use anyhow::Result;
use super::modifier::{Modifier, ModifierKey, invert_bool};
use crate::models::context::ContextModel;
pub struct EqualsModifier;
impl Modifier for EqualsModifier {
fn key(&self) -> ModifierKey {
ModifierKey::Equals
}
fn apply(&self, value: &ContextModel, arg: &str) -> Result<ContextModel> {
let (pattern, invert) = if let Some(p) = arg.strip_suffix(":not") {
(p, true)
} else {
(arg, false)
};
let result = match value {
ContextModel::String(s) => ContextModel::Bool(s == pattern),
ContextModel::List(items) => {
let results: Vec<ContextModel> = items
.iter()
.map(|i| ContextModel::Bool(i.to_string() == pattern))
.collect();
ContextModel::List(results)
}
_ => anyhow::bail!("Modifier 'equals' expects a string or list"),
};
if invert {
Ok(invert_bool(result))
} else {
Ok(result)
}
}
}