a simple url shortener in Go (check it out at qurl.org)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

86 lines
1.6 KiB

package pages
import (
"bytes"
"encoding/json"
"fmt"
"git.binarythought.com/cdramey/qurl/obj"
"net"
"net/http"
"time"
)
type apijson struct {
URL string `json:"url,omitempty"`
Exists bool `json:"exists,omitempty"`
Error string `json:"error,omitempty"`
}
func (ctx *RootHandler) ServeAPI(w http.ResponseWriter, r *http.Request) {
var (
j apijson
q *obj.QURL
err error
)
u := r.FormValue("url")
if u == "" {
j.Error = "Not a valid URL."
goto complete
}
q, err = ctx.Storage.GetQURLByURL(u)
if err != nil {
j.Error = err.Error()
goto complete
}
// Deal with URLs that already exist in the database
if q != nil {
j.Exists = true
j.URL = fmt.Sprintf("https://qurl.org/%s", obj.ToString(q.ID))
goto complete
}
q = &obj.QURL{
URL: u,
Created: time.Now(),
}
if h, _, err := net.SplitHostPort(r.RemoteAddr); err == nil && h != "" {
q.IP = net.ParseIP(h)
}
if b := r.Header.Get("User-Agent"); b != "" {
q.Browser = b
}
// Check if the URL we're adding is valid
err = q.CheckValid()
if err != nil {
j.Error = err.Error()
goto complete
}
// Add the URL
err = ctx.Storage.AddQURL(q)
if err != nil {
j.Error = err.Error()
goto complete
}
j.URL = fmt.Sprintf("https://qurl.org/%s", obj.ToString(q.ID))
complete:
var buf bytes.Buffer
encoder := json.NewEncoder(&buf)
err = encoder.Encode(j)
if err != nil {
http.Error(w, fmt.Sprintf("JSON encoding error: %s", err.Error()),
http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Content-Length", fmt.Sprintf("%d", buf.Len()))
w.Write(buf.Bytes())
}