from fastapi import APIRouter, HTTPException

from core.speech_service import inspect_speech_model_status
from core.utils import _get_default_system_timezone
from schemas.system import SystemTemplatesUpdateRequest
from services.platform_settings_service import get_platform_settings_snapshot, get_speech_runtime_settings
from services.template_service import (
    get_agent_md_templates,
    get_topic_presets,
    update_agent_md_templates,
    update_topic_presets,
)

router = APIRouter()

@router.get("/api/system/defaults")
def get_system_defaults():
    md_templates = get_agent_md_templates()
    platform_settings = get_platform_settings_snapshot()
    speech_settings = get_speech_runtime_settings()
    model_status = inspect_speech_model_status()
    return {
        "templates": md_templates,
        "limits": {
            "upload_max_mb": platform_settings.upload_max_mb,
        },
        "workspace": {
            "download_extensions": list(platform_settings.workspace_download_extensions),
            "allowed_attachment_extensions": list(platform_settings.allowed_attachment_extensions),
        },
        "bot": {
            "system_timezone": _get_default_system_timezone(),
        },
        "chat": {
            "pull_page_size": platform_settings.chat_pull_page_size,
            "page_size": platform_settings.page_size,
            "command_auto_unlock_seconds": platform_settings.command_auto_unlock_seconds,
        },
        "topic_presets": get_topic_presets()["presets"],
        "speech": {
            "enabled": speech_settings["enabled"],
            "model": speech_settings["model"],
            "device": speech_settings["device"],
            "max_audio_seconds": speech_settings["max_audio_seconds"],
            "default_language": speech_settings["default_language"],
            "ready": model_status["ready"],
            "message": model_status["message"],
            "expected_path": model_status["expected_path"],
        },
    }

@router.get("/api/system/templates")
def get_system_templates():
    return {
        "agent_md_templates": get_agent_md_templates(),
        "topic_presets": get_topic_presets(),
    }

@router.put("/api/system/templates")
def update_system_templates(payload: SystemTemplatesUpdateRequest):
    if payload.agent_md_templates is not None:
        update_agent_md_templates(payload.agent_md_templates.model_dump())

    if payload.topic_presets is not None:
        try:
            update_topic_presets(payload.topic_presets)
        except ValueError as exc:
            raise HTTPException(status_code=400, detail=str(exc)) from exc

    return {
        "status": "ok",
        "agent_md_templates": get_agent_md_templates(),
        "topic_presets": get_topic_presets(),
    }