add the matches model

Author: RohanNankani

backend/app/models/Matches.py

@@ -0,0 +1,41 @@
+import uuid
+
+from sqlalchemy import Column, ForeignKey, DateTime, Enum, Integer, String
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import relationship
+from datetime import datetime
+from sqlalchemy.sql import func
+
+import enum
+
+from .Base import Base
+
+class MatchStatus(enum.Enum):
+    PENDING_ADMIN_APPROVAL = "pending_admin_approval"
+    APPROVED = "approved"
+    REJECTED = "rejected"
+
+class ScheduleStatus(enum.Enum):
+    SCHEDULED = "scheduled"
+    COMPLETED = "completed"
+    DECLINED = "declined" # This status is for when a user declines a scheduled match
+    PENDING_PARTICIPANT_RESPONSE = "pending_participant_response"
+    PENDING_VOLUNTEER_RESPONSE = "pending_volunteer_response"
+    CANCELLED = "cancelled" # This status is for when a match is cancelled by an admin
+
+class Matches(Base):
+    __tablename__ = "matches"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+
+    participant_id = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
+    volunteer_id = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
+
+    match_status = Column(Enum(MatchStatus), nullable=True, default=MatchStatus.PENDING_ADMIN_APPROVAL)
+    schedule_status = Column(Enum(ScheduleStatus), nullable=True)
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+
+    participant = relationship("User", foreign_keys=[participant_id])
+    volunteer = relationship("User", foreign_keys=[volunteer_id])