// Get the libraries
const fs = require('fs'); // For modifying and reading files
const express = require('express'); // For running a webserver in nodejs
const crypto = require('crypto'); // For encrypting passwords, I use sha512
// fromUnixTime(): Create a date from a Unix timestamp (in seconds). Decimal values will be discarded.
// format(): Return the formatted date string in the given format. The result may vary by locale.
// getUnixTime(): Get the seconds timestamp of the given date.
// find out more at https://date-fns.org/ \or docs: https://date-fns.org/docs/Getting-Started
const { fromUnixTime, format, getUnixTime } = require("date-fns") // A date utility library
const ejs = require("ejs")
const func = require("./functions.js")
const data = require("./data.js")

config = require('../config.json');

// Import the locale
try {
    locale = require(`../locales/${config.locale}.json`);
}
catch (error) {
    console.log("This locale doesn't exist, if you want to create it then you can create a PR")
    console.log("Locale selected: ", config.locale)
}

// Define stuff to do with express (nodejs webserver)
const app = express();
app.use(express.urlencoded({ extended: true }));
app.use(express.json());
app.use(express.static(config.root_path));
// set the view engine to ejs
app.set('view engine', 'ejs');
app.set('views', '../views')

// Express JS routes
const syndication_routes = require('./routes/syndication.js');
const indexes_routes = require('./routes/indexes.js');
const standard_pages_routes = require('./routes/standard_pages.js');
const forms_routes = require('./routes/forms.js');
const form_actions_routes = require('./routes/form_actions.js');

app.use('/', syndication_routes);
app.use('/', indexes_routes);
app.use('/', standard_pages_routes);
app.use('/', forms_routes);
app.use('/', form_actions_routes);

function perform_checks()
{
        console.log("Performing startup checks...")
        exit_flag = false
        required_values = ['site_admin','seperator','site_name','site_url','locale','port','cache_data','allow_signup','site_description','request_data_limit','enable_hitcount','charset','root_path','edit_account_base_url','new_post_url','signup_url','default_commenter_username','rss','atom','date_format','time_zone','css']
        // Perform some standard checks:

        // data_storage
        switch (config.data_storage)
        {
                case 'mysql':
                case 'json':
                        break
                default:
                        console.log("[ ERROR ] invalid value in `data_storage`\nPlease modify config.json. Value should be 'mysql' or 'json'.")
                        exit_flag = true
        }
        // auto_generated
        if (config.auto_generated)
        {
                console.log("[ ERROR ] `autogenerated` option set to true\nplease edit the config.json file to include your relevant information, then set to false or remove the autogenerated option.")
                exit_flag = true
        }
        // Check required values are present
        required_values.forEach((value) => { // Use a loop to check each required value is present
                if (typeof config[value] == 'undefined') {
                        exit_flag = true
                        console.log(`[ ERROR ] \`${value}\` is undefined\nPlease set it to something, read the documentation for help.`)
                }
        });
        if (exit_flag)
        {
                console.log("Exiting due to errors.")
                process.exit(1)
        }
}
perform_checks()


app.listen(config.port, () => {
	console.log(`Server is running at http://localhost:${config.port} webroot: ${config.root_path}`);
    console.log("Running in: ", __dirname)
});