/**
 * Missionsbriefing im Schreibmaschinenstil. Leertaste/Klick zeigt zuerst den ganzen
 * Text, ein zweiter Druck startet den Einsatz.
 * @module scenes/BriefingScene
 */

import { BRIEFING_CONTINUE, BRIEFINGS, PRESIDENT } from '../content/texts.js';
import { oncePerEvent } from '../systems/keyboard.js';
import { textStyle, UI } from '../ui/theme.js';

/** Tippgeschwindigkeit der Schreibmaschine in Zeichen pro Sekunde. */
const CHARS_PER_SECOND = 70;

export class BriefingScene extends Phaser.Scene {
  constructor() {
    super('Briefing');
  }

  create() {
    const { width, height } = this.scale;
    this.input.setDefaultCursor('default');
    const briefing = BRIEFINGS[Math.floor(Math.random() * BRIEFINGS.length)];

    const bg = this.add.graphics();
    bg.fillStyle(0x0d1321, 1);
    bg.fillRect(0, 0, width, height);
    bg.lineStyle(3, 0xf2c14e, 1);
    bg.strokeRect(60, 50, width - 120, height - 100);
    bg.fillStyle(0xc1121f, 1);
    bg.fillRect(60, 50, width - 120, 64);

    this.add.text(width / 2, 82, briefing.title, textStyle({ fontSize: '26px', strokeThickness: 0 })).setOrigin(0.5);
    this.add.text(96, 140, `AN: ${PRESIDENT.toUpperCase()}`, textStyle({ fontSize: '18px', color: UI.colors.gold }));

    this.fullText = briefing.lines.join('\n\n');
    this.bodyText = this.add.text(96, 185, '', {
      ...textStyle({ fontSize: '21px', strokeThickness: 0 }),
      fontFamily: 'Consolas, "Courier New", monospace',
      wordWrap: { width: width - 192 },
      lineSpacing: 6,
    });
    this.typed = 0;

    this.add.text(width / 2, height - 80, BRIEFING_CONTINUE, textStyle({ fontSize: '17px', color: UI.colors.muted })).setOrigin(0.5);

    const advance = oncePerEvent((event) => {
      // Gedrückt gehaltene Tasten sollen das Briefing nicht versehentlich überspringen.
      if (event?.repeat) return;
      if (this.typed < this.fullText.length) {
        this.typed = this.fullText.length;
        this.bodyText.setText(this.fullText);
      } else {
        this.scene.start('Game');
      }
    });
    this.input.on('pointerup', advance);
    this.input.keyboard.on('keydown-SPACE', advance);
    this.input.keyboard.on('keydown-ENTER', advance);
    this.input.keyboard.on('keydown-ESC', oncePerEvent(() => this.scene.start('Menu')));
    this.input.keyboard.addCapture('SPACE');
  }

  update(_time, delta) {
    if (this.typed >= this.fullText.length) return;
    this.typed = Math.min(this.fullText.length, this.typed + (CHARS_PER_SECOND * delta) / 1000);
    this.bodyText.setText(this.fullText.slice(0, Math.floor(this.typed)));
  }
}