Initial commit -- just started to factor and implement python fast API backend

backend/models.py

@@ -0,0 +1,84 @@
+from sqlalchemy import Column, Integer, String, ForeignKey, Table, DateTime, Enum
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from .database import Base
+
+task_tags = Table(
+    "task_tags",
+    Base.metadata,
+    Column("task_id", String, ForeignKey("tasks.id", ondelete="CASCADE"), primary_key=True),
+    Column("tag", String, ForeignKey("tags.tag", ondelete="CASCADE"), primary_key=True),
+)
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(String, primary_key=True)
+    name = Column(String, nullable=False)
+    role = Column(String, nullable=False)
+    hue = Column(Integer, nullable=False)
+    initials = Column(String, nullable=False)
+    email = Column(String)
+    phone = Column(String)
+    photo = Column(String)
+    password_hash = Column(String)
+    account_type = Column(String, nullable=False, default="standard")
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    tasks = relationship("Task", back_populates="assignee", foreign_keys="Task.assignee_id")
+    notes = relationship("TaskNote", back_populates="author")
+
+class Task(Base):
+    __tablename__ = "tasks"
+
+    id = Column(String, primary_key=True)
+    title = Column(String, nullable=False)
+    description = Column(String)
+    assignee_id = Column(String, ForeignKey("users.id"), nullable=False)
+    added_by = Column(String, nullable=False)
+    priority = Column(String, nullable=False) # low, med, high
+    source = Column(String, nullable=False) # manual, imessage, email, automation
+    status = Column(String, nullable=False, default="open")
+    added_at = Column(DateTime(timezone=True), server_default=func.now())
+    due_at = Column(DateTime(timezone=True))
+    reminder_at = Column(DateTime(timezone=True))
+
+    assignee = relationship("User", back_populates="tasks", foreign_keys=[assignee_id])
+    tags = relationship("Tag", secondary=task_tags, back_populates="tasks")
+    notes = relationship("TaskNote", back_populates="task", cascade="all, delete")
+
+class Tag(Base):
+    __tablename__ = "tags"
+    tag = Column(String, primary_key=True)
+    tasks = relationship("Task", secondary=task_tags, back_populates="tags")
+
+class TaskNote(Base):
+    __tablename__ = "task_notes"
+
+    id = Column(Integer, primary_key=True, index=True)
+    task_id = Column(String, ForeignKey("tasks.id", ondelete="CASCADE"), nullable=False)
+    author_id = Column(String, ForeignKey("users.id"), nullable=False)
+    body = Column(String, nullable=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    task = relationship("Task", back_populates="notes")
+    author = relationship("User", back_populates="notes")
+
+class AuditLog(Base):
+    __tablename__ = "audit_log"
+
+    id = Column(String, primary_key=True)
+    at = Column(DateTime(timezone=True), server_default=func.now())
+    actor = Column(String, nullable=False)
+    action = Column(String, nullable=False)
+    summary = Column(String, nullable=False)
+    target = Column(String)
+
+class Session(Base):
+    __tablename__ = "sessions"
+
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(String, ForeignKey("users.id"), nullable=False)
+    device = Column(String, nullable=False)
+    location = Column(String)
+    last_active = Column(DateTime(timezone=True), server_default=func.now())