find-stone-beer / files / pushover.go
pushover.go
74d9b692 2023-08-23 Pavel Safronov | 1 | package main |
| 2 | ||
| 3 | import ( | |
| 4 | "fmt" | |
| 5 | "net/http" | |
| 6 | "net/url" | |
| 7 | "os" | |
| 8 | ) | |
| 9 | ||
| 10 | const ( | |
abecb80c 2023-08-27 Pavel Safronov | 11 | pushoverTokenEnvVar = "PUSHOVER_TOKEN" |
| 12 | pushoverUserTokenEnvVar = "PUSHOVER_USER_TOKEN" | |
| 13 | maxMessageLength = 1024 | |
| 14 | // this project runs daily, so this is the max TTL for now | |
| 15 | // if this project is run more frequently, then this value should be changed | |
| 16 | ttlDays = 2 | |
| 17 | ||
| 18 | // automatically calculated, do not change | |
| 19 | ttlSeconds = ttlDays * 24 * 60 * 60 | |
74d9b692 2023-08-23 Pavel Safronov | 20 | ) |
| 21 | ||
abecb80c 2023-08-27 Pavel Safronov | 22 | func CombineUpToMaxMessageLength(prefix string, moreInfo string, messages []string) string { |
| 23 | var combinedMessage = prefix | |
| 24 | for _, message := range messages { | |
| 25 | newMessage := combinedMessage + message | |
| 26 | if len(newMessage)+len(moreInfo) > maxMessageLength { | |
| 27 | combinedMessage += moreInfo | |
| 28 | break | |
| 29 | } | |
| 30 | combinedMessage = newMessage | |
| 31 | } | |
| 32 | return combinedMessage | |
| 33 | } | |
| 34 | ||
74d9b692 2023-08-23 Pavel Safronov | 35 | func SendPushoverMessage(message string) error { |
abecb80c 2023-08-27 Pavel Safronov | 36 | if len(message) > maxMessageLength { |
| 37 | return fmt.Errorf("message is too long: %d > %d", len(message), maxMessageLength) | |
| 38 | } | |
74d9b692 2023-08-23 Pavel Safronov | 39 | postUrl := "https://api.pushover.net/1/messages.json" |
| 40 | ||
abecb80c 2023-08-27 Pavel Safronov | 41 | pushoverToken := os.Getenv(pushoverTokenEnvVar) |
| 42 | pushoverUser := os.Getenv(pushoverUserTokenEnvVar) | |
74d9b692 2023-08-23 Pavel Safronov | 43 | if pushoverUser == "" || pushoverToken == "" { |
abecb80c 2023-08-27 Pavel Safronov | 44 | return fmt.Errorf("missing environment variable %s or %s", pushoverUserTokenEnvVar, pushoverTokenEnvVar) |
74d9b692 2023-08-23 Pavel Safronov | 45 | } |
| 46 | ||
| 47 | response, err := http.PostForm(postUrl, url.Values{ | |
| 48 | "token": {pushoverToken}, | |
| 49 | "user": {pushoverUser}, | |
| 50 | "message": {message}, | |
63620b2d 2023-08-23 Pavel Safronov | 51 | "html": {"1"}, |
abecb80c 2023-08-27 Pavel Safronov | 52 | "ttl": {fmt.Sprintf("%d", ttlSeconds)}, |
74d9b692 2023-08-23 Pavel Safronov | 53 | }) |
| 54 | ||
| 55 | if err != nil { | |
| 56 | return err | |
| 57 | } | |
| 58 | defer response.Body.Close() | |
| 59 | ||
| 60 | isNot200 := response.StatusCode != 200 | |
| 61 | if isNot200 { | |
| 62 | return fmt.Errorf("pushover returned status code %d: %s", response.StatusCode, response.Status) | |
| 63 | } | |
| 64 | return nil | |
| 65 | } |