ADD: Measurement Records

main.py

@@ -4,12 +4,14 @@ from typing import List
 
 from fastapi import FastAPI, Depends, Query
 from enum import Enum
+
+from requests import session
 from sqlmodel import Session
 from fastapi.middleware.cors import CORSMiddleware
 
 from db import get_session
 from models.measurement import IndoorMeasurementCreateRequest, MeasurementListResponse, OutdoorMeasurementCreateRequest, \
-    MeasurementResolution
+    MeasurementResolution, RecordResponse
 from models.station import StationCreateRequest, StationCreateResponse, Station, StationListResponse, \
     StationUpdateResponse, StationUpdateRequest
 from services import stationService, measurementService
@@ -59,3 +61,7 @@ async def get_measurements(
         limit: int | None = None,
         session: Session = Depends(get_session)):
     return measurementService.get_measurements(session, station_ids, indoor, from_timestamp, to_timestamp, limit, resolution)
+
+@app.get('/measurements/records', response_model=RecordResponse, status_code=200)
+async def get_records(station_ids: list[int] | None = Query(default=None), from_timestamp: datetime | None = None, session: Session = Depends(get_session)):
+    return RecordResponse.model_validate(measurementService.get_measurement_records(session, station_ids, from_timestamp))

models/measurement.py

@@ -58,4 +58,21 @@ class StationMeasurementResponse(SQLModel):
     indoor: bool
 
 class MeasurementListResponse(SQLModel):
-    stations: list[StationMeasurementResponse]
+    stations: list[StationMeasurementResponse]
+
+class MeasurementRecordItem(SQLModel):
+    recordValue: float
+    timestamp: datetime
+    station: StationListResponse
+
+class MeasurementRecord(SQLModel):
+    min_value: MeasurementRecordItem
+    max_value: MeasurementRecordItem
+
+class RecordResponse(SQLModel):
+    inner_temperature_record: MeasurementRecord
+    outer_temperature_record: MeasurementRecord
+    inner_humidity_record: MeasurementRecord
+    outer_humidity_record: MeasurementRecord
+    pressure_record: MeasurementRecord
+    night_temperature_record: MeasurementRecord

services/measurementService.py

@@ -1,10 +1,11 @@
 from datetime import datetime
 
-from sqlalchemy import func
+from sqlalchemy import func, Select, Integer
 from sqlmodel import Session, select
 
 from models.measurement import IndoorMeasurement, IndoorMeasurementCreateRequest, OutdoorMeasurementCreateRequest, \
-    OutdoorMeasurement, MeasurementListResponse, StationMeasurementResponse, MeasurementResponse, MeasurementResolution
+    OutdoorMeasurement, MeasurementListResponse, StationMeasurementResponse, MeasurementResponse, MeasurementResolution, \
+    MeasurementRecord, RecordResponse, MeasurementRecordItem
 from models.station import Station, StationCreateRequest, StationListResponse
 from services import stationService
 from coolname import generate_slug
@@ -48,7 +49,7 @@ def push_outdoor_measurement(session: Session, raw_measurement: OutdoorMeasureme
 
     session.add(OutdoorMeasurement.model_validate(measurement))
     session.commit()
-from typing import Type, Union
+from typing import Type, Union, List
 
 
 def period_format(resolution: MeasurementResolution) -> str:
@@ -208,4 +209,92 @@ def get_measurements(session: Session, station_ids: list[int] | None, indoor: bo
                 stations=[
                     *[StationMeasurementResponse(station=outdoor_result.station, measurements=outdoor_result.measurements, indoor=False) for outdoor_result in outdoor_results],
                 ]
-            )
+            )
+
+def get_measurement_record(
+    session: Session,
+    model: Type[IndoorMeasurement | OutdoorMeasurement],
+    field: str,
+    station_ids: list[int] | None,
+    from_timestamp: datetime | None,
+    order: str,
+    night_only: bool = False,
+) -> MeasurementRecordItem | None:
+    column = getattr(model, field)
+    statement = select(model)
+
+    if station_ids is not None:
+        statement = statement.where(model.station_id.in_(station_ids))
+
+    if from_timestamp is not None:
+        to_timestamp = datetime.now()
+        statement = statement.where(model.timestamp >= from_timestamp)
+        statement = statement.where(model.timestamp <= to_timestamp)
+
+    if night_only:
+        hour = func.cast(func.strftime("%H", model.timestamp), Integer)
+        statement = statement.where((hour >= 22) | (hour < 6))
+
+    statement = statement.where(column.is_not(None))
+    statement = statement.order_by(column.desc() if order == 'max' else column.asc())
+    statement = statement.limit(1)
+
+    result = session.exec(statement).first()
+    if result is None:
+        return None
+
+    station = session.get(Station, result.station_id)
+    return MeasurementRecordItem(
+        recordValue=getattr(result, field),
+        timestamp=result.timestamp,
+        station=StationListResponse.model_validate(station),
+    )
+
+def get_inner_temperature_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None, order: str) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, IndoorMeasurement, "temperature", station_ids, from_timestamp, order)
+
+def get_outer_temperature_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None, order: str) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, OutdoorMeasurement, "temperature", station_ids, from_timestamp, order)
+
+def get_inner_humidity_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None, order: str) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, IndoorMeasurement, "humidity", station_ids, from_timestamp, order)
+
+def get_outer_humidity_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None, order: str) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, OutdoorMeasurement, "humidity", station_ids, from_timestamp, order)
+
+def get_pressure_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None, order: str) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, OutdoorMeasurement, "pressure", station_ids, from_timestamp, order)
+
+def get_warmest_night_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, OutdoorMeasurement, "temperature", station_ids, from_timestamp, "max", night_only=True)
+
+def get_coldest_night_record(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None) -> MeasurementRecordItem | None:
+    return get_measurement_record(session, OutdoorMeasurement, "temperature", station_ids, from_timestamp, "min", night_only=True)
+
+def get_measurement_records(session: Session, station_ids: list[int] | None, from_timestamp: datetime | None):
+    return RecordResponse(
+        inner_temperature_record = MeasurementRecord(
+            max_value=get_inner_temperature_record(session, station_ids, from_timestamp, order='max'),
+            min_value=get_inner_temperature_record(session, station_ids, from_timestamp, order='min')
+        ),
+        outer_temperature_record = MeasurementRecord(
+            max_value=get_outer_temperature_record(session, station_ids, from_timestamp, order='max'),
+            min_value=get_outer_temperature_record(session, station_ids, from_timestamp, order='min')
+        ),
+        inner_humidity_record = MeasurementRecord(
+            max_value=get_inner_humidity_record(session, station_ids, from_timestamp, order='max'),
+            min_value=get_inner_humidity_record(session, station_ids, from_timestamp, order='min')
+        ),
+        outer_humidity_record = MeasurementRecord(
+            max_value=get_outer_humidity_record(session, station_ids, from_timestamp, order='max'),
+            min_value=get_outer_humidity_record(session, station_ids, from_timestamp, order='min')
+        ),
+        pressure_record = MeasurementRecord(
+            max_value=get_pressure_record(session, station_ids, from_timestamp, order='max'),
+            min_value=get_pressure_record(session, station_ids, from_timestamp, order='min')
+        ),
+        night_temperature_record = MeasurementRecord(
+            max_value=get_warmest_night_record(session, None, from_timestamp),
+            min_value=get_coldest_night_record(session, None, from_timestamp),
+        )
+    )