package telegram

// Update represents an incoming update from Telegram Bot Webhook.
type Update struct {
	UpdateID int64    `json:"update_id"`
	Message  *Message `json:"message,omitempty"`
}

// Message represents a Telegram message.
type Message struct {
	MessageID int64  `json:"message_id"`
	From      *User  `json:"from,omitempty"`
	Chat      Chat   `json:"chat"`
	Date      int64  `json:"date"`
	Text      string `json:"text,omitempty"`
	Caption   string `json:"caption,omitempty"`
}

// User represents a Telegram user or bot.
type User struct {
	ID           int64  `json:"id"`
	IsBot        bool   `json:"is_bot"`
	FirstName    string `json:"first_name"`
	LastName     string `json:"last_name,omitempty"`
	Username     string `json:"username,omitempty"`
	LanguageCode string `json:"language_code,omitempty"`
}

// Chat represents a Telegram chat (private, group, supergroup, channel).
type Chat struct {
	ID        int64  `json:"id"`
	Type      string `json:"type"`
	Title     string `json:"title,omitempty"`
	Username  string `json:"username,omitempty"`
	FirstName string `json:"first_name,omitempty"`
	LastName  string `json:"last_name,omitempty"`
}

// SendMessageRequest represents payload for Telegram sendMessage API.
type SendMessageRequest struct {
	ChatID                int64  `json:"chat_id"`
	Text                  string `json:"text"`
	ParseMode             string `json:"parse_mode,omitempty"`
	ReplyToMessageID      int64  `json:"reply_to_message_id,omitempty"`
	DisableWebPagePreview bool   `json:"disable_web_page_preview,omitempty"`
}

// APIResponse represents standard Telegram Bot API response envelope.
type APIResponse[T any] struct {
	OK          bool   `json:"ok"`
	Result      T      `json:"result,omitempty"`
	Description string `json:"description,omitempty"`
	ErrorCode   int    `json:"error_code,omitempty"`
}

// SetWebhookRequest represents payload for Telegram setWebhook API.
type SetWebhookRequest struct {
	URL            string   `json:"url"`
	SecretToken    string   `json:"secret_token,omitempty"`
	AllowedUpdates []string `json:"allowed_updates,omitempty"`
}

// WebhookInfo represents current Telegram webhook status.
type WebhookInfo struct {
	URL                  string `json:"url"`
	HasCustomCertificate bool   `json:"has_custom_certificate"`
	PendingUpdateCount   int    `json:"pending_update_count"`
	LastErrorDate        int64  `json:"last_error_date,omitempty"`
	LastErrorMessage     string `json:"last_error_message,omitempty"`
}