from flask import Flask, request, jsonify

app = Flask(__name__)
@app.route('/calculate_jt_time', methods=['POST'])
def calculate_jt_time():
    try:
        # 解析 JSON 数据
        data = request.get_json()

        # 提取参数
        m_ice = data.get("m_ice", 0)  # 冰的质量 (kg)
        c_ice = data.get("c_ice", 0)  # 冰的比热容 (J/kg·K)
        delta_T_initial = data.get("delta_T_initial", 0)  # 初始温差 (K)
        L = data.get("L", 0)  # 冰的熔化潜热 (J/kg)
        m_coke = data.get("m_coke", 0)  # 焦炭质量 (kg)
        c_coke = data.get("c_coke", 0)  # 焦炭的比热容 (J/kg·K)
        h = data.get("h", 0)  # 对流换热系数 (W/m²·K)
        A = data.get("A", 0)  # 有效传热面积 (m²)
        delta_T_heat = data.get("delta_T_heat", 0)  # 热风温差 (K)

        # 计算总热量需求
        Q_ice = m_ice * (c_ice * delta_T_initial + L)
        Q_coke = m_coke * c_coke * delta_T_initial
        Q_total = Q_ice + Q_coke

        # 计算总热传递能力
        Q_transfer = h * A * delta_T_heat

        # 避免除零错误
        if Q_transfer == 0:
            return jsonify({"error": "Heat transfer capacity is zero, invalid input."}), 400

        # 计算时间 (秒)
        t_seconds = Q_total / Q_transfer

        # 转换为小时
        t_hours = t_seconds / 3600

        print("焦炭解冻时间为 ", t_hours)

        return jsonify({"t_total": round(t_hours, 2)})
    except Exception as e:
        return jsonify({"error": str(e)}), 500


if __name__ == '__main__':
    app.run(host='127.0.0.1', port=9995, debug=True)