package sender

import (
	"context"
	"errors"
	"time"

	"rocketgit.ru/rsmon/worker/app/models"
	"rocketgit.ru/rsmon/worker/internal/tg"
)

// RunTelegram provides functionality.
func RunTelegram(message *models.Message) error {
	subject, _, _, _ := GetContent(message, time.Now())
	return tg.SendMessage(message.Contact.Value, subject.String())
}

// SendTelegramWithCredential delivers a Telegram message using the given bot
// credential. Phase 1 of docs/plans/worker-notifier-mvp.md: the worker holds
// the credential in memory after the init/config push and passes it here.
func SendTelegramWithCredential(chatID, subject, body string, cred *models.NotificationCredential) error {
	return SendTelegramWithCredentialContext(context.Background(), chatID, subject, body, cred)
}

// SendTelegramWithCredentialContext prevents handoff after cancellation. The
// tgbotapi client used by the legacy sender does not expose a context-aware
// Send method, so an already handed-off Telegram request cannot be interrupted.
func SendTelegramWithCredentialContext(ctx context.Context, chatID, subject, body string, cred *models.NotificationCredential) error {
	if err := ctx.Err(); err != nil {
		return err
	}
	if cred == nil {
		return errors.New("telegram credential is nil")
	}
	text := subject
	if body != "" {
		text = subject + "\n\n" + body
	}
	err := sendTelegramWithBot(chatID, text, cred)
	if ctx.Err() != nil {
		return ctx.Err()
	}
	return err
}

// sendTelegramWithBot is the low-level helper that the legacy RunTelegram
// (legacy secrets path) and SendTelegramWithCredential (worker wire path)
// both call. It derives an http API URL from the credential's APIURL.
func sendTelegramWithBot(chatID, text string, cred *models.NotificationCredential) error {
	// Use a credential-scoped helper so each Telegram credential can map to a
	// separate bot token/API URL.
	return tg.SendMessageWithToken(chatID, text, cred)
}