Create exam.py

app/models/exam.py

@@ -0,0 +1,66 @@
+# app/models/exam.py
+from datetime import datetime, date
+from sqlalchemy import Column, Integer, String, Text, DateTime, Date, DECIMAL, ForeignKey, Boolean, Time
+from sqlalchemy.orm import relationship
+from core.database import Base
+
+
+class Exam(Base):
+    __tablename__ = "exams"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(255), nullable=False)
+    exam_date = Column(Date, nullable=False)
+    exam_fee = Column(DECIMAL(10, 2), nullable=False)
+    registration_deadline = Column(Date, nullable=True)
+    stripe_link = Column(Text, nullable=True)
+    location = Column(String(255), nullable=True)
+    description = Column(Text, nullable=True)
+    status = Column(String(50), nullable=False, default="upcoming")  # upcoming, completed, cancelled
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    batches = relationship("ExamBatch", back_populates="exam", cascade="all, delete-orphan")
+
+
+class ExamBatch(Base):
+    __tablename__ = "exam_batches"
+
+    id = Column(Integer, primary_key=True, index=True)
+    exam_id = Column(Integer, ForeignKey("exams.id"), nullable=False)
+    batch_name = Column(String(255), nullable=False)
+    time_from = Column(Time, nullable=False)
+    time_to = Column(Time, nullable=False)
+    max_students = Column(Integer, nullable=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    exam = relationship("Exam", back_populates="batches")
+    registrations = relationship("ExamStudentRegistration", back_populates="batch", cascade="all, delete-orphan")
+
+
+class ExamStudentRegistration(Base):
+    __tablename__ = "exam_student_registrations"
+
+    id = Column(Integer, primary_key=True, index=True)
+    exam_id = Column(Integer, ForeignKey("exams.id"), nullable=False)
+    batch_id = Column(Integer, ForeignKey("exam_batches.id"), nullable=False)
+    student_id = Column(Integer, ForeignKey("students.id"), nullable=True)  # Can be null if student deleted
+    student_name = Column(String(255), nullable=False)
+    student_email = Column(String(255), nullable=False)
+    current_level = Column(String(100), nullable=True)
+    target_level = Column(String(100), nullable=True)
+    registration_status = Column(String(50), nullable=False, default="invited")  # invited, registered, paid, cancelled
+    payment_status = Column(String(50), nullable=False, default="pending")  # pending, paid, refunded
+    notification_sent = Column(Boolean, default=False)
+    added_by_ai = Column(Boolean, default=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    exam = relationship("Exam")
+    batch = relationship("ExamBatch", back_populates="registrations")
+    student = relationship("Student")
+