Adicionar 2 rotas

api/views/errors.py

@@ -16,3 +16,9 @@ def ConflictingResources(message):
 
 def AuthenticationFailure(message):
     return error(4, "AuthenticationFailure", message, http_code=401)
+
+def ForbiddenError(message):
+    return error(5, "ForbiddenError", message, http_code=403)
+
+def FetchError(message):
+    return error(6, "FetchError", message, http_code=500)

api/views/helper.py

@@ -0,0 +1,65 @@
+from functools import wraps
+from flask import request
+from api.models.trainer import Trainer
+from .errors import AuthenticationFailure
+from api.app import app
+import requests
+import json
+import jwt
+
+class HTTPError(Exception):
+    def __init__(self, message):
+        self.message = message
+
+class TrainerNotFound(Exception):
+    pass
+
+def get_trainer_fail(id):
+    try:
+        trainer = Trainer.query.get(id)
+        if trainer is None:
+            raise TrainerNotFound()
+        return trainer
+    except:
+        raise TrainerNotFound()
+
+def get_trainer_by_nick_fail(nickname):
+    try:
+        trainer = Trainer.query.filter_by(nickname=nickname).one()
+        if trainer is None:
+            raise TrainerNotFound()
+        return trainer
+    except:
+        raise TrainerNotFound()
+
+# authenticação do trainer (decorator)
+def token_required(f):
+    @wraps(f)
+    def decorated(*args, **kwargs):
+        try:
+            token = request.headers["authorization"]
+            print(token)
+            print(app.config["SECRET_KEY"])
+            data = jwt.decode(token, app.config["SECRET_KEY"], algorithms=["HS256"])
+            print(data["username"])
+            trainer = get_trainer_by_nick_fail(data["username"])
+        except (TypeError, KeyError):
+            return AuthenticationFailure("JWT token required")
+        except:
+            return AuthenticationFailure("JWT token is invalid or expired")
+
+        return f(trainer, *args, **kwargs)
+    return decorated
+
+# seguintes funções puxam informações da pokeapi
+def set_pokemon_data(pokemon):
+    response = requests.get("https://pokeapi.co/api/v2/pokemon/{}".format(pokemon.pokemon_id))
+    if response.status_code != 200:
+        raise HTTPError("Could not fetch pokemon with id {}".format(pokemon.pokemon_id))
+    pokemon.pokemon_data = json.loads(response.text)
+
+async def async_set_pokemon_data(session, pokemon):
+    response = await session.get("https://pokeapi.co/api/v2/pokemon/{}".format(pokemon.pokemon_id))
+    if response.status != 200:
+        raise HTTPError("Could not fetch pokemon with id {}".format(pokemon.pokemon_id))
+    pokemon.pokemon_data = json.loads(await response.text())

api/views/parse_args.py

@@ -0,0 +1,33 @@
+from flask import request
+
+class ParsingException(Exception):
+    def __init__(self, message):
+        self.message = message
+
+def parse_int(name, minimum):
+    try:
+        result = int(request.args.get(name, minimum))
+    except ValueError:
+        raise ParsingException("Couldn't parse {} as integer".format(name))
+
+    if result < minimum:
+        raise ParsingException("{} must be greater than {}".format(name, minimum))
+
+    return result
+
+def parse_limit():
+    return parse_int("limit", -1)
+
+def parse_offset():
+    return parse_int("offset", 0)
+
+def parse_json_obj():
+    try:
+        json = request.get_json()
+    except:
+        raise ParsingException("Failed to parse JSON body")
+
+    if type(json) is not dict:
+        raise ParsingException("Expected JSON object as body")
+
+    return json

