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use async_trait::async_trait;
use log::{debug, info};
use thiserror::Error;
use utf7_imap::encode_utf7_imap as encode_utf7;

use crate::{imap::ImapSessionSync, Result};

use super::AddFolder;

#[derive(Error, Debug)]
pub enum Error {
    #[error("cannot create imap folder {1}")]
    CreateFolderError(#[source] imap::Error, String),
}

#[derive(Clone, Debug)]
pub struct AddFolderImap {
    session: ImapSessionSync,
}

impl AddFolderImap {
    pub fn new(session: &ImapSessionSync) -> Option<Box<dyn AddFolder>> {
        let session = session.clone();
        Some(Box::new(Self { session }))
    }
}

#[async_trait]
impl AddFolder for AddFolderImap {
    async fn add_folder(&self, folder: &str) -> Result<()> {
        info!("creating imap folder {folder}");

        let mut session = self.session.lock().await;

        let folder = session.account_config.get_folder_alias(folder)?;
        let folder_encoded = encode_utf7(folder.clone());
        debug!("utf7 encoded folder: {folder_encoded}");

        session
            .execute(
                |session| session.create(&folder_encoded),
                |err| Error::CreateFolderError(err, folder.clone()).into(),
            )
            .await?;

        Ok(())
    }
}