location image search and population for new session

lib/daos/media_items_dao.dart

@@ -4,15 +4,21 @@ import 'package:sendtrain/database/database.dart';
 part 'media_items_dao.g.dart';
 
 @DriftAccessor(tables: [MediaItems])
-class MediaItemsDao extends DatabaseAccessor<AppDatabase> with _$MediaItemsDaoMixin {
+class MediaItemsDao extends DatabaseAccessor<AppDatabase>
+    with _$MediaItemsDaoMixin {
   MediaItemsDao(super.db);
 
+  Future createOrUpdate(MediaItemsCompanion mediaItem) =>
+      into(mediaItems).insertOnConflictUpdate(mediaItem);
+
   Future<List<MediaItem>> all() async {
     return await select(mediaItems).get();
   }
 
   Future<MediaItem> find(int id) async {
-    return await (select(mediaItems)..where((mediaItem) => mediaItem.id.equals(id) )).getSingle();
+    return await (select(mediaItems)
+          ..where((mediaItem) => mediaItem.id.equals(id)))
+        .getSingle();
   }
 
   Future<List<MediaItem>> fromActivity(Activity activity) async {
@@ -24,13 +30,11 @@ class MediaItemsDao extends DatabaseAccessor<AppDatabase> with _$MediaItemsDaoMi
         ),
       ],
     )
-      ..where(
-          db.objectMediaItems.objectType.equals(ObjectType.activities.name))
+      ..where(db.objectMediaItems.objectType.equals(ObjectType.activities.name))
       ..where(db.objectMediaItems.objectId.equals(activity.id));
 
-    final mediaItems = (await result.get())
-        .map((e) => e.readTable(db.mediaItems))
-        .toList();
+    final mediaItems =
+        (await result.get()).map((e) => e.readTable(db.mediaItems)).toList();
 
     return mediaItems;
   }
@@ -44,14 +48,31 @@ class MediaItemsDao extends DatabaseAccessor<AppDatabase> with _$MediaItemsDaoMi
         ),
       ],
     )
-      ..where(
-          db.objectMediaItems.objectType.equals(ObjectType.sessions.name))
+      ..where(db.objectMediaItems.objectType.equals(ObjectType.sessions.name))
       ..where(db.objectMediaItems.objectId.equals(session.id));
 
-    final mediaItems = (await result.get())
-        .map((e) => e.readTable(db.mediaItems))
-        .toList();
+    final mediaItems =
+        (await result.get()).map((e) => e.readTable(db.mediaItems)).toList();
 
     return mediaItems;
   }
+
+  Stream<List<MediaItem>> watchSessionMediaItems(int id) {
+    final query = select(db.objectMediaItems).join(
+      [
+        innerJoin(
+          db.mediaItems,
+          db.mediaItems.id.equalsExp(db.objectMediaItems.mediaId),
+        ),
+      ],
+    )
+      ..where(db.objectMediaItems.objectType.equals(ObjectType.sessions.name))
+      ..where(db.objectMediaItems.objectId.equals(id));
+
+    return query.watch().map((rows) {
+      final mediaItems = (rows).map((e) => e.readTable(db.mediaItems)).toList();
+
+      return mediaItems;
+    });
+  }
 }

lib/daos/object_media_items_dao.dart

@@ -0,0 +1,19 @@
+import 'package:drift/drift.dart';
+import 'package:sendtrain/database/database.dart';
+
+part 'object_media_items_dao.g.dart';
+
+@DriftAccessor(tables: [ObjectMediaItems])
+class ObjectMediaItemsDao extends DatabaseAccessor<AppDatabase> with _$ObjectMediaItemsDaoMixin {
+  ObjectMediaItemsDao(super.db);
+
+  Future createOrUpdate(ObjectMediaItemsCompanion objectMediaItem) => into(objectMediaItems).insertOnConflictUpdate(objectMediaItem);
+
+  Future<List<ObjectMediaItem>> all() async {
+    return await select(objectMediaItems).get();
+  }
+
+  Future<ObjectMediaItem> find(int id) async {
+    return await (select(objectMediaItems)..where((objectMediaItem) => objectMediaItem.id.equals(id) )).getSingle();
+  }
+}

