import re
import traceback
from loguru import logger

class DrGraphSession:
    def __init__(self, stepIndex: int, msg: str, session_id: str):
        logger.info(f"DrGraphSession.__init__: stepIndex={stepIndex}, msg={msg}, session_id={session_id}")
        self.stepIndex = stepIndex
        self.session_id = session_id
        
        match = re.search(r";(-\d+)", msg);
        level = -3
        if match:
            level = int(match.group(1))
            value = value.replace(f";{level}", "")
            level = -3 + level                
        
        if "警告" in value or value.startswith("WARNING"):
            self.log_warning(f"第 {self.stepIndex} 步 - {value}", level = level)
        elif "异常" in value or value.startswith("EXCEPTION"):
            self.log_exception(f"第 {self.stepIndex} 步 - {value}", level = level)
        elif "成功" in value or value.startswith("SUCCESS"):
            self.log_success(f"第 {self.stepIndex} 步 - {value}", level = level)
        elif "开始" in value or value.startswith("START"):
            self.log_success(f"第 {self.stepIndex} 步 - {value}", level = level)
        elif "失败" in value or value.startswith("ERROR"):
            self.log_error(f"第 {self.stepIndex} 步 - {value}", level = level)
        else:
            self.log_info(f"第 {self.stepIndex} 步 - {value}", level = level)
    
    def log_prefix(self) -> str:
        """Get log prefix with session ID and desc."""
        return f"〖Session{self.session_id}〗"
    
    def parse_source_pos(self, level: int):
        pos = (traceback.format_stack())[level - 1].strip().split('\n')[0]
        match = re.search(r"File \"(.+?)\", line (\d+), in (\w+)", pos);
        if match:
            file = match.group(1).replace("F:\\DrGraph_Python\\FastAPI\\", "")
            pos = f"{file}:{match.group(2)} in {match.group(3)}"
        return pos
    
    def log_info(self, msg: str, level: int = -2):
        """Log info message with session ID."""
        pos = self.parse_source_pos(level)
        logger.info(f"{self.log_prefix()} {msg} >>> @ {pos}")
    
    def log_success(self, msg: str, level: int = -2):
        """Log success message with session ID."""
        pos = self.parse_source_pos(level)
        logger.success(f"{self.log_prefix()} {msg} >>> @ {pos}")
    
    def log_warning(self, msg: str, level: int = -2):
        """Log warning message with session ID."""
        pos = self.parse_source_pos(level)
        logger.warning(f"{self.log_prefix()} {msg} >>> @ {pos}")
    
    def log_error(self, msg: str, level: int = -2):
        """Log error message with session ID."""      
        pos = self.parse_source_pos(level)
        logger.error(f"{self.log_prefix()} {msg} >>> @ {pos}")
    
    def log_exception(self, msg: str, level: int = -2):
        """Log exception message with session ID."""
        pos = self.parse_source_pos(level)
        logger.exception(f"{self.log_prefix()} {msg} >>> @ {pos}")