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use super::status_constraints::{parse_status_constraints, StatusConstraint};
use clap::Clap;

#[derive(Clap, Debug)]
#[clap(
    about = concat!(env!("CARGO_PKG_DESCRIPTION"), "\nUse long form --help for more details"),
    long_about = concat!(env!("CARGO_PKG_DESCRIPTION"), "\nUse short form -h for a less detailed overview"),
    version,
)]
pub struct Opts {
    #[clap(
        long, short,
        require_equals = true, min_values = 0,
        default_missing_value = "!0", parse(try_from_str = parse_status_constraints),
        value_name = "status",
        about = "After the process exited with a matching status code, rerun it",
        long_about = "\
            After the process exited with a matching status code (by default anything but 0 matches), rerun it.\n\
            Status can also be one or more ranges given as '[!][{>|<}][=]<status>...', which must all match the exit status of the process.\n\
            Option can be repeated, in which case one value matching suffices to cause a rerun.\n\n\
            Examples\n\
            Retry mycmd until it succeeds (exits with 0):\n\
            prcs -r mycmd\n\
            Rerun mycmd while it is successful or terminated by a signal (status > 128) other than program interrupt (SIGINT, status 130):\n\
            prcs -r=0 -r='>128!130' mycmd\n\n\
            If --stall is also specified, only stall when not rerunning anymore.\n\
            Rerun mycmd until it succeeds, then do nothing until interrupted:\n\
            prcs -s -r mycmd\n\
        "
    )]
    pub rerun: Option<Vec<Vec<StatusConstraint>>>,
    #[clap(
        long, short,
        require_equals = true, min_values = 0,
        default_missing_value = "0", parse(try_from_str = parse_status_constraints),
        value_name = "status",
        about = "After the process exited with a matching status code, do nothing until interrupted",
        long_about = "\
            After the process exited with a matching status code (by default only 0 matches), do nothing until interrupted.\n\
            Status can also be one or more ranges given as '[!][{>|<}][=]<status>...', which must all match the exit status of the process.\n\
            Option can be repeated, in which case one value matching suffices to cause stalling.\n\n\
            Examples\n\
            Do nothing until interrupted (assuming true exits with 0):\n\
            prcs -s true\n\
            If mycmd exits with status over 42, but not 100, or with status 21, do nothing until interrupted:\n\
            prcs -s='>42!100' -s=21 mycmd\n\
        "
    )]
    pub stall: Option<Vec<Vec<StatusConstraint>>>,

    pub command: String,
    pub args: Vec<String>,
}