/*
 * Copyright (C) 2025 The Android Open Source Project
 *
 * 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.
 */

package com.android.systemui.screencapture.common.ui.viewmodel

import android.graphics.Bitmap
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.compose.ui.graphics.Color
import com.android.app.tracing.coroutines.launchTraced
import com.android.systemui.lifecycle.HydratedActivatable
import com.android.systemui.screencapture.common.domain.interactor.ScreenCaptureIconInteractor
import com.android.systemui.screencapture.common.domain.interactor.ScreenCaptureLabelInteractor
import com.android.systemui.screencapture.common.domain.interactor.ScreenCaptureThumbnailInteractor
import com.android.systemui.screencapture.common.domain.model.ScreenCaptureRecentTask
import dagger.assisted.Assisted
import dagger.assisted.AssistedFactory
import dagger.assisted.AssistedInject
import kotlinx.coroutines.coroutineScope

/** Data for a UI to display a recent task. */
class RecentTaskViewModel
@AssistedInject
constructor(
    @Assisted val task: ScreenCaptureRecentTask,
    private val iconInteractor: ScreenCaptureIconInteractor,
    private val labelInteractor: ScreenCaptureLabelInteractor,
    private val thumbnailInteractor: ScreenCaptureThumbnailInteractor,
) : HydratedActivatable() {

    var icon by mutableStateOf<Result<Bitmap>?>(null)
        private set

    var label by mutableStateOf<Result<CharSequence>?>(null)
        private set

    var thumbnail by mutableStateOf<Result<Bitmap>?>(null)
        private set

    val backgroundColorOpaque: Color = task.backgroundColor.opaque()

    override suspend fun onActivated() {
        coroutineScope {
            launchTraced { icon = iconInteractor.loadIcon(task) }
            launchTraced { label = labelInteractor.loadLabel(task) }
            launchTraced { thumbnail = thumbnailInteractor.loadThumbnail(task) }
        }
    }

    private fun Int?.opaque(): Color = this?.let { Color(it).copy(alpha = 1f) } ?: Color.Black

    @AssistedFactory
    interface Factory {
        fun create(task: ScreenCaptureRecentTask): RecentTaskViewModel
    }
}