Function CookieEncoding

context/context.go:5779–5812

CookieEncoding accepts a value which implements `Encode` and `Decode` methods. It calls its `Encode` on `Context.SetCookie, UpsertCookie, and SetCookieKV` methods. And on `Context.GetCookie` method it calls its `Decode`. If "cookieNames" slice is not empty then only cookies with that `Name` will be

(encoding SecureCookie, cookieNames ...string)

//
// Example: https://github.com/kataras/iris/tree/main/_examples/cookies/securecookie
func CookieEncoding(encoding SecureCookie, cookieNames ...string) CookieOption {
	if encoding == nil {
		return func(_ *Context, _ *http.Cookie, _ uint8) {}
	}

	return func(ctx *Context, c *http.Cookie, op uint8) {
		if op == OpCookieDel {
			return
		}

		if !CookieIncluded(c, cookieNames) {
			return
		}

		switch op {
		case OpCookieSet:
			// Should encode, it's a write to the client operation.
			newVal, err := encoding.Encode(c.Name, c.Value)
			if err != nil {
				ctx.Application().Logger().Error(err)
				c.Value = ""
			} else {
				c.Value = newVal
			}

			return
		case OpCookieGet:
			// Should decode, it's a read from the client operation.
			if err := encoding.Decode(c.Name, c.Value, &c.Value); err != nil {
				c.Value = ""
			}
		}
	}
}

const cookieOptionsContextKey = "iris.cookie.options"