80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"regexp"
|
|
"time"
|
|
|
|
"golang.org/x/mod/semver"
|
|
)
|
|
|
|
const updateCheckURL = "https://api.github.com/repos/knadh/listmonk/releases/latest"
|
|
|
|
type remoteUpdateResp struct {
|
|
Version string `json:"tag_name"`
|
|
URL string `json:"html_url"`
|
|
}
|
|
|
|
// AppUpdate contains information of a new update available to the app that
|
|
// is sent to the frontend.
|
|
type AppUpdate struct {
|
|
Version string `json:"version"`
|
|
URL string `json:"url"`
|
|
}
|
|
|
|
var reSemver = regexp.MustCompile(`-(.*)`)
|
|
|
|
// checkUpdates is a blocking function that checks for updates to the app
|
|
// at the given intervals. On detecting a new update (new semver), it
|
|
// sets the global update status that renders a prompt on the UI.
|
|
func checkUpdates(curVersion string, interval time.Duration, app *App) {
|
|
// Strip -* suffix.
|
|
curVersion = reSemver.ReplaceAllString(curVersion, "")
|
|
time.Sleep(time.Second * 1)
|
|
ticker := time.NewTicker(interval)
|
|
defer ticker.Stop()
|
|
|
|
for ; true; <-ticker.C {
|
|
resp, err := http.Get(updateCheckURL)
|
|
if err != nil {
|
|
app.log.Printf("error checking for remote update: %v", err)
|
|
continue
|
|
}
|
|
|
|
if resp.StatusCode != 200 {
|
|
app.log.Printf("non 200 response on remote update check: %d", resp.StatusCode)
|
|
continue
|
|
}
|
|
|
|
b, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
app.log.Printf("error reading remote update payload: %v", err)
|
|
continue
|
|
}
|
|
resp.Body.Close()
|
|
|
|
var up remoteUpdateResp
|
|
if err := json.Unmarshal(b, &up); err != nil {
|
|
app.log.Printf("error unmarshalling remote update payload: %v", err)
|
|
continue
|
|
}
|
|
|
|
// There is an update. Set it on the global app state.
|
|
if semver.IsValid(up.Version) {
|
|
v := reSemver.ReplaceAllString(up.Version, "")
|
|
if semver.Compare(v, curVersion) > 0 {
|
|
app.Lock()
|
|
app.update = &AppUpdate{
|
|
Version: up.Version,
|
|
URL: up.URL,
|
|
}
|
|
app.Unlock()
|
|
|
|
app.log.Printf("new update %s found", up.Version)
|
|
}
|
|
}
|
|
}
|
|
}
|