use super::DataManager;
use crate::model::Message;
use oiseau::{PostgresRow, cache::Cache, execute, get, params};
use tetratto_core::{
    auto_method,
    model::{Error, Result, auth::User},
};

impl DataManager {
    /// Get a [`Message`] from an SQL row.
    pub(crate) fn get_message_from_row(x: &PostgresRow) -> Message {
        Message {
            id: get!(x->0(i64)) as usize,
            created: get!(x->1(i64)) as usize,
            owner: get!(x->2(i64)) as usize,
            chat: get!(x->3(i64)) as usize,
            content: get!(x->4(String)),
            uploads: serde_json::from_str(&get!(x->5(String))).unwrap(),
        }
    }

    auto_method!(get_message_by_id(usize as i64)@get_message_from_row -> "SELECT * FROM t_messages WHERE id = $1" --name="message" --returns=Message --cache-key-tmpl="twny.message:{}");

    /// Create a new message in the database.
    ///
    /// # Arguments
    /// * `data` - a mock [`Message`] object to insert
    pub async fn create_message(&self, data: Message) -> Result<Message> {
        // check values
        if data.content.trim().len() < 2 {
            return Err(Error::DataTooShort("content".to_string()));
        } else if data.content.len() > 2048 {
            return Err(Error::DataTooLong("content".to_string()));
        }

        // ...
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = execute!(
            &conn,
            "INSERT INTO t_messages VALUES ($1, $2, $3, $4, $5, $6)",
            params![
                &(data.id as i64),
                &(data.created as i64),
                &(data.owner as i64),
                &(data.chat as i64),
                &data.content,
                &serde_json::to_string(&data.uploads).unwrap(),
            ]
        );

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        Ok(data)
    }

    /// Delete an existing message.
    pub async fn delete_message(&self, id: usize, user: &User) -> Result<()> {
        let message = self.get_message_by_id(id).await?;

        if message.owner != user.id {
            return Err(Error::NotAllowed);
        }

        // ...
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        // delete message
        let res = execute!(
            &conn,
            "DELETE FROM t_messages WHERE id = $1",
            params![&(id as i64)]
        );

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        // delete uploads
        for upload in message.uploads {
            if let Err(e) = self.1.delete_upload(upload).await {
                return Err(Error::MiscError(e.to_string()));
            }
        }

        // ...
        Ok(())
    }

    auto_method!(update_message_content(&str) -> "UPDATE t_messages SET content = $1 WHERE id = $2" --serde --cache-key-tmpl="twny.message:{}");
}