package helium314.keyboard.settings.dialogs

import android.content.Intent
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import helium314.keyboard.compat.locale
import helium314.keyboard.latin.Dictionary
import helium314.keyboard.latin.R
import helium314.keyboard.latin.common.LocaleUtils.localizedDisplayName
import helium314.keyboard.latin.utils.DictionaryInfoUtils
import helium314.keyboard.settings.dictionaryFilePicker
import helium314.keyboard.settings.screens.getUserAndInternalDictionaries
import java.util.Locale

@Composable
fun DictionaryDialog(
    onDismissRequest: () -> Unit,
    locale: Locale,
) {
    val ctx = LocalContext.current
    val (dictionaries, hasInternal) = getUserAndInternalDictionaries(ctx, locale)
    val picker = dictionaryFilePicker(locale)
    ThreeButtonAlertDialog(
        onDismissRequest = onDismissRequest,
        onConfirmed = {},
        confirmButtonText = null,
        cancelButtonText = stringResource(R.string.dialog_close),
        title = { Text(locale.localizedDisplayName(ctx)) },
        text = {
            Column {
                if (hasInternal) {
                    val color = if (dictionaries.none { it.startsWith(Dictionary.TYPE_MAIN + ":") }) MaterialTheme.colorScheme.onSurface
                    else MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f) // for disabled look
                    Text(stringResource(R.string.internal_dictionary_summary), color = color, modifier = Modifier.fillMaxWidth())
                }
                dictionaries.forEach {
                    val header = DictionaryInfoUtils.getDictionaryFileHeaderOrNull(it)
                    val type = header?.mIdString?.substringBefore(":")
                    var showDeleteDialog by remember { mutableStateOf(false) }
                    if (header != null) {
                        HorizontalDivider()
                        Row(
                            horizontalArrangement = Arrangement.SpaceBetween,
                            verticalAlignment = Alignment.CenterVertically,
                            modifier = Modifier.fillMaxWidth().padding(vertical = 8.dp)
                        ) {
                            Column {
                                Text(header.info(LocalContext.current.resources.configuration.locale()), style = MaterialTheme.typography.bodyMedium)
                            }
                            IconButton(
                                onClick = { showDeleteDialog = true }
                            ) { Icon(painterResource(R.drawable.ic_bin), stringResource(R.string.delete)) }
                        }
                    }
                    if (showDeleteDialog)
                        ConfirmationDialog(
                            onDismissRequest = { showDeleteDialog = false },
                            onConfirmed = { it.delete() },
                            text = { Text(stringResource(R.string.remove_dictionary_message, type ?: ""))}
                        )
                }
            }
        },
        neutralButtonText = stringResource(R.string.add_new_dictionary_title),
        onNeutral = {
            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
                .addCategory(Intent.CATEGORY_OPENABLE)
                .setType("application/octet-stream")
            picker.launch(intent)
        }
    )
}