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