'use strict';

let nunjucks = require('nunjucks');

function createEnv(path, opts) {
    path = path || 'views';
    opts = opts || {};
    let envOptions = {
        autoescape: opts.autoescape || true,
        throwOnUndefined: opts.throwOnUndefined || false,
        trimBlocks: opts.trimBlocks || false,
        lstripBlocks: opts.lstripBlocks || false,
        watch: opts.watch || true,
        noCache: opts.noCache || true
    }
    let env = nunjucks.configure('views', envOptions);

    return env;
}

module.exports = async (ctx, next) => {
    let env = createEnv();
    ctx.render = function (views, model) {
        ctx.body = env.render(views, model);
    }
    await next();
}