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DataFlow Server — Database Models (SQLAlchemy + SQLite)
"""
from datetime import datetime
from sqlalchemy import (
Column, String, Float, Integer, Boolean,
DateTime, Text, ForeignKey, Enum as SAEnum
)
from sqlalchemy.orm import relationship, declarative_base
Base = declarative_base()
class User(Base):
__tablename__ = "users"
id = Column(String, primary_key=True)
full_name = Column(String, nullable=False)
email = Column(String, unique=True, nullable=False)
hashed_password = Column(String, nullable=False)
position = Column(String, nullable=True)
role = Column(String, default="developer") # manager, developer, observer
two_factor_enabled = Column(Boolean, default=False)
biometric_enabled = Column(Boolean, default=False)
language = Column(String, default="ru")
timezone = Column(String, default="Asia/Almaty")
currency = Column(String, default="KZT")
avatar_url = Column(String, nullable=True)
created_at = Column(DateTime, default=datetime.utcnow)
tasks = relationship("Task", back_populates="assignee", foreign_keys="Task.assignee_id")
class Project(Base):
__tablename__ = "projects"
id = Column(String, primary_key=True)
name = Column(String, nullable=False)
description = Column(Text, default="")
start_date = Column(DateTime, nullable=False)
end_date = Column(DateTime, nullable=False)
budget = Column(Float, default=0.0)
spent = Column(Float, default=0.0)
status = Column(String, default="active") # active, paused, completed, archived
progress = Column(Float, default=0.0)
risk_level = Column(String, default="green") # green, yellow, red
owner_id = Column(String, ForeignKey("users.id"), nullable=True)
created_at = Column(DateTime, default=datetime.utcnow)
tasks = relationship("Task", back_populates="project", cascade="all, delete-orphan")
expenses = relationship("Expense", back_populates="project", cascade="all, delete-orphan")
documents = relationship("Document", back_populates="project", cascade="all, delete-orphan")
members = relationship("ProjectMember", back_populates="project", cascade="all, delete-orphan")
forecast = relationship("AIForecast", back_populates="project", uselist=False, cascade="all, delete-orphan")
class ProjectMember(Base):
__tablename__ = "project_members"
id = Column(String, primary_key=True)
project_id = Column(String, ForeignKey("projects.id"), nullable=False)
user_id = Column(String, ForeignKey("users.id"), nullable=False)
role = Column(String, default="developer")
project = relationship("Project", back_populates="members")
class Task(Base):
__tablename__ = "tasks"
id = Column(String, primary_key=True)
title = Column(String, nullable=False)
description = Column(Text, default="")
project_id = Column(String, ForeignKey("projects.id"), nullable=False)
status = Column(String, default="todo") # todo, inProgress, review, done
priority = Column(String, default="medium") # low, medium, high, critical
assignee_id = Column(String, ForeignKey("users.id"), nullable=True)
assignee_name = Column(String, nullable=True)
deadline = Column(DateTime, nullable=True)
created_at = Column(DateTime, default=datetime.utcnow)
tags = Column(Text, default="") # comma-separated
project = relationship("Project", back_populates="tasks")
assignee = relationship("User", back_populates="tasks", foreign_keys=[assignee_id])
subtasks = relationship("SubTask", back_populates="task", cascade="all, delete-orphan")
comments = relationship("TaskComment", back_populates="task", cascade="all, delete-orphan")
class SubTask(Base):
__tablename__ = "subtasks"
id = Column(String, primary_key=True)
task_id = Column(String, ForeignKey("tasks.id"), nullable=False)
title = Column(String, nullable=False)
completed = Column(Boolean, default=False)
task = relationship("Task", back_populates="subtasks")
class TaskComment(Base):
__tablename__ = "task_comments"
id = Column(String, primary_key=True)
task_id = Column(String, ForeignKey("tasks.id"), nullable=False)
author_name = Column(String, nullable=False)
text = Column(Text, nullable=False)
created_at = Column(DateTime, default=datetime.utcnow)
task = relationship("Task", back_populates="comments")
class Expense(Base):
__tablename__ = "expenses"
id = Column(String, primary_key=True)
project_id = Column(String, ForeignKey("projects.id"), nullable=False)
title = Column(String, nullable=False)
amount = Column(Float, nullable=False)
category = Column(String, nullable=False) # personnel, infrastructure, software, ...
date = Column(DateTime, default=datetime.utcnow)
status = Column(String, default="pending") # pending, approved, rejected
receipt_url = Column(String, nullable=True)
description = Column(Text, nullable=True)
approved_by = Column(String, nullable=True)
created_at = Column(DateTime, default=datetime.utcnow)
project = relationship("Project", back_populates="expenses")
class Document(Base):
__tablename__ = "documents"
id = Column(String, primary_key=True)
name = Column(String, nullable=False)
project_id = Column(String, ForeignKey("projects.id"), nullable=False)
type = Column(String, nullable=False) # pdf, docx, xlsx, image
size_bytes = Column(Integer, default=0)
file_path = Column(String, nullable=True)
uploaded_by = Column(String, nullable=True)
is_favorite = Column(Boolean, default=False)
# AI OCR fields
extracted_text = Column(Text, nullable=True)
recognition_confidence = Column(Float, nullable=True)
detected_type = Column(String, nullable=True) # invoice, receipt, contract, spec
extracted_amount = Column(Float, nullable=True)
extracted_date = Column(DateTime, nullable=True)
extracted_supplier = Column(String, nullable=True)
uploaded_at = Column(DateTime, default=datetime.utcnow)
project = relationship("Project", back_populates="documents")
class AIForecast(Base):
__tablename__ = "ai_forecasts"
id = Column(String, primary_key=True)
project_id = Column(String, ForeignKey("projects.id"), unique=True, nullable=False)
current_spent = Column(Float, default=0.0)
planned_budget = Column(Float, default=0.0)
risk_level = Column(String, default="green")
overrun_probability = Column(Float, default=0.0)
optimistic_forecast = Column(Float, default=0.0)
realistic_forecast = Column(Float, default=0.0)
pessimistic_forecast = Column(Float, default=0.0)
recommendations = Column(Text, default="") # JSON list stored as text
generated_at = Column(DateTime, default=datetime.utcnow)
project = relationship("Project", back_populates="forecast")
class Notification(Base):
__tablename__ = "notifications"
id = Column(String, primary_key=True)
user_id = Column(String, ForeignKey("users.id"), nullable=True)
title = Column(String, nullable=False)
body = Column(Text, nullable=False)
type = Column(String, nullable=False) # task, expense, project, ai, document
is_read = Column(Boolean, default=False)
action_route = Column(String, nullable=True)
created_at = Column(DateTime, default=datetime.utcnow)
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