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package middleware
import (
"fmt"
"time"
gltime "code.crute.us/mcrute/golib/time"
"github.com/labstack/echo/v4"
)
var (
CacheOneHourMiddleware = CacheHeadersMiddleware(1 * time.Hour)
CacheOneDayMiddleware = CacheHeadersMiddleware(1 * gltime.Day)
CacheOneMonthMiddleware = CacheHeadersMiddleware(30 * gltime.Day)
)
func CacheHeadersMiddleware(d time.Duration) echo.MiddlewareFunc {
ds := int(d.Seconds())
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
c.Response().Header().Set("Vary", "Accept-Encoding")
c.Response().Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d", ds))
c.Response().Header().Set("Expires", time.Now().Add(d).Format(time.RFC1123))
return next(c)
}
}
}
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