use cargo::core::Workspace;
use cargo::ops;
use cargo::util::{CliResult, Config};
use cargo::util::important_paths::find_root_manifest_for_wd;

#[derive(RustcDecodable)]
pub struct Options {
    flag_verbose: u32,
    flag_quiet: Option<bool>,
    flag_color: Option<String>,
    flag_manifest_path: Option<String>,
    flag_no_verify: bool,
    flag_no_metadata: bool,
    flag_list: bool,
    flag_allow_dirty: bool,
    flag_jobs: Option<u32>,
    flag_frozen: bool,
    flag_locked: bool,
}

pub const USAGE: &'static str = "
Assemble the local package into a distributable tarball

Usage:
    cargo package [options]

Options:
    -h, --help              Print this message
    -l, --list              Print files included in a package without making one
    --no-verify             Don't verify the contents by building them
    --no-metadata           Ignore warnings about a lack of human-usable metadata
    --allow-dirty           Allow dirty working directories to be packaged
    --manifest-path PATH    Path to the manifest to compile
    -j N, --jobs N          Number of parallel jobs, defaults to # of CPUs
    -v, --verbose ...       Use verbose output (-vv very verbose/build.rs output)
    -q, --quiet             No output printed to stdout
    --color WHEN            Coloring: auto, always, never
    --frozen                Require Cargo.lock and cache are up to date
    --locked                Require Cargo.lock is up to date
";

pub fn execute(options: Options, config: &Config) -> CliResult<Option<()>> {
    config.configure(options.flag_verbose,
                     options.flag_quiet,
                     &options.flag_color,
                     options.flag_frozen,
                     options.flag_locked)?;
    let root = find_root_manifest_for_wd(options.flag_manifest_path, config.cwd())?;
    let ws = Workspace::new(&root, config)?;
    ops::package(&ws, &ops::PackageOpts {
        config: config,
        verify: !options.flag_no_verify,
        list: options.flag_list,
        check_metadata: !options.flag_no_metadata,
        allow_dirty: options.flag_allow_dirty,
        jobs: options.flag_jobs,
    })?;
    Ok(None)
}