package ru.omni_devel.cards

import android.os.Bundle
import android.view.WindowManager
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.Arrangement
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.material3.MaterialTheme
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
import ru.omni_devel.cards.ui.theme.OmniCardsTheme

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

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

        db = DbHelper(this, null)

        val cardId = intent.getIntExtra("cardId", -1)

        val cardInfo = db.getCard(cardId)

        if (cardInfo == null) {
            Toast.makeText(this, "Card is not exists", Toast.LENGTH_LONG).show()
            finish()

            return
        }

        setContent {
            OmniCardsTheme {
                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
                    ShowCardPage(innerPadding, cardInfo)
                }
            }
        }
    }

    override fun onResume() {
        super.onResume()

        setBrightness(1f)
    }

    override fun onPause() {
        super.onPause()

        setBrightness(WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_NONE)
    }

    private fun setBrightness(level: Float) {
        window.attributes.screenBrightness = level
    }
}

@Composable
fun ShowCardPage(innerPadding: PaddingValues, cardInfo: CardInfo) {
    val bitmap = remember(cardInfo) {
        try {
            generateCode(cardInfo.codeValue, cardInfo.codeType).asImageBitmap()
        } catch (_: Exception) {
            null
        }
    }

    Page(cardInfo.name, innerPadding) {
        Column(
            modifier = Modifier.fillMaxSize(),
            verticalArrangement = Arrangement.Center,
            horizontalAlignment = Alignment.CenterHorizontally
        ) {
            if (bitmap != null) {
                Image(
                    bitmap = bitmap,
                    contentDescription = cardInfo.codeValue,
                    modifier = Modifier
                        .padding(bottom = 8.dp)
                        .fillMaxWidth()
                        .weight(1f, fill = false),
                    contentScale = ContentScale.Fit
                )
                Text(
                    cardInfo.codeValue,
                    modifier = Modifier.fillMaxWidth(),
                    textAlign = TextAlign.Center
                )
            } else {
                Text(
                    stringResource(R.string.failed_to_generate_card_code),
                    modifier = Modifier.fillMaxWidth(),
                    textAlign = TextAlign.Center,
                    color = MaterialTheme.colorScheme.error
                )
            }
        }
    }
}