lib/daos/object_media_items_dao.g.dart

@@ -0,0 +1,10 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'object_media_items_dao.dart';
+
+// ignore_for_file: type=lint
+mixin _$ObjectMediaItemsDaoMixin on DatabaseAccessor<AppDatabase> {
+  $MediaItemsTable get mediaItems => attachedDatabase.mediaItems;
+  $ObjectMediaItemsTable get objectMediaItems =>
+      attachedDatabase.objectMediaItems;
+}

lib/database/database.dart

@@ -4,6 +4,7 @@ import 'package:sendtrain/daos/actions_dao.dart';
 import 'package:sendtrain/daos/activities_dao.dart';
 import 'package:sendtrain/daos/activity_actions_dao.dart';
 import 'package:sendtrain/daos/media_items_dao.dart';
+import 'package:sendtrain/daos/object_media_items_dao.dart';
 import 'package:sendtrain/daos/session_activities_dao.dart';
 import 'package:sendtrain/daos/sessions_dao.dart';
 import 'package:sendtrain/database/seed.dart';
@@ -22,6 +23,7 @@ part 'database.g.dart';
   SessionsDao,
   ActivitiesDao,
   MediaItemsDao,
+  ObjectMediaItemsDao,
   SessionActivitiesDao,
   ActivityActionsDao,
   ActionsDao

lib/database/database.g.dart

@@ -2398,14 +2398,6 @@ abstract class _$AppDatabase extends GeneratedDatabase {
   late final $MediaItemsTable mediaItems = $MediaItemsTable(this);
   late final $ObjectMediaItemsTable objectMediaItems =
       $ObjectMediaItemsTable(this);
-  late final SessionsDao sessionsDao = SessionsDao(this as AppDatabase);
-  late final ActivitiesDao activitiesDao = ActivitiesDao(this as AppDatabase);
-  late final MediaItemsDao mediaItemsDao = MediaItemsDao(this as AppDatabase);
-  late final SessionActivitiesDao sessionActivitiesDao =
-      SessionActivitiesDao(this as AppDatabase);
-  late final ActivityActionsDao activityActionsDao =
-      ActivityActionsDao(this as AppDatabase);
-  late final ActionsDao actionsDao = ActionsDao(this as AppDatabase);
   @override
   Iterable<TableInfo<Table, Object?>> get allTables =>
       allSchemaEntities.whereType<TableInfo<Table, Object?>>();

lib/services/apis/google_places_service.dart

@@ -0,0 +1,99 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:http/http.dart';
+import 'package:uuid/uuid.dart';
+
+class GooglePlacesService {
+  final sessionToken = Uuid().v4();
+  final apiKey = "AIzaSyBCjMCEAyyNVpsnVYvZj6VL1mmB98Vd6AE";
+  final client = Client();
+
+  void finish() {
+    client.close();
+  }
+
+  Future<List<Suggestion>?> fetchSuggestions(String input, String lang) async {
+    var headers = {
+      'Content-Type': 'application/json',
+      'X-Goog-Api-Key': apiKey,
+      "Access-Control-Allow-Origin": "*",
+      'X-Goog-FieldMask':
+          'places.displayName,places.id,places.formattedAddress,places.photos'
+    };
+    var request = Request('POST',
+        Uri.parse('https://places.googleapis.com/v1/places:searchText'));
+    request.body = json.encode({"textQuery": input});
+    request.headers.addAll(headers);
+
+    StreamedResponse response = await request.send();
+
+    if (response.statusCode == 200) {
+      final result = json.decode(await response.stream.bytesToString());
+
+      if (result.isNotEmpty) {
+        return result['places']
+            .map<Suggestion>((p) => Suggestion(
+                placeId: p['id'],
+                description: p['displayName']['text'],
+                address: p['formattedAddress'],
+                imageReferences: p['photos']))
+            .toList();
+      } else {
+        return null;
+      }
+    } else {
+      throw Exception(response.reasonPhrase);
+    }
+  }
+
+  Future fetchPhoto(String name) async {
+    var headers = {
+      "Access-Control-Allow-Origin": "*",
+    };
+
+    var request = Request('GET',
+      Uri.parse('https://places.googleapis.com/v1/$name/media?key=$apiKey&maxWidthPx=800&skipHttpRedirect=true')
+    );
+    request.headers.addAll(headers);
+
+    StreamedResponse response = await request.send();
+
+    if (response.statusCode == 200) {
+      final result = json.decode(await response.stream.bytesToString());
+
+      if (result.isNotEmpty) {
+        return result;
+      } else {
+        return null;
+      }
+    } else {
+      throw Exception(response.reasonPhrase);
+    }
+  }
+}
+
+class Suggestion {
+  final String placeId;
+  final String description;
+  final String address;
+  final List<dynamic>? imageReferences;
+
+  Suggestion(
+      {required this.placeId,
+      required this.description,
+      required this.address,
+      this.imageReferences});
+
+  @override
+  String toString() {
+    return 'Suggestion(description: $description, placeId: $placeId)';
+  }
+
+  Map toJson() => {
+        'placeId': placeId,
+        'name': description,
+        'address': address,
+        'imageReferences': imageReferences
+      };
+}

