Initial commit

Author: anafro

.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/
+share/python-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/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# 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/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

database/connection.py

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+import sqlite3
+
+
+def dict_factory(cursor, row):
+    d = {}
+    for idx, col in enumerate(cursor.description):
+        d[col[0]] = row[idx]
+    return d
+
+
+def print_query(query):
+    print(f"📃  Running query: {query}")
+
+
+class QueryExecutionException(Exception):
+    pass
+
+
+class Connection:
+    def __init__(self, print_queries=False, database_filename=".sqlite"):
+        self.sqlite3_connection = sqlite3.connect(database_filename)
+        self.sqlite3_connection.row_factory = dict_factory
+        self.sqlite3_connection.set_trace_callback(print_query if print_queries else None)
+        self.sqlite3_cursor = self.sqlite3_connection.cursor()
+        
+    def execute(self, query: str, **query_parameters):
+        try:
+            self.sqlite3_cursor.execute(query, query_parameters)
+            self.sqlite3_connection.commit()
+            return self.sqlite3_cursor.fetchall()
+        except Exception as e:
+            raise QueryExecutionException(f"Could not execute query '{query}', because {e}. Parameters: {query_parameters}")
+    
+    @property
+    def last_id(self):
+        return self.sqlite3_cursor.lastrowid
+    
+    def fetch_first(self, query: str, **query_parameters):
+        return next(iter(self.execute(query, **query_parameters)), None)
+    
+    def close(self):
+        self.sqlite3_cursor.close()
+        
+    def __enter__(self):
+        return self
+    
+    def __exit__(self, exc_type, exc_value, trace):
+        self.close()
+        
+
+default_connection = Connection(print_queries=False)

database/types.py

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+from jethive.model import Model, guess_sql_type
+
+

migration.py

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+from models.manufacturer import Manufacturer
+from models.plane_type import PlaneType
+from models.plane import Plane
+from models.airline import Airline
+from models.country import Country
+from models.city import City
+from models.airport import Airport
+from models.regular_flight import RegularFlight
+from models.scheduled_flight import ScheduledFlight
+from models.scheduled_flight_service_zone import ScheduledFlightServiceZone
+from models.passenger import Passenger
+from models.ticket import Ticket
+from models.service_level import ServiceLevel
+from models.plane_service_zone import PlaneServiceZone
+
+
+models = [
+    Manufacturer,
+    PlaneType,
+    Plane,
+    Airline,
+    Country,
+    City,
+    Airport,
+    RegularFlight,
+    ScheduledFlight,
+    ScheduledFlightServiceZone,
+    Passenger,
+    Ticket,
+    ServiceLevel,
+    PlaneServiceZone
+]
+
+
+def up():
+    for model in models:
+        print(f'🛠️\tCreating a table for {model.table_name}...')
+        model.up()
+
+    print('✅\tMigration is complete', end='\n\n')
+
+
+def down():
+    for model in reversed(models):
+        print(f'🗑️\tDeleting a table with {model.table_name}...')
+        model.down()
+
+    print('✅\tRollback is complete', end='\n\n')
+
+
+def reset():
+    down()
+    up()
+
+
+def playground(function):
+    def playground_function_wrapper(*args, **kwargs):
+        reset()
+        function(*args, **kwargs)
+        down()
+
+    return playground_function_wrapper