"""
SQLAlchemy ORM models for Foxy Dev Team.
"""

import enum
from datetime import datetime, timezone
from typing import Optional, List

from sqlalchemy import (
    String, Text, Integer, DateTime, ForeignKey, Enum, JSON
)
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database import Base


# ─── Enums ─────────────────────────────────────────────────────────────────────


class ProjectStatus(str, enum.Enum):
    PENDING = "PENDING"
    AWAITING_CONDUCTOR = "AWAITING_CONDUCTOR"
    CONDUCTOR_RUNNING = "CONDUCTOR_RUNNING"
    AWAITING_ARCHITECT = "AWAITING_ARCHITECT"
    ARCHITECT_RUNNING = "ARCHITECT_RUNNING"
    AWAITING_DEV = "AWAITING_DEV"
    DEV_RUNNING = "DEV_RUNNING"
    AWAITING_UIUX = "AWAITING_UIUX"
    UIUX_RUNNING = "UIUX_RUNNING"
    AWAITING_QA = "AWAITING_QA"
    QA_RUNNING = "QA_RUNNING"
    AWAITING_DEPLOY = "AWAITING_DEPLOY"
    DEPLOY_RUNNING = "DEPLOY_RUNNING"
    COMPLETED = "COMPLETED"
    FAILED = "FAILED"
    PAUSED = "PAUSED"


class WorkflowType(str, enum.Enum):
    SOFTWARE_DESIGN = "SOFTWARE_DESIGN"
    SYSADMIN_DEBUG = "SYSADMIN_DEBUG"
    DEVOPS_SETUP = "DEVOPS_SETUP"
    SYSADMIN_ADJUST = "SYSADMIN_ADJUST"


class TaskStatus(str, enum.Enum):
    PENDING = "PENDING"
    IN_PROGRESS = "IN_PROGRESS"
    IN_REVIEW = "IN_REVIEW"
    REJECTED = "REJECTED"
    READY_FOR_DEPLOY = "READY_FOR_DEPLOY"
    DONE = "DONE"
    BLOCKED = "BLOCKED"


class TaskType(str, enum.Enum):
    BACKEND = "BACKEND"
    FRONTEND = "FRONTEND"
    INFRA = "INFRA"
    TEST = "TEST"
    DESIGN = "DESIGN"


class TaskPriority(str, enum.Enum):
    P1 = "P1"
    P2 = "P2"
    P3 = "P3"


class AgentExecutionStatus(str, enum.Enum):
    RUNNING = "RUNNING"
    SUCCESS = "SUCCESS"
    FAILED = "FAILED"
    TIMEOUT = "TIMEOUT"


def _utcnow() -> datetime:
    return datetime.now(timezone.utc)


# ─── Models ────────────────────────────────────────────────────────────────────


class Project(Base):
    __tablename__ = "projects"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    name: Mapped[str] = mapped_column(String(200), nullable=False)
    slug: Mapped[str] = mapped_column(String(200), unique=True, nullable=False, index=True)
    description: Mapped[str] = mapped_column(Text, default="")
    status: Mapped[ProjectStatus] = mapped_column(
        Enum(ProjectStatus), default=ProjectStatus.PENDING, nullable=False
    )
    workflow_type: Mapped[WorkflowType] = mapped_column(
        Enum(WorkflowType), default=WorkflowType.SOFTWARE_DESIGN, nullable=False
    )
    test_mode: Mapped[bool] = mapped_column(default=False)
    gitea_repo: Mapped[Optional[str]] = mapped_column(String(500), nullable=True)
    deployment_target: Mapped[Optional[str]] = mapped_column(String(200), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_utcnow)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=_utcnow, onupdate=_utcnow
    )

    # Relationships
    tasks: Mapped[List["Task"]] = relationship(
        back_populates="project", cascade="all, delete-orphan", lazy="selectin"
    )
    audit_logs: Mapped[List["AuditLog"]] = relationship(
        back_populates="project", cascade="all, delete-orphan", lazy="selectin"
    )
    agent_executions: Mapped[List["AgentExecution"]] = relationship(
        back_populates="project", cascade="all, delete-orphan", lazy="selectin"
    )


class Task(Base):
    __tablename__ = "tasks"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    project_id: Mapped[int] = mapped_column(ForeignKey("projects.id"), nullable=False)
    task_id: Mapped[str] = mapped_column(String(50), nullable=False)  # e.g. TASK-001
    type: Mapped[TaskType] = mapped_column(Enum(TaskType), default=TaskType.BACKEND)
    title: Mapped[str] = mapped_column(String(500), nullable=False)
    priority: Mapped[TaskPriority] = mapped_column(Enum(TaskPriority), default=TaskPriority.P3)
    assigned_to: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
    status: Mapped[TaskStatus] = mapped_column(
        Enum(TaskStatus), default=TaskStatus.PENDING, nullable=False
    )
    dependencies: Mapped[Optional[dict]] = mapped_column(JSON, default=list)
    acceptance_criteria: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    agent_payloads: Mapped[Optional[dict]] = mapped_column(JSON, default=dict)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_utcnow)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=_utcnow, onupdate=_utcnow
    )

    # Relationships
    project: Mapped["Project"] = relationship(back_populates="tasks")


class AgentExecution(Base):
    __tablename__ = "agent_executions"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    project_id: Mapped[int] = mapped_column(ForeignKey("projects.id"), nullable=False)
    agent_name: Mapped[str] = mapped_column(String(100), nullable=False)
    status: Mapped[AgentExecutionStatus] = mapped_column(
        Enum(AgentExecutionStatus), default=AgentExecutionStatus.RUNNING
    )
    pid: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
    started_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_utcnow)
    finished_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
    exit_code: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
    error_output: Mapped[Optional[str]] = mapped_column(Text, nullable=True)

    # Relationships
    project: Mapped["Project"] = relationship(back_populates="agent_executions")


class AuditLog(Base):
    __tablename__ = "audit_logs"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    project_id: Mapped[int] = mapped_column(ForeignKey("projects.id"), nullable=False)
    timestamp: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_utcnow)
    agent: Mapped[str] = mapped_column(String(100), nullable=False)
    action: Mapped[str] = mapped_column(String(100), nullable=False)
    target: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
    message: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    source: Mapped[str] = mapped_column(String(100), default="api")

    # Relationships
    project: Mapped["Project"] = relationship(back_populates="audit_logs")