package util

import (
	"context"

	"gitea.com/red-future/common/utils"
	"github.com/gogf/gf/v2/frame/g"
)

// AsyncCtx 固化异步上下文中的 token 和用户信息，避免请求结束后丢失
func AsyncCtx(ctx context.Context) context.Context {
	asyncCtx := context.WithoutCancel(ctx)
	if r := g.RequestFromCtx(ctx); r != nil {
		if token := r.Header.Get("Authorization"); token != "" {
			asyncCtx = context.WithValue(asyncCtx, "token", token)
		}
		if userInfo := r.Header.Get("X-User-Info"); userInfo != "" {
			asyncCtx = context.WithValue(asyncCtx, "xUserInfo", userInfo)
		}
	}
	if user, err := utils.GetUserInfo(ctx); err == nil && user != nil {
		asyncCtx = context.WithValue(asyncCtx, "user", user)
	}
	return asyncCtx
}

// ForwardHeaders 透传调用链路的头信息，优先使用 ctx 中的固化值
func ForwardHeaders(ctx context.Context) map[string]string {
	headers := make(map[string]string)

	if token, ok := ctx.Value("token").(string); ok && token != "" {
		headers["Authorization"] = token
	}
	if x, ok := ctx.Value("xUserInfo").(string); ok && x != "" {
		headers["X-User-Info"] = x
	}

	// 兜底：从请求头获取
	if r := g.RequestFromCtx(ctx); r != nil {
		if headers["Authorization"] == "" {
			if token := r.Header.Get("Authorization"); token != "" {
				headers["Authorization"] = token
			}
		}
		if headers["X-User-Info"] == "" {
			if userInfo := r.Header.Get("X-User-Info"); userInfo != "" {
				headers["X-User-Info"] = userInfo
			}
		}
	}
	return headers
}