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- // use_urlshortener.go
- package main
- import (
- urlshortener "code.google.com/p/google-api-go-client/urlshortener/v1"
- "fmt"
- "net/http"
- "text/template"
- )
- func main() {
- http.HandleFunc("/", root)
- http.HandleFunc("/short", short)
- http.HandleFunc("/long", long)
- http.ListenAndServe("localhost:8080", nil)
- }
- // the template used to show the forms and the results web page to the user
- var rootHtmlTmpl = template.Must(template.New("rootHtml").Parse(`
- <html><body>
- <h1>URL SHORTENER</h1>
- {{if .}}{{.}}<br /><br />{{end}}
- <form action="/short" type="POST">
- Shorten this: <input type="text" name="longUrl" />
- <input type="submit" value="Give me the short URL" />
- </form>
- <br />
- <form action="/long" type="POST">
- Expand this: http://goo.gl/<input type="text" name="shortUrl" />
- <input type="submit" value="Give me the long URL" />
- </form>
- </body></html>
- `))
- func root(w http.ResponseWriter, r *http.Request) {
- rootHtmlTmpl.Execute(w, nil)
- }
- func short(w http.ResponseWriter, r *http.Request) {
- longUrl := r.FormValue("longUrl")
- urlshortenerSvc, _ := urlshortener.New(http.DefaultClient)
- url, _ := urlshortenerSvc.Url.Insert(&urlshortener.Url{LongUrl: longUrl}).Do()
- rootHtmlTmpl.Execute(w, fmt.Sprintf("Shortened version of %s is : %s", longUrl, url.Id))
- }
- func long(w http.ResponseWriter, r *http.Request) {
- shortUrl := "http://goo.gl/" + r.FormValue("shortUrl")
- urlshortenerSvc, _ := urlshortener.New(http.DefaultClient)
- url, err := urlshortenerSvc.Url.Get(shortUrl).Do()
- if err != nil {
- fmt.Println("error: %v", err)
- return
- }
- rootHtmlTmpl.Execute(w, fmt.Sprintf("Longer version of %s is : %s", shortUrl, url.LongUrl))
- }
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