api/views/pokemon_owned.py

@@ -0,0 +1,64 @@
+from api.models.pokemon_owned import pokemon_owned_schema, pokemon_owned_schemas, PokemonOwned
+from api.app import db
+from .parse_args import parse_limit, parse_offset, ParsingException, parse_json_obj
+from .errors import ParsingError, FetchError, ConflictingResources
+from .helper import TrainerNotFound, HTTPError, get_trainer_fail, set_pokemon_data, async_set_pokemon_data
+from aiohttp import ClientSession
+from asyncio import create_task, gather
+from sqlalchemy.exc import IntegrityError
+
+def post_pokemon_owned(trainer_id):
+    try:
+        json = parse_json_obj()
+        pokemon_id = json["pokemon_id"]
+        name = json["name"]
+        level = json["level"]
+    except ParsingException as e:
+        return ParsingError(e.message)
+    except KeyError:
+        return ParsingError("Missing JSON object fields")
+
+    pokemon = PokemonOwned(
+            name=name,
+            level=level,
+            pokemon_id=pokemon_id,
+            trainer_id=trainer_id
+            )
+
+    try:
+        set_pokemon_data(pokemon)
+
+        db.session.add(pokemon)
+        db.session.commit()
+    except HTTPError as e:
+        return FetchError(e.message)
+    except IntegrityError:
+        return ConflictingResources("Trainer already has another pokemon with the same name")
+
+    return (pokemon_owned_schema.dump(pokemon), 201)
+
+async def get_pokemons_owned(trainer_id):
+    try:
+        limit = parse_limit()
+        offset = parse_offset()
+    except ParsingException as e:
+        return ParsingError(e.message)
+
+    try:
+        trainer = get_trainer_fail(trainer_id)
+    except TrainerNotFound:
+        return "", 404
+
+    pokemons = trainer.pokemons_list.limit(limit).offset(offset).all()
+
+    async with ClientSession() as session:
+        tasks = []
+        for pokemon in pokemons:
+            task = create_task(async_set_pokemon_data(session, pokemon))
+            tasks.append(task)
+        try:
+            await gather(*tasks)
+        except HTTPError as e:
+            return FetchError(e.message)
+
+    return pokemon_owned_schemas.dumps(pokemons)

api/views/trainer.py

@@ -3,7 +3,8 @@ from api.models.trainer import Trainer, trainer_schema, trainer_schemas, Invalid
 from api.app import db
 from api.app import app
 from flask import request, jsonify
-from .errors import ParsingError, ConflictingParameters, ConflictingResources, AuthenticationFailure
+from .errors import *
+from .parse_args import parse_limit, parse_offset, ParsingException, parse_json_obj
 from werkzeug.security import check_password_hash
 import datetime
 import jwt
@@ -12,19 +13,16 @@ def get_trainer(id):
     try:
         return trainer_schema.dump(Trainer.query.get(id))
     except:
-        return jsonify({})
+        return ("", 404)
 
 def get_trainers():
     args = request.args
 
     try:
-        limit = int(args.get("limit", -1))
-        offset = int(args.get("offset", 0))
-    except ValueError:
-        return ParsingError("Couldn't parse parameter as integer")
-
-    if limit < -1 or offset < 0:
-        return ParsingError("Expected positive integer as parameter")
+        limit = parse_limit()
+        offset = parse_offset()
+    except ParsingException as e:
+        return ParsingError(e.message)
 
     nickname = args.get("nickname", "")
     nickname_contains = args.get("nickname_contains", "")
@@ -53,14 +51,8 @@ def get_trainer_by_email(email):
 
 def post_trainer():
     try:
-        json = request.get_json()
-    except:
-        return ParsingError("Failed to parse JSON body")
+        json = parse_json_obj()
 
-    if type(json) is not dict:
-        return ParsingError("Expected JSON object as body")
-
-    try:
         nickname = json["nickname"]
         first_name = json["first_name"]
         last_name = json["last_name"]
@@ -81,25 +73,22 @@ def post_trainer():
         db.session.commit()
 
         return trainer_schema.dump(trainer)
+    except ParsingException as e:
+        return ParsingError(e.message)
     except InvalidTeam:
         return ParsingError("Field team is invalid")
     except KeyError:
         return ParsingError("Missing JSON object fields")
     except IntegrityError:
-        return ConflictingResources("Trainer with the same nickname or email already exists", http_code=500)
+        return ConflictingResources("Trainer with the same nickname or email already exists")
 
 def auth_trainer():
     try:
-        auth = request.get_json()
-    except:
-        return ParsingError("Failed to parse JSON body")
-
-    if type(auth) is not dict:
-        return ParsingError("Expected JSON object as body")
-
-    try:
+        auth = parse_json_obj()
         email = auth["email"]
         password = auth["password"]
+    except ParsingException as e:
+        return ParsingError(e.message)
     except KeyError:
         return AuthenticationFailure("Login required")
 
@@ -113,7 +102,7 @@ def auth_trainer():
                     "username": trainer.nickname,
                     "exp": datetime.datetime.now() + datetime.timedelta(hours=12)
                 },
-                app.config["SECRET_KEY"])
+                app.config["SECRET_KEY"], algorithm="HS256")
         return jsonify(
                 {
                     "id": trainer.id,