# Author:   M. Dutt (hello@mditech.net)
# Date:     27/11/2023
# Purpose:  Laravel command to update the application (git pull and composer install) using Laravel scheduler.
#
# Running The Scheduler
# The schedule:run Artisan command will evaluate all of your scheduled tasks and determine if they need to run based on the server's current time.
# Create a cron job in your server
# * * * * *   cd /path/to/project && php artisan schedule:run >> storage/logs/cron.log 2>&1
#
# Directory structure
#  project-dir
#    app
#      Console
#        Commands
#          UpdateApp.php
#      Kernel.php
#
=========================================================
<?php
// app/Console/Kernal.php

namespace App\Console;

use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;

class Kernel extends ConsoleKernel
{
    /**
     * Define the application's command schedule. MD
     *
     */
    protected function schedule(Schedule $schedule): void
    {
        $schedule->command('mditech:update-app')            // Don't edit this line
        ->timezone('Asia/Kolkata')
        ->hourly()
        ->sendOutputTo('storage/logs/schedule.log')
        ->emailOutputTo('email@example.com')
        ->emailOutputOnFailure('email@example.com');
    }

    /**
     * Register the commands for the application.
     */
    protected function commands(): void
    {
        $this->load(__DIR__ . '/Commands');

        require base_path('routes/console.php');
    }
}

=========================================================
<?php
// app/Console/Commands/UpdateApp.php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Symfony\Component\Process\Process;

class UpdateApp extends Command
{
    protected $signature = 'mditech:update-app';

    protected $description = 'Pull files from GitHub';

    private $alreadyUpToDate;

    private $pullLog = [];

    private $composerLog = [];


    public function handle()
    {
        if (!$this->runPull()) {

            $this->error("An error occurred while executing 'git pull'. \nLogs:");

            foreach ($this->pullLog as $logLine) {
                $this->info($logLine);
            }

            return;
        }

        if ($this->alreadyUpToDate) {
            $this->info("The application is already up-to-date");
            return;
        }

        if (!$this->runComposer()) {

            $this->error("Error while updating composer files. \nLogs:");

            foreach ($this->composerLog as $logLine) {
                $this->info($logLine);
            }

            return;
        }

        $this->info("Succesfully updated the application.");
    }

    private function runPull()
    {

        $process = new Process(['git', 'pull']);
        $this->info("Running 'git pull'");

        $process->run(function ($type, $buffer) {
            $this->pullLog[] = $buffer;

            if ($buffer == "Already up to date.\n") {
                $this->alreadyUpToDate = TRUE;
            }
        });

        return $process->isSuccessful();
    }

    private function runComposer()
    {

        $process = new Process(['composer', 'install']);
        $this->info("Running 'composer install'");

        $process->run(function($type, $buffer) {
            $this->composerLog[] = $buffer;
        });

        return $process->isSuccessful();
    }
}