cksource/mgit2

/**
 * @license Copyright (c) 2003-2024, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md.
 */

'use strict';

const chalk = require( 'chalk' );

module.exports = {
    name: 'diff',

    skipCounter: true,

    get helpMessage() {
        const {
            italic: i,
            gray: g,
            magenta: m,
            underline: u
        } = chalk;

        return `
    ${ u( 'Description:' ) }
        Shows changes between commits, commit and working tree, etc. Works the same as "${ i( 'git diff' ) }" command. By default a flag 
        "${ m( '--color' ) }" is adding. You can cancel it using option "${ m( '--no-color' ) }".
        
    ${ u( 'Git Options:' ) }
        All options accepted by "${ i( 'git diff' ) }" are supported by mrgit. Everything specified after "--" is passed directly to the 
        "${ i( 'git diff' ) }" command.
        
        E.g.: "${ g( 'mrgit diff -- origin/master..master' ) }" will execute "${ i( 'git diff --color origin/master..master' ) }"
        `;
    },

    beforeExecute() {
        console.log( chalk.blue( 'Collecting changes...' ) );
    },

    /**
     * @param {CommandData} data
     * @returns {Promise}
     */
    execute( data ) {
        const execCommand = require( './exec' );
        const diffCommand = ( 'git diff --color ' + data.arguments.join( ' ' ) ).trim();

        return execCommand.execute( getExecData( diffCommand ) )
            .then( execResponse => {
                if ( !execResponse.logs.info.length ) {
                    return {};
                }

                return execResponse;
            } );

        function getExecData( command ) {
            return Object.assign( {}, data, {
                arguments: [ command ]
            } );
        }
    },

    afterExecute() {
        console.log( chalk.blue.italic( 'Logs are displayed from repositories which contain any change.' ) );
    }
};