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|
use chrono::{naive::Days, prelude::*};
use clap::{Args, Parser, Subcommand, ValueEnum};
use syn::manager::Manager;
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
#[command(subcommand)]
command: Option<Command>,
}
#[derive(Subcommand)]
enum Command {
/// track a new feed
Add(AddCommand),
/// list all entries in reverse chronological order
ListEntries(ListEntriesCommand),
/// list all feeds in reverse chronological order
ListFeeds,
/// refresh feeds
Pull(PullCommand),
}
impl Default for Command {
fn default() -> Self {
Self::ListEntries(ListEntriesCommand { cutoff: None })
}
}
#[derive(Args)]
struct AddCommand {
urls: Vec<String>,
}
#[derive(Args)]
struct ListEntriesCommand {
#[arg(value_name = "CUTOFF")]
cutoff: Option<u64>,
}
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, ValueEnum)]
enum ListTarget {
Feeds,
Entries,
}
#[derive(Args)]
struct PullCommand {
target: Option<String>,
}
pub trait PrintResult {
fn print(&self);
}
impl<T, E> PrintResult for Result<T, E>
where
T: std::fmt::Display,
E: std::fmt::Display,
{
fn print(&self) {
match self {
Ok(ok) => println!("{ok}"),
Err(err) => eprintln!("{err}"),
}
}
}
#[tokio::main(flavor = "current_thread")]
async fn main() {
let opts = Cli::parse();
match &opts.command.unwrap_or_default() {
Command::Add(AddCommand { urls }) => {
let mut manager = Manager::load().unwrap_or_else(|e| {
eprintln!("{e}");
Manager::default()
});
let (status, errors): (Vec<_>, Vec<_>) = manager
.add_feeds_and_pull(&urls)
.await
.into_iter()
.partition(Result::is_ok);
status.iter().for_each(PrintResult::print);
errors.iter().for_each(PrintResult::print);
manager.store().print();
}
Command::ListFeeds => {
let manager = Manager::load().unwrap_or_else(|e| {
eprintln!("{e}");
Manager::default()
});
manager.list_feeds().for_each(|f| println!("{f}"));
}
Command::ListEntries(ListEntriesCommand { cutoff }) => {
let manager = Manager::load().unwrap_or_else(|e| {
eprintln!("{e}");
Manager::default()
});
manager
.list_entries()
.filter(|entry| {
cutoff
.map(|c| Utc::now() - Days::new(c) <= entry.published)
.unwrap_or(true)
})
.for_each(|f| println!("{f}"));
}
Command::Pull(PullCommand { .. }) => {
let mut manager = Manager::load().unwrap_or_else(|e| {
eprintln!("{e}");
Manager::default()
});
let (status, errors): (Vec<_>, Vec<_>) =
manager.pull().await.into_iter().partition(Result::is_ok);
status
.into_iter()
.map(Result::unwrap)
.filter(|s| !s.is_empty())
.for_each(|s| println!("{s}"));
errors.iter().for_each(PrintResult::print);
manager.store().print();
}
}
}
|
