/**
 * Timmy the Wizard — geometric figure built from primitives.
 *
 * Phase 1: cone body (robe), sphere head, cylinder arms.
 * Idle animation: gentle breathing (Y-scale oscillation), head tilt.
 */

import * as THREE from "https://cdn.jsdelivr.net/npm/three@0.160.0/build/three.module.js";

const ROBE_COLOR = 0x2d1b4e;
const TRIM_COLOR = 0xdaa520;

/**
 * Create the wizard group and return { group, update }.
 * Call update(dt) each frame for idle animation.
 */
export function createWizard() {
    const group = new THREE.Group();

    // --- Robe (cone) ---
    const robeGeo = new THREE.ConeGeometry(0.5, 1.6, 8);
    const robeMat = new THREE.MeshStandardMaterial({
        color: ROBE_COLOR,
        roughness: 0.8,
    });
    const robe = new THREE.Mesh(robeGeo, robeMat);
    robe.position.y = 0.8;
    group.add(robe);

    // --- Trim ring at robe bottom ---
    const trimGeo = new THREE.TorusGeometry(0.5, 0.03, 8, 24);
    const trimMat = new THREE.MeshStandardMaterial({
        color: TRIM_COLOR,
        roughness: 0.4,
        metalness: 0.3,
    });
    const trim = new THREE.Mesh(trimGeo, trimMat);
    trim.rotation.x = Math.PI / 2;
    trim.position.y = 0.02;
    group.add(trim);

    // --- Head (sphere) ---
    const headGeo = new THREE.SphereGeometry(0.22, 12, 10);
    const headMat = new THREE.MeshStandardMaterial({
        color: 0xd4a574,
        roughness: 0.7,
    });
    const head = new THREE.Mesh(headGeo, headMat);
    head.position.y = 1.72;
    group.add(head);

    // --- Hood (cone behind head) ---
    const hoodGeo = new THREE.ConeGeometry(0.35, 0.5, 8);
    const hoodMat = new THREE.MeshStandardMaterial({
        color: ROBE_COLOR,
        roughness: 0.8,
    });
    const hood = new THREE.Mesh(hoodGeo, hoodMat);
    hood.position.y = 1.85;
    hood.position.z = -0.08;
    group.add(hood);

    // --- Arms (cylinders) ---
    const armGeo = new THREE.CylinderGeometry(0.06, 0.08, 0.7, 6);
    const armMat = new THREE.MeshStandardMaterial({
        color: ROBE_COLOR,
        roughness: 0.8,
    });

    const leftArm = new THREE.Mesh(armGeo, armMat);
    leftArm.position.set(-0.45, 1.0, 0.15);
    leftArm.rotation.z = 0.3;
    leftArm.rotation.x = -0.4;
    group.add(leftArm);

    const rightArm = new THREE.Mesh(armGeo, armMat);
    rightArm.position.set(0.45, 1.0, 0.15);
    rightArm.rotation.z = -0.3;
    rightArm.rotation.x = -0.4;
    group.add(rightArm);

    // Position behind the desk
    group.position.set(0, 0, -0.8);

    // Animation state
    let elapsed = 0;

    function update(dt) {
        elapsed += dt;
        // Breathing: subtle Y-scale oscillation
        const breath = 1.0 + Math.sin(elapsed * 1.5) * 0.015;
        robe.scale.y = breath;
        // Head tilt
        head.rotation.z = Math.sin(elapsed * 0.7) * 0.05;
        head.rotation.x = Math.sin(elapsed * 0.5) * 0.03;
    }

    return { group, update };
}