// Removed useless files, to speed up build process and make it clearer.
const path = require("path");
const fs = require("fs");
const readline = require("readline");

// cmdid current version
const read_cmdid = "cmdid.csv";
const read_cmdid_output = "cmdid.json";
const read_cmdid_output_gc = "cmdid_gc.json";

console.log(process.cwd());

//(TODO: add input file)
// folder gc auto-generated proto
const folder_proto_gc_gen =
  "../Grasscutter-Yuuki/src/generated/main/java/emu/grasscutter/net/proto/";
// file PacketOpcodes currently in use
const read_cmdid_gc =
  "../Grasscutter-Yuuki/src/main/java/emu/grasscutter/net/packet/PacketOpcodes.java";

//const read_cmdid = fs.readFileSync("cmdid.csv");
//const read_packetopcodes = fs.readFileSync("PacketOpcodes.java");

var data = [];
var data_gc = [];

var index_file_gen = 0;
var index_file_cmdid = 0;
var index_cmdid_gc = 0;
var index_cmdid_gc_out = 0;
function check_gen() {
  fs.readdir(folder_proto_gc_gen, function (err, files) {
    //handling error
    if (err) {
      return console.log("Unable to scan directory: " + err);
    }
    files.forEach(function (file) {
      index_file_gen++;
    });
    console.log("file proto gen: " + index_file_gen);
  });
}

// gen json file cmdid
function get_cmdid_json() {
  const inputStreamcmdid = fs.createReadStream(read_cmdid);
  var lineReadercmdid = readline.createInterface({
    input: inputStreamcmdid,
    terminal: false,
  });
  lineReadercmdid.on("line", function (line) {
    var config = line.split(",");
    var subdata = new Object();
    subdata["name"] = config[0];
    subdata["id"] = parseInt(config[1]);
    data.push(subdata);
    index_file_cmdid++;
  });
  lineReadercmdid.on("close", function () {
    console.log("found cmd id " + index_file_cmdid);
    var strNotes = JSON.stringify(data, null, 4);
    fs.writeFile(read_cmdid_output, strNotes, "utf8", function (err) {
      if (err) {
        console.log("An error occured while writing JSON Object to File.");
        return console.log(err);
      }
      console.log("JSON file has been saved.");
    });
  });
}

function get_cmdid_gc() {
  const inputStreamcmdid = fs.createReadStream(read_cmdid_gc);
  var lineReadercmdid = readline.createInterface({
    input: inputStreamcmdid,
    terminal: false,
  });
  lineReadercmdid.on("line", function (line) {
    var config = line.split(" = ");
    var name = config[0];
    var id = parseInt(config[1]);
    if (name.includes("public static final int")) {
      name = name.replace("\tpublic static final int ", "");
      // skip 0 ?
      if(id == 0){
        return;
      }
      var subdata = new Object();
      subdata["name"] = name;
      subdata["id"] = id;
      data_gc.push(subdata);
      //console.log(name);
      index_cmdid_gc++;
    } else {
      index_cmdid_gc_out++;
    }
    /*    
    var subdata = new Object();
    subdata["name"] = config[0];
    subdata["id"] = parseInt(config[1]);
    data.push(subdata);
    */
  });
  lineReadercmdid.on("close", function () {
    console.log(
      "found cmd id " + index_cmdid_gc + " | no need " + index_cmdid_gc_out
    );
    var strNotes = JSON.stringify(data_gc, null, 4);
    fs.writeFile(read_cmdid_output_gc, strNotes, "utf8", function (err) {
      if (err) {
        console.log("An error occured while writing JSON Object to File.");
        return console.log(err);
      }
      console.log("JSON file has been saved.");
    });
  });
}

get_cmdid_gc();
//get_cmdid_json();
//check_gen();