diff --git a/lib/__pycache__/models.cpython-38.pyc b/lib/__pycache__/models.cpython-38.pyc new file mode 100644 index 000000000..0b606d4c1 Binary files /dev/null and b/lib/__pycache__/models.cpython-38.pyc differ diff --git a/lib/debug.py b/lib/debug.py index 4f922eb69..c53815c0f 100644 --- a/lib/debug.py +++ b/lib/debug.py @@ -1,9 +1,24 @@ -#!/usr/bin/env python3 +from models import session, Dev, Company, Freebie -from sqlalchemy import create_engine +# Example tests +alice = session.query(Dev).filter_by(name="Alice").first() +bob = session.query(Dev).filter_by(name="Bob").first() +hackcorp = session.query(Company).filter_by(name="HackCorp").first() -from models import Company, Dev +# Print Alice's freebies +for freebie in alice.freebies: + print(freebie.print_details()) -if __name__ == '__main__': - engine = create_engine('sqlite:///freebies.db') - import ipdb; ipdb.set_trace() +# Check if Alice received a Sticker +print("Received Sticker?", alice.received_one("Sticker")) # True + +# Oldest company +print("Oldest company:", Company.oldest_company().name) # CodeLabs + +# Give away a freebie +freebie_to_give = alice.freebies[0] +alice.give_away(bob, freebie_to_give) +print(freebie_to_give.print_details()) # Now belongs to Bob + +# Check company devs +print("HackCorp devs:", [dev.name for dev in hackcorp.devs]) diff --git a/lib/freebies.db b/lib/freebies.db index 12beb1c96..a1ea28105 100644 Binary files a/lib/freebies.db and b/lib/freebies.db differ diff --git a/lib/migrations/versions/7a71dbf71c64_create_db.py b/lib/migrations/versions/7a71dbf71c64_create_db.py index 23e0a655b..3346debb2 100644 --- a/lib/migrations/versions/7a71dbf71c64_create_db.py +++ b/lib/migrations/versions/7a71dbf71c64_create_db.py @@ -16,9 +16,16 @@ depends_on = None -def upgrade() -> None: - pass +def upgrade(): + op.create_table( + 'freebies', + sa.Column('id', sa.Integer, primary_key=True), + sa.Column('item_name', sa.String, nullable=False), + sa.Column('value', sa.Integer, nullable=False), + sa.Column('dev_id', sa.Integer, sa.ForeignKey('devs.id'), nullable=False), + sa.Column('company_id', sa.Integer, sa.ForeignKey('companies.id'), nullable=False) + ) + +def downgrade(): + op.drop_table('freebies') - -def downgrade() -> None: - pass diff --git a/lib/migrations/versions/c467898cd775_create_freebies_table.py b/lib/migrations/versions/c467898cd775_create_freebies_table.py new file mode 100644 index 000000000..9a16d7bc5 --- /dev/null +++ b/lib/migrations/versions/c467898cd775_create_freebies_table.py @@ -0,0 +1,30 @@ +"""create freebies table + +Revision ID: c467898cd775 +Revises: 5f72c58bf48c +Create Date: 2025-12-04 18:58:57.086685 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = 'c467898cd775' +down_revision = '5f72c58bf48c' +branch_labels = None +depends_on = None + + +def upgrade(): + op.create_table( + 'freebies', + sa.Column('id', sa.Integer, primary_key=True), + sa.Column('item_name', sa.String(), nullable=False), + sa.Column('value', sa.Integer(), nullable=False), + sa.Column('dev_id', sa.Integer(), sa.ForeignKey('devs.id'), nullable=False), + sa.Column('company_id', sa.Integer(), sa.ForeignKey('companies.id'), nullable=False) + ) + +def downgrade(): + op.drop_table('freebies') \ No newline at end of file diff --git a/lib/models.py b/lib/models.py index 2681bee5a..a66537ae9 100644 --- a/lib/models.py +++ b/lib/models.py @@ -1,29 +1,113 @@ -from sqlalchemy import ForeignKey, Column, Integer, String, MetaData -from sqlalchemy.orm import relationship, backref -from sqlalchemy.ext.declarative import declarative_base +import os +from sqlalchemy import Column, Integer, String, ForeignKey, MetaData, create_engine +from sqlalchemy.orm import declarative_base, relationship, sessionmaker +# ----------------------------- +# Database setup +# ----------------------------- +BASE_DIR = os.path.dirname(__file__) +DB_FILE = os.path.join(BASE_DIR, "freebies.db") +os.makedirs(BASE_DIR, exist_ok=True) + +engine = create_engine(f"sqlite:///{DB_FILE}", echo=False) +Session = sessionmaker(bind=engine) +session = Session() + +# ----------------------------- +# Naming convention +# ----------------------------- convention = { "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s", } metadata = MetaData(naming_convention=convention) - Base = declarative_base(metadata=metadata) +# ----------------------------- +# Company Model +# ----------------------------- class Company(Base): - __tablename__ = 'companies' + __tablename__ = "companies" - id = Column(Integer(), primary_key=True) - name = Column(String()) - founding_year = Column(Integer()) + id = Column(Integer, primary_key=True) + name = Column(String) + founding_year = Column(Integer) + + freebies = relationship("Freebie", back_populates="company") def __repr__(self): - return f'' + return f"" + + @property + def devs(self): + """Return unique devs who received freebies from this company.""" + return list({freebie.dev for freebie in self.freebies}) + def give_freebie(self, dev, item_name, value): + """Company gives a freebie to a dev.""" + new_freebie = Freebie(item_name=item_name, value=value, dev=dev, company=self) + session.add(new_freebie) + session.commit() + return new_freebie + + @classmethod + def oldest_company(cls): + """Return the oldest company.""" + return session.query(cls).order_by(cls.founding_year.asc()).first() + +# ----------------------------- +# Dev Model +# ----------------------------- class Dev(Base): - __tablename__ = 'devs' + __tablename__ = "devs" + + id = Column(Integer, primary_key=True) + name = Column(String) + + freebies = relationship("Freebie", back_populates="dev") - id = Column(Integer(), primary_key=True) - name= Column(String()) + def __repr__(self): + return f"" + + @property + def companies(self): + """Return unique companies the dev received freebies from.""" + return list({freebie.company for freebie in self.freebies}) + + def received_one(self, item_name): + """Check if dev has received a freebie by name.""" + return any(f.item_name == item_name for f in self.freebies) + + def give_away(self, new_dev, freebie): + """Transfer a freebie to another dev.""" + if freebie.dev != self: + return None + freebie.dev = new_dev + session.commit() + return freebie + +# ----------------------------- +# Freebie Model +# ----------------------------- +class Freebie(Base): + __tablename__ = "freebies" + + id = Column(Integer, primary_key=True) + item_name = Column(String) + value = Column(Integer) + dev_id = Column(Integer, ForeignKey("devs.id")) + company_id = Column(Integer, ForeignKey("companies.id")) + + dev = relationship("Dev", back_populates="freebies") + company = relationship("Company", back_populates="freebies") def __repr__(self): - return f'' + return f"" + + def print_details(self): + """Return a string describing the freebie.""" + return f"{self.dev.name} owns a {self.item_name} from {self.company.name}" + +# ----------------------------- +# Create tables +# ----------------------------- +Base.metadata.create_all(engine) diff --git a/lib/seed.py b/lib/seed.py index b16becbbb..65c67de29 100644 --- a/lib/seed.py +++ b/lib/seed.py @@ -1,3 +1,39 @@ -#!/usr/bin/env python3 +from models import session, Company, Dev -# Script goes here! +# ----------------------------- +# Clear existing data +# ----------------------------- +session.query(Company).delete() +session.query(Dev).delete() +session.commit() + +# ----------------------------- +# Create sample companies +# ----------------------------- +company1 = Company(name="HackCorp", founding_year=2010) +company2 = Company(name="CodeLabs", founding_year=2005) +company3 = Company(name="DevWorks", founding_year=2015) + +# ----------------------------- +# Create sample devs +# ----------------------------- +dev1 = Dev(name="Alice") +dev2 = Dev(name="Bob") +dev3 = Dev(name="Charlie") + +# ----------------------------- +# Add to DB +# ----------------------------- +session.add_all([company1, company2, company3, dev1, dev2, dev3]) +session.commit() + +# ----------------------------- +# Give some freebies +# ----------------------------- +company1.give_freebie(dev1, "Sticker", 5) +company1.give_freebie(dev2, "T-Shirt", 20) +company2.give_freebie(dev2, "Mug", 10) +company3.give_freebie(dev3, "Notebook", 15) +company3.give_freebie(dev1, "Pen", 3) + +print("Seeding completed successfully!")