add user-related endpoints

app/__init__.py

@@ -1,7 +1,9 @@
-from flask import Flask
+from flask import Flask, request
 import time
+from app.local_db import LocalDB
 
 app = Flask(__name__)
+ldb = LocalDB()
 
 @app.route("/healthcheck")
 def ep_healthcheck():
@@ -9,3 +11,39 @@ def ep_healthcheck():
         "date": time.strftime('%Y.%m.%d %H:%M:%S'),
         "status": "OK"
     }
+
+@app.route("/users", methods = ["GET"])
+def ep_users_get():
+    return ldb.get_users()
+
+@app.route("/user/<user_id>", methods = ["GET"])
+def ep_user_get(user_id):
+    user = ldb.get_user(user_id)
+
+    if 'uuid' in user:
+        return user
+    else:
+        return user, 404
+
+@app.route("/user", methods = ["POST"])
+def ep_user_post():
+    body = request.json
+
+    if 'name' in body:
+        r = ldb.add_user(body['name'])
+
+        if 'uuid' in r:
+            return r
+        else:
+            return r, 403
+    else:
+        return {}, 403
+
+@app.route("/user/<user_id>", methods = ["DELETE"])
+def ep_user_delete(user_id):
+    r = ldb.del_user(user_id)
+
+    if 'uuid' in r:
+        return r
+    else:
+        return r, 403

app/local_db.py

@@ -0,0 +1,44 @@
+import uuid
+
+class LocalDB:
+    def __init__(self):
+        self.users = {}
+        self.categories = {}
+        self.records = {}
+
+    def get_users(self):
+        return self.users
+
+    def get_user(self, uid):
+        if uid in self.users:
+            return {
+                'uuid': uid,
+                'name': self.users[uid]
+            }
+        else:
+            return {}
+
+    def add_user(self, name):
+        if not name:
+            return {}
+
+        if name in set(self.users.values()):
+            return {}
+
+        new_uuid = uuid.uuid4().hex
+        self.users[new_uuid] = name
+        return {
+            'uuid': new_uuid,
+            'name': name
+        }
+
+    def del_user(self, uid):
+        if uid in self.users:
+            name = self.users[uid]
+            del self.users[uid]
+            return {
+                'uuid': uid,
+                'name': name
+            }
+        else:
+            return {}