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package dash
import (
"context"
"github.com/a-h/templ"
)
type contextKey string
const (
contextUsernameKey contextKey = "admin.username"
contextRoleKey contextKey = "admin.role"
contextCSRFKey contextKey = "admin.csrf"
contextURLPrefixKey contextKey = "admin.urlprefix"
)
// WithAuthContext stores auth metadata on the request context.
func WithAuthContext(ctx context.Context, username, role, csrfToken string) context.Context {
if username != "" {
ctx = context.WithValue(ctx, contextUsernameKey, username)
}
if role != "" {
ctx = context.WithValue(ctx, contextRoleKey, role)
}
if csrfToken != "" {
ctx = context.WithValue(ctx, contextCSRFKey, csrfToken)
}
return ctx
}
// UsernameFromContext retrieves the username from context.
func UsernameFromContext(ctx context.Context) string {
if ctx == nil {
return ""
}
if value, ok := ctx.Value(contextUsernameKey).(string); ok {
return value
}
return ""
}
// RoleFromContext retrieves the role from context.
func RoleFromContext(ctx context.Context) string {
if ctx == nil {
return ""
}
if value, ok := ctx.Value(contextRoleKey).(string); ok {
return value
}
return ""
}
// CSRFTokenFromContext retrieves the CSRF token from context.
func CSRFTokenFromContext(ctx context.Context) string {
if ctx == nil {
return ""
}
if value, ok := ctx.Value(contextCSRFKey).(string); ok {
return value
}
return ""
}
// WithURLPrefix stores the URL prefix on the context.
func WithURLPrefix(ctx context.Context, prefix string) context.Context {
return context.WithValue(ctx, contextURLPrefixKey, prefix)
}
// URLPrefixFromContext retrieves the URL prefix from context.
func URLPrefixFromContext(ctx context.Context) string {
if ctx == nil {
return ""
}
if value, ok := ctx.Value(contextURLPrefixKey).(string); ok {
return value
}
return ""
}
// P returns the URL prefix prepended to the given path.
// Use in Go handlers for redirect URLs.
func P(ctx context.Context, path string) string {
return URLPrefixFromContext(ctx) + path
}
// PUrl returns the URL prefix prepended to the given path as a templ.SafeURL.
// Use in templ templates for href attributes.
func PUrl(ctx context.Context, path string) templ.SafeURL {
return templ.SafeURL(URLPrefixFromContext(ctx) + path)
}