balki/remote-local-storage
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Balakrishnan Balasubramanian 2024-08-30 18:16:40 -04:00
commit 643b444b62
5 changed files with 124 additions and 0 deletions
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2
.gitignore vendored Normal file
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remote-local-storage
dump.json

5
go.mod Normal file
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module go.balki.me/remote-local-storage
go 1.23.0
require go.balki.me/anyhttp v0.3.0

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go.sum Normal file
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go.balki.me/anyhttp v0.3.0 h1:WtBQ0rnkg567sX/O4ij/+qBbdCIUt5VURSe718sITBY=
go.balki.me/anyhttp v0.3.0/go.mod h1:JhfekOIjgVODoVqUCficjpIgmB3wwlB7jhN0eN2EZ/s=

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main.go Normal file
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// Save and serve HTML local storage in server
package main
import (
"bytes"
_ "embed"
"flag"
"io"
"log"
"net/http"
"os"
"time"
"go.balki.me/anyhttp"
)
//go:embed wrap.html
var html []byte
func main() {
addr := flag.String("address", "localhost:3242", "See go.balki.me/anyhttp for usage")
dumpFile := flag.String("dumpfile", "dump.json", "local storage file path")
http.HandleFunc("/", func(w http.ResponseWriter, _ *http.Request) {
w.Write([]byte("<h2>Error!</h2><p>Check your webserver config, You should not see this!</p>"))
})
http.HandleFunc("/wrap/", func(w http.ResponseWriter, r *http.Request) {
http.ServeContent(w, r, "index.html", time.Now(), bytes.NewReader(html))
})
http.HandleFunc("/wrap/saveLS", func(w http.ResponseWriter, r *http.Request) {
if _, err := w.Write([]byte("OK")); err != nil {
log.Panic(err)
}
data, err := io.ReadAll(r.Body)
if err != nil {
log.Panic(err)
}
if err := os.WriteFile(*dumpFile, data, 0o400); err != nil {
log.Panic(err)
}
if err != nil {
log.Panic(err)
}
log.Println("Saved!")
})
http.HandleFunc("/wrap/loadLS", func(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "application/json")
data, err := os.ReadFile(*dumpFile)
if err != nil {
data = []byte("{}")
}
if _, err := w.Write(data); err != nil {
log.Panic(err)
}
log.Println("Sent!")
})
err := anyhttp.ListenAndServe(*addr, nil)
if err != nil {
log.Panic(err)
}
}

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wrap.html Normal file
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<!doctype html>
<html>
<head>
<link rel="icon" href="data:;base64,iVBORw0KGgo=" />
<script>
(async () => {
const resp = await fetch("loadLS");
const lsItems = JSON.parse(await resp.text());
for (const key in lsItems) {
localStorage.setItem(key, lsItems[key])
}
console.log("Loaded local storage");
})();
function postLocalStorage() {
(async () => {
const resp = await fetch("saveLS", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify(localStorage),
});
console.log(await resp.text());
})();
}
setInterval(postLocalStorage, 10 * 60 * 1000) // 10 mins
</script>
<style>
body {
margin: 0;
}
iframe {
width: 100vw;
height: 100vh;
border: none;
}
</style>
</head>
<body>
<iframe src="/"></iframe>
</body>
</html>