import asyncio
import json
from datetime import datetime
from pathlib import Path
from typing import Any, Dict, List, Optional, Set

try:
    from config import (
        OUTPUT_FORMATS, DATA_DIR, PROMPTS_DIR, NEED_CONFIRMATION,
        MAX_TERMINALS, TERMINAL_BUFFER_SIZE, TERMINAL_DISPLAY_SIZE,
        MAX_READ_FILE_CHARS, READ_TOOL_DEFAULT_MAX_CHARS,
        READ_TOOL_DEFAULT_CONTEXT_BEFORE, READ_TOOL_DEFAULT_CONTEXT_AFTER,
        READ_TOOL_MAX_CONTEXT_BEFORE, READ_TOOL_MAX_CONTEXT_AFTER,
        READ_TOOL_DEFAULT_MAX_MATCHES, READ_TOOL_MAX_MATCHES,
        READ_TOOL_MAX_FILE_SIZE,
        TERMINAL_SANDBOX_MOUNT_PATH,
        TERMINAL_SANDBOX_MODE,
        TERMINAL_SANDBOX_CPUS,
        TERMINAL_SANDBOX_MEMORY,
        PROJECT_MAX_STORAGE_MB,
        CUSTOM_TOOLS_ENABLED,
    )
except ImportError:
    import sys
    project_root = Path(__file__).resolve().parents[2]
    if str(project_root) not in sys.path:
        sys.path.insert(0, str(project_root))
    from config import (
        OUTPUT_FORMATS, DATA_DIR, PROMPTS_DIR, NEED_CONFIRMATION,
        MAX_TERMINALS, TERMINAL_BUFFER_SIZE, TERMINAL_DISPLAY_SIZE,
        MAX_READ_FILE_CHARS, READ_TOOL_DEFAULT_MAX_CHARS,
        READ_TOOL_DEFAULT_CONTEXT_BEFORE, READ_TOOL_DEFAULT_CONTEXT_AFTER,
        READ_TOOL_MAX_CONTEXT_BEFORE, READ_TOOL_MAX_CONTEXT_AFTER,
        READ_TOOL_DEFAULT_MAX_MATCHES, READ_TOOL_MAX_MATCHES,
        READ_TOOL_MAX_FILE_SIZE,
        TERMINAL_SANDBOX_MOUNT_PATH,
        TERMINAL_SANDBOX_MODE,
        TERMINAL_SANDBOX_CPUS,
        TERMINAL_SANDBOX_MEMORY,
        PROJECT_MAX_STORAGE_MB,
        CUSTOM_TOOLS_ENABLED,
    )

from modules.file_manager import FileManager
from modules.search_engine import SearchEngine
from modules.terminal_ops import TerminalOperator
from modules.memory_manager import MemoryManager
from modules.terminal_manager import TerminalManager
from modules.todo_manager import TodoManager
from modules.sub_agent_manager import SubAgentManager
from modules.webpage_extractor import extract_webpage_content, tavily_extract
from modules.ocr_client import OCRClient
from modules.easter_egg_manager import EasterEggManager
from modules.personalization_manager import (
    load_personalization_config,
    build_personalization_prompt,
)
from modules.skills_manager import (
    get_skills_catalog,
    build_skills_list,
    merge_enabled_skills,
    build_skills_prompt,
)
from modules.custom_tool_registry import CustomToolRegistry, build_default_tool_category
from modules.custom_tool_executor import CustomToolExecutor

try:
    from config.limits import THINKING_FAST_INTERVAL
except ImportError:
    THINKING_FAST_INTERVAL = 10

from modules.container_monitor import collect_stats, inspect_state
from core.tool_config import TOOL_CATEGORIES
from utils.api_client import DeepSeekClient
from utils.context_manager import ContextManager
from utils.tool_result_formatter import format_tool_result_for_context
from utils.logger import setup_logger
from config.model_profiles import (
    get_model_profile,
    get_model_prompt_replacements,
    get_model_context_window,
)

logger = setup_logger(__name__)
DISABLE_LENGTH_CHECK = True

class MainTerminalToolsReadMixin:
    @staticmethod
    def _clamp_int(value, default, min_value=None, max_value=None):
                """将输入转换为整数并限制范围。"""
                if value is None:
                    return default
                try:
                    num = int(value)
                except (TypeError, ValueError):
                    return default
                if min_value is not None:
                    num = max(min_value, num)
                if max_value is not None:
                    num = min(max_value, num)
                return num

    @staticmethod
    def _parse_optional_line(value, field_name: str):
                """解析可选的行号参数。"""
                if value is None:
                    return None, None
                try:
                    number = int(value)
                except (TypeError, ValueError):
                    return None, f"{field_name} 必须是整数"
                if number < 1:
                    return None, f"{field_name} 必须大于等于1"
                return number, None

    @staticmethod
    def _truncate_text_block(text: str, max_chars: int):
                """对单段文本应用字符限制。"""
                if max_chars and len(text) > max_chars:
                    return text[:max_chars], True, max_chars
                return text, False, len(text)

