add site generation from astropy and user input

flows/instruments/sites.py

@@ -1,18 +1,47 @@
 from dataclasses import dataclass
 from astropy.coordinates import EarthLocation
+import astropy.units as u
 from typing import Optional
 from tendrils import api
 
 @dataclass
 class Site:
     siteid: int
     sitename: str
-    longtitude: float
+    longitude: float
     latitude: float
     elevation: float
-    earth_location: EarthLocation
+    earth_location: Optional[EarthLocation] = None
     site_keyword: Optional[str] = None
+
+    def __post_init__(self):
+        if self.earth_location is None:
+            return
+        self.earth_location = EarthLocation(
+            lat=self.latitude*u.deg,
+            lon=self.longitude*u.deg,
+            height=self.elevation*u.m
+        )
 
     @classmethod
-    def get_site(cls, siteid: int) -> 'Site':
-        return cls(**api.get_site(siteid))
+    def from_flows(cls, siteid: int) -> 'Site':
+        return cls(**api.get_site(siteid))
+
+    @classmethod
+    def from_astropy(cls, sitename: str) -> 'Site':
+        loc = EarthLocation.of_site(sitename)
+        return cls(siteid=999, sitename=sitename, 
+            longitude=loc.long.value, latitude=loc.lat.value,
+            elevation=loc.height.value, earth_location=loc)
+
+    @classmethod
+    def from_query(cls) -> 'Site':
+        sitename = input('Enter a site name for logging: ')
+        longitude = float(input('Enter longitude in degrees: '))
+        lat = float(input('Enter latitude in degrees: '))
+        elevation = float(input('Enter elevation in meters: '))
+        siteid = 1000  # hardcoded for user defined site
+        return cls(siteid=999, sitename=sitename, 
+            longitude=longitude, latitude=lat,
+            elevation=elevation)
+