telega/error

Types

TelegaError

pub type TelegaError {
  TelegramApiError(error_code: Int, description: String)
  FetchError(error: String)
  JsonDecodeError(error: json.DecodeError)
  BotHandleUpdateError(reason: String)
  ApiToRequestConvertError
  SetWebhookError
  NoSessionSettingsError
  RegistryStartError(reason: String)
  BotStartError(reason: actor.StartError)
  ChatInstanceStartError(reason: actor.StartError)
  FileNotFoundError
  DecodeUpdateError(reason: String)
  UnknownUpdateError(update: types.Update)
  ActorError(reason: String)
  RouterError(reason: String)
  SupervisorStartError(reason: actor.StartError)
  ShutdownError(reason: String)
}

Constructors

```
TelegramApiError(error_code: Int, description: String)
```
Returned by Bot API if server returns ok: false, indicating that your API request was invalid and failed
```
FetchError(error: String)
```
Returned if the Bot API server could not be reached or the request failed
```
JsonDecodeError(error: json.DecodeError)
```
Returned if the JSON response from the Bot API could not be decoded
```
BotHandleUpdateError(reason: String)
```
Returned if the bot failed to call handle_update
```
ApiToRequestConvertError
```
Returned if the bot failed to convert API request to HTTP request
```
SetWebhookError
```
```
NoSessionSettingsError
```
```
RegistryStartError(reason: String)
```
```
BotStartError(reason: actor.StartError)
```

ChatInstanceStartError(reason: actor.StartError)

```
FileNotFoundError
```
```
DecodeUpdateError(reason: String)
```
```
UnknownUpdateError(update: types.Update)
```
Occurs when the update is not handled by any handler
```
ActorError(reason: String)
```
General actor error (e.g., from polling)
```
RouterError(reason: String)
```

SupervisorStartError(reason: actor.StartError)

```
ShutdownError(reason: String)
```

Values

is_message_cant_be_edited

</>

pub fn is_message_cant_be_edited(
  error error: TelegaError,
) -> Bool

The message exists but cannot be edited (e.g. not sent by the bot).

The Bot API has no structured error codes, so a case-insensitive substring match on the 400 description is the only way to classify this error.

is_message_not_found

</>

pub fn is_message_not_found(error error: TelegaError) -> Bool

The message to edit no longer exists (deleted by the user or too old).

The Bot API has no structured error codes, so a case-insensitive substring match on the 400 description is the only way to classify this error.

is_message_not_modified

</>

pub fn is_message_not_modified(error error: TelegaError) -> Bool

The edit was a no-op: new content equals the current one. Safe to treat as success.

The Bot API has no structured error codes, so a case-insensitive substring match on the 400 description is the only way to classify this error.

to_string

</>

pub fn to_string(error: TelegaError) -> String

try

</>

pub fn try(
  result: Result(a, TelegaError),
  to to_error: fn(TelegaError) -> e,
  fun fun: fn(a) -> Result(b, e),
) -> Result(b, e)

Helper to replace result.try for api call and error mapping.