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perf(search): Cache building list at startup to speed up search #82

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198f4c2
Download building list at startup instead of every search
SiddhantBhirud Mar 30, 2026
ae070a3
perf(widget): Cache building list at startup instead of fetching on e…
SiddhantBhirud Mar 30, 2026
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12 changes: 6 additions & 6 deletions ios/Runner.xcodeproj/project.pbxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -495,7 +495,7 @@
CLANG_ENABLE_MODULES = YES;
CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
CURRENT_PROJECT_VERSION = 5;
DEVELOPMENT_TEAM = 4LLPM7NY5C;
DEVELOPMENT_TEAM = TY8BMZ5C7D;
ENABLE_BITCODE = NO;
INFOPLIST_FILE = Runner/Info.plist;
INFOPLIST_KEY_CFBundleDisplayName = MaizeBus;
Expand All @@ -506,7 +506,7 @@
"@executable_path/Frameworks",
);
MARKETING_VERSION = 2.0.0;
PRODUCT_BUNDLE_IDENTIFIER = com.ishankumar.maizebus;
PRODUCT_BUNDLE_IDENTIFIER = com.siddhant.maizebus;
PRODUCT_NAME = "$(TARGET_NAME)";
SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
SUPPORTS_MACCATALYST = NO;
Expand Down Expand Up @@ -691,7 +691,7 @@
CLANG_ENABLE_MODULES = YES;
CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
CURRENT_PROJECT_VERSION = 5;
DEVELOPMENT_TEAM = 4LLPM7NY5C;
DEVELOPMENT_TEAM = TY8BMZ5C7D;
ENABLE_BITCODE = NO;
INFOPLIST_FILE = Runner/Info.plist;
INFOPLIST_KEY_CFBundleDisplayName = MaizeBus;
Expand All @@ -702,7 +702,7 @@
"@executable_path/Frameworks",
);
MARKETING_VERSION = 2.0.0;
PRODUCT_BUNDLE_IDENTIFIER = com.ishankumar.maizebus;
PRODUCT_BUNDLE_IDENTIFIER = com.siddhant.maizebus;
PRODUCT_NAME = "$(TARGET_NAME)";
SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
SUPPORTS_MACCATALYST = NO;
Expand All @@ -724,7 +724,7 @@
CLANG_ENABLE_MODULES = YES;
CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
CURRENT_PROJECT_VERSION = 5;
DEVELOPMENT_TEAM = 4LLPM7NY5C;
DEVELOPMENT_TEAM = TY8BMZ5C7D;
ENABLE_BITCODE = NO;
INFOPLIST_FILE = Runner/Info.plist;
INFOPLIST_KEY_CFBundleDisplayName = MaizeBus;
Expand All @@ -735,7 +735,7 @@
"@executable_path/Frameworks",
);
MARKETING_VERSION = 2.0.0;
PRODUCT_BUNDLE_IDENTIFIER = com.ishankumar.maizebus;
PRODUCT_BUNDLE_IDENTIFIER = com.siddhant.maizebus;
PRODUCT_NAME = "$(TARGET_NAME)";
SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
SUPPORTS_MACCATALYST = NO;
Expand Down
5 changes: 1 addition & 4 deletions ios/Runner/Runner.entitlements
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Original file line number Diff line number Diff line change
@@ -1,8 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>aps-environment</key>
<string>development</string>
</dict>
<dict/>
</plist>
1 change: 1 addition & 0 deletions lib/globals.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ import 'constants.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

List<Location> globalStopLocs = [];
List<Location> globalBuildingLocs = [];

// the global app padding
// don't modify these here, instead use the helper function in map_screen.dart that sets these based on phone type and safe area insets
Expand Down
24 changes: 24 additions & 0 deletions lib/screens/map_screen.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -313,11 +313,13 @@ class _MaizeBusCoreState extends State<MaizeBusCore> {
// LOADS BOTH STOP TYPES
final uriStops = Uri.parse(BACKEND_URL + '/getAllStops');
final uriRideStops = Uri.parse(BACKEND_URL + '/getAllRideStops');
final uriBuildings = Uri.parse(BACKEND_URL + '/getBuildingLocations');

// Calling in parallel
final responses = await Future.wait([
http.get(uriStops),
http.get(uriRideStops),
http.get(uriBuildings),
]);

// Helper function to parse a response into a List<Location>
Expand Down Expand Up @@ -356,6 +358,28 @@ class _MaizeBusCoreState extends State<MaizeBusCore> {
...parseLocations(responses[1]),
];

final buildingResponse = responses[2];
if (buildingResponse.statusCode == 200 &&
buildingResponse.body.trim().isNotEmpty &&
buildingResponse.body.trim() != '{}') {
final buildingLocations =
jsonDecode(buildingResponse.body) as List<dynamic>;
globalBuildingLocs = buildingLocations.map((building) {
final name = building['buildingName'] as String;
final abbrev = building['abbrev'] as String?;
final altName = building['altName'] as String?;
final lat = building['lat'] as double;
final long = building['long'] as double;
return Location(
name,
(abbrev != null) ? abbrev : "",
[if (abbrev != null) abbrev, if (altName != null) altName],
false,
latlng: LatLng(lat, long),
);
}).toList();
}

globalStopLocs = stopLocs;
}

Expand Down
114 changes: 15 additions & 99 deletions lib/widgets/search_sheet_main.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -35,97 +35,11 @@ class LocationSearchBar extends HookWidget {
}, [focusNode]);
final searchQuery = useState('');

final refreshKey = useState(0);

