package configser

import (
	"fmt"
	"sync"
	"time"
	"videoweb/app/service/upstream"
	"videoweb/pub/common/log"

	"github.com/gin-gonic/gin"
)

const footerPath = "/api/app/config/footer/info"
const footerCacheTTL = 60 * time.Second

var (
	footerMu    sync.Mutex
	footerCache *FooterInfo
	footerAt    time.Time
)

// FetchFooter 拉取底部配置，返回与 swagger proto.FooterInfo 一致的结构。
func FetchFooter(c *gin.Context) (*FooterInfo, error) {
	var env APIEnvelope[FooterInfoResp]
	if err := upstream.GetPublicJSON(c, footerPath, &env); err != nil {
		return nil, err
	}
	if env.Code != 200 {
		return nil, fmt.Errorf("footer info code=%d msg=%s", env.Code, env.Msg)
	}
	info := env.Data.FooterInfo
	return &info, nil
}

// FetchFooterOrEmpty 带短缓存；失败或空数据时返回空结构，不做写死兜底/字段映射。
func FetchFooterOrEmpty(c *gin.Context) FooterInfo {
	footerMu.Lock()
	defer footerMu.Unlock()
	if footerCache != nil && time.Since(footerAt) < footerCacheTTL {
		return *footerCache
	}

	info, err := FetchFooter(c)
	if err != nil {
		log.Error("fetch footer info failed", log.E(err))
		return FooterInfo{}
	}
	footerCache = info
	footerAt = time.Now()
	return *info
}