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::{SourceFolderNameOptionalFlag, TargetFolderNameArg},
};

/// Copy the message associated to the given envelope id(s) to the
/// given target folder.
#[derive(Debug, Parser)]
pub struct MessageCopyCommand {
    #[command(flatten)]
    pub source_folder: SourceFolderNameOptionalFlag,

    #[command(flatten)]
    pub target_folder: TargetFolderNameArg,

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

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

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

        let source = &self.source_folder.name;
        let target = &self.target_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_copy_messages(BackendFeatureSource::Context)
            },
        )
        .without_sending_backend()
        .build()
        .await?;

        backend.copy_messages(source, target, ids).await?;

        printer.out(format!(
            "Message(s) successfully copied from {source} to {target}!\n"
        ))
    }
}