use std::sync::Arc;

use clap::Parser;
use color_eyre::Result;
use email::{backend::feature::BackendFeatureSource, config::Config};
use pimalaya_tui::{
    himalaya::backend::BackendBuilder,
    terminal::{cli::printer::Printer, config::TomlConfig as _},
};
use tracing::info;

use crate::{
    account::arg::name::AccountNameFlag, config::TomlConfig, envelope::arg::ids::EnvelopeIdsArgs,
    folder::arg::name::FolderNameOptionalFlag,
};

/// Mark as deleted the message associated to the given envelope id(s).
///
/// This command does not really delete the message: if the given
/// folder points to the trash folder, it adds the "deleted" flag to
/// its envelope, otherwise it moves it to the trash folder. Only the
/// expunge folder command truly deletes messages.
#[derive(Debug, Parser)]
pub struct MessageDeleteCommand {
    #[command(flatten)]
    pub folder: FolderNameOptionalFlag,

    #[command(flatten)]
    pub envelopes: EnvelopeIdsArgs,

    #[command(flatten)]
    pub account: AccountNameFlag,
}

impl MessageDeleteCommand {
    pub async fn execute(self, printer: &mut impl Printer, config: &TomlConfig) -> Result<()> {
        info!("executing delete message(s) command");

        let folder = &self.folder.name;
        let ids = &self.envelopes.ids;

        let (toml_account_config, account_config) = config
            .clone()
            .into_account_configs(self.account.name.as_deref(), |c: &Config, name| {
                c.account(name).ok()
            })?;

        let backend = BackendBuilder::new(
            Arc::new(toml_account_config),
            Arc::new(account_config),
            |builder| {
                builder
                    .without_features()
                    .with_delete_messages(BackendFeatureSource::Context)
            },
        )
        .without_sending_backend()
        .build()
        .await?;

        backend.delete_messages(folder, ids).await?;

        printer.out(format!("Message(s) successfully removed from {folder}!\n"))
    }
}