/*
 * Copyright KG Soft
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */
@file:OptIn(ExperimentalHorologistApi::class)

package com.kgurgul.cpuinfo.wear.features.information.ram

import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import androidx.wear.compose.material.MaterialTheme
import androidx.wear.compose.material.Text
import com.google.android.horologist.annotations.ExperimentalHorologistApi
import com.google.android.horologist.compose.layout.ScalingLazyColumn
import com.google.android.horologist.compose.layout.ScalingLazyColumnDefaults
import com.google.android.horologist.compose.layout.ScreenScaffold
import com.google.android.horologist.compose.layout.rememberResponsiveColumnState
import com.google.android.horologist.compose.material.ListHeaderDefaults.firstItemPadding
import com.google.android.horologist.compose.material.ResponsiveListHeader
import com.kgurgul.cpuinfo.features.information.ram.RamInfoViewModel
import com.kgurgul.cpuinfo.shared.Res
import com.kgurgul.cpuinfo.shared.available_memory
import com.kgurgul.cpuinfo.shared.ram
import com.kgurgul.cpuinfo.shared.threshold
import com.kgurgul.cpuinfo.shared.total_memory
import com.kgurgul.cpuinfo.utils.Utils
import com.kgurgul.cpuinfo.wear.ui.components.WearCpuChip
import org.jetbrains.compose.resources.stringResource
import org.koin.compose.viewmodel.koinViewModel

@Composable
fun WearRamInfoScreen(viewModel: RamInfoViewModel = koinViewModel()) {
    val uiState by viewModel.uiStateFlow.collectAsStateWithLifecycle()
    WearRamInfoScreen(uiState = uiState)
}

@Composable
fun WearRamInfoScreen(uiState: RamInfoViewModel.UiState) {
    val columnState =
        rememberResponsiveColumnState(
            contentPadding =
                ScalingLazyColumnDefaults.padding(
                    first = ScalingLazyColumnDefaults.ItemType.Text,
                    last = ScalingLazyColumnDefaults.ItemType.Chip,
                )
        )
    ScreenScaffold(scrollState = columnState) {
        ScalingLazyColumn(columnState = columnState) {
            item {
                ResponsiveListHeader(contentPadding = firstItemPadding()) {
                    Text(
                        text = stringResource(Res.string.ram),
                        color = MaterialTheme.colors.onBackground,
                    )
                }
            }
            uiState.ramData?.let { ramData ->
                item(key = "__total") {
                    WearCpuChip(
                        label = stringResource(Res.string.total_memory),
                        secondaryLabel = Utils.convertBytesToMega(ramData.total),
                    )
                }
                item(key = "__available") {
                    WearCpuChip(
                        label = stringResource(Res.string.available_memory),
                        secondaryLabel =
                            "${Utils.convertBytesToMega(ramData.available)} " +
                                "(${ramData.availablePercentage}%)",
                    )
                }
                if (ramData.threshold != -1L) {
                    item(key = "__threshold") {
                        WearCpuChip(
                            label = stringResource(Res.string.threshold),
                            secondaryLabel = Utils.convertBytesToMega(ramData.threshold),
                        )
                    }
                }
            }
        }
    }
}