    @staticmethod
    def _limit_text_chunks(chunks: List[Dict], text_key: str, max_chars: int):
                """对多个文本片段应用全局字符限制。"""
                if max_chars is None or max_chars <= 0:
                    return chunks, False, sum(len(chunk.get(text_key, "") or "") for chunk in chunks)

                remaining = max_chars
                limited_chunks: List[Dict] = []
                truncated = False
                consumed = 0

                for chunk in chunks:
                    snippet = chunk.get(text_key, "") or ""
                    snippet_len = len(snippet)
                    chunk_copy = dict(chunk)

                    if remaining <= 0:
                        truncated = True
                        break

                    if snippet_len > remaining:
                        chunk_copy[text_key] = snippet[:remaining]
                        chunk_copy["truncated"] = True
                        consumed += remaining
                        limited_chunks.append(chunk_copy)
                        truncated = True
                        remaining = 0
                        break

                    limited_chunks.append(chunk_copy)
                    consumed += snippet_len
                    remaining -= snippet_len

                return limited_chunks, truncated, consumed

    def _handle_read_tool(self, arguments: Dict) -> Dict:
                """集中处理 read_file 工具的三种模式。"""
                file_path = arguments.get("path")
                if not file_path:
                    return {"success": False, "error": "缺少文件路径参数"}

                read_type = (arguments.get("type") or "read").lower()
                if read_type not in {"read", "search", "extract"}:
                    return {"success": False, "error": f"未知的读取类型: {read_type}"}

                max_chars = self._clamp_int(
                    arguments.get("max_chars"),
                    READ_TOOL_DEFAULT_MAX_CHARS,
                    1,
                    MAX_READ_FILE_CHARS
                )

                base_result = {
                    "success": True,
                    "type": read_type,
                    "path": None,
                    "encoding": "utf-8",
                    "max_chars": max_chars,
                    "truncated": False
                }

                if read_type == "read":
                    start_line, error = self._parse_optional_line(arguments.get("start_line"), "start_line")
                    if error:
                        return {"success": False, "error": error}
                    end_line_val = arguments.get("end_line")
                    end_line = None
                    if end_line_val is not None:
                        end_line, error = self._parse_optional_line(end_line_val, "end_line")
                        if error:
                            return {"success": False, "error": error}
                        if start_line and end_line < start_line:
                            return {"success": False, "error": "end_line 必须大于等于 start_line"}

                    read_result = self.file_manager.read_text_segment(
                        file_path,
                        start_line=start_line,
                        end_line=end_line,
                        size_limit=READ_TOOL_MAX_FILE_SIZE
                    )
                    if not read_result.get("success"):
                        return read_result

                    content, truncated, char_count = self._truncate_text_block(read_result["content"], max_chars)
                    base_result.update({
                        "path": read_result["path"],
                        "content": content,
                        "line_start": read_result["line_start"],
                        "line_end": read_result["line_end"],
                        "total_lines": read_result["total_lines"],
                        "file_size": read_result["size"],
                        "char_count": char_count,
                        "message": f"已读取 {read_result['path']} 的内容（行 {read_result['line_start']}~{read_result['line_end']}）"
                    })
                    base_result["truncated"] = truncated
                    self.context_manager.load_file(read_result["path"])
                    return base_result

                if read_type == "search":
                    query = arguments.get("query")
                    if not query:
                        return {"success": False, "error": "搜索模式需要提供 query 参数"}

                    max_matches = self._clamp_int(
                        arguments.get("max_matches"),
                        READ_TOOL_DEFAULT_MAX_MATCHES,
                        1,
                        READ_TOOL_MAX_MATCHES
                    )
                    context_before = self._clamp_int(
                        arguments.get("context_before"),
                        READ_TOOL_DEFAULT_CONTEXT_BEFORE,
                        0,
                        READ_TOOL_MAX_CONTEXT_BEFORE
                    )
                    context_after = self._clamp_int(
                        arguments.get("context_after"),
                        READ_TOOL_DEFAULT_CONTEXT_AFTER,
                        0,
                        READ_TOOL_MAX_CONTEXT_AFTER
                    )
                    case_sensitive = bool(arguments.get("case_sensitive"))

                    search_result = self.file_manager.search_text(
                        file_path,
                        query=query,
                        max_matches=max_matches,
                        context_before=context_before,
                        context_after=context_after,
                        case_sensitive=case_sensitive,
                        size_limit=READ_TOOL_MAX_FILE_SIZE
                    )
                    if not search_result.get("success"):
                        return search_result

                    matches = search_result["matches"]
                    limited_matches, truncated, char_count = self._limit_text_chunks(matches, "snippet", max_chars)

                    base_result.update({
                        "path": search_result["path"],
                        "file_size": search_result["size"],
                        "query": query,
                        "max_matches": max_matches,
                        "actual_matches": len(matches),
                        "returned_matches": len(limited_matches),
                        "context_before": context_before,
                        "context_after": context_after,
                        "case_sensitive": case_sensitive,
                        "matches": limited_matches,
                        "char_count": char_count,
                        "message": f"在 {search_result['path']} 中搜索 \"{query}\"，返回 {len(limited_matches)} 条结果"
                    })
                    base_result["truncated"] = truncated
                    return base_result

                # extract
                segments = arguments.get("segments")
                if not isinstance(segments, list) or not segments:
                    return {"success": False, "error": "extract 模式需要提供 segments 数组"}

                extract_result = self.file_manager.extract_segments(
                    file_path,
                    segments=segments,
                    size_limit=READ_TOOL_MAX_FILE_SIZE
                )
                if not extract_result.get("success"):
                    return extract_result

                limited_segments, truncated, char_count = self._limit_text_chunks(
                    extract_result["segments"],
                    "content",
                    max_chars
                )

                base_result.update({
                    "path": extract_result["path"],
                    "segments": limited_segments,
                    "file_size": extract_result["size"],
                    "total_lines": extract_result["total_lines"],
                    "segment_count": len(limited_segments),
                    "char_count": char_count,
                    "message": f"已从 {extract_result['path']} 抽取 {len(limited_segments)} 个片段"
                })
                base_result["truncated"] = truncated
                self.context_manager.load_file(extract_result["path"])
                return base_result