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