Refactoring scheduling schema

Co-authored-by: emilyniee <[email protected]>

Author: sunbagel

backend/app/models/AvailableTime.py

@@ -0,0 +1,13 @@
+from sqlalchemy import Column, Integer, String
+
+from .Base import Base
+
+# AvailableTimes as a pure association table
+# only exists to establish a relationship between Users and Time Blocks
+# a User has an Availability which is composed of many time blocks
+available_times = Table(
+    "available_times",
+    Base.metadata,
+    Column("time_block_id", ForeignKey("time_blocks.id"), primary_key=True),
+    Column("user_id", ForeignKey("users.id"), primary_key=True),
+)

backend/app/models/SuggestedTime.py

@@ -0,0 +1,12 @@
+from .Base import Base
+from sqlalchemy import Column, DateTime, ForeignKey
+
+# SuggestedTimes as a pure association table 
+# only exists to establish a relationship between Matches and Time Blocks (many to many relationship)
+suggested_times = Table(
+    "suggested_times",
+    Base.metadata,
+    # composite key of match and time block
+    Column("match_id", ForeignKey("matches.id"), primary_key=True),
+    Column("time_block_id", ForeignKey("time_blocks.id"), primary_key=True),
+)

backend/app/models/TimeBlock.py

@@ -10,9 +10,14 @@
 class TimeBlock(Base):
     __tablename__ = "time_blocks"
     id = Column(Integer, primary_key=True)
-    schedule_id = Column(Integer, ForeignKey("schedules.id"), nullable = False)
     start_time = Column(DateTime)
-    end_time = Column(DateTime)
 
-    schedule = relationship("Schedule", back_populates="time_blocks")
+    # if a match has been confirmed on this time block, this is non null
+    confirmed_match = relationship("Match", back_populates="confirmed_time", uselist=False)
 
+    # suggested matches 
+    suggested_matches = relationship("Match", secondary="suggested_times", back_populates="suggested_time_blocks")
+    
+    # the availability that the timeblock is a part of for a given user
+    users = relationship("User", secondary="available_times", back_populates="availability")
+    

backend/app/models/User.py

@@ -17,3 +17,6 @@ class User(Base):
     auth_id = Column(String, nullable=False)
 
     role = relationship("Role")
+
+    # time blocks in an availability for a user
+    availability = relationship("TimeBlock", secondary="available_times", back_populates="users")