import * as THREE from 'three';
import { Box3 } from 'three/src/math/Box3.js';
import { Matrix4 } from 'three/src/math/Matrix4.js';
import { Vector3 } from 'three/src/math/Vector3.js';
import { Scene } from 'three/src/scenes/Scene.js';
import { PerspectiveCamera } from 'three/src/cameras/PerspectiveCamera.js';
import { AmbientLight } from 'three/src/lights/AmbientLight.js';
import { DirectionalLight } from 'three/src/lights/DirectionalLight.js';
import { MeshPhongMaterial } from 'three/src/materials/MeshPhongMaterial.js';
import { BoxGeometry } from 'three/src/geometries/BoxGeometry.js';
import { Mesh } from 'three/src/objects/Mesh.js';
import { BoxHelper } from 'three/src/helpers/BoxHelper.js';
import { WebGLRenderer } from 'three/src/renderers/WebGLRenderer.js';
import { DoubleSide } from 'three/src/constants.js';
import 'three/examples/js/controls/EditorControls';
import printerSettings from '../settings/printer.yml';
import materialSettings from '../settings/material.yml';
import qualitySettings from '../settings/quality.yml';
import { sliceGeometry } from '../slicer.js';
import { grey800, red500 } from 'material-ui/styles/colors';
import React from 'react';
import PropTypes from 'prop-types';
import fileSaver from 'file-saver';

export function placeOnGround(mesh) {
  const boundingBox = new Box3().setFromObject(mesh);

  mesh.position.y -= boundingBox.min.y;
  mesh.updateMatrix();
}

export function centerGeometry(mesh) {
  // center geometry
  mesh.geometry.computeBoundingBox();
  const center = mesh.geometry.boundingBox.getCenter();
  mesh.geometry.applyMatrix(new Matrix4().makeTranslation(-center.x, -center.y, -center.z));
}

export function createScene({ pixelRatio, muiTheme }) {
  const scene = new Scene();

  const camera = new PerspectiveCamera(50, 1, 1, 10000);
  camera.position.set(0, 400, 300);
  camera.lookAt(new Vector3(0, 0, 0));

  const directionalLightA = new DirectionalLight(0xa2a2a2);
  directionalLightA.position.set(1, 1, 1);
  scene.add(directionalLightA);

  const directionalLightB = new DirectionalLight(0xa2a2a2);
  directionalLightB.position.set(-1, 1, -1);
  scene.add(directionalLightB);

  const light = new AmbientLight(0x656565);
  scene.add(light);

  const material = new MeshPhongMaterial({ color: muiTheme.palette.primary2Color, side: DoubleSide, specular: 0xc5c5c5, shininess: 5 });
  const mesh = new Mesh(new THREE.Geometry(), material);
  scene.add(mesh);

  const box = new BoxHelper(new Mesh(new BoxGeometry(1, 1, 1).applyMatrix(new Matrix4().makeTranslation(0, 0.5, 0))), muiTheme.palette.primary3Color);
  scene.add(box);

  let renderer = new WebGLRenderer({ alpha: true, antialias: true });
  let editorControls = new THREE.EditorControls(camera, renderer.domElement);

  box.scale.set(1., 1., 1.);
  box.updateMatrix();

  const render = () => renderer.render(scene, camera);

  const setSize = (width, height, pixelRatio = 1) => {
    renderer.setSize(width, height);
    renderer.setPixelRatio(pixelRatio);
    camera.aspect = width / height;
    camera.updateProjectionMatrix();
    render();
  };

  const updateCanvas = (canvas) => {
    if (!renderer || renderer.domElement !== canvas) {
      if (renderer) renderer.dispose();
      renderer = new WebGLRenderer({ canvas, alpha: true, antialias: true });
      renderer.setClearColor(0xffffff, 0);
    }
    if (!editorControls || editorControls.domElement !== canvas) {
      if (editorControls) editorControls.dispose();
      editorControls = new THREE.EditorControls(camera, canvas);
      editorControls.addEventListener('change', render);
    }

    render();
  };

  const focus = () => editorControls.focus(mesh);

  return { editorControls, scene, mesh, camera, renderer, render, box, setSize, updateCanvas, focus };
}

export function fetchProgress(url, { method = 'get', headers = {}, body = {} } = {}, onProgress) {
  return new Promise((resolve, reject) => {
    const xhr = new XMLHttpRequest();
    xhr.open(method, url);
    if (headers) {
      for (const key in headers) {
        const header = headers[key];
        xhr.setRequestHeader(key, header);
      }
    }
    xhr.onload = event => resolve(event.target.responseText);
    xhr.onerror = reject;
    if (xhr.upload && onProgress) xhr.upload.onprogress = onProgress;
    xhr.send(body);
  });
}

const GCODE_SERVER_URL = 'https://gcodeserver.doodle3d.com';
const CONNECT_URL = 'http://connect.doodle3d.com/';

export async function slice(target, name, mesh, settings, updateProgress) {
  if (!settings) throw new Error('please select a printer first');

  let steps;
  let currentStep = 0;
  switch (target) {
    case 'DOWNLOAD':
      steps = 1;
      break;
    case 'WIFI':
      steps = 2;
      break;
    default:
      throw new Error('unknown target');
      break;
  }

  const { dimensions } = settings;
  const centerX = dimensions.x / 2;
  const centerY = dimensions.y / 2;

  const matrix = new Matrix4().makeTranslation(centerY, 0, centerX).multiply(mesh.matrix);
  const { gcode } = await sliceGeometry(settings, mesh.geometry, mesh.material, matrix, false, false, ({ progress }) => {
    updateProgress({
      action: progress.action,
      percentage: currentStep / steps + progress.done / progress.total / steps
    });
  });
  currentStep ++;

  switch (target) {
    case 'DOWNLOAD': {
      const blob = new File([gcode], `${name}.gcode`, { type: 'text/plain;charset=utf-8' });
      fileSaver.saveAs(blob);
      break;
    }

    case 'WIFI': {
      // upload G-code file to AWS S3
      const { data: { reservation, id } } = await fetch(`${GCODE_SERVER_URL}/upload`, { method: 'POST' })
        .then(response => response.json());

      const body = new FormData();
      const { fields } = reservation;
      for (const key in fields) {
        body.append(key, fields[key]);
      }

      const file = `;${JSON.stringify({
        ...settings,
        name: `${name}.gcode`,
        printer: { type: settings.printers, title: printerSettings[settings.printer].title },
        material: { type: settings.material, title: materialSettings[settings.material].title },
        quality: { type: settings.quality, title: qualitySettings[settings.quality].title }
      }).trim()}\n${gcode}`;
      body.append('file', file);

      await fetchProgress(reservation.url, { method: 'POST', body }, (progess) => {
        updateProgress({
          action: 'Uploading',
          percentage: currentStep / steps + progess.loaded / progess.total / steps
        });
      });
      currentStep ++;

      const popup = window.open(`${CONNECT_URL}?uuid=${id}`, '_blank');
      if (!popup) throw new Error('popup was blocked by browser');
      break;
    }

    default:
      throw new Error('unknown target');
      break;
  }
}

export const TabTemplate = ({ children, selected, style }) => {
  const templateStyle = {
    width: '100%',
    position: 'relative',
    textAlign: 'initial',
    ...style,
    ...(selected ? {} : {
      height: 0,
      width: 0,
      overflow: 'hidden'
    })
  };

  return (
    <div style={templateStyle}>
      {children}
    </div>
  );
};

TabTemplate.propTypes = {
  children: PropTypes.node,
  selected: PropTypes.bool,
  style: PropTypes.object,
};