feat: Issue24 registration api backend

.env.template

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+FLASK_ENVIRONMENT_CONFIG = <dev-or-test-or-prod>
+SECRET_KEY = <your-secret-key>
+SECURITY_PASSWORD_SALT = <your-security-password-salt>
+MAIL_DEFAULT_SENDER = <mail-default-sender>
+MAIL_SERVER = <mail-server>
+APP_MAIL_USERNAME = <app-mail-username>
+APP_MAIL_PASSWORD = <app-mail-password>
+MOCK_EMAIL = <True-or-False>
+FLASK_APP=run.py
+DB_TYPE=postgresql
+DB_USERNAME= <db-username>
+DB_PASSWORD= <db-password>
+DB_ENDPOINT= <db-endpoint>
+DB_NAME=bit_schema
+DB_TEST_NAME=bit_schema_test

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+
+# PyCharm project settings
+.idea/
+
+# vscode
+.vscode/
+
+*.db
+
+# aws-eb
+.elasticbeanstalk/

.pylintrc

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+[MESSAGES CONTROL]
+disable=missing-docstring, C0301, R0801, E203, E266, E501, W503, R0401, R0911, R0912, C0330, W0511, R0903, C0303, C0412, E0602, C0103, C0413, W0212, W0614, W0401, E1101, W0613, W0611, R0902, R0913, C0415
+select = B,C,E,F,W,T4,B9,

.travis.yml

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+language: python
+sudo: required
+python:
+  - '3.6'
+cache: pip
+services:
+    - postgresql
+addons:
+    postgresql: '10'
+    apt:
+      packages:
+      - postgresql-10
+      - postgresql-client-10
+env:
+  global:
+  - PGPORT=5432
+before_script:
+  - psql -c 'create database bit_schema_test;' -U postgres
+  - psql -c 'create schema bitschema;' -U postgres
+  - psql -c 'create schema test_schema;' -U postgres
+  - psql -c 'create schema test_schema_2;' -U postgres
+install:
+  - pip3 install -r requirements.txt
+script:
+  - python -m unittest discover tests -v

Procfile

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+web: gunicorn run:application

README.md

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+# Bridge-In-Tech (backend)
+Bridge-In-Tech is an application that allows industries/companies, mentors and students to actively collaborate to one another. 
+
+This is the backend client of Bridge-In-Tech.
+
+## Contributing
+
+**This project is under active development**
+
+
+
+Please read our [Contributing Guidelines](.github/CONTRIBUTING.md), [Code of Conduct](.github/CODE_OF_CONDUCT.md) and [Reporting Guidelines](.github/REPORTING_GUIDELINES.md) thoroughly.
+
+
+## Branches
+
+This repository has the following branches:
+- **master**: This branch contains the deployment of the backend.
+- **develop**: This contains the latest code. All the contributing PRs must be sent to this branch.
+
+## Contact
+
+If you have any questions or want to discuss something about this repo, feel free to join our [Zulip Community](http://anitab-org.zulipchat.com/)! If you are a new contributor, head over to this project's stream [#bridge-in-tech](https://anitab-org.zulipchat.com/#narrow/stream/237630-bridge-in-tech) on Zulip to see ongoing discussions.
+
+## License
+
+The project is licensed under the GNU General Public License v3.0. Learn more about it in the [LICENSE](LICENSE) file.

app/api/bit_extension.py

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+from flask_restx import Api
+
+api = Api(
+    title="Bridge In Tech API",
+    version="1.0",
+    description="API documentation for the backend of Bridge In Tech. \n \n"
+    + "Bridge In Tech is an application inspired by the existing AnitaB.org Mentorship System, "
+    + "It encourages organizations to collaborate with the mentors and mentees on mentoring programs. \n \n"
+    + "The main repository of the Backend System can be found here: https://github.com/anitab-org/bridge-in-tech-backend \n \n"
+    + "The Web client for the Mentorship System can be found here: https://github.com/anitab-org/bridge-in-tech-web \n \n"
+    + "For more information about the project here's a link to our wiki guide: https://github.com/anitab-org/bridge-in-tech-backend/wiki"
+    # doc='/docs/'
+)
+api.namespaces.clear()
+
+# Adding namespaces
+from app.api.resources.users import users_ns as user_namespace
+
+api.add_namespace(user_namespace, path="/")

