schist_desktop_gui/src/dialog/import_from_actualbudget_dialog.rs


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use actualbudget_to_schist_transformer::{
    actualbudget_state::read_actualbudget_state, schist_state::SchistState,
    transform_state::transform_state,
};
use anyhow::anyhow;
use diesel::{Connection, SqliteConnection};

pub fn import_from_actualbudget_dialog(
) -> Option<Result<SchistState, (std::path::PathBuf, anyhow::Error)>> {
    let path = rfd::FileDialog::new()
        .add_filter("SQLite database", &["sqlite"])
        .set_title("Import Actualbudget database")
        .pick_file();

    path.as_ref()
        .map(|path| import_from_actualbudget(path).map_err(|err| (path.clone(), err)))
}

fn import_from_actualbudget(path: &std::path::PathBuf) -> anyhow::Result<SchistState> {
    let path = path
        .to_str()
        .ok_or_else(|| anyhow!("Failed to stringify path: {:?}", path))?;
    SqliteConnection::establish(path)
        .map(|mut conn| read_actualbudget_state(&mut conn))?
        .map(transform_state)?
}