Introduce MediaServersViewModel. Basic things for now.

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/mediaServers/MediaServersViewModel.kt

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2024 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.actions.mediaServers
+
+import androidx.lifecycle.ViewModel
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.Nip96MediaServers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import org.czeal.rfc3986.URIReference
+
+class MediaServersViewModel : ViewModel() {
+    lateinit var account: Account
+
+    private val _fileServers = MutableStateFlow<List<Nip96MediaServers.ServerName>>(emptyList())
+    val fileServers = _fileServers.asStateFlow()
+    var isModified = false
+
+    fun load(account: Account) {
+        this.account = account
+        refresh()
+    }
+
+    fun refresh() {
+        isModified = false
+        _fileServers.update {
+            val obtainedFileServers = account.getFileServersList()?.servers() ?: emptyList()
+            obtainedFileServers.map { serverUrl ->
+                Nip96MediaServers
+                    .ServerName(
+                        URIReference.parse(serverUrl).host.value,
+                        serverUrl,
+                    )
+            }
+        }
+    }
+
+    fun addServer(serverUrl: String) {
+    }
+
+    fun removeServer(
+        name: String = "",
+        serverUrl: String,
+    ) {
+    }
+
+    fun removeAll() {
+        _fileServers.update { emptyList() }
+        isModified = true
+    }
+}