//! Tiny JSON building for `--json` outputs: one document on stdout,

//! nothing else, with string escaping shared with the hooks payloads.

pub use oxy_core::repo::{json_array as arr, json_str as s};

pub fn obj<I: IntoIterator<Item = (&'static str, String)>>(pairs: I) -> String {

    let inner: Vec<String> = pairs

        .into_iter()

        .map(|(k, v)| format!("{}:{v}", s(k)))

        .collect();

    format!("{{{}}}", inner.join(","))

}

pub fn b(v: bool) -> String {

    v.to_string()

}

pub fn n<T: std::fmt::Display>(v: T) -> String {

    v.to_string()

}

pub fn opt<T>(v: Option<T>, f: impl Fn(T) -> String) -> String {

    match v {

        Some(x) => f(x),

        None => "null".into(),

    }

}

pub fn hashes(v: &[oxy_core::hash::ChangeHash]) -> String {

    arr(v.iter().map(|h| s(&h.to_hex())))

}