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use db;
use util;
use clap;
pub struct Command {
count: u64,
random: bool,
album: bool,
include: db::TimeWindow,
exclude: db::TimeWindow,
db: db::DB,
}
pub fn subcommand<'a, 'b>() -> clap::App<'a, 'b> {
clap::SubCommand::with_name("recommend")
.about("Recommends an artist or album to listen to")
.arg(
clap::Arg::with_name("count")
.default_value("20")
.help("number of results to return")
)
.arg(
clap::Arg::with_name("random")
.long("random")
.help("pick a random artist instead of by weight")
)
.arg(
clap::Arg::with_name("album")
.long("album")
.help("also choose a random album by the chosen artists")
)
.arg(
clap::Arg::with_name("include")
.long("include")
.default_value("yearly")
.possible_values(&["all", "yearly", "monthly", "weekly"])
)
.arg(
clap::Arg::with_name("exclude")
.long("exclude")
.default_value("weekly")
.possible_values(&["all", "yearly", "monthly", "weekly", "none"])
)
}
impl Command {
pub fn new<'a>(matches: &clap::ArgMatches<'a>) -> failure::Fallible<Command> {
Ok(Command {
count: matches.value_of("count").unwrap().parse()?,
random: matches.is_present("random"),
album: matches.is_present("album"),
include: db::parse_timewindow(matches.value_of("include").unwrap()),
exclude: db::parse_timewindow(matches.value_of("exclude").unwrap()),
db: db::DB::new(&util::db_path()?)?,
})
}
}
impl super::Command for Command {
fn run(&self) -> failure::Fallible<()> {
let mut artists = self.db.recommend_artists(
self.count,
self.random,
self.include,
self.exclude
)?;
if self.album {
artists = artists.iter().map(|artist| {
Ok(format!(
"{} - {}",
artist,
self.db.recommend_album(
&artist,
self.random,
self.include,
self.exclude
)?
))
}).collect::<failure::Fallible<Vec<String>>>()?;
}
for line in artists {
println!("{}", line);
}
Ok(())
}
}
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