commit ea151d1de7bacc24fca339c19d8afd2089c4b2fa
Author: Robert Gerus <arachnist@i.am-a.cat>
Date:   Mon Jun 13 19:26:48 2016 +0200

    Frog tipper! First and final release!

diff --git a/frog-tipper.go b/frog-tipper.go
new file mode 100644
index 0000000..0f37281
--- /dev/null
+++ b/frog-tipper.go
@@ -0,0 +1,109 @@
+// Copyright 2015 Robert S. Gerus. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/cookiejar"
+	"sync"
+	"time"
+)
+
+type tip struct {
+	Number int    `json:"number"`
+	Tip    string `json:"tip"`
+}
+
+type tips struct {
+	Tips []tip `json:"tips"`
+	lock sync.RWMutex
+}
+
+func (tips *tips) fetchTips() error {
+	tips.lock.Lock()
+	defer tips.lock.Unlock()
+
+	data, err := httpGet("http://frog.tips/api/1/tips/")
+	if err != nil {
+		return err
+	}
+
+	err = json.Unmarshal(data, tips)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (tips *tips) popTip() string {
+	if len(tips.Tips) == 0 {
+		if err := tips.fetchTips(); err != nil {
+			return fmt.Sprint(err)
+		}
+	}
+
+	tips.lock.RLock()
+	defer tips.lock.RUnlock()
+
+	rmsg := tips.Tips[len(tips.Tips)-1].Tip
+	tips.Tips = tips.Tips[:len(tips.Tips)-1]
+
+	return rmsg
+}
+
+func main() {
+	var t tips
+	for {
+		fmt.Println(t.popTip())
+	}
+}
+
+func httpGet(link string) ([]byte, error) {
+	var buf []byte
+	cj, err := cookiejar.New(nil)
+	tr := &http.Transport{
+		TLSHandshakeTimeout:   20 * time.Second,
+		ResponseHeaderTimeout: 20 * time.Second,
+	}
+	client := &http.Client{
+		Transport: tr,
+		Jar:       cj,
+	}
+
+	req, err := http.NewRequest("GET", link, nil)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.152 Safari/537.36")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return []byte{}, err
+	}
+	defer resp.Body.Close()
+
+	// 5MiB
+	if resp.ContentLength > 5*1024*1024 || resp.ContentLength < 0 {
+		buf = make([]byte, 5*1024*1024)
+	} else if resp.ContentLength == 0 {
+		return []byte{}, nil
+	} else {
+		buf = make([]byte, resp.ContentLength)
+	}
+
+	i, err := io.ReadFull(resp.Body, buf)
+	if err == io.ErrUnexpectedEOF {
+		buf = buf[:i]
+	} else if err != nil {
+		return []byte{}, err
+	}
+
+	return buf, nil
+}