"""
Egregore Brain - Conversation processing with tool use loop
"""

import json
import uuid
from typing import Any

import anthropic

from tools import TOOLS, execute_tool
from prompts import get_system_prompt


def extract_embedded_tool_calls(text: str) -> tuple[list, str]:
    """
    Detect if text contains JSON-encoded tool calls and extract them.
    Returns (tool_calls, remaining_text) where tool_calls is a list of parsed
    tool_use dicts if found, or empty list if not.
    """
    if not text or not text.strip().startswith('['):
        return [], text

    try:
        parsed = json.loads(text.strip())
        if isinstance(parsed, list) and len(parsed) > 0:
            if all(isinstance(b, dict) and b.get('type') in ('tool_use', 'tool_result', 'text') for b in parsed):
                tool_calls = [b for b in parsed if b.get('type') == 'tool_use']
                if tool_calls:
                    return tool_calls, ""
    except (json.JSONDecodeError, TypeError):
        pass

    return [], text


def serialize_content_blocks(blocks) -> list:
    """Convert Claude API blocks to JSON-serializable format"""
    result = []
    for block in blocks:
        if hasattr(block, 'type'):
            if block.type == "text":
                embedded_tools, remaining = extract_embedded_tool_calls(block.text)
                if embedded_tools:
                    for tool in embedded_tools:
                        result.append(tool)
                elif remaining:
                    result.append({"type": "text", "content": remaining})
            elif block.type == "tool_use":
                result.append({
                    "type": "tool_use",
                    "id": block.id,
                    "name": block.name,
                    "input": block.input
                })
        elif isinstance(block, dict):
            result.append(block)
    return result


def extract_text_from_blocks(blocks) -> str:
    """Extract plain text for notifications etc"""
    texts = []
    for block in blocks:
        if hasattr(block, 'type') and block.type == "text":
            texts.append(block.text)
        elif isinstance(block, dict) and block.get("type") == "text":
            texts.append(block.get("content", ""))
    return "\n".join(texts)


async def process_conversation(
    client: anthropic.AsyncAnthropic,
    model: str,
    history: list[dict],
    max_iterations: int = 10
) -> list[dict]:
    """
    Process a conversation with tool use loop.

    Args:
        client: Async Anthropic client
        model: Model ID to use
        history: Conversation history in Claude API format
        max_iterations: Maximum tool use iterations

    Returns:
        List of response blocks (text, tool_use, tool_result)
    """
    system_prompt = await get_system_prompt()
    all_response_blocks = []

    for _ in range(max_iterations):
        response = await client.messages.create(
            model=model,
            max_tokens=4096,
            system=system_prompt,
            messages=history,
            tools=TOOLS
        )

        tool_uses = []
        embedded_tool_calls = []

        for block in response.content:
            if block.type == "tool_use":
                tool_uses.append(block)
                all_response_blocks.append({
                    "type": "tool_use",
                    "id": block.id,
                    "name": block.name,
                    "input": block.input
                })
            elif block.type == "text":
                embedded, remaining = extract_embedded_tool_calls(block.text)
                if embedded:
                    embedded_tool_calls.extend(embedded)
                    for tool in embedded:
                        all_response_blocks.append(tool)
                elif remaining:
                    all_response_blocks.append({
                        "type": "text",
                        "content": remaining
                    })

        if not tool_uses and not embedded_tool_calls:
            break

        # Handle embedded tool calls (model misbehavior - output JSON as text)
        if embedded_tool_calls and not tool_uses:
            embedded_results = []
            for idx, tool_call in enumerate(embedded_tool_calls):
                tool_id = tool_call.get("id", f"embedded_{idx}")
                tool_name = tool_call.get("name")
                tool_input = tool_call.get("input", {})

                if tool_name:
                    result = await execute_tool(tool_name, tool_input)
                    embedded_results.append({
                        "type": "tool_result",
                        "tool_use_id": tool_id,
                        "content": result
                    })
                    all_response_blocks.append({
                        "type": "tool_result",
                        "tool_use_id": tool_id,
                        "tool_name": tool_name,
                        "content": result
                    })

            if embedded_results:
                history.append({"role": "assistant", "content": response.content})
                history.append({"role": "user", "content": embedded_results})
            continue

        # Execute tools and add results to history
        tool_results = []
        for tool_use in tool_uses:
            result = await execute_tool(tool_use.name, tool_use.input)
            tool_results.append({
                "type": "tool_result",
                "tool_use_id": tool_use.id,
                "content": result
            })
            all_response_blocks.append({
                "type": "tool_result",
                "tool_use_id": tool_use.id,
                "tool_name": tool_use.name,
                "content": result
            })

        history.append({"role": "assistant", "content": response.content})
        history.append({"role": "user", "content": tool_results})

    return all_response_blocks