import express, { Request, Response } from 'express';
  import { readFile, readFileSync } from 'fs';
  import path from 'path';
  import * as aryo from 'aryiosoft-template-engine';

  const templatePath: string = './src/templates';

  const templateLoader: aryo.types.ITemplateLoader = Object.freeze({
    load: (filename: string, metaData: any): string => {
        filename = path.resolve(templatePath, filename);
        return readFileSync(filename, 'utf-8');
    },
    loadAsync: (filename: string, metaData: any): Promise<string> => {
        return new Promise<string>((resolve, reject) => {
            filename = path.resolve(templatePath, filename);
            readFile(filename, 'utf-8', (err, content) => {
                if (err)
                    reject(err);
                else
                    resolve(content);
            });
        });
    }
});

const compiler: aryo.types.ICompiler = new aryo.Compiler(templateLoader, aryo.ConsoleLogger);
const templateEngine = new aryo.Engine(compiler, templateLoader);

const app = express();
const port = 3000;

const countries: = [
    { id: 100, code:'us', name: 'United State' },
    { id: 101, code:'de' name: 'Germany' },
    { id: 102, code:'UK', name: 'United Kingdom' },
    { id: 103, code:'FR' name: 'France' },
    { id: 104, code:'IT' name: 'Italy' },
];

app.get('/', (req: Request, resp: Response) => {
    try {
        let html = templateEngine.render({
            template: { template: 'index.html', isFile: true },
            templateLoadingMetaData: {},//Will be available inside the load-template functions.
            renderService: {},//Can contain functions, data, etc.
            cache: { key: 'c378b36b-ee9d-478d-bada-7ca70849b4c2', duration: 30/*30 Seconds*/ }
        }, {
            pageTitle: 'SYNC Rendring',
            author: {name:'Pouya', surname:'Faridi'},
            items: countries
        });

        resp.status(200)
            .contentType('text/html')
            .send(html);
    }
    catch (err: any) {
        resp.status(500)
            .contentType('text/plain')
            .send(err.message);
    }

});

app.get('/async', (req: Request, resp: Response) => {
    try {
        templateEngine.renderAsync({
            template: { template: 'index.html', isFile: true },
            templateLoadingMetaData: {}, //Will be available inside the load-template functions.
            renderService: {}, //Can contain functions, data, etc.
            cache: { key: 'c378b36b-ee9d-478d-bada-7ca70849b4c2', duration: 30 /*30 Seconds*/ }
        }, {
            pageTitle: 'ASYNC Rendring',
            author: {name:'Pouya', surname:'Faridi'},
            items: countries
        }).then(html => {
            resp.status(200)
                .contentType('text/html')
                .send(html);
        })
            .catch(err => {
                resp.status(500)
                    .contentType('text/plain')
                    .send(err.message);
            });


    }
    catch (err: any) {
        resp.status(500)
            .contentType('text/plain')
            .send(err.message);
    }

});

app.listen(port, () => {
    console.log(`Server is running on http://localhost:${port}`);
});