import BinaryStream from '../../../common/binarystream';
import MapTitle from './maptitle';
import MapOrder from './maporder';

/**
 * war3campaign.w3f - the campaign information file.
 */
export default class War3CampaignW3f {
  version: number = 0;
  campaignVersion: number = 0;
  editorVersion: number = 0;
  name: string = '';
  difficulty: string = '';
  author: string = '';
  description: string = '';
  mode: number = -1; // 0: fixed difficulty, only w3m maps, 1: variable difficulty, only w3m maps, 1: fixed..., contains w3x maps, 2: variable..., contains w3xm maps.
  backgroundScreen: number = -1; // -1 = none or custom path
  backgroundScreenPath: string = '';
  minimapImagePath: string = '';
  ambientSound: number = 0; // -1 = imported, 0 = none, >0 = preset index
  ambientSoundPath: string = '';
  terrainFog: number = 0; // 0 = not used, >0 = index of terrain fog style
  fogStartZ: number = 0;
  fogEndZ: number = 0;
  fogDensity: number = 0;
  fogColor: Uint8Array = new Uint8Array(4);
  userInterface: number = -1; // 0 = human
  mapTitles: MapTitle[] = [];
  mapOrders: MapOrder[] = [];

  constructor(buffer?: ArrayBuffer) {
    if (buffer) {
      this.load(buffer);
    }
  }

  load(buffer: ArrayBuffer) {
    let stream = new BinaryStream(buffer);

    this.version = stream.readInt32();
    this.campaignVersion = stream.readInt32();
    this.editorVersion = stream.readInt32();
    this.name = stream.readUntilNull();
    this.difficulty = stream.readUntilNull();
    this.author = stream.readUntilNull();
    this.description = stream.readUntilNull();
    this.mode = stream.readInt32();
    this.backgroundScreen = stream.readInt32();
    this.backgroundScreenPath = stream.readUntilNull();
    this.minimapImagePath = stream.readUntilNull();
    this.ambientSound = stream.readInt32();
    this.ambientSoundPath = stream.readUntilNull();
    this.terrainFog = stream.readInt32();
    this.fogStartZ = stream.readFloat32();
    this.fogEndZ = stream.readFloat32();
    this.fogDensity = stream.readFloat32();
    stream.readUint8Array(this.fogColor);
    this.userInterface = stream.readInt32();

    for (let i = 0, l = stream.readUint32(); i < l; i++) {
      let mapTitle = new MapTitle();

      mapTitle.load(stream);

      this.mapTitles[i] = mapTitle;
    }

    for (let i = 0, l = stream.readUint32(); i < l; i++) {
      let mapOrder = new MapOrder();

      mapOrder.load(stream);

      this.mapOrders[i] = mapOrder;
    }
  }

  save() {
    let buffer = new ArrayBuffer(this.getByteLength());
    let stream = new BinaryStream(buffer);

    stream.writeInt32(this.version);
    stream.writeInt32(this.campaignVersion);
    stream.writeInt32(this.editorVersion);
    stream.write(`${this.name}\0`);
    stream.write(`${this.difficulty}\0`);
    stream.write(`${this.author}\0`);
    stream.write(`${this.description}\0`);
    stream.writeInt32(this.mode);
    stream.writeInt32(this.backgroundScreen);
    stream.write(`${this.backgroundScreenPath}\0`);
    stream.write(`${this.minimapImagePath}\0`);
    stream.writeInt32(this.ambientSound);
    stream.write(`${this.ambientSoundPath}\0`);
    stream.writeInt32(this.terrainFog);
    stream.writeFloat32(this.fogStartZ);
    stream.writeFloat32(this.fogEndZ);
    stream.writeFloat32(this.fogDensity);
    stream.writeUint8Array(this.fogColor);
    stream.writeInt32(this.userInterface);
    stream.writeUint32(this.mapTitles.length);

    for (let title of this.mapTitles) {
      title.save(stream);
    }

    stream.writeUint32(this.mapOrders.length);

    for (let order of this.mapOrders) {
      order.save(stream);
    }

    return buffer;
  }

  getByteLength() {
    let size = 63 + this.name.length + this.difficulty.length + this.author.length + this.description.length + this.backgroundScreenPath.length + this.minimapImagePath.length + this.ambientSoundPath.length;

    for (let title of this.mapTitles) {
      size += title.getByteLength();
    }

    for (let order of this.mapOrders) {
      size += order.getByteLength();
    }

    return size;
  }
}