#!/usr/bin/env node

const fetch = require('node-fetch');
const colors = require('colors');
const os = require('os');
const fs = require('fs');
const getopts = require('getopts');

const homeDir = os.homedir();
const configFile = `${homeDir}/.grafana-find.json`;

if (!fs.existsSync(configFile)) {
    console.error(`Configuration file not found: ${configFile}`.red);
    process.exit(1);
}

/* Pedir contraseña
-----------------
            const readline = require('readline');
            const rl = readline.createInterface({
                input: process.stdin,
                output: process.stdout
            });
            const answer = await new Promise(resolve => {
                rl.question('Are you sure? (Default: no) [yes|no] ', resolve);
            });
            rl.close();
*/

const findAll = `WHERE d.name LIKE '%EQUIPO %'`;
const apiKey = `Bearer eyJrIjoiaHczdnZsOGd5M0xNUHJwZ3V4MGpvQzV0QVNGblpySloiLCJuIjoiZmluZEFsbF9HcmFmYW5hIiwiaWQiOjF9`;

const config = require(configFile);
const grafanaUrl = config.grafanaUrl;

const grafanaApi = `${grafanaUrl}/api`;
const urlDashboards = `${grafanaApi}/search`;
const urlUID = `${grafanaApi}/dashboards/uid/`;
let numberOfDashboards = 0;
let numberOfObjects = 0;
let numberOfVariables = 0;
let titlePanels = new Array;

const regexRawSQL = new RegExp(findAll, 'i');

async function main(){

    console.clear();
    console.log(colors.green.bold(`-------------------- Starting process --------------------`));

    let responseAllUID = await fetch(urlDashboards, {
        method: "GET",
        headers: {
            "Authorization": apiKey,
        }
    });
    let allUID = await responseAllUID.json();

    for (let i=0; i < allUID.length; i++) {

        let url = urlUID + allUID[i].uid;
        let response = await fetch(url, {
            method: "GET",
            headers: {
                "Authorization": apiKey,
            }
        });
        let data = await response.json();

        let isFound = false;

        const dashboard = data.dashboard;
        if (dashboard) {
            if (dashboard.panels)
            for (const panel of dashboard.panels) {
                if (panel.targets)
                for (const target of panel.targets) {
                    isFound = regexRawSQL.test(target.rawSql);
                    if (isFound) {
                        if (panel.title)
                            titlePanels.push(panel.title);
                        else
                            titlePanels.push("?");
                        numberOfObjects++;
                    }
                }
            }

            if (dashboard.templating)
            for (const list of dashboard.templating.list) {
                isFound = regexRawSQL.test(list.query);
                if (isFound) {
                    numberOfVariables++;
                    numberOfObjects++;
                }
            }
        }

        if (isFound) {
            const linkUrl = `${grafanaUrl}/d/${allUID[i].uid}`;
            if (titlePanels.length)
                console.log(colors.yellow(linkUrl), colors.white(titlePanels.toString().split(",")));
            else
                console.log(colors.yellow(linkUrl));
            if (numberOfVariables)
                console.log(colors.magenta(`> ${numberOfVariables} variables`));
            numberOfDashboards++;
        }

        titlePanels.pop();
        numberOfVariables=0;
    }

    if (numberOfDashboards==0)
        console.log(`No results found`.red);
    else 
        console.log(colors.green.bold(`---- Have been found ${numberOfObjects} results in ${numberOfDashboards} dashboards ----`));

}
main();