forked from GitHub-Mirror/riotX-android
122 lines
5.3 KiB
Kotlin
122 lines
5.3 KiB
Kotlin
/*
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* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package im.vector.matrix.android.internal.session
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import android.content.Context
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import android.os.Environment
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import arrow.core.Try
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import im.vector.matrix.android.api.MatrixCallback
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import im.vector.matrix.android.api.auth.data.SessionParams
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import im.vector.matrix.android.api.session.content.ContentUrlResolver
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import im.vector.matrix.android.api.session.file.FileService
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import im.vector.matrix.android.internal.crypto.attachments.ElementToDecrypt
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import im.vector.matrix.android.internal.crypto.attachments.MXEncryptedAttachments
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import im.vector.matrix.android.internal.extensions.foldToCallback
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import im.vector.matrix.android.internal.util.MatrixCoroutineDispatchers
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import im.vector.matrix.android.internal.util.md5
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import im.vector.matrix.android.internal.util.writeToFile
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import kotlinx.coroutines.GlobalScope
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.withContext
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import okhttp3.OkHttpClient
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import okhttp3.Request
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import timber.log.Timber
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import java.io.File
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import java.io.IOException
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import javax.inject.Inject
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internal class DefaultFileService @Inject constructor(private val context: Context,
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private val sessionParams: SessionParams,
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private val contentUrlResolver: ContentUrlResolver,
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private val coroutineDispatchers: MatrixCoroutineDispatchers) : FileService {
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val okHttpClient = OkHttpClient()
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/**
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* Download file in the cache folder, and eventually decrypt it
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* TODO implement clear file, to delete "MF"
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*/
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override fun downloadFile(downloadMode: FileService.DownloadMode,
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id: String,
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fileName: String,
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url: String?,
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elementToDecrypt: ElementToDecrypt?,
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callback: MatrixCallback<File>) {
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GlobalScope.launch(coroutineDispatchers.main) {
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withContext(coroutineDispatchers.io) {
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Try {
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val folder = getFolder(downloadMode, id)
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File(folder, fileName)
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}.flatMap { destFile ->
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if (!destFile.exists() || downloadMode == FileService.DownloadMode.TO_EXPORT) {
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Try {
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val resolvedUrl = contentUrlResolver.resolveFullSize(url) ?: throw IllegalArgumentException("url is null")
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val request = Request.Builder()
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.url(resolvedUrl)
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.build()
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val response = okHttpClient.newCall(request).execute()
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val inputStream = response.body()?.byteStream()
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Timber.v("Response size ${response.body()?.contentLength()} - Stream available: ${inputStream?.available()}")
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if (!response.isSuccessful
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|| inputStream == null) {
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throw IOException()
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}
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if (elementToDecrypt != null) {
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Timber.v("## decrypt file")
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MXEncryptedAttachments.decryptAttachment(inputStream, elementToDecrypt) ?: throw IllegalStateException("Decryption error")
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} else {
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inputStream
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}
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}
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.map { inputStream ->
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writeToFile(inputStream, destFile)
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destFile
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}
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} else {
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Try.just(destFile)
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}
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}
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}
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.foldToCallback(callback)
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}
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}
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private fun getFolder(downloadMode: FileService.DownloadMode, id: String): File {
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return when (downloadMode) {
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FileService.DownloadMode.FOR_INTERNAL_USE -> {
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// Create dir tree (MF stands for Matrix File):
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// <cache>/MF/<md5(userId)>/<md5(id)>/
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val tmpFolderRoot = File(context.cacheDir, "MF")
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val tmpFolderUser = File(tmpFolderRoot, sessionParams.credentials.userId.md5())
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File(tmpFolderUser, id.md5())
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}
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FileService.DownloadMode.TO_EXPORT -> {
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Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
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}
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}
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.also { folder ->
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if (!folder.exists()) {
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folder.mkdirs()
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}
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}
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}
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}
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