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use std::ops::Not;

use crate::requests::*;
use crate::types::*;

/// Use this method to pin a message in a supergroup or a channel.
/// The bot must be an administrator in the chat for this to work
/// and must have the ‘can_pin_messages’ admin right in the supergroup
/// or ‘can_edit_messages’ admin right in the channel.
#[derive(Debug, Clone, PartialEq, PartialOrd, Serialize)]
#[must_use = "requests do nothing unless sent"]
pub struct PinChatMessage {
    chat_id: ChatRef,
    message_id: MessageId,
    #[serde(skip_serializing_if = "Not::not")]
    disable_notification: bool,
}

impl Request for PinChatMessage {
    type Type = JsonRequestType<Self>;
    type Response = JsonTrueToUnitResponse;

    fn serialize(&self) -> Result<HttpRequest, Error> {
        Self::Type::serialize(RequestUrl::method("pinChatMessage"), self)
    }
}

impl PinChatMessage {
    fn new<C, M>(chat: C, message: M) -> Self
    where
        C: ToChatRef,
        M: ToMessageId,
    {
        Self {
            chat_id: chat.to_chat_ref(),
            message_id: message.to_message_id(),
            disable_notification: false,
        }
    }

    pub fn disable_notification(&mut self) -> &mut Self {
        self.disable_notification = true;
        self
    }
}

pub trait CanPinMessage {
    fn pin(&self) -> PinChatMessage;
}

impl<M> CanPinMessage for M
where
    M: ToMessageId + ToSourceChat,
{
    fn pin(&self) -> PinChatMessage {
        PinChatMessage::new(self.to_source_chat(), self.to_message_id())
    }
}