fix: fix loginURL/logoutURL generate error

Author: asjdf

cas.go

@@ -3,24 +3,37 @@ package juanjiCAS
 import "net/url"
 
 type CAS struct {
-	domain  *url.URL
-	sendKey string
+	frontend *url.URL
+	backend  *url.URL
+	sendKey  string
 }
 
 func New(domain ...string) *CAS {
 	c := &CAS{}
 	if len(domain) == 0 {
-		return c.SetDomain("https://api.cas.juanji.tech")
+		return c.SetDomain("https://api.cas.juanji.tech").
+			SetFrontendDomain("https://cas.juanji.tech")
 	}
 	return c.SetDomain(domain[0])
 }
 
+// SetDomain set backend domain
 func (c *CAS) SetDomain(domain string) *CAS {
 	u, err := url.Parse(domain)
 	if err != nil {
 		panic(err)
 	}
-	c.domain = u
+	c.backend = u
+	return c
+}
+
+// SetFrontendDomain set frontend domain
+func (c *CAS) SetFrontendDomain(domain string) *CAS {
+	u, err := url.Parse(domain)
+	if err != nil {
+		panic(err)
+	}
+	c.frontend = u
 	return c
 }
 

notify.go

@@ -17,7 +17,7 @@ func (c *CAS) Notify(notice *Notice) error {
 		return ErrNotSetSendKey
 	}
 	resp := Resp{}
-	err := gout.POST(c.domain.JoinPath("/api/notify/send/" + c.sendKey).String()).
+	err := gout.POST(c.backend.JoinPath("/api/notify/send/" + c.sendKey).String()).
 		SetJSON(notice).
 		BindJSON(&resp).Do()
 	if err != nil {

serviceValidate.go

@@ -5,23 +5,23 @@ import (
 )
 
 func (c *CAS) GetLoginURL(redirectURL string) string {
-	u := c.domain.JoinPath("/login")
+	u := c.frontend.JoinPath("/login")
 	q := u.Query()
 	q.Set("service", redirectURL)
 	u.RawQuery = q.Encode()
 	return u.String()
 }
 
 func (c *CAS) GetLogoutURL(redirectURL string) string {
-	u := c.domain.JoinPath("/logout")
+	u := c.frontend.JoinPath("/logout")
 	q := u.Query()
 	q.Set("service", redirectURL)
 	u.RawQuery = q.Encode()
 	return u.String()
 }
 
 func (c *CAS) GetValidateURL(ticket string, redirectURL string) string {
-	u := c.domain.JoinPath("/serviceValidate")
+	u := c.backend.JoinPath("/serviceValidate")
 	q := u.Query()
 	q.Set("ticket", ticket)
 	q.Set("service", redirectURL)
@@ -33,7 +33,7 @@ func (c *CAS) GetValidateURL(ticket string, redirectURL string) string {
 // NOT SUPPORT YET
 // deprecated
 func (c *CAS) getProxyValidateURL(ticket string, redirectURL string) string {
-	u := c.domain.JoinPath("/proxyValidate")
+	u := c.backend.JoinPath("/proxyValidate")
 	q := u.Query()
 	q.Set("ticket", ticket)
 	q.Set("service", redirectURL)