import simpleGit from 'simple-git';
import { restartService } from './serviceHandler.mjs'
import { launchProcess } from './subprocessHandler.mjs'

const git = simpleGit();

// Function to check for updates
export const checkForUpdates = async () => {
    try {
        // Fetch remote changes
        await git.fetch();

        // Get the latest commit hash
        const latestCommitHash = await git.revparse(['@{u}']);

        // Compare with the local commit hash
        const localCommitHash = await git.revparse(['HEAD']);

        if (latestCommitHash !== localCommitHash) {
            console.log('An update is available. Updating...');

            // Check if there have been any changes to the code
            const gitStatus = await git.status()
            console.log(gitStatus);
            if (gitStatus.modified.length > 0){
                // There is locally modified code
                console.log("There is locally modified code, resetting...");
                await git.stash();
                await git.reset('hard', ['origin/master']);
            }

            // Pull the latest changes from the remote repository
            await git.pull();

            // Run the post-update script
            console.log('Running post-update script...');
            await launchProcess("bash", ['./post-update.sh'], true);

            // Restart the application to apply the updates
            console.log('Update completed successfully. Restarting the application...');
            restartApplication();

            return true
        } else {
            console.log('The application is up to date.');
            return false
        }
    } catch (error) {
        console.error('Error checking for updates:', error);
    }
}

// Function to restart the application
export const restartApplication = () => {    
    console.log('Restarting the application...');
    restartService('discord-radio-bot');
}