"""GET /api/config.dspy — 获取/设置场景权重配置"""
import json
from songrate.scenes import get_scene_config, set_scene_config, SCENES

scene = params_kw.get('scene', '')

# POST: 设置权重
if params_kw.get('weights'):
    weights = params_kw['weights']
    if isinstance(weights, str):
        weights = json.loads(weights)
    
    if not scene:
        return json.dumps({"error": "缺少 scene 参数"}, ensure_ascii=False)
    
    if set_scene_config(scene, weights):
        return json.dumps({"success": True, "scene": scene, "weights": weights}, ensure_ascii=False)
    else:
        return json.dumps({"error": "设置失败，请检查场景名和权重总和是否为 1.0"}, ensure_ascii=False)

# GET: 获取配置
if not scene:
    # 返回所有场景的配置
    result = {}
    for key in SCENES:
        config = get_scene_config(key)
        result[key] = {
            "name": config["name"],
            "weights": config["weights"]
        }
    return json.dumps(result, ensure_ascii=False)

config = get_scene_config(scene)
if not config:
    return json.dumps({"error": f"未知场景: {scene}"}, ensure_ascii=False)

return json.dumps({
    "scene": scene,
    "name": config["name"],
    "weights": config["weights"]
}, ensure_ascii=False)