/*
 * 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.privatespace.logging

import android.multiuser.Flags
import android.platform.test.annotations.RequiresFlagsEnabled
import android.platform.test.flag.junit.CheckFlagsRule
import android.platform.test.flag.junit.DeviceFlagsValueProvider
import androidx.test.ext.junit.runners.AndroidJUnit4
import com.google.common.truth.Truth.assertThat
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith

@RequiresFlagsEnabled(Flags.FLAG_ENABLE_MOVING_CONTENT_INTO_PRIVATE_SPACE)
@RunWith(AndroidJUnit4::class)
class FilesLoggingDetailsTest {
    @get:Rule val checkFlagsRule: CheckFlagsRule = DeviceFlagsValueProvider.createCheckFlagsRule()

    private lateinit var loggingDetails: FilesLoggingDetails

    @Before
    fun setUp() {
        loggingDetails = FilesLoggingDetails()
    }

    @Test
    fun constructor_onInitialization_allPropertiesAreEmpty() {
        assertThat(loggingDetails.totalSuccessFilesSize).isEqualTo(0L)
        assertThat(loggingDetails.totalFailedFilesSize).isEqualTo(0L)
        assertThat(loggingDetails.successFileMimeTypes).isEmpty()
        assertThat(loggingDetails.failedFileDetails).isEmpty()
    }

    @Test
    fun addSuccessFileDetails_withSingleFile_updatesOnlySuccessState() {
        loggingDetails.addSuccessFileDetails(sizeBytes = 123L, mimeType = "image/jpeg")

        assertThat(loggingDetails.totalSuccessFilesSize).isEqualTo(123L)
        assertThat(loggingDetails.successFileMimeTypes).containsExactly("image/jpeg")
        assertThat(loggingDetails.totalFailedFilesSize).isEqualTo(0L)
        assertThat(loggingDetails.failedFileDetails).isEmpty()
    }

    @Test
    fun addSuccessFileDetails_withMultipleFiles_accumulatesOnlySuccessTotals() {
        loggingDetails.addSuccessFileDetails(sizeBytes = 123L, mimeType = "image/png")
        loggingDetails.addSuccessFileDetails(sizeBytes = 111L, mimeType = "video/mp4")

        assertThat(loggingDetails.totalSuccessFilesSize).isEqualTo(234L)
        assertThat(loggingDetails.successFileMimeTypes).containsExactly("image/png", "video/mp4")

        assertThat(loggingDetails.totalFailedFilesSize).isEqualTo(0L)
        assertThat(loggingDetails.failedFileDetails).isEmpty()
    }

    @Test
    fun addFailedFileDetails_withSingleFile_updatesOnlyFailedState() {
        val expectedDetails =
            FilesLoggingDetails.FailedFileDetails(errorCode = 3, mimeType = "application/pdf")

        loggingDetails.addFailedFileDetails(
            errorCode = 3,
            sizeBytes = 512L,
            mimeType = "application/pdf",
        )

        assertThat(loggingDetails.totalFailedFilesSize).isEqualTo(512L)
        assertThat(loggingDetails.failedFileDetails).containsExactly(expectedDetails)

        assertThat(loggingDetails.totalSuccessFilesSize).isEqualTo(0L)
        assertThat(loggingDetails.successFileMimeTypes).isEmpty()
    }

    @Test
    fun addFailedFileDetails_withMultipleFiles_accumulatesOnlyFailedTotals() {
        val expectedDetails1 =
            FilesLoggingDetails.FailedFileDetails(errorCode = 2, mimeType = "text/plain")
        val expectedDetails2 =
            FilesLoggingDetails.FailedFileDetails(errorCode = 1, mimeType = "audio/mpeg")

        loggingDetails.addFailedFileDetails(
            errorCode = 2,
            sizeBytes = 100L,
            mimeType = "text/plain",
        )
        loggingDetails.addFailedFileDetails(
            errorCode = 1,
            sizeBytes = 300L,
            mimeType = "audio/mpeg",
        )

        assertThat(loggingDetails.totalFailedFilesSize).isEqualTo(400L)
        assertThat(loggingDetails.failedFileDetails)
            .containsExactly(expectedDetails1, expectedDetails2)

        assertThat(loggingDetails.totalSuccessFilesSize).isEqualTo(0L)
        assertThat(loggingDetails.successFileMimeTypes).isEmpty()
    }

    @Test
    fun addSuccessAndFailedDetails_mixedCalls_updatesStatesCorrectly() {
        val expectedFailedDetails =
            FilesLoggingDetails.FailedFileDetails(errorCode = 99, mimeType = "application/zip")

        loggingDetails.addSuccessFileDetails(sizeBytes = 1000L, mimeType = "image/gif")
        loggingDetails.addFailedFileDetails(
            errorCode = 99,
            sizeBytes = 200L,
            mimeType = "application/zip",
        )
        loggingDetails.addSuccessFileDetails(sizeBytes = 1500L, mimeType = "image/webp")

        assertThat(loggingDetails.totalSuccessFilesSize).isEqualTo(2500L)
        assertThat(loggingDetails.successFileMimeTypes).containsExactly("image/gif", "image/webp")
        assertThat(loggingDetails.totalFailedFilesSize).isEqualTo(200L)
        assertThat(loggingDetails.failedFileDetails).containsExactly(expectedFailedDetails)
    }
}