package service

import (
	"encoding/json"
	"fmt"
	"strings"
)

// parseAnalysisResponse 解析分析模型输出的判定 JSON。
// 容错：剥 ```json 代码块/首尾空白/多余文字，取首个 {...}。
func parseAnalysisResponse(content string) (retryable bool, reason string, err error) {
	s := strings.TrimSpace(content)
	s = strings.TrimPrefix(s, "```json")
	s = strings.TrimSuffix(s, "```")
	s = strings.TrimSpace(s)
	start, end := strings.IndexByte(s, '{'), strings.LastIndexByte(s, '}')
	if start < 0 || end <= start {
		return false, "", fmt.Errorf("分析响应中未找到JSON对象: %q", content)
	}
	var obj struct {
		Retryable bool   `json:"retryable"`
		Reason    string `json:"reason"`
	}
	if err = json.Unmarshal([]byte(s[start:end+1]), &obj); err != nil {
		return false, "", fmt.Errorf("分析响应JSON解析失败: %v", err)
	}
	return obj.Retryable, obj.Reason, nil
}