command/partition: add command "delpartition"

src/command/AllCommands.cxx

@@ -103,6 +103,7 @@ static constexpr struct command commands[] = {
 	{ "decoders", PERMISSION_READ, 0, 0, handle_decoders },
 	{ "delete", PERMISSION_CONTROL, 1, 1, handle_delete },
 	{ "deleteid", PERMISSION_CONTROL, 1, 1, handle_deleteid },
+	{ "delpartition", PERMISSION_ADMIN, 1, 1, handle_delpartition },
 	{ "disableoutput", PERMISSION_ADMIN, 1, 1, handle_disableoutput },
 	{ "enableoutput", PERMISSION_ADMIN, 1, 1, handle_enableoutput },
 #ifdef ENABLE_DATABASE

src/command/PartitionCommands.cxx

@@ -112,6 +112,48 @@ handle_newpartition(Client &client, Request request, Response &response)
 	return CommandResult::OK;
 }
 
+CommandResult
+handle_delpartition(Client &client, Request request, Response &response)
+{
+	const char *name = request.front();
+	if (!IsValidPartitionName(name)) {
+		response.Error(ACK_ERROR_ARG, "bad name");
+		return CommandResult::ERROR;
+	}
+
+	auto &instance = client.GetInstance();
+	auto *partition = instance.FindPartition(name);
+	if (partition == nullptr) {
+		response.Error(ACK_ERROR_NO_EXIST, "no such partition");
+		return CommandResult::ERROR;
+	}
+
+	if (partition == &instance.partitions.front()) {
+		response.Error(ACK_ERROR_UNKNOWN,
+			       "cannot delete the default partition");
+		return CommandResult::ERROR;
+	}
+
+	if (!partition->clients.empty()) {
+		response.Error(ACK_ERROR_UNKNOWN,
+			       "partition still has clients");
+		return CommandResult::ERROR;
+	}
+
+	if (!partition->outputs.IsDummy()) {
+		response.Error(ACK_ERROR_UNKNOWN,
+			       "partition still has outputs");
+		return CommandResult::ERROR;
+	}
+
+	partition->BeginShutdown();
+	instance.DeletePartition(*partition);
+
+	instance.EmitIdle(IDLE_PARTITION);
+
+	return CommandResult::OK;
+}
+
 CommandResult
 handle_moveoutput(Client &client, Request request, Response &response)
 {

src/command/PartitionCommands.hxx

@@ -35,6 +35,9 @@ handle_listpartitions(Client &client, Request request, Response &response);
 CommandResult
 handle_newpartition(Client &client, Request request, Response &response);
 
+CommandResult
+handle_delpartition(Client &client, Request request, Response &response);
+
 CommandResult
 handle_moveoutput(Client &client, Request request, Response &response);