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postsack/ps-importer/src/lib.rs

85 lines
2.5 KiB
Rust

use eyre::Result;
pub(crate) mod formats;
use formats::{shared, ImporterFormat};
use std::thread::JoinHandle;
use ps_core::{
crossbeam_channel::{self, unbounded},
Config, DatabaseLike, EmailEntry, EmailMeta, FormatType, Importerlike, Message,
MessageReceiver,
};
pub struct Importer<Format: ImporterFormat> {
config: Config,
format: Format,
}
impl<Format: ImporterFormat + 'static> Importer<Format> {
pub fn new(config: Config, format: Format) -> Self {
Self { config, format }
}
}
impl<Format: ImporterFormat + 'static> Importerlike for Importer<Format> {
fn import<Database: DatabaseLike + 'static>(
self,
database: Database,
) -> Result<(MessageReceiver, JoinHandle<Result<()>>)> {
let Importer { format, .. } = self;
let (sender, receiver) = unbounded();
let config = self.config;
let handle: JoinHandle<Result<()>> = std::thread::spawn(move || {
let outer_sender = sender.clone();
let processed = move || {
let emails = format.emails(&config, sender.clone())?;
let processed =
shared::database::into_database(&config, emails, sender.clone(), database)?;
Ok(processed)
};
let result = processed();
// Send the error away and map it to a crossbeam channel error
match result {
Ok(_) => Ok(()),
Err(e) => match outer_sender.send(Message::Error(e)) {
Ok(_) => Ok(()),
Err(e) => Err(eyre::Report::new(e)),
},
}
});
Ok((receiver, handle))
}
}
// FIXME:
// impl<T: Importerlike + Sized> Importerlike for Box<T> {
// fn import(self) -> Result<(MessageReceiver, JoinHandle<Result<()>>)> {
// (*self).import()
// }
// }
// pub fn importer(config: &Config) -> Box<dyn Importerlike> {
// match config.format {
// AppleMail => Box::new(applemail_importer(config.clone())),
// GmailVault => Box::new(gmail_importer(config.clone())),
// Mbox => Box::new(gmail_importer(config.clone())),
// }
// }
pub fn gmail_importer(config: Config) -> Importer<formats::Gmail> {
Importer::new(config, formats::Gmail::default())
}
pub fn applemail_importer(config: Config) -> Importer<formats::AppleMail> {
Importer::new(config, formats::AppleMail::default())
}
pub fn mbox_importer(config: Config) -> Importer<formats::Mbox> {
Importer::new(config, formats::Mbox::default())
}