package renderer import ( "io" "code.tokarch.uk/mainnika/nikita-tokarch-uk/frontend/templates" routing "github.com/jackwhelpton/fasthttp-routing/v2" "github.com/valyala/fasthttp" ) var _ routing.DataWriter = (*TemplateWriter)(nil) // staticWriter is thread-safe static instance of template writer var staticWriter = &TemplateWriter{} // TemplateWriter is the fasthttp data writer that loads and executes template using the content type TemplateWriter struct{} // SetHeader sets the content type to HTML since all templates are HTML func (tw *TemplateWriter) SetHeader(rh *fasthttp.ResponseHeader) { rh.SetContentType(routing.MIME_HTML) } // Write executes the template and writes result to the response writer func (tw *TemplateWriter) Write(w io.Writer, content interface{}) error { template := templates.GetTemplateOf(content) return template.Execute(w, content) } // useTemplateWriter is the routing middleware to set the default data writer func (r *Renderer) useTemplateWriter(c *routing.Context) (err error) { c.SetDataWriter(staticWriter) return }