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Responsive emails made easy. NIF bindings for the MJML Rust implementation (mrml)

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mjml native mjml_nif src lib.rs
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native/mjml_nif/src/lib.rs 

use mrml;

use rustler::{Encoder, Env, NifStruct, NifResult, Term};



mod atoms {

    rustler::atoms! {

      ok,

      error

    }

}



#[derive(NifStruct)]

#[module = "Mjml.RenderOptions"]

pub struct Options {

    pub keep_comments: bool,

    pub social_icon_path: Option<String>

}



#[rustler::nif]

pub fn to_html<'a>(env: Env<'a>, mjml: String, render_options: Options) -> NifResult<Term<'a>> {

    return match mrml::parse(&mjml) {

        Ok(root) => {

            let options = mrml::prelude::render::Options{

                disable_comments: !render_options.keep_comments,

                social_icon_origin: render_options.social_icon_path

            };



            return match root.render(&options) {

                Ok(content) => Ok((atoms::ok(), content).encode(env)),

                Err(error) => Ok((atoms::error(), error.to_string()).encode(env)),

            };

        }

        Err(error) => Ok((atoms::error(), error.to_string()).encode(env)),

    };

}



rustler::init!("Elixir.Mjml.Native", [to_html]);