app/api/dao/user_extension.py

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+from http import HTTPStatus
+# from typing import Dict
+# from sqlalchemy import func
+from app.database.models.bit_schema.user_extension import UserExtensionModel
+from app import messages
+
+
+class UserExtensionDAO:
+
+    """Data Access Object for Users_Extension functionalities"""
+
+    @staticmethod
+    def create_user_extension(data):
+        """Creates a user_extension instance for a new registered user.
+
+        Arguments:
+            data: A list containing user's id, boolean value of whether or not
+            the user is representing an organization, as well as their timezone
+
+        Returns:
+                A dictionary containing "message" which indicates whether or not the user_exension was created successfully and "code" for the HTTP response code.
+        """
+
+        user_id = data["user_id"]
+        is_organization_rep = data["is_organization_rep"]
+        timezone = data["timezone"]
+
+        user_extension = UserExtensionModel(user_id, is_organization_rep, timezone)
+
+        user_extension.save_to_db()
+
+        response = {
+            "message": f"{messages.USER_WAS_CREATED_SUCCESSFULLY}",
+            "code": f"{HTTPStatus.CREATED}",
+        }
+
+        return response

app/api/jwt_extension.py

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+from http import HTTPStatus
+from flask_jwt_extended import JWTManager
+from app import messages
+from app.api.bit_extension import api
+
+jwt = JWTManager()
+
+# This is needed for the error handlers to work with flask-restplus
+jwt._set_error_handler_callbacks(api)
+
+
+@jwt.expired_token_loader
+def my_expired_token_callback():
+    return messages.TOKEN_HAS_EXPIRED, HTTPStatus.UNAUTHORIZED
+
+
+@jwt.invalid_token_loader
+def my_invalid_token_callback():
+    return messages.TOKEN_IS_INVALID, HTTPStatus.UNAUTHORIZED
+
+
+@jwt.unauthorized_loader
+def my_unauthorized_request_callback():
+    return messages.AUTHORISATION_TOKEN_IS_MISSING, HTTPStatus.UNAUTHORIZED

app/api/mail_extension.py

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+from flask_mail import Mail
+
+mail = Mail()

app/api/models/user.py

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+from flask_restx import fields, Model
+
+
+def add_models_to_namespace(api_namespace):
+    api_namespace.models[register_user_api_model.name] = register_user_api_model
+
+
+register_user_api_model = Model(
+    "User registration model",
+    {
+        "name": fields.String(required=True, description="User name"),
+        "username": fields.String(required=True, description="User username"),
+        "password": fields.String(required=True, description="User password"),
+        "email": fields.String(required=True, description="User email"),
+        "terms_and_conditions_checked": fields.Boolean(
+            required=True, description="User check Terms and Conditions value"
+        ),
+        "need_mentoring": fields.Boolean(
+            required=False, description="User need mentoring indication"
+        ),
+        "available_to_mentor": fields.Boolean(
+            required=False, description="User availability to mentor indication"
+        ),
+    },
+)

app/api/ms_api_utils.py

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+import logging
+import requests
+from http import HTTPStatus
+from app import messages
+
+# from requests.exceptions import HTTPError
+from flask import json
+# from urllib3.exceptions import HTTPError
+# from werkzeug.exceptions import HTTPException
+
+# set base url
+
+# for ms-api local server
+BASE_MS_API_URL = "http://127.0.0.1:4000"
+
+# for MS-API on Heroku server
+# WARNING!!! When you push a PR, for travis to pass test cases related to MS API
+# Heroku MS API needs to be set as preference over the localhost. Otherwise, make sure
+# you run the MS API local server when you push the PR.
+# BASE_MS_API_URL = "https://bridge-in-tech-ms-test.herokuapp.com"
+
+
+# create instance
+def post_request(request_url, data):
+    try:
+
+        response = requests.post(
+            request_url, json=data, headers={"Accept": "application/json"}
+        )
+        response.raise_for_status()
+    except requests.ConnectionError as e:
+        return f"{e.response.json()}", HTTPStatus.INTERNAL_SERVER_ERROR
+    except requests.HTTPError as e:
+        return f"{e.response.json()}", e.response.status_code
+    except Exception as e:
+        return f"{e.response.json()}", e.response.status_code
+    else:
+        logging.warning(f"{response}")
+        return f"{response.json()}", response.status_code