Abstract class

Abstract class/abstractCoronavirus.py

@@ -0,0 +1,34 @@
+from abc import ABCMeta, abstractmethod
+
+class AbstractCoronavirus(metaclass=ABCMeta):
+
+        @abstractmethod
+        def _update():
+            pass
+        @abstractmethod
+        def _getSources():
+            pass
+        @abstractmethod
+        def _request():
+            pass
+        @abstractmethod
+        def getAll():
+            pass
+        @abstractmethod
+        def getLatestChanges():
+            pass
+        @abstractmethod
+        def getLatest():
+            pass
+        @abstractmethod
+        def getLocations():
+            pass
+        @abstractmethod
+        def getLocationByCountryCode():
+            pass
+        @abstractmethod
+        def getLocationByCountry():
+            pass
+        @abstractmethod
+        def getLocationById():
+            pass

COVID19Py/ObjectBuilder.py

@@ -0,0 +1,91 @@
+from abc import ABCMeta,abstractmethod
+from typing import Dict, List
+import covid19
+import requests
+import json
+
+"The Builder Interface"
+class InterfaceBuilder(metaclass=ABCMeta):
+    @staticmethod
+    @abstractmethod
+    def setURL():
+        "build url"
+
+    @staticmethod
+    @abstractmethod
+    def setDataSource():
+        "build data source"
+
+    @staticmethod
+    @abstractmethod
+    def getProduct():
+        "return the final product"
+
+"The concrete Builder"
+class ObjectBuilder(InterfaceBuilder):
+
+    def __init__(self):
+        self.product = covid19.COVID19()
+
+    def setURL(self,url):
+        if url == self.product.default_url:
+
+            # Load mirrors
+            response = requests.get(self.product.mirrors_source)
+            response.raise_for_status()
+            self.product.mirrors = response.json()
+            # Try to get sources as a test
+            for mirror in self.product.mirrors:
+                # Set URL of mirror
+                self.product.url = mirror["url"]
+                result = None
+
+                try:
+                    result = self.product._getSources()
+
+                except Exception as e:
+
+                    # URL did not work, reset it and move on
+                    self.product.url = ""
+                    continue
+
+                # TODO: Should have a better health-check, this is way too hacky...
+                if "jhu" in result:
+                    # We found a mirror that worked just fine, let's stick with it
+                    break
+
+                # None of the mirrors worked. Raise an error to inform the user.
+                raise RuntimeError("No available API mirror was found.")
+
+        else:
+            self.product.url = url
+
+        return self
+
+    def setDataSource(self,data_source):
+
+        self.product._valid_data_sources = self.product._getSources()
+
+        if data_source not in self.product._valid_data_sources:
+            raise ValueError("Invalid data source. Expected one of: %s" % self._valid_data_sources)
+        self.product.data_source = data_source
+
+        return self
+
+    def getProduct(self):
+        return self.product
+
+
+class Director:
+
+    @staticmethod
+    def constructURL(obj=ObjectBuilder(),url="https://covid-tracker-us.herokuapp.com"):
+        return obj.setURL(url)
+    @staticmethod
+    def constructDataSource(obj=ObjectBuilder(),dataSource='jhu'):
+        return obj.setDataSource(dataSource)
+    @staticmethod
+    def contructWholeProduct(obj=ObjectBuilder(),url="https://covid-tracker-us.herokuapp.com", dataSource='jhu'):
+        return obj.setURL(url).setDataSource(dataSource).getProduct()
+
+

COVID19Py/covid19.py

@@ -1,53 +1,18 @@
 from typing import Dict, List
 import requests
 import json
+from abstractCoronavirus import AbstractCoronavirus
 
-class COVID19(object):
-    default_url = "https://covid-tracker-us.herokuapp.com"
-    url = ""
-    data_source = ""
+class COVID19(AbstractCoronavirus):
     previousData = None
     latestData = None
-    _valid_data_sources = []
-
-    mirrors_source = "https://raw.github.com/Kamaropoulos/COVID19Py/master/mirrors.json"
-    mirrors = None
-
-    def __init__(self, url="https://covid-tracker-us.herokuapp.com", data_source='jhu'):
-        # Skip mirror checking if custom url was passed
-        if url == self.default_url:
-            # Load mirrors
-            response = requests.get(self.mirrors_source)
-            response.raise_for_status()
-            self.mirrors = response.json()
-
-            # Try to get sources as a test
-            for mirror in self.mirrors:
-                # Set URL of mirror
-                self.url = mirror["url"]
-                result = None
-                try:
-                    result = self._getSources()
-                except Exception as e:
-                    # URL did not work, reset it and move on
-                    self.url = ""
-                    continue
-
-                # TODO: Should have a better health-check, this is way too hacky...
-                if "jhu" in result:
-                    # We found a mirror that worked just fine, let's stick with it
-                    break
-
-                # None of the mirrors worked. Raise an error to inform the user.
-                raise RuntimeError("No available API mirror was found.")
-
-        else:
-            self.url = url
-
-        self._valid_data_sources = self._getSources()
-        if data_source not in self._valid_data_sources:
-            raise ValueError("Invalid data source. Expected one of: %s" % self._valid_data_sources)
-        self.data_source = data_source
+    def __init__(self):
+        self.default_url = "https://covid-tracker-us.herokuapp.com"
+        self.mirrors_source = "https://raw.github.com/Kamaropoulos/COVID19Py/master/mirrors.json"
+        self._valid_data_sources = []
+        self.url = "https://covid-tracker-us.herokuapp.com"
+        self.data_source = "jhu"
+        self.mirrors = None
 
     def _update(self, timelines):
         latest = self.getLatest()
@@ -67,7 +32,7 @@ def _getSources(self):
     def _request(self, endpoint, params=None):
         if params is None:
             params = {}
-        response = requests.get(self.url + endpoint, {**params, "source":self.data_source})
+        response = requests.get(self.url + endpoint, {**params, "source":self.data_source}) #syntax error fixed
         response.raise_for_status()
         return response.json()