mirror of
https://github.com/inventree/inventree-app.git
synced 2025-04-28 05:26:47 +00:00
Refactor API connection code
This commit is contained in:
Oliver Walters
parent
1c0b469020
commit
7373805ea7
87
lib/api.dart
87
lib/api.dart
@ -109,13 +109,11 @@ class InvenTreeAPI {
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String makeUrl(String endpoint) => _makeUrl(endpoint);
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UserProfile _profile;
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UserProfile profile;
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// Authentication token (initially empty, must be requested)
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String _token = "";
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bool isConnected() => _token.isNotEmpty;
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/*
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* Check server connection and display messages if not connected.
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* Useful as a precursor check before performing operations.
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@ -154,8 +152,14 @@ class InvenTreeAPI {
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// Connection status flag - set once connection has been validated
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bool _connected = false;
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bool get connected {
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return _connected && baseUrl.isNotEmpty && _token.isNotEmpty;
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bool _connecting = true;
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bool isConnected() {
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return profile != null && _connected && baseUrl.isNotEmpty && _token.isNotEmpty;
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}
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bool isConnecting() {
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return !isConnected() && _connecting;
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}
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// Ensure we only ever create a single instance of the API class
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@ -167,35 +171,15 @@ class InvenTreeAPI {
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InvenTreeAPI._internal();
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Future<bool> connect(BuildContext context) async {
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_profile = await UserProfileDBManager().getSelectedProfile();
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if (_profile == null) {
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await showErrorDialog(
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context,
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"Select Profile",
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"User profile not selected"
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);
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return false;
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}
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return connectToServer(context);
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}
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Future<bool> connectToServer(BuildContext context) async {
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Future<bool> _connect(BuildContext context) async {
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/* Address is the base address for the InvenTree server,
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* e.g. http://127.0.0.1:8000
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*/
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if (_profile == null) return false;
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String errorMessage = "";
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String address = _profile.server.trim();
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String username = _profile.username.trim();
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String password = _profile.password.trim();
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String address = profile.server.trim();
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String username = profile.username.trim();
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String password = profile.password.trim();
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if (address.isEmpty || username.isEmpty || password.isEmpty) {
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await showErrorDialog(
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@ -220,19 +204,18 @@ class InvenTreeAPI {
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*/
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_BASE_URL = address;
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_connected = false;
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print("Connecting to " + apiUrl + " -> " + username + ":" + password);
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print("Connecting to ${apiUrl} -> ${username}:${password}");
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var response = await get("").timeout(Duration(seconds: 5)).catchError((error) {
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print("Error connecting to server: ${error.toString()}");
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if (error is SocketException) {
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errorMessage = "Could not connect to server";
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showServerError(context, "Connection Refused");
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return null;
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} else if (error is TimeoutException) {
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errorMessage = "Server timeout";
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showTimeoutDialog(context);
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return null;
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} else {
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// Unknown error type - re-throw the error and Sentry will catch it
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@ -242,8 +225,6 @@ class InvenTreeAPI {
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if (response == null) {
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// Null (or error) response: Show dialog and exit
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await showServerError(context, errorMessage);
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return false;
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}
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@ -322,6 +303,38 @@ class InvenTreeAPI {
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};
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}
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Future<bool> connectToServer(BuildContext context) async {
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print("InvenTreeAPI().connectToServer()");
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// Clear connection flag
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_connected = false;
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// Clear token
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_token = '';
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// Load selected profile
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profile = await UserProfileDBManager().getSelectedProfile();
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if (profile == null) {
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await showErrorDialog(
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context,
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"Select Profile",
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"User profile not selected"
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);
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return false;
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}
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_connecting = true;
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_connect(context).then((result) {
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print("_connect() returned result: ${result}");
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_connecting = false;
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return result;
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});
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}
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// Perform a PATCH request
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Future<http.Response> patch(String url, {Map<String, String> body}) async {
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var _url = makeApiUrl(url);
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@ -405,7 +418,9 @@ class InvenTreeAPI {
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Map<String, String> defaultHeaders() {
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var headers = Map<String, String>();
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headers[HttpHeaders.authorizationHeader] = _authorizationHeader(_profile.username, _profile.password);
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if (profile != null) {
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headers[HttpHeaders.authorizationHeader] = _authorizationHeader(profile.username, profile.password);
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}
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return headers;
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}
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@ -180,7 +180,7 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
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_reload();
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// Attempt server login (this will load the newly selected profile
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InvenTreeAPI().connect(context);
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InvenTreeAPI().connectToServer(context);
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}
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void _deleteProfile(UserProfile profile) async {
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@ -220,7 +220,7 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
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List<Widget> children = [];
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if (profiles.length > 0) {
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if (profiles != null && profiles.length > 0) {
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for (int idx = 0; idx < profiles.length; idx++) {
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UserProfile profile = profiles[idx];
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@ -44,109 +44,7 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
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// Selected user profile
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UserProfile _profile;
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void _loadProfile() async {
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final profile = await UserProfileDBManager().getSelectedProfile();
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print("Loaded selected profile");
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// If a different profile is selected, re-connect
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if (_profile == null || (_profile.key != profile.key)) {
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// TODO
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}
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_profile = profile;
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setState(() {
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});
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}
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ListTile _serverTile() {
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// No profile selected
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// Tap to select / create a profile
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if (_profile == null) {
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return ListTile(
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title: Text("No Profile Selected"),
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subtitle: Text("Tap to create or select a profile"),
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leading: FaIcon(FontAwesomeIcons.user),
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onTap: () {
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_selectProfile();
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},
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);
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}
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// Profile is selected ...
