#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
任务版本模型模块
包含任务版本相关的数据模型
"""

from sqlalchemy import Column, Integer, String, Text, Boolean, ForeignKey, JSON
from sqlalchemy.orm import relationship
from data.models.base import BaseModel

class TaskVersion(BaseModel):
    """
    任务版本模型
    表示任务的一个版本
    """
    __tablename__ = 'task_versions'

    task_id = Column(Integer, ForeignKey('tasks.id'), nullable=False, comment='任务ID')
    version = Column(String(20), nullable=False, comment='版本号')
    content = Column(JSON, nullable=True, comment='任务内容（JSON格式）')
    flow_data = Column(JSON, nullable=True, comment='流程数据（JSON格式）')
    remark = Column(String(500), nullable=True, comment='版本备注')
    source_code = Column(Text, nullable=True, comment='生成的源代码')
    source_code_type = Column(String(20), default='javascript', comment='源代码类型')
    is_compiled = Column(Boolean, default=False, comment='是否已编译')
    compiled_code = Column(Text, nullable=True, comment='编译后的代码')
    created_by = Column(String(100), nullable=True, comment='创建用户ID')
    
    # 关联关系
    task = relationship('Task', back_populates='versions')
    flow_blocks = relationship('TaskFlowBlock', back_populates='version')
    
    def __repr__(self):
        return f"<TaskVersion(id={self.id}, task_id={self.task_id}, version='{self.version}')>"
    
    @classmethod
    def get_latest_version(cls, task_id):
        """
        获取任务的最新版本
        """
        return cls.query.filter(
            cls.task_id == task_id, 
            cls.is_deleted == False
        ).order_by(cls.created_at.desc()).first()
    
    @classmethod
    def create_version(cls, task_id, content, flow_data=None, remark=None, source_code=None, created_by=None):
        """
        创建新版本
        """
        from config.database import db_session
        
        # 获取任务
        from data.models.task import Task
        task = Task.query.get(task_id)
        if not task or task.is_deleted:
            return None
        
        # 获取最新版本号
        latest_version = cls.get_latest_version(task_id)
        if latest_version:
            # 版本号加0.1
            try:
                version_num = float(latest_version.version) + 0.1
                version = f"{version_num:.1f}"
            except ValueError:
                # 如果版本号不是数字格式，则使用时间戳
                import time
                version = str(int(time.time()))
        else:
            # 第一个版本
            version = "1.0"
        
        # 创建新版本
        version_obj = cls(
            task_id=task_id,
            version=version,
            content=content,
            flow_data=flow_data,
            remark=remark,
            source_code=source_code,
            created_by=created_by
        )
        
        db_session.add(version_obj)
        db_session.commit()
        
        # 更新任务的当前版本
        task.current_version_id = version_obj.id
        task.updated_by = created_by
        db_session.commit()
        
        # 记录用户操作
        from data.models.user_operation import UserOperation, OperationType, TargetType
        if created_by:
            UserOperation.log_operation(
                user_id=created_by,
                user_name=None,  # 用户名称需要从外部系统获取
                operation_type=OperationType.CREATE,
                target_type=TargetType.TASK_VERSION,
                target_id=version_obj.id,
                target_name=f"{task.name} v{version}",
                operation_details={
                    'task_id': task_id,
                    'version': version,
                    'remark': remark
                }
            )
        
        return version_obj
    
    def update_source_code(self, source_code, source_code_type='javascript', updated_by=None):
        """
        更新源代码
        """
        from config.database import db_session
        
        self.source_code = source_code
        self.source_code_type = source_code_type
        self.is_compiled = False  # 重置编译状态
        self.compiled_code = None
        
        db_session.commit()
        
        # 记录用户操作
        from data.models.user_operation import UserOperation, OperationType, TargetType
        if updated_by:
            UserOperation.log_operation(
                user_id=updated_by,
                user_name=None,  # 用户名称需要从外部系统获取
                operation_type=OperationType.UPDATE,
                target_type=TargetType.TASK_VERSION,
                target_id=self.id,
                target_name=f"{self.task.name} v{self.version}",
                operation_details={
                    'action': 'update_source_code',
                    'source_code_type': source_code_type
                }
            )
        
        return self