import gradio as gr

# 已有的 Hugging Face Space 链接
CALCULATOR_URL = "https://huggingface.co/spaces/EricCRX/Upfront_Embodied_Carbon_Calculator"
PREDICTOR_URL = "https://huggingface.co/spaces/yl0628/co2-emission-proj1"  # 未来可替换为你的预测模型链接

with gr.Blocks(title="Unified Carbon Tools") as demo:
    gr.Markdown("# 🌍 Unified Carbon Tools")
    gr.Markdown("A central interface linking to multiple sustainability tools.")

    with gr.Tab("Calculator"):
        gr.Markdown("### 🔢 Upfront Embodied Carbon Calculator")
        gr.Markdown(
            f"[👉 Click here to open the Calculator]({CALCULATOR_URL})"
        )
        gr.Markdown(
            "This calculator estimates **A1–A5 upfront embodied carbon** "
            "for building materials and construction processes. It provides modular outputs (A1–A5) "
            "and total tCO₂e results for comparative design analysis."
        )

    with gr.Tab("Predictor"):
        gr.Markdown("### 📈 CO₂ Emission Predictor")
        gr.Markdown(
            f"[👉 Click here to open the Predictor]({PREDICTOR_URL})"
        )
        gr.Markdown(
            "This section will link to a **time-series ML model** that forecasts future CO₂ emissions "
            "based on historical data and model-inference pipelines."
        )

demo.launch()