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if (InvenTreeAPI().isConnected()) {
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return ListTile(
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title: Text("Connected to ${_profile.server}"),
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);
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} else {
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return ListTile(
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title: Text("Could not connect to server"),
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subtitle: Text("Error connecting to ${_profile.server}"),
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leading: FaIcon(FontAwesomeIcons.times),
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onTap: () {
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_selectProfile();
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},
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);
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}
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}
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void onConnectSuccess(String msg) async {
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final profile = await UserProfileDBManager().getSelectedProfile();
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String address = profile?.server ?? 'unknown server address';
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_serverConnection = true;
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_serverMessage = msg;
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_serverStatus = "Connected to ${address}";
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_serverStatusColor = Color.fromARGB(255, 50, 250, 50);
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_serverIcon = new FaIcon(FontAwesomeIcons.checkCircle, color: _serverStatusColor);
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setState(() {});
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}
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void onConnectFailure(String msg) async {
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final profile = await UserProfileDBManager().getSelectedProfile();
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_serverConnection = false;
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_serverMessage = msg;
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_serverStatus = "Could not connect to ${profile?.server}";
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_serverStatusColor = Color.fromARGB(255, 250, 50, 50);
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_serverIcon = new FaIcon(FontAwesomeIcons.timesCircle, color: _serverStatusColor);
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setState(() {});
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}
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/*
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* Test the server connection
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*/
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void _checkServerConnection(BuildContext context) async {
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// Reset the connection status variables
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_serverStatus = "Connecting to server";
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_serverMessage = "";
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_serverConnection = false;
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_serverIcon = new FaIcon(FontAwesomeIcons.spinner);
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_serverStatusColor = Color.fromARGB(255, 50, 50, 250);
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InvenTreeAPI().connect(context).then((bool result) {
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if (result) {
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onConnectSuccess("");
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} else {
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onConnectFailure("Could not connect to server");
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}
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});
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// Update widget state
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setState(() {});
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}
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BuildContext _context;
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void _search() {
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if (!InvenTreeAPI().checkConnection(context)) return;
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@ -210,8 +108,130 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
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);
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}
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void _loadProfile() async {
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final profile = await UserProfileDBManager().getSelectedProfile();
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// If a different profile is selected, re-connect
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if (_profile == null || (_profile.key != profile.key)) {
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if (_context != null) {
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print("Connecting Profile: ${profile.name} - ${profile.server}");
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InvenTreeAPI().connectToServer(_context).then((result) {
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setState(() {
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});
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});
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setState(() {
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});
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}
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}
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_profile = profile;
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setState(() {
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});
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}
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ListTile _serverTile() {
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// No profile selected
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// Tap to select / create a profile
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if (_profile == null) {
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return ListTile(
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title: Text("No Profile Selected"),
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subtitle: Text("Tap to create or select a profile"),
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leading: FaIcon(FontAwesomeIcons.server),
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trailing: FaIcon(
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FontAwesomeIcons.user,
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color: Color.fromRGBO(250, 50, 50, 1),
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),
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onTap: () {
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_selectProfile();
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},
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);
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}
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// Profile is selected ...
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if (InvenTreeAPI().isConnecting()) {
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return ListTile(
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title: Text("Connecting to server..."),
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subtitle: Text("${InvenTreeAPI().baseUrl}"),
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leading: FaIcon(FontAwesomeIcons.server),
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trailing: FaIcon(
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FontAwesomeIcons.spinner,
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color: Color.fromRGBO(50, 50, 250, 1),
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)
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);
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} else if (InvenTreeAPI().isConnected()) {
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return ListTile(
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title: Text("Connected to server"),
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subtitle: Text("${InvenTreeAPI().baseUrl}"),
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leading: FaIcon(FontAwesomeIcons.server),
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trailing: FaIcon(
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FontAwesomeIcons.checkCircle,
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color: Color.fromRGBO(50, 250, 50, 1)
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),
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onTap: () {
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_selectProfile();
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},
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);
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} else {
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return ListTile(
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title: Text("Could not connect to server"),
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subtitle: Text("${_profile.server}"),
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leading: FaIcon(FontAwesomeIcons.server),
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trailing: FaIcon(
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FontAwesomeIcons.timesCircle,
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color: Color.fromRGBO(250, 50, 50, 1),
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),
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onTap: () {
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_selectProfile();
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},
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);
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}
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}
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void onConnectSuccess(String msg) async {
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final profile = await UserProfileDBManager().getSelectedProfile();
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String address = profile?.server ?? 'unknown server address';
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_serverConnection = true;
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_serverMessage = msg;
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_serverStatus = "Connected to ${address}";
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_serverStatusColor = Color.fromARGB(255, 50, 250, 50);
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_serverIcon = new FaIcon(FontAwesomeIcons.checkCircle, color: _serverStatusColor);
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setState(() {});
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}
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void onConnectFailure(String msg) async {
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final profile = await UserProfileDBManager().getSelectedProfile();
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_serverConnection = false;
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_serverMessage = msg;
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_serverStatus = "Could not connect to ${profile?.server}";
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_serverStatusColor = Color.fromARGB(255, 250, 50, 50);
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_serverIcon = new FaIcon(FontAwesomeIcons.timesCircle, color: _serverStatusColor);
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setState(() {});
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}
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@override
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Widget build(BuildContext context) {
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_context = context;
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_loadProfile();
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// This method is rerun every time setState is called, for instance as done
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// by the _incrementCounter method above.
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//
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@ -369,6 +389,7 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
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),
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Spacer(),
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*/
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Spacer(),
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Row(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.center,
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