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use nu_engine::{command_prelude::*, get_full_help};

#[derive(Clone)]
pub struct Date;

impl Command for Date {
    fn name(&self) -> &str {
        "date"
    }

    fn signature(&self) -> Signature {
        Signature::build("date")
            .category(Category::Date)
            .input_output_types(vec![(Type::Nothing, Type::String)])
    }

    fn usage(&self) -> &str {
        "Date-related commands."
    }

    fn extra_usage(&self) -> &str {
        "You must use one of the following subcommands. Using this command as-is will only produce this help message."
    }

    fn search_terms(&self) -> Vec<&str> {
        vec![
            "time",
            "now",
            "today",
            "tomorrow",
            "yesterday",
            "weekday",
            "weekday_name",
            "timezone",
        ]
    }

    fn run(
        &self,
        engine_state: &EngineState,
        stack: &mut Stack,
        call: &Call,
        _input: PipelineData,
    ) -> Result<PipelineData, ShellError> {
        Ok(Value::string(get_full_help(self, engine_state, stack), call.head).into_pipeline_data())
    }
}