use crate::{
    opt::{ActiveOpt, OptKind},
    Command,
};

pub struct Context {
    opts: Vec<ActiveOpt>,
    cmd: Command,
}

impl Context {
    pub(crate) fn new(cmd: Command, opts: Vec<ActiveOpt>) -> Self {
        Self { opts, cmd }
    }

    /// Checks for the existance of a flag
    pub fn flag(&self, name: &str) -> bool {
        self.opts
            .iter()
            .any(|o| o.definition.name == name && matches!(o.definition.kind, OptKind::Flag))
    }

    /// Returns the value of an option if one exists
    pub fn get_string(&self, name: &str) -> Option<String> {
        self.opts
            .iter()
            .find_map(|o| {
                if o.definition.name == name {
                    Some(o.raw_value.first().cloned())
                } else {
                    None
                }
            })
            .flatten()
    }

    /// Can be used to display the automatic help message for the current command.
    pub fn display_help(&self) {
        crate::command::print_command_help(&self.cmd, &vec![])
    }
}