"errors"
"fmt"
"io"
- "log"
+ "log/slog"
"net/http"
"os"
"path/filepath"
}
var config TelegramConfig
+
decoder := json.NewDecoder(bytes.NewReader(data))
decoder.DisallowUnknownFields()
+
err = decoder.Decode(&config)
if err == nil && !errors.Is(decoder.Decode(&struct{}{}), io.EOF) {
err = errors.New("data after the JSON object")
// newTelegramBot returns the bot of owner on api. The offset file is at
// offsetPath, and logger gets the failures. No log line holds the text of a
// message.
-func newTelegramBot(api *TelegramAPI, owner int64, offsetPath string, logger *log.Logger) *TelegramBot {
+func newTelegramBot(api *TelegramAPI, owner int64, offsetPath string, logger *slog.Logger) *TelegramBot {
return &TelegramBot{
api: api,
owner: owner,
api *TelegramAPI
owner int64
offsetPath string
- logger *log.Logger
+ logger *slog.Logger
minWait time.Duration
maxWait time.Duration
}
b.mutex.Lock()
+
b.queue = append(b.queue, event)
b.mutex.Unlock()
defer cancel()
var sender sync.WaitGroup
+
sender.Add(1)
+
go func() {
defer sender.Done()
}()
err := b.poll(ctx, l, whatsapp)
+
cancel()
sender.Wait()
switch event.Kind {
case "busy":
busy = true
+
b.typing(ctx)
ticker.Reset(telegramTypingInterval)
case "idle":
outage := &TelegramOutage{
logger: b.logger,
- loss: "cannot get messages from Telegram",
- back: "messages from Telegram come again",
+ loss: "receive failed",
+ back: "receive back",
}
wait := b.minWait
}
outage.End()
+
wait = b.minWait
for _, update := range updates {
if ctx.Err() != nil {
func (b *TelegramBot) handle(ctx context.Context, l *TurnLoop, whatsapp *WhatsApp, update TelegramUpdate) error {
message := update.Message
if message == nil || message.Chat.Type != "private" || message.Chat.ID != b.owner || message.From == nil || message.From.ID != b.owner {
- b.logger.Print("a Telegram message is ignored, because it is not from the owner in the private chat")
+ b.logger.Info("message ignored: not from the owner")
+
return nil
}
}
var answer *TelegramError
+
if len(part.entities) > 0 && errors.As(err, &answer) && answer.Status == http.StatusBadRequest {
- b.logger.Printf("a reply goes as plain text, because Telegram refused its formatting: %v", err)
+ b.logger.Warn("reply sent as plain text", "err", err)
+
part.entities = nil
continue
}
if !retry {
- b.logger.Printf("a reply to Telegram is lost: %v", err)
+ b.logger.Error("reply lost", "err", err)
+
return
}
}
if telegramRejected(err) {
- b.logger.Printf("a reply goes with simpler formatting, because Telegram refused its full formatting: %v", err)
+ b.logger.Warn("reply sent with simple formatting", "err", err)
+
for _, part := range telegramReplyParts(telegramUnescapeTags(markdown)) {
b.deliver(ctx, part)
}
}
if !retry {
- b.logger.Printf("a reply to Telegram is lost: %v", err)
+ b.logger.Error("reply lost", "err", err)
+
return
}
func (b *TelegramBot) sendOutage() *TelegramOutage {
return &TelegramOutage{
logger: b.logger,
- loss: "cannot send replies to Telegram",
- back: "replies go to Telegram again",
+ loss: "send failed",
+ back: "send back",
}
}
// nothing. The next answer of Telegram logs back and the length of the outage.
// loss and back say what the user loses and gets again.
type TelegramOutage struct {
- logger *log.Logger
+ logger *slog.Logger
loss string
back string
start time.Time
}
o.start = time.Now()
- o.logger.Printf("%s: %v (next try in %s)", o.loss, err, durationText(delay))
+ o.logger.Warn(o.loss, "err", err, "retry", delay)
}
// End logs the end of the outage that runs, with its length.
return
}
- o.logger.Printf("%s, after %s", o.back, durationText(time.Since(o.start)))
+ o.logger.Info(o.back, "after", time.Since(o.start))
+
o.start = time.Time{}
}
}
var file TelegramOffsetFile
+
err = json.Unmarshal(data, &file)
if err != nil {
return 0, fmt.Errorf("%s: %w", path, err)
// never cuts a character.
func telegramSplitMessage(text string, limit int) []string {
var parts []string
+
for {
end := telegramPrefixEnd(text, limit)
if end == len(text) {
// not cut an entity of telegramEscapeTags. It never cuts a character.
func telegramSplitRich(markdown string, limit int) []string {
var parts []string
+
for len(markdown) > limit {
cut, fence, opening := telegramRichCut(markdown, limit)
if fence == "" {
// so each cut makes the rest shorter.
func telegramRichCut(markdown string, limit int) (int, string, string) {
blank, line, code := 0, 0, 0
+
var fence, opening, inFence, inOpening string
+
for start := 0; start < limit; {
end := strings.IndexByte(markdown[start:], '\n')
if end < 0 || start+end+1 > limit {
end += start + 1
text := strings.TrimRight(markdown[start:end], "\r\n")
- _, opens := telegramCodeFence(text)
+ _, opens := markdownCodeFence(text)
switch {
case fence != "":
- if telegramClosesFence(text, fence) {
+ if markdownClosesFence(text, fence) {
fence = ""
} else if end > len(opening)+1 && end+len(fence)+1 <= limit {
code, inFence, inOpening = end, fence, opening
// An entity that crosses a cut becomes one entity in each part.
func telegramSplitEntities(text string, entities []TelegramEntity, limit int) []TelegramPart {
var parts []TelegramPart
+
start := 0
for _, part := range telegramSplitMessage(text, limit) {
end := start + telegramUTF16Units(part)
+
var kept []TelegramEntity
+
for _, entity := range entities {
from := max(entity.Offset, start)
to := min(entity.Offset+entity.Length, end)
projects / onechat / blobdiff