, null)

        setContent {
            OmniCardsTheme {
                Scaffold(
                    modifier = Modifier.fillMaxSize()
                ) { innerPadding ->
                    MainPage(innerPadding, cards, onDeleteCard = { cardId ->
                        db.removeCard(cardId)
                        cards.removeIf { it.id == cardId }
                    }, getDbFun = {
                        return@MainPage db
                    })
                }
            }
        }
    }

    override fun onResume() {
        super.onResume()

        cards.clear()
        cards.addAll(db.getCards())
    }
}

@Composable
fun MainPage(
    innerPadding: PaddingValues,
    cards: List<CardInfo>,
    onDeleteCard: (Int) -> Unit,
    getDbFun: () -> DbHelper
) {
    val context = LocalContext.current
    val uriHandler = LocalUriHandler.current

    var isActionBarShowed by remember { mutableStateOf(false) }

    Box(
        modifier = Modifier.fillMaxSize()
    ) {
        Page(
            stringResource(R.string.app_name),
            innerPadding
        ) {
            Column(
                modifier = Modifier.verticalScroll(rememberScrollState()).padding(bottom = 64.dp).background(Color.Transparent).padding(top = 16.dp),
                verticalArrangement = Arrangement.spacedBy(8.dp)
            ) {
                if (cards.isEmpty()) {
                    Text(
                        stringResource(R.string.add_card_to_get_started)
                    )
                } else {
                    for (card in cards) {
                        CardButton(card, onDeleteCard)
                    }
                }
            }
        }

        if (isActionBarShowed) {
            Column(
                modifier = Modifier
                    .align(Alignment.BottomEnd)
                    .padding(innerPadding)
                    .padding(16.dp)
                    .background(
                        MaterialTheme.colorScheme.inversePrimary,
                        RoundedCornerShape(24.dp)
                    )
                    .padding(16.dp)
                    .fillMaxWidth()
            ) {
                FullWidthButton(
                    onClick = {
                        isActionBarShowed = false

                        val intent = Intent(context, EditCardActivity::class.java)

                        context.startActivity(intent)
                    }
                ) {
                    Text(stringResource(R.string.do_add_card))
                }
                FullWidthButton(
                    onClick = {
                        Toast.makeText(context, context.getString(R.string.sync_in_progress), Toast.LENGTH_SHORT).show()

                        sendToWatch(context, "/updateCards", Json.encodeToString(getDbFun().getCards())) { isSuccess ->
                            if (isSuccess) {
                                Toast.makeText(context, context.getString(R.string.sync_is_successful), Toast.LENGTH_SHORT).show()
                            } else {
                                Toast.makeText(context, context.getString(R.string.sync_is_fail), Toast.LENGTH_LONG).show()
                            }
                        }

                        isActionBarShowed = false
                    }
                ) {
                    Text(stringResource(R.string.do_sync))
                }
                FullWidthButton(
                    onClick = {
                        val intent = Intent(context, BackupActivity::class.java)

                        context.startActivity(intent)

                        isActionBarShowed = false
                    }
                ) {
                    Text(stringResource(R.string.open_backup_menu))
                }
                FullWidthButton(
                    onClick = {
                        uriHandler.openUri("https://github.com/omni-devel/OmniCards")

                        isActionBarShowed = false
                    }
                ) {
                    Text(stringResource(R.string.source_code))
                }
                FullWidthButton(
                    onClick = {
                        isActionBarShowed = false
                    }
                ) {
                    Text(">")
                }
            }
        } else {
            Button(
                modifier = Modifier
                    .align(Alignment.BottomEnd)
                    .padding(innerPadding).padding(32.dp),
                onClick = {
                    isActionBarShowed = true
                }
            ) {
                Text("<")
            }
        }
    }
}