feat: 下载功能初步完成

app/src/main/java/io/legado/app/ui/book/remote/RemoteBookActivity.kt

@@ -29,10 +29,13 @@ class RemoteBookActivity : VMBaseActivity<ActivityRemoteBookBinding,RemoteBookVi
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
+//        initEvent()
         initData()
 //        toastOnUi("远程书籍")
     }
 
+
+
     private fun initView() {
         binding.recyclerView.layoutManager = LinearLayoutManager(this)
         binding.recyclerView.adapter = adapter
@@ -48,20 +51,21 @@ class RemoteBookActivity : VMBaseActivity<ActivityRemoteBookBinding,RemoteBookVi
 //        viewModel.getRemoteBooks().observe(this, {
 //            adapter.submitList(it)
 //        })
-
+        viewModel.loadRemoteBookList()
 
         launch {
-            Log.e("TAG", "2")
+            viewModel.dataFlow.collect { remoteBooks ->
-            viewModel.dataFlow.conflate().collect { remoteBooks ->
                 adapter.setItems(remoteBooks)
             }
         }
 
 
 //        toastOnUi("1")
-        viewModel.loadRemoteBookList()
+
     }
-    override fun showRemoteBookInfo(book: Book) {
+
-        TODO("Not yet implemented")
+
+    override fun download(remoteBook: RemoteBook) {
+        viewModel.downloadRemoteBook(remoteBook.url)
     }
 }

app/src/main/java/io/legado/app/ui/book/remote/RemoteBookAdapter.kt

@@ -2,14 +2,23 @@ package io.legado.app.ui.book.remote
 
 import android.content.Context
 import android.view.ViewGroup
+import cn.hutool.core.date.LocalDateTimeUtil
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.RecyclerAdapter
 import io.legado.app.data.entities.Book
 import io.legado.app.databinding.ItemRemoteBookBinding
+import io.legado.app.utils.ConvertUtils
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.toastOnUi
+import splitties.init.appCtx
 
 
+/**
+ * 适配器
+ * @author qianfanguojin
+ */
 class RemoteBookAdapter (context: Context, val callBack: CallBack) :
-    RecyclerAdapter<String, ItemRemoteBookBinding>(context){
+    RecyclerAdapter<RemoteBook, ItemRemoteBookBinding>(context){
 
     override fun getViewBinding(parent: ViewGroup): ItemRemoteBookBinding {
         return ItemRemoteBookBinding.inflate(inflater, parent, false)
@@ -25,19 +34,29 @@ class RemoteBookAdapter (context: Context, val callBack: CallBack) :
     override fun convert(
         holder: ItemViewHolder,
         binding: ItemRemoteBookBinding,
-        item: String,
+        item: RemoteBook,
         payloads: MutableList<Any>
     ) {
         binding.run {
-           tvName.text = item
+            tvName.text = item.name.substringBeforeLast(".")
+            tvContentType.text = item.name.substringAfterLast(".")
+            tvSize.text = ConvertUtils.formatFileSize(item.size)
+            tvDate.text = LocalDateTimeUtil.format(LocalDateTimeUtil.of(item.lastModify), "yyyy-MM-dd")
         }
     }
 
     override fun registerListener(holder: ItemViewHolder, binding: ItemRemoteBookBinding) {
+        binding.btnDownload.setOnClickListener {
+                getItem(holder.layoutPosition)?.let {
+                    context.toastOnUi("开始下载")
+                    callBack.download(it)
+                }
+        }
+
 
     }
 
     interface CallBack {
-        fun showRemoteBookInfo(book: Book)
+        fun download(remoteBook: RemoteBook)
     }
 }

app/src/main/java/io/legado/app/ui/book/remote/RemoteBookViewModel.kt

@@ -2,36 +2,43 @@ package io.legado.app.ui.book.remote
 
 import android.app.Application
 import android.util.Log
-import android.widget.Toast
 import io.legado.app.base.BaseViewModel
-import io.legado.app.utils.FileDoc
+import io.legado.app.constant.PreferKey
-import kotlinx.coroutines.Dispatchers
+import io.legado.app.lib.webdav.Authorization
+import io.legado.app.lib.webdav.WebDav
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.exists
+import io.legado.app.utils.externalFiles
+import io.legado.app.utils.getPrefString
+import kotlinx.coroutines.*
 import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.flowOn
-import kotlinx.coroutines.flow.map
+import splitties.init.appCtx
-import kotlinx.coroutines.withContext
+import java.io.File
+import java.nio.charset.Charset
 import java.util.*
-import kotlin.reflect.typeOf
 
 class RemoteBookViewModel(application: Application): BaseViewModel(application){
-
+    private val remoteBookFolderName = "book_remote"
     private var dataCallback : DataCallback? = null
     var dataFlowStart: (() -> Unit)? = null
-    val dataFlow = callbackFlow<List<String>> {
+    private var authorization: Authorization? = null
+
 
-        val list = Collections.synchronizedList(ArrayList<String>())
+    val dataFlow = callbackFlow<List<RemoteBook>> {
+
+        val list = Collections.synchronizedList(ArrayList<RemoteBook>())
 
         dataCallback = object : DataCallback {
 
-            override fun setItems(remoteFiles: List<String>) {
+            override fun setItems(remoteFiles: List<RemoteBook>) {
                 list.clear()
                 list.addAll(remoteFiles)
-                Log.e("TAG", ": 1", )
                 trySend(list)
             }
 
