"""
agent_tools.py — Facade module.

Re-exports tool parsing, schemas, execution, and implementations
for backward compatibility. All importers continue to work unchanged.

Sub-modules:
  - tool_parsing.py: regex patterns, parse/strip functions
  - tool_schemas.py: FUNCTION_TOOL_SCHEMAS, function_call_to_tool_block
  - tool_execution.py: execute_tool_block, format_tool_result, MCP helpers
  - tool_implementations.py: all do_* tool functions
"""

import logging
from collections import namedtuple

logger = logging.getLogger(__name__)

# ---------------------------------------------------------------------------
# Constants (kept here — sub-modules import from here)
# ---------------------------------------------------------------------------
MAX_AGENT_ROUNDS = 20
SHELL_TIMEOUT = 60
PYTHON_TIMEOUT = 30
MAX_OUTPUT_CHARS = 10_000
MAX_READ_CHARS = 20_000

# Tool types that trigger execution
TOOL_TAGS = {"bash", "python", "web_search", "web_fetch", "read_file", "write_file",
             "create_document", "update_document", "edit_document",
             "search_chats",
             "chat_with_model", "create_session", "list_sessions",
             "send_to_session",
             "pipeline",
             "manage_session", "manage_memory", "list_models",
             "ui_control", "generate_image",
             "manage_tasks", "api_call", "ask_teacher", "manage_skills",
             "suggest_document",
             "manage_endpoints", "manage_mcp", "manage_webhooks",
             "manage_tokens", "manage_documents", "manage_settings",
             "manage_notes", "manage_calendar",
             "resolve_contact", "manage_contact", "list_email_accounts", "send_email", "list_emails",
             "read_email", "reply_to_email", "bulk_email", "archive_email",
             "delete_email", "mark_email_read",
             # Cookbook tools (LLM serving + downloads). Without these
             # entries, native function calls to e.g. list_served_models
             # are rejected as "Unknown function call" before reaching
             # the dispatcher — silent failure for the whole cookbook
             # surface.
             "download_model", "serve_model",
             "list_served_models", "stop_served_model",
             "list_downloads", "cancel_download",
             "search_hf_models", "list_cached_models",
             "list_serve_presets", "serve_preset", "adopt_served_model",
             "list_cookbook_servers",
             # Other tools the agent reaches for that were also missing.
             "edit_image", "trigger_research", "manage_research",
             # Generic loopback to any UI-button endpoint (cookbook,
             # gallery, email folders, etc.) — agent uses this when
             # there's no named tool wrapper for the action.
             "app_api"}

ToolBlock = namedtuple("ToolBlock", ["tool_type", "content"])

# ---------------------------------------------------------------------------
# MCP Manager (kept here — used by execution and agent_loop)
# ---------------------------------------------------------------------------
_mcp_manager = None

def set_mcp_manager(manager):
    """Set the global MCP manager instance."""
    global _mcp_manager
    _mcp_manager = manager

def get_mcp_manager():
    """Get the global MCP manager instance."""
    return _mcp_manager

# ---------------------------------------------------------------------------
# Helpers (kept here — used by sub-modules)
# ---------------------------------------------------------------------------
def _truncate(text: str, limit: int = MAX_OUTPUT_CHARS) -> str:
    if len(text) > limit:
        return text[:limit] + f"\n... (truncated, {len(text)} chars total)"
    return text

# ---------------------------------------------------------------------------
# Re-exports from sub-modules
# ---------------------------------------------------------------------------

# Parsing
from src.tool_parsing import (  # noqa: E402, F401
    parse_tool_blocks,
    strip_tool_blocks,
    _TOOL_NAME_MAP,
    _TOOL_BLOCK_RE,
    _TOOL_CALL_RE,
    _XML_TOOL_CALL_RE,
    _XML_INVOKE_RE,
    _XML_PARAM_RE,
)

# Schemas
from src.tool_schemas import (  # noqa: E402, F401
    FUNCTION_TOOL_SCHEMAS,
    function_call_to_tool_block,
)

# Execution
from src.tool_execution import (  # noqa: E402, F401
    execute_tool_block,
    format_tool_result,
)

# Implementations
from src.tool_implementations import (  # noqa: E402, F401
    set_active_document,
    set_active_model,
    get_active_document,
    do_create_document,
    do_update_document,
    do_edit_document,
    do_suggest_document,
    do_search_chats,
    do_manage_skills,
    do_manage_tasks,
    do_manage_endpoints,
    do_manage_mcp,
    do_manage_webhooks,
    do_manage_tokens,
    do_manage_documents,
    do_manage_settings,
    do_api_call,
)
