add an admin RPC to archive documents

lib/commands/admin-rpc.js

@@ -146,6 +146,32 @@ var flushCache = function (Env, Server,  cb) {
     cb(void 0, true);
 };
 
+// CryptPad_AsyncStore.rpc.send('ADMIN', ['ARCHIVE_DOCUMENT', documentID], console.log)
+var archiveDocument = function (Env, Server, cb, data) {
+    var id = Array.isArray(data) && data[1];
+    if (typeof(id) !== 'string' || id.length < 32) { return void cb("EINVAL"); }
+
+    switch (id.length) {
+        case 32:
+            return void Env.msgStore.archiveChannel(id, cb);
+        case 48:
+            return void Env.blobStore.archive.blob(id, cb);
+        default:
+            return void cb("INVALID_ID_LENGTH");
+    }
+
+    // archival for blob proofs isn't automated, but evict-inactive.js will
+    // clean up orpaned blob proofs
+    // Env.blobStore.archive.proof(userSafeKey, blobId, cb)
+};
+
+var restoreArchivedDocument = function (Env, Server, cb) {
+    // Env.msgStore.restoreArchivedChannel(channelName, cb)
+    // Env.blobStore.restore.blob(blobId, cb)
+    // Env.blobStore.restore.proof(userSafekey, blobId, cb)
+
+    cb("NOT_IMPLEMENTED");
+};
 
 // CryptPad_AsyncStore.rpc.send('ADMIN', ['SET_DEFAULT_STORAGE_LIMIT', 1024 * 1024 * 1024 /* 1GB */], console.log)
 var setDefaultStorageLimit = function (Env, Server, cb, data) {
@@ -174,6 +200,9 @@ var commands = {
     GET_FILE_DESCRIPTOR_LIMIT: getFileDescriptorLimit,
     SET_DEFAULT_STORAGE_LIMIT: setDefaultStorageLimit,
     GET_CACHE_STATS: getCacheStats,
+
+    ARCHIVE_DOCUMENT: archiveDocument,
+    RESTORE_ARCHIVED_DOCUMENT: restoreArchivedDocument,
 };
 
 Admin.command = function (Env, safeKey, data, _cb, Server) {