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use serde::{Deserialize, Serialize};

use crate::{Request, Sticker, API, TelegramClient};

#[derive(Debug, Clone, Deserialize)]
pub struct User {
    /// Unique identifier for this user or bot
    pub id: i64,

    /// User‘s or bot’s first name
    pub first_name: String,

    /// User‘s or bot’s last name
    pub last_name: Option<String>,

    /// User‘s or bot’s username
    pub username: Option<String>,

    /// IETF language tag of the user's language
    pub language_code: Option<String>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct Chat {
    /// Unique identifier for this chat. This number may be greater than 32 bits and some programming languages may have difficulty/silent defects in interpreting it. But it is smaller than 52 bits, so a signed 64 bit integer or double-precision float type are safe for storing this identifier.
    pub id: i64,

    /// Type of chat, can be either “private”, “group”, “supergroup” or “channel”
    #[serde(rename = "type")]
    pub chat_type: String,

    /// Title, for supergroups, channels and group chats
    pub title: Option<String>,

    /// Username, for private chats, supergroups and channels if available
    pub username: Option<String>,

    /// First name of the other party in a private chat
    pub first_name: Option<String>,

    /// Last name of the other party in a private chat
    pub last_name: Option<String>,

    /// True if a group has ‘All Members Are Admins’ enabled.
    pub all_members_are_administrators: Option<bool>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct Message {
    /// Unique message identifier inside this chat
    pub message_id: i64,

    /// Sender, empty for messages sent to channels
    pub from: Option<User>,

    /// Date the message was sent in Unix time
    pub date: i64,

    /// Message text
    pub text: Option<String>,

    /// Conversation the message belongs to
    /// - For sent messages, the first available identifier of the chat
    /// - For messages forwarded to the chat, the identifier of the original chat
    /// - For messages in channels, the identifier of the channel is contained in the `chat_id` field
    pub chat: Chat,

    /// For forwarded messages, sender of the original message
    pub forward_from: Option<User>,

    /// For messages forwarded from channels, information about the original channel
    pub forward_from_chat: Option<Chat>,

    /// For messages forwarded from channels, identifier of the original message in the channel
    pub forward_from_message_id: Option<i64>,

    /// For messages forwarded from channels, signature of the post author if present
    pub forward_signature: Option<String>,

    /// Sender's name for messages forwarded from users who disallow adding a link to their account in forwarded messages
    pub forward_sender_name: Option<String>,

    /// For forwarded messages, date the original message was sent in Unix time
    pub forward_date: Option<i64>,

    /// For replies, the original message. Note that the Message object in this field will not contain further `reply_to_message` fields even if it itself is a reply.
    pub reply_to_message: Option<i64>,

    /// Sticker for messages with a sticker
    pub sticker: Option<Sticker>,
}

#[derive(Debug, Serialize, Clone)]
pub struct SendMessageRequest {
    /// Unique identifier for the target chat or username of the target
    pub chat_id: i64,

    /// Text of the message to be sent
    pub text: String,

    /// If the message is a reply, ID of the original message
    pub reply_to_message_id: Option<i64>,
}

impl Request for SendMessageRequest {}

impl<T: TelegramClient> API<T> {
    pub async fn send_message(&self, req: &SendMessageRequest) -> anyhow::Result<Message> {
        self.client.post("sendMessage", req).await
    }
}