Add backend

diff --git a/.gitignore b/.gitignore
index 894a44cc066a027465cd26d634948d56d13af9af..4ad64672f26fdfeaec1fd7f5ce9d43c924ce6f4d 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -102,3 +102,5 @@ venv.bak/
 
 # mypy
 .mypy_cache/
+
+.idea/
\ No newline at end of file

diff --git a/app.py b/app.py
new file mode 100644 (file)
index 0000000..733e0e1
--- /dev/null
+++ b/app.py
@@ -0,0 +1,73 @@
+from bottle import get, post, run, request
+import uuid
+from geo import distance
+
+
+class Game:
+    def __init__(self, game_id, current_coordinates):
+        self.id = game_id
+        self.current_coordinates = current_coordinates
+        self.is_finished = False
+        self.answer_coordinates = None
+        self.distance = None
+
+
+games = {}
+
+
+@get('/api/games')
+def get_games():
+    return {
+        "games": [{"game_id": g.id, "coordinates": g.current_coordinates if g.is_finished else None} for g in
+                  games.values()]
+    }
+
+
+@post('/api/games')
+def post_game():
+    game_id = str(uuid.uuid4())
+
+    game = Game(game_id, (56.832469, 60.605989))
+    games[game_id] = game
+
+    return {
+        "game_id": game_id
+    }
+
+
+@get('/api/games/<game_id>')
+def get_game(game_id):
+    game = games[game_id]
+
+    return {
+        "id": game_id
+    }
+
+
+@post('/api/games/<game_id>/finish')
+def finish_game(game_id):
+    game = games[game_id]
+
+    if game.is_finished:
+        return {
+            "right_coordinates": game.current_coordinates,
+            "distance": game.distance
+        }
+
+    answer = request.json
+
+    answer_coordinates = (answer["latitude"], answer["longitude"])
+
+    d = distance(game.current_coordinates, answer_coordinates)
+
+    game.is_finished = True
+    game.answer_coordinates = answer_coordinates
+    game.distance = d
+
+    return {
+        "right_coordinates": game.current_coordinates,
+        "distance": d
+    }
+
+
+run(host='localhost', port=8080, debug=True, server='paste')

diff --git a/geo.py b/geo.py
new file mode 100644 (file)
index 0000000..2e13c6b
--- /dev/null
+++ b/geo.py
@@ -0,0 +1,18 @@
+from math import sin, cos, sqrt, atan2, radians
+
+R = 6373000.0
+
+
+def distance(point1, point2):
+    lat1 = radians(point1[0])
+    lon1 = radians(point1[1])
+    lat2 = radians(point2[0])
+    lon2 = radians(point2[1])
+
+    dlon = lon2 - lon1
+    dlat = lat2 - lat1
+
+    a = sin(dlat / 2) ** 2 + cos(lat1) * cos(lat2) * sin(dlon / 2) ** 2
+    c = 2 * atan2(sqrt(a), sqrt(1 - a))
+
+    return R * c

diff --git a/requirements.txt b/requirements.txt
new file mode 100644 (file)
index 0000000..791f9dc
Binary files /dev/null and b/requirements.txt differ