100 lines
2.5 KiB
Go
Executable file
100 lines
2.5 KiB
Go
Executable file
package main
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"path/filepath"
|
|
"text/template"
|
|
|
|
"gocv.io/x/gocv"
|
|
)
|
|
|
|
// StreamURL Unexported
|
|
type StreamURL struct {
|
|
URL string
|
|
}
|
|
|
|
func index(w http.ResponseWriter, r *http.Request) {
|
|
if r.FormValue("URL") == "" {
|
|
indexTemplate, err := template.ParseFiles(filepath.Join("templates", "index.html"))
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
indexTemplate.Execute(w, nil)
|
|
return
|
|
}
|
|
streamURL := StreamURL{
|
|
URL: r.FormValue("URL"),
|
|
}
|
|
streamTemplate, err := template.ParseFiles(filepath.Join("templates", "stream.html"))
|
|
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
streamTemplate.Execute(w, streamURL)
|
|
}
|
|
|
|
func stream(w http.ResponseWriter, r *http.Request) {
|
|
if r.FormValue("URL") == "" {
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "image/jpeg")
|
|
URL := r.FormValue("URL")
|
|
resp, err := http.Get(URL)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
img, err := ioutil.ReadAll(resp.Body)
|
|
defer resp.Body.Close()
|
|
|
|
// TODO async for this?
|
|
saveStreamInstant(URL, img)
|
|
|
|
w.Write([]byte(img))
|
|
|
|
gocvImg := gocv.IMRead(filepath.Join(".", "streams", "vERFlpF_5Y-AgJ06PjD8-LtylFJXEjbqJp0g3he5Ngs=", "current.jpg"), gocv.IMReadColor)
|
|
fmt.Println(gocvImg.Empty())
|
|
}
|
|
|
|
func saveStreamInstant(URL string, img []byte) {
|
|
h := sha256.New()
|
|
h.Write([]byte(URL))
|
|
streamDir := base64.URLEncoding.EncodeToString(h.Sum(nil))
|
|
streamStoreDir := filepath.Join(".", "streams", string(streamDir))
|
|
os.MkdirAll(streamStoreDir, os.ModePerm)
|
|
|
|
currentStreamInstantPath := filepath.Join(streamStoreDir, "current.jpg")
|
|
_, err := os.Stat(currentStreamInstantPath)
|
|
swap := !os.IsNotExist(err)
|
|
|
|
if swap {
|
|
currentStreamInstantPath = filepath.Join(streamStoreDir, "next.jpg")
|
|
}
|
|
err = ioutil.WriteFile(currentStreamInstantPath, img, os.ModePerm)
|
|
if err != nil {
|
|
log.Fatal("Can't write latest stream instant.")
|
|
}
|
|
if swap {
|
|
previousStreamInstantPath := filepath.Join(streamStoreDir, "previous.jpg")
|
|
nextStreamInstantPath := currentStreamInstantPath
|
|
currentStreamInstantPath = filepath.Join(streamStoreDir, "current.jpg")
|
|
|
|
err = os.Rename(currentStreamInstantPath, previousStreamInstantPath)
|
|
err = os.Rename(nextStreamInstantPath, currentStreamInstantPath)
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
staticFileServer := http.FileServer(http.Dir("./static"))
|
|
http.Handle("/static/", http.StripPrefix("/static/", staticFileServer))
|
|
|
|
http.HandleFunc("/", index)
|
|
http.HandleFunc("/stream", stream)
|
|
log.Fatal(http.ListenAndServe(":8080", nil))
|
|
}
|