// Pacakge web25 provides an opinionated way to register an external web2
// frontend to provide a "better" web2.5 experience.
package web25

import (
	"strings"

	"gno.land/p/moul/realmpath"
)

type Config struct {
	CID  string
	URL  string
	Text string
}

func (c *Config) SetRemoteFrontendByURL(url string) {
	c.CID = ""
	c.URL = url
}

func (c *Config) SetRemoteFrontendByCID(cid string) {
	c.CID = cid
	c.URL = ""
}

func (c Config) GetLink() string {
	if c.CID != "" {
		return "https://ipfs.io/ipfs/" + c.CID
	}
	return c.URL
}

const DefaultText = "Click [here]({link}) to visit the full rendering experience.\n"

// Render displays a frontend link at the top of your realm's Render function in
// a concistent way to help gno visitors to have a consistent experience.
//
// if query is not nil, then it will check if it's not disable by ?no-web25, so
// that you can call the render function from an external point of view.
func (c Config) Render(path string) string {
	if realmpath.Parse(path).Query.Get("no-web25") == "1" {
		return ""
	}
	text := c.Text
	if text == "" {
		text = DefaultText
	}
	text = strings.ReplaceAll(text, "{link}", c.GetLink())
	return text
}