package internal

import (
	"fmt"
	"net/http"

	"github.com/julienschmidt/httprouter"
)

const OpenSearchTemplate string = `<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
  <ShortName>%s</ShortName>
  <Description>%s</Description>
  <Tags>search</Tags>
  <Contact>%s</Contact>
  <Url type="text/html" method="get" template="%s?q={searchTerms}"/>
</OpenSearchDescription>
`

// OpenSearchHandler ...
func (s *Server) OpenSearchHandler() httprouter.Handle {
	return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
		w.Header().Set("Content-Type", "text/xml")

		w.Write(
			[]byte(fmt.Sprintf(
				OpenSearchTemplate,
				s.config.Name,
				s.config.Description,
				s.config.AdminEmail,
				s.config.BaseURL,
			)),
		)
	}
}