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package server
import (
"log"
"net/http"
"text/template"
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)
type connectorInfo struct {
DisplayName string
URL string
}
var loginTmpl = template.Must(template.New("login-template").Parse(`<html>
<head></head>
<body>
<p>Login options</p>
{{ range $i, $connector := .Connectors }}
<a href="{{ $connector.URL }}?state={{ $.State }}">{{ $connector.DisplayName }}</a>
{{ end }}
</body>
</html>`))
func renderLoginOptions(w http.ResponseWriter, connectors []connectorInfo, state string) {
data := struct {
Connectors []connectorInfo
State string
}{connectors, state}
renderTemplate(w, loginTmpl, data)
}
var passwordTmpl = template.Must(template.New("password-template").Parse(`<html>
<body>
<p>Login</p>
<form action="{{ .Callback }}" method="POST">
Login: <input type="text" name="login"/><br/>
Password: <input type="password" name="password"/><br/>
<input type="hidden" name="state" value="{{ .State }}"/>
<input type="submit"/>
{{ if .Message }}
<p>Error: {{ .Message }}</p>
{{ end }}
</form>
</body>
</html>`))
func renderPasswordTmpl(w http.ResponseWriter, state, callback, message string) {
data := struct {
State string
Callback string
Message string
}{state, callback, message}
renderTemplate(w, passwordTmpl, data)
}
var approvalTmpl = template.Must(template.New("approval-template").Parse(`<html>
<body>
<p>User: {{ .User }}</p>
<p>Client: {{ .ClientName }}</p>
<form method="post">
<input type="hidden" name="state" value="{{ .State }}"/>
<input type="hidden" name="approval" value="approve">
<button type="submit">Approve</button>
</form>
<form method="post">
<input type="hidden" name="state" value="{{ .State }}"/>
<input type="hidden" name="approval" value="reject">
<button type="submit">Reject</button>
</form>
</body>
</html>`))
func renderApprovalTmpl(w http.ResponseWriter, state string, identity storage.Claims, client storage.Client, scopes []string) {
data := struct {
User string
ClientName string
State string
}{identity.Email, client.Name, state}
renderTemplate(w, approvalTmpl, data)
}
func renderTemplate(w http.ResponseWriter, tmpl *template.Template, data interface{}) {
err := tmpl.Execute(w, data)
if err == nil {
return
}
switch err := err.(type) {
case template.ExecError:
// An ExecError guarentees that Execute has not written to the underlying reader.
log.Printf("Error rendering template %s: %s", tmpl.Name(), err)
// TODO(ericchiang): replace with better internal server error.
http.Error(w, "Internal server error", http.StatusInternalServerError)
default:
// An error with the underlying write, such as the connection being
// dropped. Ignore for now.
}
}