-            override fun addItems(remoteFiles: List<String>) {
+            override fun addItems(remoteFiles: List<RemoteBook>) {
                 list.addAll(remoteFiles)
                 trySend(list)
             }
@@ -41,28 +48,88 @@ class RemoteBookViewModel(application: Application): BaseViewModel(application){
                 trySend(emptyList())
             }
         }
-
 //        withContext(Dispatchers.Main) {
 //            dataFlowStart?.invoke()
 //        }
 
         awaitClose {
-            dataCallback = null
+//            dataCallback = null
         }
-    }.flowOn(Dispatchers.Main)
+    }.flowOn(Dispatchers.IO)
 
     fun loadRemoteBookList() {
-        Log.e("TAG", dataCallback.toString(), )
+        execute {
-        dataCallback?.setItems(listOf("1", "2", "3"))
+            dataCallback?.clear()
+            kotlin.runCatching {
+                authorization = null
+                val account = appCtx.getPrefString(PreferKey.webDavAccount)
+                val password = appCtx.getPrefString(PreferKey.webDavPassword)
+                if (!account.isNullOrBlank() && !password.isNullOrBlank()) {
+                    val mAuthorization = Authorization(account, password)
+                    authorization = mAuthorization
+                }
+            }
+            authorization?.let { it ->
+                val remoteWebDavFileList = WebDav("http://txc.qianfanguojin.top/",it).listFiles()
+                val remoteList = remoteWebDavFileList.map {
+                    RemoteBook(it.displayName,it.urlName,it.size,"epub",it.lastModify)
+                }
+                dataCallback?.setItems(remoteList)
+            }
+//            dataCallback?.setItems()
+        }
+//        dataCallback?.setItems(listOf("1", "2", "3"))
     }
 
+    fun downloadRemoteBook(urlName: String) {
+        execute {
+//            kotlin.runCatching {
+//                val remoteWebDavFile = WebDav("http://txc.qianfanguojin.top/",authorization!!).getFile(url)
+//                val remoteBook = RemoteBook(remoteWebDavFile.displayName,remoteWebDavFile.urlName,remoteWebDavFile.size,"epub",remoteWebDavFile.lastModify)
+//                dataCallback?.addItems(listOf(remoteBook))
+//            }
+
+            kotlin.runCatching {
+                authorization = null
+                val account = appCtx.getPrefString(PreferKey.webDavAccount)
+                val password = appCtx.getPrefString(PreferKey.webDavPassword)
+                if (!account.isNullOrBlank() && !password.isNullOrBlank()) {
+                    val mAuthorization = Authorization(account, password)
+                    authorization = mAuthorization
+                }
+            }
+
+            authorization?.let { it ->
+                Log.e("TAG", "downloadRemoteBook: 1", )
+                val saveFolder = "${appCtx.externalFiles.absolutePath}${File.separator}${remoteBookFolderName}"
+                FileUtils.createFolderIfNotExist(saveFolder).run{
+
+//                Log.e("TAG", "downloadRemoteBook: 2 ${appCtx.externalFiles.absoluteFile}", )
+                val trueCodeURLName = String(urlName.toByteArray(Charset.forName("GBK")), Charset.forName("UTF-8"))
+                withTimeout(15000L) {
+                    val webdav = WebDav("http://txc.qianfanguojin.top${trueCodeURLName}", it)
+                    webdav.downloadTo("${saveFolder}${trueCodeURLName}", true).apply {
+                    }
+                }
+                }
+            }
+        }
+    }
     interface DataCallback {
 
-        fun setItems(remoteFiles: List<String>)
+        fun setItems(remoteFiles: List<RemoteBook>)
 
-        fun addItems(remoteFiles: List<String>)
+        fun addItems(remoteFiles: List<RemoteBook>)
 
         fun clear()
 
     }
 }
+
+data class RemoteBook(
+    val name: String,
+    val url: String,
+    val size: Long,
+    val contentType: String,
+    val lastModify: Long
+)

app/src/main/res/layout/activity_remote_book.xml

@@ -36,9 +36,11 @@
 
     </io.legado.app.ui.widget.dynamiclayout.DynamicFrameLayout>
 
-    <io.legado.app.ui.widget.SelectActionBar
+<!--    <io.legado.app.ui.widget.SelectActionBar-->
-        android:id="@+id/select_action_bar"
+<!--        android:id="@+id/select_action_bar"-->
-        android:layout_width="match_parent"
+<!--        android:layout_width="match_parent"-->
-        android:layout_height="wrap_content"
+<!--        android:layout_height="wrap_content"-->
-        app:layout_constraintBottom_toBottomOf="parent" />
+<!--        app:layout_constraintBottom_toBottomOf="parent"-->
+<!--        app:layout_constraintTop_toBottomOf="@id/content_view"-->
+<!--        />-->
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_remote_book.xml

@@ -55,7 +55,7 @@
             android:layout_height="wrap_content"
             android:ellipsize="end"
             android:lines="1"
-            tools:text="\u4e28"
+            android:text="\u4e28"
             android:textColor="@color/tv_text_summary"
             android:textSize="11sp" />
 
@@ -96,10 +96,9 @@
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         android:layout_marginTop="3dp"
-        android:id="@+id/tv_download"
         >
         <Button
-            android:id="@+id/tv_download1"
+            android:id="@+id/btn_download"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="下载"