import data from './data.json' with { type: "json" };
import gm from "gm";
import * as fs from "fs";
import archiver from 'archiver';
import * as path from "path";
import { fileURLToPath } from 'url';

const myGm = gm.subClass({imageMagick: true});

const VERSION = process.env.npm_package_version;
const zipname = `pride-button-${VERSION}.zip`;

const position = {x: 4, y: 2, gravity: "NorthEast"}
const metadatas = []

function capitalizeFirstLetter(val) {
    return String(val).charAt(0).toUpperCase() + String(val).slice(1);
}

function createFilename(prideflag, text, now = false) {
    const adaptedText = text
        .replaceAll("⋅", "_")
        .replaceAll(" ", "_")
        .replaceAll("\n", '-')
        .normalize("NFD").replaceAll(/[\u0300-\u036f]/g, "")
        .replaceAll("&", "and")
        .replaceAll("+", "")
        .toLowerCase();
    return `${prideflag.name.en.toLowerCase()}-${adaptedText}${now?'-now':''}.gif`;
}

function createButton(source, x, y, text, gravity) {
    const turnedText = text
        .replaceAll("⋅", "-")
        .toUpperCase();

    return myGm(source)
    .font('./NFPixels-Regular.ttf', 10)
    .drawText(x-1, y, turnedText, gravity)
    .drawText(x+1, y, turnedText, gravity)
    .drawText(x, y+1, turnedText, gravity)
    .drawText(x, y-1, turnedText, gravity)
    .drawText(x-1, y-1, turnedText, gravity)
    .drawText(x+1, y+1, turnedText, gravity)
    .drawText(x-1, y+1, turnedText, gravity)
    .drawText(x+1, y-1, turnedText, gravity)
    .fill("#FFFFFF")
    .drawText(x, y, turnedText, gravity);
};

function createMetadatas(prideflag, text, now = false) {
    const filename = createFilename(prideflag, text, now);
    const textForAlt = text.replaceAll("\n", " ").toLowerCase();
    const alt = `Drapeau ${prideflag.name.fr.toLowerCase()} (${prideflag.alt.fr}) avec écrit "${textForAlt}${now?", now!": ""}"`
    const alten = `${capitalizeFirstLetter(prideflag.name.en)} flag (${prideflag.alt.en}) with written "${textForAlt}${now?", now!": ""}"`
    return {file:filename, alt:alt, localizedAlt:{en: alten, fr: alt}, text:textForAlt};
}

// Prepare folders

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

fs.mkdirSync(path.join(__dirname, 'build'),
    { recursive: true }); 
fs.mkdirSync(path.join(__dirname, 'output'),
    { recursive: true }); 
fs.mkdirSync(path.join(__dirname, 'tmp'),
    { recursive: true }); 


// Start generating

let count = 0;
let flagCount = 0;
const start = Date.now();

data.forEach(prideflag => {
    console.log(`- Creating flags for ${prideflag.name.en}`);
    const imageMetadata = {title:`Drapeau ${prideflag.name.fr.toLowerCase()} :`, list:[]};
    prideflag.texts.forEach(text => {
        const metadatas  = createMetadatas(prideflag, text, false)
        imageMetadata.list.push(metadatas);

        //console.log(`Creating button for text "${metadatas.text}" (${metadatas.file})`);
        createButton(prideflag.source, position.x, position.y, text, position.gravity)
            .write(`./output/${metadatas.file}`, function (err) {
                if (err) {
                    console.error(err);
                    throw err;
                };
            });
        count++;
    })

    if (prideflag.textsNow) {
        prideflag.textsNow.forEach(text => {
            const metadatas  = createMetadatas(prideflag, text, true)
            imageMetadata.list.push(metadatas);
    
            //console.log(`Creating button for text "${metadatas.text}" (${metadatas.file})`);
            createButton(prideflag.source, position.x+12, position.y, text, position.gravity)
                .write(`./tmp/${metadatas.file}`, function (err) {
                    if (err) {
                        console.error(err);
                        throw err;
                    };
                });
            setTimeout(() => {
                myGm(`./tmp/${metadatas.file}`)
                .composite("./sources/now.gif")
                .write(`./output/${metadatas.file}`, function (err) {
                    if (err) {
                        console.error(err);
                        throw err;
                    };
                });
            }, 100);
            
            count++;
        })
    }

    flagCount++;
    metadatas.push(imageMetadata);
});

fs.writeFile("./output/pridebuttons.json", JSON.stringify(metadatas), (err) => {
    if (err) {
      console.error(err);
      throw err;
    }
});

// Zip the folder

var output = fs.createWriteStream(`build/${zipname}`);
var archive = archiver('zip');
var size = 0;

output.on('close', function () {
    size = archive.pointer();
    console.log('archiver has been finalized and the output file descriptor has closed.');
});

archive.on('error', function(err){
    throw err;
});

archive.pipe(output);

// append files from a sub-directory, putting its contents at the root of archive
archive.directory('output/', false);

await archive.finalize();

// Show final result

const millis = Date.now() - start;
setTimeout(() => {
    console.log("");
    console.log("-----------------------");
    console.log("");
    console.log(`Pride Button version ${VERSION}`);
    console.log(`Generation finished in ${millis / 1000}s`);
    console.log(`${flagCount} flags processed`);
    console.log(`${count} files generated`);
    console.log(`Archive name : ${zipname}`);
    console.log(`Archive size : ${size/1000} kB`);
}, 500);