// Parse Buildings
final locations = useMemoized(() async {
try {
final buildingResponse = await http.get(
Uri.parse(BACKEND_URL + '/getBuildingLocations'),
);
List<Location> buildingLocs = [];
if (buildingResponse.statusCode == 200 &&
buildingResponse.body.trim().isNotEmpty &&
buildingResponse.body.trim() != '{}') {
final buildingLocations =
jsonDecode(buildingResponse.body) as List<dynamic>;
buildingLocs = buildingLocations.map((building) {
final name = building['buildingName'] as String;
final abbrev = building['abbrev'] as String?;
final altName = building['altName'] as String?;
final lat = building['lat'] as double;
final long = building['long'] as double;
return Location(
name,
(abbrev != null) ? abbrev : "",
[if (abbrev != null) abbrev, if (altName != null) altName],
false,
latlng: LatLng(lat, long),
);
}).toList();
}

// TODO: this code is DUPLICATED. We need to refactor to avoid duplication.
// LOADS BOTH STOP TYPES
final uriStops = Uri.parse(BACKEND_URL + '/getAllStops');
final uriRideStops = Uri.parse(BACKEND_URL + '/getAllRideStops');

// Calling in parallel
final responses = await Future.wait([
http.get(uriStops),
http.get(uriRideStops),
]);

// Helper function to parse a response into a List<Location>
// This prevents copying/pasting the parsing logic.
List<Location> parseLocations(http.Response response) {
if (response.statusCode == 200 &&
response.body.trim().isNotEmpty &&
response.body.trim() != '{}') {

final stopList = jsonDecode(response.body) as List<dynamic>;

return stopList.map((stop) {
final name = stop['name'] as String;
final aliases = [
name.split(' ').map((w) => w.isNotEmpty ? w[0] : '').join(),
];
final stopId = stop['stpid'] as String?;
final lat = stop['lat'] as double?;
final lon = stop['lon'] as double?;

return Location(
name,
(stopId != null) ? stopId : "",
aliases,
true,
stopId: stopId,
latlng: (lat != null && lon != null) ? LatLng(lat, lon) : null,
);
}).toList();
}
return []; // Return empty list if call failed or body is empty
}

// parse both and merge
List<Location> stopLocs = [
...parseLocations(responses[0]),
...parseLocations(responses[1]),
];

globalStopLocs = stopLocs;

final allLocs = [...buildingLocs, ...stopLocs];
if (allLocs.isEmpty) {
refreshKey.value++;
}

return allLocs;
} catch (e) {
print('Failed to fetch locations: $e');
refreshKey.value++;
return <Location>[];
}
}, [refreshKey.value]);
final allLocs = [...globalBuildingLocs, ...globalStopLocs];
return allLocs;
}, []);

Map<String, Set<Location>> buildNgramIndex(
List<Location> locations, {
Expand Down Expand Up @@ -207,15 +121,13 @@ class LocationSearchBar extends HookWidget {
SizedBox(
height: 50,
child: DecoratedBox(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(56),
),
decoration: BoxDecoration(borderRadius: BorderRadius.circular(56)),
child: TextField(
textAlignVertical: TextAlignVertical.center,
textInputAction: TextInputAction.go,
style: TextStyle(
style: TextStyle(
color: getColor(context, ColorType.opposite).withAlpha(204),
fontSize: 22
fontSize: 22,
),
autofocus: true,
controller: controller,
Expand Down Expand Up @@ -312,12 +224,16 @@ class LocationSearchBar extends HookWidget {
? Icon(
Icons.hail,
size: 40,
color: isDarkMode(context) ? Color.fromARGB(150, 255, 255, 255) : Color.fromARGB(150, 0, 0, 0),
color: isDarkMode(context)
? Color.fromARGB(150, 255, 255, 255)
: Color.fromARGB(150, 0, 0, 0),
)
: Icon(
Icons.business_rounded,
size: 40,
color: isDarkMode(context) ? Color.fromARGB(150, 255, 255, 255) : Color.fromARGB(150, 0, 0, 0),
color: isDarkMode(context)
? Color.fromARGB(150, 255, 255, 255)
: Color.fromARGB(150, 0, 0, 0),
),
onTap: () {
controller.text = loc.name;
Expand Down Expand Up @@ -372,7 +288,7 @@ class _SearchSheetState extends State<SearchSheet> {
topLeft: Radius.circular(30),
topRight: Radius.circular(30),
),
boxShadow: [SheetBoxShadow]
boxShadow: [SheetBoxShadow],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
Expand Down Expand Up @@ -421,7 +337,7 @@ class _SearchSheetState extends State<SearchSheet> {
color: getColor(context, ColorType.inputText),
),
),

enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.all(Radius.circular(56.0)),
borderSide: BorderSide(color: Colors.transparent, width: 0),
Expand Down