pijul 0.7.2

A patch-based distributed version control system, easy to use and fast. Command-line interface.
use clap::{SubCommand, ArgMatches, Arg};

use error::Error;
use commands::{BasicOptions, StaticSubcommand, default_explain};
use libpijul::DEFAULT_BRANCH;
use libpijul::fs_representation::read_patch;
use meta::{Meta, Repository, DEFAULT_REMOTE};
use super::ask;

pub fn invocation() -> StaticSubcommand {
    return SubCommand::with_name("push")
        .about("push to a remote repository")
        .arg(Arg::with_name("remote").help("Repository to push to."))
        .arg(Arg::with_name("repository").help("Local repository."))
        .arg(Arg::with_name("local_branch")
            .long("from-branch")
            .help("The branch to push from")
            .takes_value(true))
        .arg(Arg::with_name("remote_branch")
            .long("to-branch")
            .help("The branch to push into")
            .takes_value(true))
        .arg(Arg::with_name("all")
            .short("a")
            .long("all")
            .help("Answer 'y' to all questions")
            .takes_value(false))
        .arg(Arg::with_name("set-default")
             .long("set-default")
             .help("Used with --set-remote, sets this remote as the default push target.")
        )
        .arg(Arg::with_name("set-remote")
             .long("set-remote")
             .help("Set the name of this remote")
             .takes_value(true)
        )
        .arg(Arg::with_name("port")
            .short("p")
            .long("port")
            .help("Port of the remote ssh server.")
            .takes_value(true)
            .validator(|val| {
                let x: Result<u16, _> = val.parse();
                match x {
                    Ok(_) => Ok(()),
                    Err(_) => Err(val),
                }
            }));
}

#[derive(Debug)]
pub struct Params<'a> {
    pub remote_id: Option<&'a str>,
    pub set_remote: Option<&'a str>,
    pub yes_to_all: bool,
    pub set_default: bool,
    pub port: Option<u16>,
    pub local_branch: Option<&'a str>,
    pub remote_branch: &'a str,
}

pub fn parse_args<'a>(args: &'a ArgMatches) -> Params<'a> {
    Params {
        remote_id: args.value_of("remote"),
        set_remote: args.value_of("set-remote"),
        yes_to_all: args.is_present("all"),
        set_default: args.is_present("set-default"),
        port: args.value_of("port").and_then(|x| Some(x.parse().unwrap())),
        local_branch: args.value_of("local_branch"),
        remote_branch: args.value_of("remote_branch").unwrap_or(DEFAULT_BRANCH),
    }
}

pub fn run(arg_matches: &ArgMatches) -> Result<(), Error> {
    let opts = BasicOptions::from_args(arg_matches)?;
    let args = parse_args(arg_matches);
    let mut meta = Meta::load(&opts.repo_root).unwrap_or(Meta::new());
    let local_branch = if let Some(b) = args.local_branch {
        b.to_string()
    } else {
        opts.branch()
    };
    {
        let remote = meta.push(args.remote_id, args.port, Some(&opts.repo_root))?;
        debug!("remote: {:?}", remote);
        let mut session = try!(remote.session());
        let pushable =
            try!(session.pushable_patches(&local_branch, args.remote_branch, &opts.repo_root));
            let pushable = if !args.yes_to_all {
                let mut patches = Vec::new();
                let mut pushable:Vec<_> = pushable.into_iter().collect();
                pushable.sort_by(|&(_, _, a), &(_, _, b)| a.cmp(&b));
                for &(ref i, ref internal, _) in pushable.iter() {
                    patches.push((i.clone(), internal.clone(), read_patch(&opts.repo_root, i.as_ref())?))
                }
                try!(ask::ask_patches(ask::Command::Push, &patches))
            } else {
                pushable.into_iter().map(|(h, _, _)| h).collect()
            };
        try!(session.push(&opts.repo_root, args.remote_branch, &pushable));
    }

    info!("Saving meta");
    let set_remote = if args.set_default && args.set_remote.is_none() {
        Some(DEFAULT_REMOTE)
    } else {
        args.set_remote
    };
    if let (Some(set_remote), Some(remote_id)) = (set_remote, args.remote_id) {
        let mut repo = Repository::default();
        repo.address = remote_id.to_string();
        repo.port = args.port;

        meta.remote.insert(set_remote.to_string(), repo);
        if args.set_default {
            meta.push = Some(set_remote.to_string());
        }
        meta.save(&opts.repo_root)?;
    }
    Ok(())
}


pub fn explain(res: Result<(), Error>) {
    default_explain(res)
}