if (Deno.args.length !== 2) {
    console.log("Usage: ./genmap.js <path-to-map-file> <output-fname>");
    Deno.exit(1);
}

const mapFile = Deno.args[0];
const outFname = Deno.args[1];

var out = "";

const data = await Deno.readTextFile(mapFile);
const map = JSON.parse(data);

let layer = map.layers[0];

out += `const Tile = @import("../sh0rk.zig").Tile;\n\n`;

out += `pub const map = [${layer.data.length}]Tile{\n   `;

layer.data.forEach((tile, index) => {
    tile -= 1;
    const tileY = Math.trunc(tile / layer.height);
    const tileX = tile % layer.width;
    out += ` Tile{.x = ${tileX}, .y = ${tileY}},`;
    if (index % 10 === 0) {
        out += "\n   ";
    }
});

out += "\n};\n";

await Deno.writeTextFile(outFname, out);