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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::collections::HashMap;
use std::fmt::{Debug, Display};
use serde_json::Value;
use tera::{Error, Function, Tera};
use crate::TypedUrl;
struct TeraFunction<U>(U::Route)
where
U : TypedUrl;
impl<U> Function for TeraFunction<U>
where
U : TypedUrl + Display,
U::Route : Sync + Send,
{
fn call(
&self,
args : &HashMap<String, Value>,
) -> Result<Value, Error> {
let res =
U::from_route(&self.0, args).ok_or(Error::msg("missing keys"))?;
Ok(Value::String(res.to_string()))
}
}
pub fn register_typed_url<U>(tera : &mut Tera) -> ()
where
U : TypedUrl + Display + 'static,
U::Route : Sync + Send + Debug + Clone + Display + 'static,
{
for route in U::routes() {
tera.register_function(
&format!("{:?}Url", route),
TeraFunction::<U>(route.clone()),
)
}
}
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