lib/services/functional/debouncer.dart

@@ -0,0 +1,68 @@
+import 'dart:async';
+
+typedef _Debounceable<S, T> = Future<S?> Function(T parameter);
+
+class Debouncer {
+  Debouncer(this._duration, this._callback);
+
+  final Duration _duration;
+  final dynamic _callback;
+  late final _Debounceable<dynamic, String> _debouncedSearch = _debounce<dynamic, String>(_callback);
+
+  /// Returns a new function that is a debounced version of the given function.
+  ///
+  /// This means that the original function will be called only after no calls
+  /// have been made for the given Duration.
+  _Debounceable<S, T> _debounce<S, T>(_Debounceable<S?, T> function) {
+    _DebounceTimer? debounceTimer;
+
+    return (T parameter) async {
+      if (debounceTimer != null && !debounceTimer!.isCompleted) {
+        debounceTimer!.cancel();
+      }
+      debounceTimer = _DebounceTimer(_duration);
+      try {
+        await debounceTimer!.future;
+      } on _CancelException {
+        return null;
+      }
+      return function(parameter);
+    };
+  }
+
+  process(data) {
+    return _debouncedSearch(data);
+  }
+}
+
+// A wrapper around Timer used for debouncing.
+class _DebounceTimer {
+  final Duration debounceDuration;
+
+  _DebounceTimer(
+    this.debounceDuration
+  ) {
+    _timer = Timer(debounceDuration, _onComplete);
+  }
+
+  late final Timer _timer;
+  final Completer<void> _completer = Completer<void>();
+
+  void _onComplete() {
+    _completer.complete();
+  }
+
+  Future<void> get future => _completer.future;
+
+  bool get isCompleted => _completer.isCompleted;
+
+  void cancel() {
+    _timer.cancel();
+    _completer.completeError(const _CancelException());
+  }
+}
+
+// An exception indicating that the timer was canceled.
+class _CancelException implements Exception {
+  const _CancelException();
+}

lib/widgets/generic/elements/form_search_input.dart

@@ -1,34 +1,17 @@
 import 'dart:async';
-import 'dart:convert';
+import 'dart:math';
 
 import 'package:flutter/material.dart';
-import 'package:http/http.dart';
+import 'package:sendtrain/services/apis/google_places_service.dart';
+import 'package:sendtrain/services/functional/debouncer.dart';
 import 'package:sendtrain/widgets/generic/elements/form_text_input.dart';
-import 'package:uuid/uuid.dart';
-
-class Suggestion {
-  final String placeId;
-  final String description;
-  final String address;
-
-  Suggestion(this.placeId, this.description, this.address);
-
-  @override
-  String toString() {
-    return 'Suggestion(description: $description, placeId: $placeId)';
-  }
-
-  Map toJson() => {
-        'placeId': placeId,
-        'name': description,
-        'address': address,
-      };
-}
 
 class FormSearchInput extends StatefulWidget {
-  const FormSearchInput({super.key, required this.sessionController});
+  const FormSearchInput(
+      {super.key, required this.sessionController, this.optionalPayload});
 
   final TextEditingController sessionController;
+  final dynamic optionalPayload;
 
