from smolagents import (
    CodeAgent,
    DuckDuckGoSearchTool,
    HfApiModel,
    load_tool,
    tool,
    FinalAnswerTool,
    GradioUI,
)

import datetime
import pytz
import yaml


# =========================
# 自定义工具 1：示例工具
# =========================
@tool
def my_custom_tool(arg1: str, arg2: int) -> str:
    """A simple custom tool example.

    Args:
        arg1: The first argument.
        arg2: The second argument.
    """
    return f"You passed arg1={arg1}, arg2={arg2}."


# =========================
# 自定义工具 2：查询指定时区当前时间
# =========================
@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetch the current local time in a specified timezone.

    Args:
        timezone: A valid timezone string, for example 'Asia/Shanghai', 'Asia/Tokyo', or 'America/New_York'.
    """
    try:
        tz = pytz.timezone(timezone)
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"The current local time in {timezone} is: {local_time}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"


# =========================
# 最终答案工具
# =========================
final_answer = FinalAnswerTool()


# =========================
# 模型配置
# =========================
model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id="Qwen/Qwen2.5-Coder-32B-Instruct",
    custom_role_conversions=None,
)


# =========================
# 从 Hugging Face Hub 加载图片生成工具
# =========================
image_generation_tool = load_tool(
    "agents-course/text-to-image",
    trust_remote_code=True,
)


# =========================
# 读取 prompts.yaml
# =========================
with open("prompts.yaml", "r", encoding="utf-8") as stream:
    prompt_templates = yaml.safe_load(stream)


# =========================
# 创建 Agent
# =========================
agent = CodeAgent(
    model=model,
    tools=[
        final_answer,
        image_generation_tool,
        get_current_time_in_timezone,
        my_custom_tool,
        DuckDuckGoSearchTool(),
    ],
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates,
)


# =========================
# 启动 Gradio 页面
# =========================
GradioUI(agent).launch()