Translations Crowdin-compatible webhook, for Amazon AWS Lambda, using NodeJS 8.10.

settings.json

{
    "key": "",
    "discord": {
        "endpoint": "https://canary.discordapp.com/api/webhooks",
        "channel": "",
        "key": ""
    },
    "projects": {
        "3ds-guide": "3DS Guide",
        "vita-guide": "PS Vita Guide",
        "guide-landing": "Guide Landing",
        "switch-guide": "Switch Guide",
        "3ds-devguide": "3DS Dev Guide",
        "wii-u-guide": "Wii U Guide"
    },
    "languages": {
        "af": "Afrikaans", "ar": "Arabic", "ca": "Catalan", "zh-CN": "Chinese Simplified", "zh-TW": "Chinese Traditional",
        "cs": "Czech", "da": "Danish", "nl": "Dutch", "fi": "Finnish", "fr": "French", "de": "German", "el": "Greek",
        "he": "Hebrew", "hu": "Hungarian", "id": "Indonesian", "it": "Italian", "ja": "Japanese", "ko": "Korean",
        "ms": "Malay", "no": "Norwegian", "en-PT": "Pirate English", "pl": "Polish", "pt-PT": "Portuguese", "pt-BR": "Portuguese (Brazilian)",
        "ro": "Romanian", "ru": "Russian", "sr": "Serbian (Cyrillic)", "es-ES": "Spanish", "sv-SE": "Swedish", "th": "Thai",
        "tr": "Turkish", "uk": "Ukrainian", "vi": "Vietnamese"
    },
    "flags": {
        "en-PT": "<:flag_enpt:527182931417104416>",
        "el": ":flag_gr:"
    }
}

translation_webhook.js

const request = require('request');
const settings = require('./settings.json');
const endpoint = `${settings.discord.endpoint}/${settings.discord.channel}/` +
           `${settings.discord.key}`;

exports.handler = (event, context, callback) => {
    const done = (err, res) => callback(null, {
        statusCode: err ? '400' : '200',
        body: JSON.stringify(err ? err.message : res),
        headers: {
            'Content-Type': 'application/json',
        },
    });
    
    let channel = event.pathParameters.channel;
    let key = event.pathParameters.key;
    let language = event.queryStringParameters.language;
    let project = event.queryStringParameters.project;

    // Verify if required parameters have been set
    if (typeof channel === 'undefined' || typeof key === 'undefined' ||
        typeof language === 'undefined' || typeof project === 'undefined' ||
        language.trim() === '' || project.trim() === '') {
        
        done(new Error('Invalid request (01)'));
        return;
    }
    
    // Validate key
    if (key !== settings.key) {
        done(new Error('Invalid request (02)'));
        return;
    }
    
    // Validate channel
    if (channel !== settings.discord.channel) {
        done(new Error('Invalid request (03)'));
        return;
    }
    
    // Validate project code
    if (!settings.projects.hasOwnProperty(project)) {
        done(new Error('Invalid request (04)'));
        return;
    }
    
    // Validate language code
    if (!settings.languages.hasOwnProperty(language)) {
        done(new Error('Invalid request (05)'));
        return;
    }
    
    let projectName = settings.projects[project];
    let languageName = settings.languages[language];
    let text = '';

    let flag = ` :flag_${language.substring(0, 2)}:`;
    if (language.length === 5) {
        flag = ` :flag_${language.substring(3, 5).toLowerCase()}:`;
    }
    if (settings.flags.hasOwnProperty(language)) {
        flag = ` ${settings.flags[language]}`;
    }
    
    if (event.resource.endsWith('/completed')) {
        text = `${projectName}: ${languageName}${flag} is now **fully translated**! Time to proofread!`;
    } else if (event.resource.endsWith('/verified')) {
        text = `${projectName}: ${languageName}${flag} is now **completed and verified**!`
    } else {
        done(new Error('Invalid request (06)'));
        return;
    }
    
    let req = { url: endpoint, form: { content: text } };
    request.post(req, function(reqErr, reqResp, body){
        if (body !== '') {
            done(new Error(`Error from Discord: ${body}`))
        } else {
            done(null, 'Message sent: ' + text);
        }
    });
};