   @override
   State<FormSearchInput> createState() => _FormSearchInputState();
@@ -37,21 +20,22 @@ class FormSearchInput extends StatefulWidget {
 class _FormSearchInputState extends State<FormSearchInput> {
   String? _currentQuery;
 
+  final service = GooglePlacesService();
+
   // The most recent suggestions received from the API.
   late Iterable<Widget> _lastOptions = <Widget>[];
-
-  late final _Debounceable<Iterable<String>?, String> _debouncedSearch;
+  late final Debouncer debouncer;
 
   // Calls the "remote" API to search with the given query. Returns null when
   // the call has been made obsolete.
-  Future<Iterable<String>?> _search(String query) async {
+  Future<Iterable<Suggestion>?> _search(String query) async {
     _currentQuery = query;
 
     // In a real application, there should be some error handling here.
     // final Iterable<String> options = await _FakeAPI.search(_currentQuery!);
     if (query.isNotEmpty) {
       final List<Suggestion>? suggestions =
-          await fetchSuggestions(_currentQuery!, 'en');
+          await service.fetchSuggestions(_currentQuery!, 'en');
 
       // If another search happened after this one, throw away these options.
       if (_currentQuery != query) {
@@ -59,50 +43,16 @@ class _FormSearchInputState extends State<FormSearchInput> {
       }
       _currentQuery = null;
 
-      return suggestions?.map((suggestion) => json.encode(suggestion));
+      return suggestions?.map((suggestion) => suggestion);
     } else {
       return null;
     }
   }
 
-  final sessionToken = Uuid().v4();
-  final apiKey = "AIzaSyBCjMCEAyyNVpsnVYvZj6VL1mmB98Vd6AE";
-  final client = Client();
-
-  Future<List<Suggestion>?> fetchSuggestions(String input, String lang) async {
-    var headers = {
-      'Content-Type': 'application/json',
-      'X-Goog-Api-Key': apiKey,
-      "Access-Control-Allow-Origin": "*",
-      'X-Goog-FieldMask': 'places.displayName,places.id,places.formattedAddress'
-    };
-    var request = Request('POST',
-        Uri.parse('https://places.googleapis.com/v1/places:searchText'));
-    request.body = json.encode({"textQuery": input});
-    request.headers.addAll(headers);
-
-    StreamedResponse response = await request.send();
-
-    if (response.statusCode == 200) {
-      final result = json.decode(await response.stream.bytesToString());
-
-      if (result.isNotEmpty) {
-        return result['places']
-            .map<Suggestion>((p) => Suggestion(
-                p['id'], p['displayName']['text'], p['formattedAddress']))
-            .toList();
-      } else {
-        return null;
-      }
-    } else {
-      throw Exception(response.reasonPhrase);
-    }
-  }
-
   @override
   void initState() {
     super.initState();
-    _debouncedSearch = _debounce<Iterable<String>?, String>(_search);
+    debouncer = Debouncer(Duration(milliseconds: 50), _search);
   }
 
