Publish to telegram #15
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,186 @@ | ||
| package proc | ||
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| import ( | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "path" | ||
| "strings" | ||
| "time" | ||
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| log "github.com/go-pkgz/lgr" | ||
| "github.com/microcosm-cc/bluemonday" | ||
| tb "gopkg.in/tucnak/telebot.v2" | ||
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| "github.com/umputun/feed-master/app/feed" | ||
| ) | ||
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| const ( | ||
| maxTelegramFileSize = 50_000_000 | ||
| ) | ||
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| // TelegramClient client | ||
| type TelegramClient struct { | ||
| Bot *tb.Bot | ||
| Timeout time.Duration | ||
| } | ||
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| // NewTelegramClient init telegram client | ||
| func NewTelegramClient(token string, timeout time.Duration) (*TelegramClient, error) { | ||
| if timeout == 0 { | ||
| timeout = time.Duration(60 * 10) | ||
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| } | ||
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| if token == "" { | ||
| return &TelegramClient{ | ||
| Bot: nil, | ||
| Timeout: timeout, | ||
| }, nil | ||
| } | ||
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| bot, err := tb.NewBot(tb.Settings{ | ||
| Token: token, | ||
| Client: &http.Client{Timeout: timeout * time.Second}, | ||
| }) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| result := TelegramClient{ | ||
| Bot: bot, | ||
| Timeout: timeout, | ||
| } | ||
| return &result, err | ||
| } | ||
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| // Send message, skip if telegram token empty | ||
| func (client TelegramClient) Send(channelID string, item feed.Item) error { | ||
| if client.Bot == nil { | ||
| return nil | ||
| } | ||
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| if channelID == "" { | ||
| return nil | ||
| } | ||
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| contentLength, err := getContentLength(item.Enclosure.URL) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| var message *tb.Message | ||
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| if contentLength < maxTelegramFileSize { | ||
| message, err = client.sendAudio(channelID, item) | ||
| } else { | ||
| message, err = client.sendText(channelID, item) | ||
| } | ||
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| if err != nil { | ||
| return err | ||
| } | ||
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| log.Printf("[DEBUG] send telegram message: \n%s", message.Text) | ||
| return err | ||
| } | ||
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| func getContentLength(url string) (int64, error) { | ||
|
There was a problem hiding this comment. @umputun how mocking http response? There was a problem hiding this comment. see httptest. You can run test server and provide whatever response you need There was a problem hiding this comment. this is an example of httptest.Server use in real life, from one of my projects https://github.com/go-pkgz/rest/blob/master/httperrors_test.go#L16 |
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| resp, err := http.Head(url) //nolint:gosec | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
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| defer resp.Body.Close() | ||
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| if resp.StatusCode != 200 { | ||
| return 0, fmt.Errorf("resp.StatusCode: %d, not equal 200", resp.StatusCode) | ||
| } | ||
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| log.Printf("[DEBUG] Content-Length: %d, url: %s", resp.ContentLength, url) | ||
| return resp.ContentLength, err | ||
| } | ||
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| func (client TelegramClient) sendText(channelID string, item feed.Item) (*tb.Message, error) { | ||
| message, err := client.Bot.Send( | ||
| recipient{chatID: channelID}, | ||
| client.getMessageHTML(item), | ||
| tb.ModeHTML, | ||
| tb.NoPreview, | ||
| ) | ||
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| return message, err | ||
| } | ||
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| func (client TelegramClient) sendAudio(channelID string, item feed.Item) (*tb.Message, error) { | ||
| httpBody, err := client.downloadAudio(item.Enclosure.URL) | ||
| defer httpBody.Close() //nolint:staticcheck | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| audio := tb.Audio{ | ||
| File: tb.FromReader(httpBody), | ||
| FileName: client.getFilenameByURL(item.Enclosure.URL), | ||
| MIME: "audio/mpeg", | ||
| Caption: client.getMessageHTML(item), | ||
| Title: item.Title, | ||
| } | ||
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| message, err := audio.Send( | ||
| client.Bot, | ||
| recipient{chatID: channelID}, | ||
| &tb.SendOptions{ | ||
| ParseMode: tb.ModeHTML, | ||
| }, | ||
| ) | ||
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| return message, err | ||
| } | ||
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| func (client TelegramClient) downloadAudio(url string) (io.ReadCloser, error) { | ||
| clientHTTP := &http.Client{Timeout: client.Timeout * time.Second} | ||
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| resp, err := clientHTTP.Get(url) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| log.Printf("[DEBUG] start download audio: %s", url) | ||
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| return resp.Body, err | ||
| } | ||
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| // https://core.telegram.org/bots/api#html-style | ||
| func (client TelegramClient) tagLinkOnlySupport(html string) string { | ||
| p := bluemonday.NewPolicy() | ||
| p.AllowAttrs("href").OnElements("a") | ||
| return p.Sanitize(html) | ||
| } | ||
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| func (client TelegramClient) getMessageHTML(item feed.Item) string { | ||
| title := strings.TrimSpace(item.Title) | ||
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| description := client.tagLinkOnlySupport(string(item.Description)) | ||
| description = strings.TrimSpace(description) | ||
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| messageHTML := fmt.Sprintf("%s\n\n%s\n\n%s", title, description, item.Enclosure.URL) | ||
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| return messageHTML | ||
| } | ||
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| func (client TelegramClient) getFilenameByURL(url string) string { | ||
| _, filename := path.Split(url) | ||
| return filename | ||
| } | ||
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| type recipient struct { | ||
| chatID string | ||
| } | ||
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| func (r recipient) Recipient() string { | ||
| if !strings.HasPrefix(r.chatID, "@") { | ||
| return "@" + r.chatID | ||
| } | ||
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| return r.chatID | ||
| } | ||
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when starting without
TELEGRAM_TOKENthere will be an error,There was a problem hiding this comment.
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this is not right, telegram support should be optional
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for "need to register this env in docker-compose?" - I think you are asking if it should be passed via docker-compose? Yes, if a user needs to set (or pass)
TELEGRAM_TOKENit has to be defined/declared in the composeThere was a problem hiding this comment.
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Fixed