package telegram

import (
	"errors"
	"strconv"

	json "github.com/pquerna/ffjson/ffjson"
	http "github.com/valyala/fasthttp"
)

// DeleteMessage delete a message, including service messages, with the following limitations:
// - A message can only be deleted if it was sent less than 48 hours ago.
// - Bots can delete outgoing messages in groups and supergroups.
// - Bots granted can_post_messages permissions can delete outgoing messages in channels.
// - If the bot is an administrator of a group, it can delete any message there.
// - If the bot has can_delete_messages permission in a supergroup or a channel, it can delete any message there.
// Returns True on success.
func (bot *Bot) DeleteMessage(chat interface{}, message int) (bool, error) {
	var args http.Args
	args.Add("message_id", strconv.Itoa(message)) // Identifier of the message to delete

	switch id := chat.(type) {
	case int64: // Unique identifier for the target chat...
		args.Add("chat_id", strconv.FormatInt(id, 10))
	case string: // ...or username of the target supergroup or channel (in the format @channelusername)
		args.Add("chat_id", id)
	default:
		return false, errors.New(errorInt64OrString)
	}

	resp, err := bot.post("deleteMessage", &args)
	if err != nil {
		return false, err
	}

	var data bool
	err = json.Unmarshal(*resp.Result, &data)
	return data, err
}