/*
 * ImageToolbox is an image editor for android
 * Copyright (c) 2026 T8RIN (Malik Mukhametzyanov)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * You should have received a copy of the Apache License
 * along with this program.  If not, see <http://www.apache.org/licenses/LICENSE-2.0>.
 */

package com.t8rin.imagetoolbox.feature.settings.presentation.components.additional

import android.net.Uri
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.IntrinsicSize
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import com.t8rin.imagetoolbox.core.resources.Icons
import androidx.compose.material3.MaterialTheme
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import com.t8rin.imagetoolbox.core.domain.model.MimeType
import com.t8rin.imagetoolbox.core.resources.R
import com.t8rin.imagetoolbox.core.resources.icons.Extension
import com.t8rin.imagetoolbox.core.resources.icons.FileExport
import com.t8rin.imagetoolbox.core.resources.icons.FileImport
import com.t8rin.imagetoolbox.core.resources.icons.FontDownload
import com.t8rin.imagetoolbox.core.settings.presentation.model.UiFontFamily
import com.t8rin.imagetoolbox.core.ui.theme.takeColorFromScheme
import com.t8rin.imagetoolbox.core.ui.utils.content_pickers.rememberFilePicker
import com.t8rin.imagetoolbox.core.ui.widget.enhanced.EnhancedBottomSheetDefaults
import com.t8rin.imagetoolbox.core.ui.widget.enhanced.EnhancedButton
import com.t8rin.imagetoolbox.core.ui.widget.enhanced.EnhancedModalBottomSheet
import com.t8rin.imagetoolbox.core.ui.widget.enhanced.enhancedFlingBehavior
import com.t8rin.imagetoolbox.core.ui.widget.modifier.ShapeDefaults
import com.t8rin.imagetoolbox.core.ui.widget.modifier.negativePadding
import com.t8rin.imagetoolbox.core.ui.widget.other.GradientEdge
import com.t8rin.imagetoolbox.core.ui.widget.other.InfoContainer
import com.t8rin.imagetoolbox.core.ui.widget.preferences.PreferenceItemDefaults
import com.t8rin.imagetoolbox.core.ui.widget.preferences.PreferenceRow
import com.t8rin.imagetoolbox.core.ui.widget.text.AutoSizeText
import com.t8rin.imagetoolbox.core.ui.widget.text.TitleItem

@Composable
internal fun PickFontFamilySheet(
    visible: Boolean,
    onDismiss: () -> Unit,
    onFontSelected: (UiFontFamily) -> Unit,
    onAddFont: (Uri) -> Unit,
    onRemoveFont: (UiFontFamily.Custom) -> Unit,
    onExportFonts: () -> Unit
) {
    EnhancedModalBottomSheet(
        visible = visible,
        onDismiss = {
            if (!it) onDismiss()
        },
        sheetContent = {
            val defaultEntries = UiFontFamily.defaultEntries
            val customEntries = UiFontFamily.customEntries

            LazyColumn(
                contentPadding = PaddingValues(16.dp),
                verticalArrangement = Arrangement.spacedBy(8.dp),
                flingBehavior = enhancedFlingBehavior()
            ) {
                stickyHeader {
                    Column(
                        modifier = Modifier
                            .negativePadding(horizontal = 16.dp)
                            .background(EnhancedBottomSheetDefaults.containerColor)
                            .padding(horizontal = 16.dp)
                    ) {
                        Spacer(modifier = Modifier.height(20.dp))
                        Row(
                            horizontalArrangement = Arrangement.spacedBy(4.dp),
                            modifier = Modifier.height(IntrinsicSize.Max)
                        ) {
                            val pickFileLauncher = rememberFilePicker(
                                mimeType = MimeType.Font,
                                onSuccess = onAddFont
                            )
                            PreferenceRow(
                                title = stringResource(R.string.import_font),
                                onClick = pickFileLauncher::pickFile,
                                shape = ShapeDefaults.start,
                                titleFontStyle = PreferenceItemDefaults.TitleFontStyleCentered,
                                startIcon = Icons.Rounded.FileImport,
                                modifier = Modifier
                                    .weight(1f)
                                    .fillMaxHeight(),
                                color = MaterialTheme.colorScheme.primaryContainer
                            )

                            val canExport = customEntries.isNotEmpty()

                            PreferenceRow(
                                title = stringResource(R.string.export_fonts),
                                onClick = onExportFonts,
                                shape = ShapeDefaults.end,
                                enabled = canExport,
                                startIcon = Icons.Rounded.FileExport,
                                modifier = Modifier
                                    .weight(1f)
                                    .fillMaxHeight(),
                                color = takeColorFromScheme {
                                    if (canExport) primaryContainer
                                    else surfaceVariant
                                },
                                titleFontStyle = PreferenceItemDefaults.TitleFontStyleCentered
                            )
                        }
                        Spacer(modifier = Modifier.height(8.dp))
                    }
                    GradientEdge(
                        modifier = Modifier
                            .fillMaxWidth()
                            .height(16.dp),
                        startColor = EnhancedBottomSheetDefaults.containerColor,
                        endColor = Color.Transparent
                    )
                }

                items(
                    items = defaultEntries,
                    key = { it.name ?: "sys" }
                ) { font ->
                    FontItem(
                        font = font,
                        onFontSelected = onFontSelected,
                        onRemoveFont = onRemoveFont
                    )
                }
                if (customEntries.isNotEmpty()) {
                    item {
                        InfoContainer(
                            text = stringResource(R.string.imported_fonts),
                            icon = Icons.Outlined.Extension,
                            modifier = Modifier
                                .fillMaxWidth()
                                .padding(8.dp),
                            contentColor = MaterialTheme.colorScheme.onTertiaryContainer.copy(alpha = 0.6f),
                            containerColor = MaterialTheme.colorScheme.tertiaryContainer.copy(0.4f)
                        )
                    }
                    items(
                        items = customEntries,
                        key = { it.name ?: "sys" }
                    ) { font ->
                        FontItem(
                            font = font,
                            onFontSelected = onFontSelected,
                            onRemoveFont = onRemoveFont
                        )
                    }
                }
            }
        },
        confirmButton = {
            Row(
                verticalAlignment = Alignment.CenterVertically
            ) {
                EnhancedButton(
                    onClick = onDismiss,
                    containerColor = MaterialTheme.colorScheme.secondaryContainer
                ) {
                    AutoSizeText(stringResource(R.string.close))
                }
            }
        },
        title = {
            TitleItem(
                icon = Icons.Rounded.FontDownload,
                text = stringResource(R.string.font),
            )
        }
    )
}