64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
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// Package updater checks for updates to Doodle.
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package updater
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"time"
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"git.kirsle.net/apps/doodle/pkg/branding"
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"git.kirsle.net/apps/doodle/pkg/log"
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)
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// VersionInfo holds the version.json data for self-update check.
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type VersionInfo struct {
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LatestVersion string `json:"latestVersion"`
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DownloadURL string `json:"downloadUrl"`
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}
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// Last result of the update check, until forced to re-check.
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var lastUpdate VersionInfo
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// Check for new updates.
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func Check() (VersionInfo, error) {
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var result VersionInfo
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// Return last cached check.
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if lastUpdate.LatestVersion != "" {
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return lastUpdate, nil
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}
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client := &http.Client{
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Timeout: 10 * time.Second,
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}
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log.Debug("Checking for app updates")
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resp, err := client.Get(branding.UpdateCheckJSON)
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if err != nil {
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return result, fmt.Errorf("updater.Check: HTTP error: %s", err)
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}
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if resp.StatusCode != http.StatusOK {
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return result, fmt.Errorf("updater.Check: unexpected HTTP status code %d", resp.StatusCode)
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}
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// Parse the JSON response.
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body, _ := ioutil.ReadAll(resp.Body)
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err = json.Unmarshal(body, &result)
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if err != nil {
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return result, fmt.Errorf("updater.Check: JSON parse error: %s", err)
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}
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lastUpdate = result
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return result, nil
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}
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// CheckNow forces a re-check of the update info.
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func CheckNow() (VersionInfo, error) {
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lastUpdate = VersionInfo{}
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return Check()
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}
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