const fs = require('fs');
const path = require('path');

const TILED_DIR = path.join(__dirname, '../assets/tiled');
const ASSETS_ROOT = path.join(__dirname, '../assets');

// Configuration
const TMX_FILENAME = 'Faza1_Nova.tmx';
const TSX_FILENAME = 'Buildings.tsx';
const MAP_WIDTH = 80;
const MAP_HEIGHT = 80;

// Gather all images
const imageFiles = [];
const sourceDirs = ['buildings', 'terrain', 'props'];

let tileIdCounter = 0;
let tilesXml = '';

sourceDirs.forEach(dirName => {
    const fullPath = path.join(ASSETS_ROOT, dirName);
    if (fs.existsSync(fullPath)) {
        const files = fs.readdirSync(fullPath);
        files.forEach(file => {
            if (file.toLowerCase().endsWith('.png')) {
                // Determine relative path from assets/tiled/ to assets/dir/file
                // assets/tiled -> assets/dir = ../dir
                const relativePath = `../${dirName}/${file}`;

                tilesXml += ` <tile id="${tileIdCounter}">\n`;
                tilesXml += `  <image source="${relativePath}"/>\n`; // Let Tiled detect size
                tilesXml += ` </tile>\n`;

                tileIdCounter++;
            }
        });
    }
});

// 1. Generate TSX (Tileset)
const tsxContent = `<?xml version="1.0" encoding="UTF-8"?>
<tileset version="1.10" tiledversion="1.11.0" name="Buildings" tilewidth="256" tileheight="256" tilecount="${tileIdCounter}" columns="0">
 <grid orientation="orthogonal" width="1" height="1"/>
${tilesXml}
</tileset>`;

fs.writeFileSync(path.join(TILED_DIR, TSX_FILENAME), tsxContent);
console.log(`✅ Created tileset: ${TSX_FILENAME} with ${tileIdCounter} tiles.`);

// 2. Generate TMX (Map)
// Create empty CSV data (all zeros)
const csvData = new Array(MAP_WIDTH * MAP_HEIGHT).fill(0).join(',');

const tmxContent = `<?xml version="1.0" encoding="UTF-8"?>
<map version="1.10" tiledversion="1.11.0" orientation="orthogonal" renderorder="right-down" width="${MAP_WIDTH}" height="${MAP_HEIGHT}" tilewidth="48" tileheight="48" infinite="0" nextlayerid="5" nextobjectid="1">
 <properties>
  <property name="music" value="farm_theme"/>
 </properties>
 <tileset firstgid="1" source="${TSX_FILENAME}"/>
 <layer id="1" name="Ground" width="${MAP_WIDTH}" height="${MAP_HEIGHT}">
  <data encoding="csv">
${csvData}
</data>
 </layer>
 <layer id="2" name="Objects" width="${MAP_WIDTH}" height="${MAP_HEIGHT}">
  <data encoding="csv">
${csvData}
</data>
 </layer>
 <layer id="3" name="Collision" width="${MAP_WIDTH}" height="${MAP_HEIGHT}" opacity="0.5">
  <data encoding="csv">
${csvData}
</data>
 </layer>
 <objectgroup id="4" name="Audio_Zones"/>
</map>`;

fs.writeFileSync(path.join(TILED_DIR, TMX_FILENAME), tmxContent);
console.log(`✅ Created map: ${TMX_FILENAME} (${MAP_WIDTH}x${MAP_HEIGHT}) linked to ${TSX_FILENAME}.`);