mobile: No cloud repo creation more explicit

Before this change, there was only one way to create the local
no cloud repo on the device. The user needed to add at least
one dive to the no cloud account (so that there is something
to save). While this worked in some scenarios, it could also
get things in an inconsistent state: credential status = CS_NOCLOUD
but no local repo. This was a dead end.

In this commit, the creation of the no cloud repo is made more
explicit. When asking for no cloud mode, just create an (empty)
repo for it when it does not yet exist, and otherwise, just
open the existing (possibly empty) repo.

Now, a user can have no cloud repo, next to (any number of)
cloud accounts.

This leaves one functional aspect left: how does a user abandon
the no cloud repo, by merging his data into a true cloud
account. This is code for this, that tries to do this merge in
a smart way. This seems to be broken (too). To be clear: this
is no part of this commit.

Fixes: #667

Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>

3 files changed, 38 insertions, 1 deletions

diff --git a/mobile-widgets/qml/CloudCredentials.qml b/mobile-widgets/qml/CloudCredentials.qml
index 083bbdc65..bbf33a633 100644
--- a/mobile-widgets/qml/CloudCredentials.qml
+++ b/mobile-widgets/qml/CloudCredentials.qml
@@ -148,6 +148,7 @@ Item {
 					manager.syncToCloud = false
 					manager.credentialStatus = QMLManager.CS_NOCLOUD
 					manager.saveCloudCredentials()
+					manager.openNoCloudRepo()
 				}
 			}
 		}
diff --git a/mobile-widgets/qmlmanager.cpp b/mobile-widgets/qmlmanager.cpp
index 9df276d6f..6d2d8039a 100644
--- a/mobile-widgets/qmlmanager.cpp
+++ b/mobile-widgets/qmlmanager.cpp
@@ -247,6 +247,13 @@ void QMLManager::mergeLocalRepo()
 	process_dives(true, false);
 }
 
+void QMLManager::clearCredentials()
+{
+	setCloudUserName(NULL);
+	setCloudPassword(NULL);
+	setCloudPin(NULL);
+}
+
 void QMLManager::cancelCredentialsPinSetup()
 {
 	/*
@@ -374,7 +381,7 @@ void QMLManager::saveCloudCredentials()
 
 	cloudCredentialsChanged |= !same_string(prefs.cloud_storage_password, qPrintable(cloudPwd));
 
-	if (!cloudCredentialsChanged) {
+	if (credentialStatus() != CS_NOCLOUD && !cloudCredentialsChanged) {
 		// just go back to the dive list
 		setCredentialStatus(oldStatus());
 	}
@@ -1067,6 +1074,32 @@ void QMLManager::changesNeedSaving()
 	saveChangesCloud(false);
 #endif
 }
+
+void QMLManager::openNoCloudRepo()
+/*
+ * Open the No Cloud repo. In case this repo does not (yet)
+ * exists, create one first. When done, open the repo, which
+ * is obviously empty when just created.
+ */
+{
+	char *filename = NOCLOUD_LOCALSTORAGE;
+	const char *branch;
+	struct git_repository *git;
+
+	git = is_git_repository(filename, &branch, NULL, false);
+
+	if (git == dummy_git_repository) {
+		if (git_create_local_repo(filename))
+			appendTextToLog(get_error_string());
+		set_filename(filename, true);
+		GeneralSettingsObjectWrapper s(this);
+		s.setDefaultFilename(filename);
+		s.setDefaultFileBehavior(LOCAL_DEFAULT_FILE);
+	}
+
+	openLocalThenRemote(filename);
+}
+
 void QMLManager::saveChangesLocal()
 {
 	if (unsaved_changes()) {
@@ -1445,6 +1478,7 @@ void QMLManager::setCredentialStatus(const cloud_status_qml value)
 		if (value == CS_NOCLOUD) {
 			appendTextToLog("Switching to no cloud mode");
 			set_filename(NOCLOUD_LOCALSTORAGE, true);
+			clearCredentials();
 		}
 		m_credentialStatus = value;
 		emit credentialStatusChanged();
diff --git a/mobile-widgets/qmlmanager.h b/mobile-widgets/qmlmanager.h
index d89c1e27d..cde8b8dec 100644
--- a/mobile-widgets/qmlmanager.h
+++ b/mobile-widgets/qmlmanager.h
@@ -163,6 +163,7 @@ public slots:
 			   QString diveMaster, QString weight, QString notes, QString startpressure,
 			   QString endpressure, QString gasmix, QString cylinder, int rating, int visibility);
 	void changesNeedSaving();
+	void openNoCloudRepo();
 	void saveChangesLocal();
 	void saveChangesCloud(bool forceRemoteSync);
 	void deleteDive(int id);
@@ -175,6 +176,7 @@ public slots:
 	void populateGpsData();
 	void cancelDownloadDC();
 	void clearGpsData();
+	void clearCredentials();
 	void cancelCredentialsPinSetup();
 	void finishSetup();
 	void openLocalThenRemote(QString url);