package middlewares

import (
	"strings"

	"backend/providers/wechat"

	"github.com/gofiber/fiber/v3"
	"github.com/pkg/errors"
	log "github.com/sirupsen/logrus"
)

func (f *Middlewares) WeChatSilentAuth(c fiber.Ctx) error {
	log.WithField("module", "middleware.WeChatSilentAuth").Debug("Begin")
	defer log.WithField("module", "middleware.WeChatSilentAuth").Debug("END")

	// if cookie not exists key "openid", then redirect to the wechat auth page
	token := c.GetReqHeaders()["Authorization"]
	if len(token) != 0 {
		return c.Next()
	}

	// get current full url
	url := string(c.Request().URI().FullURI())
	if f.app.IsDevMode() && f.app.BaseURI != nil {
		url = strings.ReplaceAll(url, "http", "https")
		url = strings.ReplaceAll(url, c.BaseURL(), *f.app.BaseURI)
	}

	log.WithField("module", "middleware.SilentAuth").Debug("redirect_uri: ", url)

	to, err := f.client.ScopeAuthorizeURL(
		wechat.ScopeAuthorizeURLWithRedirectURI(url),
		wechat.ScopeAuthorizeURLWithState("sns_basic_auth"),
	)
	if err != nil {
		return errors.Wrap(err, "failed to get wechat auth url")
	}
	log.WithField("module", "middleware.SilentAuth").Debug("redirectTo: ", to.String())

	return c.Redirect().To(to.String())
}