import os
import time
import logging
import subprocess
from typing import Tuple


class ODMProcessMonitor:
    """ODM进程监控器"""

    def __init__(self, max_retries: int = 3, mode: str = "快拼模式"):
        self.max_retries = max_retries
        self.logger = logging.getLogger('UAV_Preprocess.ODMMonitor')
        self.mode = mode

    def _check_success(self, grid_dir: str) -> bool:
        """检查ODM是否执行成功"""
        success_markers = ['odm_orthophoto', 'odm_georeferencing']
        if self.mode != "快拼模式":
            success_markers.append('odm_texturing')
        return all(os.path.exists(os.path.join(grid_dir, 'project', marker)) for marker in success_markers)

    def run_odm_with_monitor(self, grid_dir: str, grid_idx: int, fast_mode: bool = True) -> Tuple[bool, str]:
        """运行ODM命令"""
        attempt = 0
        while attempt < self.max_retries:
            try:
                self.logger.info(f"网格 {grid_idx + 1} 第 {attempt + 1} 次尝试")
                
                # 构建基础命令
                cmd = [
                    "docker", "run", "--rm",
                    "-v", f"{grid_dir}:/datasets",
                    "opendronemap/odm",
                    "--project-path", "/datasets", "project",
                    "--max-concurrency", "10",
                    "--force-gps",
                    "--rerun-all"
                ]

                # 快速模式额外参数
                if fast_mode:
                    cmd.extend([
                        "--feature-quality", "lowest",
                        "--orthophoto-resolution", "8",
                        "--fast-orthophoto",
                        "--skip-3dmodel"
                    ])

                # 执行命令，不捕获输出
                result = subprocess.run(
                    cmd,
                    stdout=subprocess.DEVNULL,
                    stderr=subprocess.PIPE,
                    text=True
                )

                # 检查执行结果
                if result.returncode == 0 and self._check_success(grid_dir):
                    self.logger.info(f"网格 {grid_idx + 1} ODM处理成功")
                    return True, ""
                
                # 只在失败时记录错误信息
                if result.returncode != 0:
                    self.logger.error(f"网格 {grid_idx + 1} 执行失败，错误信息：{result.stderr[-500:]}")

            except Exception as e:
                error_msg = f"执行异常: {str(e)}"
                self.logger.error(error_msg)
                return False, error_msg

            attempt += 1
            if attempt < self.max_retries:
                time.sleep(30)

        error_msg = f"网格 {grid_idx + 1} 在 {self.max_retries} 次尝试后仍然失败"
        self.logger.error(error_msg)
        return False, error_msg