   @override
@@ -114,28 +64,37 @@ class _FormSearchInputState extends State<FormSearchInput> {
           title: 'Location (optional)',
           icon: Icon(Icons.search_rounded),
           maxLines: 2,
+          requiresValidation: false,
           onTap: () {
             controller.openView();
           });
     }, suggestionsBuilder:
             (BuildContext context, SearchController controller) async {
-      final List<String>? options =
-          (await _debouncedSearch(controller.text))?.toList();
+      final List<Suggestion>? options =
+          (await debouncer.process(controller.text))?.toList();
       if (options == null) {
         return _lastOptions;
       }
       _lastOptions = List<ListTile>.generate(options.length, (int index) {
-        final String item = options[index];
+        final Suggestion item = options[index];
         return ListTile(
-          title: Text(json.decode(item)['name']),
-          onTap: () {
-            if (item.isNotEmpty) {
-              widget.sessionController.text = json.decode(item)['name'];
+          title: Text(item.description),
+          onTap: () async {
+            // widget.optionalPayload = service.fetchPhoto(json.decode(item.image));
+            if (item.imageReferences != null) {
+              // get a random photo item from the returned result
+              Map<String, dynamic> photo = item.imageReferences![
+                  Random().nextInt(item.imageReferences!.length)];
+
+              await service.fetchPhoto(photo['name']).then((photoMap) {
+                widget.optionalPayload.photoUri = photoMap['photoUri'];
+              });
             }
-            client.close();
-            controller.closeView(item);
-            // debugPrint('You just selected $item');
-            // Navigator.of(context).pop();
+
+            widget.optionalPayload.address = item.address;
+            widget.sessionController.text = item.description;
+            service.finish();
+            controller.closeView(item.description);
           },
         );
       });
@@ -144,55 +103,3 @@ class _FormSearchInputState extends State<FormSearchInput> {
     });
   }
 }
-
-const Duration debounceDuration = Duration(milliseconds: 500);
-typedef _Debounceable<S, T> = Future<S?> Function(T parameter);
-
-/// Returns a new function that is a debounced version of the given function.
-///
-/// This means that the original function will be called only after no calls
-/// have been made for the given Duration.
-_Debounceable<S, T> _debounce<S, T>(_Debounceable<S?, T> function) {
-  _DebounceTimer? debounceTimer;
-
-  return (T parameter) async {
-    if (debounceTimer != null && !debounceTimer!.isCompleted) {
-      debounceTimer!.cancel();
-    }
-    debounceTimer = _DebounceTimer();
-    try {
-      await debounceTimer!.future;
-    } on _CancelException {
-      return null;
-    }
-    return function(parameter);
-  };
-}
-
-// A wrapper around Timer used for debouncing.
-class _DebounceTimer {
-  _DebounceTimer() {
-    _timer = Timer(debounceDuration, _onComplete);
-  }
-
-  late final Timer _timer;
-  final Completer<void> _completer = Completer<void>();
-
-  void _onComplete() {
-    _completer.complete();
-  }
-
-  Future<void> get future => _completer.future;
-
-  bool get isCompleted => _completer.isCompleted;
-
-  void cancel() {
-    _timer.cancel();
-    _completer.completeError(const _CancelException());
-  }
-}
-
-// An exception indicating that the timer was canceled.
-class _CancelException implements Exception {
-  const _CancelException();
-}

lib/widgets/generic/elements/form_text_input.dart

@@ -8,7 +8,8 @@ class FormTextInput extends StatelessWidget {
       this.icon,
       this.maxLines,
       this.minLines,
-      this.onTap});
+      this.onTap,
+      this.requiresValidation=true});
 
   final TextEditingController controller;
   final String title;
@@ -16,6 +17,7 @@ class FormTextInput extends StatelessWidget {
   final int? minLines;
   final Icon? icon;
   final dynamic onTap;
+  final bool requiresValidation;
 
   @override
   Widget build(BuildContext context) {
@@ -34,12 +36,14 @@ class FormTextInput extends StatelessWidget {
               labelText: title,
             ),
             validator: (String? value) {
-              if (value == null || value.isEmpty) {
-                return 'Please enter some text';
-              }
+              if (requiresValidation == true) {
+                if (value == null || value.isEmpty) {
+                  return 'Please enter some text';
+                }
 
-              if (value.length < 3) {
-                return 'Please enter a minimum of 3 characters';
+                if (value.length < 3) {
+                  return 'Please enter a minimum of 3 characters';
+                }
               }
               return null;
             },

lib/widgets/sessions/session_card.dart

@@ -24,9 +24,9 @@ class _SessionCardState extends State<SessionCard> {
 
     initializeDateFormatting('en');
 
-    return FutureBuilder<List<MediaItem>>(
-        future: MediaItemsDao(Provider.of<AppDatabase>(context))
-            .fromSession(session),
+    return StreamBuilder<List<MediaItem>>(
+        stream: MediaItemsDao(Provider.of<AppDatabase>(context))
+            .watchSessionMediaItems(session.id),
         builder: (context, snapshot) {
           if (snapshot.hasData) {
             List<MediaItem> mediaItems = snapshot.data!;

lib/widgets/sessions/session_creator.dart

@@ -1,9 +1,12 @@
 import 'dart:async';
+import 'dart:math';
 
 import 'package:drift/drift.dart' hide Column;
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import 'package:provider/provider.dart';
+import 'package:sendtrain/daos/media_items_dao.dart';
+import 'package:sendtrain/daos/object_media_items_dao.dart';
 import 'package:sendtrain/daos/sessions_dao.dart';
 import 'package:sendtrain/database/database.dart';
 import 'package:sendtrain/widgets/builders/dialogs.dart';
@@ -21,6 +24,12 @@ class SessionCreator extends StatefulWidget {
   State<SessionCreator> createState() => _SessionCreatorState();
 }
 
