var IN_BROWSER = typeof window != 'undefined';
import React from 'react';
if (IN_BROWSER) {
  var glfx = require('../vendor/glfx.optim')
  var particlesJS = require('../vendor/particles.js')
}

class Header extends React.Component {
  update() {
    if (!this.mounted) return;
    var w = this.video.width;
    var h = this.video.height;
    if (window.devicePixelRatio > 1) {
        w = w/2;
        h = h/2;
    }
    this.texture._.initFromCanvas(w, h, this.video);

    this.canvas.draw(this.texture).tiltShift(0, h*2/3, 10, h*2/3, 15, 200).update();
    requestAnimationFrame(this.update.bind(this));
  }
  componentWillUnmount() {
    this.mounted = false;
  }
  componentDidMount() {
    if (!IN_BROWSER) return;
    this.mounted = true;
    new particlesJS('header-background', {
      "particles": {
        "number": {
          "value": 36,
          "density": {
            "enable": true,
            "value_area": 800
          }
        },
        "color": {
          "value": "#ffffff"
        },
        "shape": {
          "type": "circle",
          "stroke": {
            "width": 0,
            "color": "#000000"
          },
          "polygon": {
            "nb_sides": 8
          }
        },
        "opacity": {
          "value": 1,
          "random": true,
          "anim": {
            "enable": true,
            "speed": .1,
            "opacity_min": .1,
            "sync": true
          }
        },
        "size": {
          "value": 2.2,
          "random": false,
          "anim": {
            "enable": false,
            "speed": .2,
            "size_min": 2.44,
            "sync": true
          }
        },
        "line_linked": {
          "enable": true,
          "distance": 240,
          "color": "#ffffff",
          "opacity": .2,
          "width": 3
        },
        "move": {
          "enable": true,
          "speed": 1.1,
          "direction": "none",
          "random": true,
          "straight": false,
          "out_mode": "bounce",
          "bounce": false,
          "attract": {
            "enable": false,
            "rotateX": 600,
            "rotateY": 600
          }
        }
      },
      "interactivity": {
        "detect_on": "canvas",
        "events": {
          "onhover": {
            "enable": true,
            "mode": "repulse"
          },
          "onclick": {
            "enable": true,
            "mode": "repulse"
          },
          "resize": true
        },
        "modes": {
          "grab": {
            "distance": 400,
            "line_linked": {
              "opacity": 1
            }
          },
          "bubble": {
            "distance": 250,
            "size": 0,
            "duration": 2,
            "opacity": 0,
            "speed": 3
          },
          "repulse": {
            "distance": 73.08694910712113,
            "duration": 0.4
          },
          "push": {
            "particles_nb": 4
          },
          "remove": {
            "particles_nb": 2
          }
        }
      },
      "retina_detect": true
    });
    var header_background = document.getElementById('header-background');
    this.canvas = glfx.canvas();
    this.video = header_background.children[0];
    this.context = window.pJSDom[0].pJS.canvas.ctx;
    this.texture = this.canvas.texture(this.video);
    header_background.appendChild(this.canvas);
    requestAnimationFrame(this.update.bind(this));
  }

  render() {
    return (
      <div id="header-background">
      </div>
    );
  }
}

module.exports = Header;