+// used to pass the result of the found image back to current context...
+class SessionPayload {
+  String? photoUri;
+  String? address;
+}
+
 class _SessionCreatorState extends State<SessionCreator> {
   final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
 
@@ -33,14 +42,48 @@ class _SessionCreatorState extends State<SessionCreator> {
     'media': TextEditingController(),
   };
 
-  Future createSession(context) {
-    return SessionsDao(Provider.of<AppDatabase>(context, listen: false))
-        .createOrUpdate(SessionsCompanion(
-            title: Value(sessionCreateController['name']!.text),
-            content: Value(sessionCreateController['content']!.text),
-            status: Value(SessionStatus.pending),
-            date: Value(DateTime.parse(sessionCreateController['date']!.text)),
-            address: Value(sessionCreateController['address']!.text)));
+  final SessionPayload sessionPayload = SessionPayload();
+
+  Future createSession(context) async {
+    Map<Symbol, Value> payload = {
+      Symbol('title'): Value<String>(sessionCreateController['name']!.text),
+      Symbol('content'):
+          Value<String>(sessionCreateController['content']!.text),
+      Symbol('status'): Value<SessionStatus>(SessionStatus.pending),
+      Symbol('date'): Value<DateTime>(
+          DateTime.parse(sessionCreateController['date']!.text)),
+    };
+
+    // optional params
+    if (sessionCreateController['address']!.text.isNotEmpty) {
+      payload[Symbol('address')] =
+          Value<String>(sessionCreateController['address']!.text);
+    }
+
+    return await SessionsDao(Provider.of<AppDatabase>(context, listen: false))
+        .createOrUpdate(Function.apply(SessionsCompanion.new, [], payload));
+  }
+
+  Future createSessionMedia(context, sessionId) async {
+    if (sessionPayload.photoUri != null) {
+      MediaItemsCompanion mediaItem = MediaItemsCompanion(
+          title: Value('Location Image'),
+          description: Value(sessionPayload.address!),
+          reference: Value(sessionPayload.photoUri!),
+          type: Value(MediaType.image));
+
+      return await MediaItemsDao(
+              Provider.of<AppDatabase>(context, listen: false))
+          .createOrUpdate(mediaItem).then((id) async {
+            ObjectMediaItemsCompanion omi = ObjectMediaItemsCompanion(
+              objectId: Value(sessionId),
+              objectType: Value(ObjectType.sessions),
+              mediaId: Value(id),
+            );
+
+            await ObjectMediaItemsDao(Provider.of<AppDatabase>(context, listen: false)).createOrUpdate(omi);
+          });
+    }
   }
 
   @override
@@ -113,19 +156,23 @@ class _SessionCreatorState extends State<SessionCreator> {
                 //           }
                 //         })),
                 FormSearchInput(
-                    sessionController: sessionCreateController['address']!),
+                    sessionController: sessionCreateController['address']!,
+                    optionalPayload: sessionPayload),
                 Row(mainAxisAlignment: MainAxisAlignment.end, children: [
                   Padding(
                       padding: EdgeInsets.only(top: 10),
                       child: FilledButton(
-                          onPressed: () => {
+                          onPressed: () async => {
                                 if (_formKey.currentState!.validate())
                                   {
-                                    createSession(_formKey.currentContext)
-                                        .then((id) => {
+                                    await createSession(_formKey.currentContext)
+                                        .then((id) async => {
+                                              await createSessionMedia(
+                                                  _formKey.currentContext, id),
                                               SessionsDao(db).find(id).then(
                                                   (session) => showGenericDialog(
-                                                      SessionView(session: session),
+                                                      SessionView(
+                                                          session: session),
                                                       _formKey
                                                           .currentContext!)),
                                               Navigator.pop(