(() => {
  // plugins
  Matter.use(MatterAttractors);

  // constants
  const PATHS = {
    DOME: '0 0 0 250 19 250 20 231.9 25.7 196.1 36.9 161.7 53.3 129.5 74.6 100.2 100.2 74.6 129.5 53.3 161.7 36.9 196.1 25.7 231.9 20 268.1 20 303.9 25.7 338.3 36.9 370.5 53.3 399.8 74.6 425.4 100.2 446.7 129.5 463.1 161.7 474.3 196.1 480 231.9 480 250 500 250 500 0 0 0',
    DROP_LEFT: '0 0 20 0 70 100 20 150 0 150 0 0',
    DROP_RIGHT: '50 0 68 0 68 150 50 150 0 100 50 0',
    APRON_LEFT: '0 0 180 120 0 120 0 0',
    APRON_RIGHT: '180 0 180 120 0 120 180 0'
  };

    const COLOR = {
    BACKGROUND: '#000',
    OUTER: '#000',
    INNER: '#FFFFFF',
    BUMPER: '#FFFFFF',
//    BUMPER_LIT:'#FF3F99', //Lobster
//    BUMPER_LIT:'#FF8C1F', //PNF
//    BUMPER_LIT:'#FFFF01', //Pigeon Plaza
    BUMPER_LIT:'#86FC06', //Secret Garden
//    BUMPER_LIT:'#04D9FF', //Secret Garden
      
      PADDLE: '#FFFFFF',
      
//    PINBALL: '#FF3F99', //Lobster
//    PINBALL: '#FF8C1F', //PNF
//    PINBALL: '#FFFF01', //Pigeon Plaza
    PINBALL: '#86FC06', //Secret Garden
//      PINBALL: '#04D9FF', //Secret Garden   
      
//    LINK: '#FF3F99', //Lobster
//    LINK: '#FF8C1F', //PNF
//    LINK: '#FFFF01', //Pigeon Plaza
    LINK: '#86FC06', //Secret Garden
//      LINK: '#04D9FF', //Secret Garden
  };

  const GRAVITY = 1;
  const WIREFRAMES = false;
  const BUMPER_BOUNCE = 1.5;
  const MAX_VELOCITY = 50;

    // matter.js has a built in random range function, but it is deterministic
    function rand(min, max) {
      return Math.random() * (max - min) + min;
    }


  // shared variables
  let engine, world, render, pinball, stopperGroup;

  function load() {
    init();
    createStaticBodies();
    createPinball();
    createEvents();
  }

  function init() {
    // engine (shared)
    engine = Matter.Engine.create();

    // world (shared)
    world = engine.world;
    world.bounds = {
      min: { x: 0, y: 0},
      max: { x: 500, y: 800 }
    };

    world.gravity.y = GRAVITY; // simulate rolling on a slanted table

    // render (shared)
    render = Matter.Render.create({
      element: $('.container')[0],
      engine: engine,
      options: {
        width: world.bounds.max.x,
        height: world.bounds.max.y,
        wireframes: WIREFRAMES,
        background: COLOR.BACKGROUND
      }
    });

    Matter.Render.run(render);

    // runner
    let runner = Matter.Runner.create();
    Matter.Runner.run(runner, engine);

    // used for collision filtering on various bodies
    stopperGroup = Matter.Body.nextGroup(true);
    
    // based on https://stackoverflow.com/questions/28324303/matter-js-mouse-click-on-body
    // https://github.com/liabru/matter-js/blob/081645474c4aa798e5b1ede5d5230b0ecb8835d2/examples/events.js
    var mouse = Matter.Mouse.create(render.canvas);
    var mouseConstraint = Matter.MouseConstraint.create(engine, {
        mouse: mouse,
        constraint: {
            stiffness: 1,
            render: {
                visible: false
            }
        }
    })

    Matter.World.add(world, mouseConstraint);
      

      
      
    Matter.Events.on(engine, 'tick', function(event) {
      if(mouseConstraint.mouse.button == 0){
          console.log("click", mouseConstraint.body);
          if (mouseConstraint.body && mouseConstraint.body.url) {
              console.log("opening link", mouseConstraint.body.url);
              
                  function openTab(url) {
                    // Create link in memory
                    var a = window.document.createElement("a");
                    //a.target = '_blank';
                    a.href = url;

                    // Dispatch fake click
                    var e = window.document.createEvent("MouseEvents");
                    e.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
                    a.dispatchEvent(e);
                };

                openTab(mouseConstraint.body.url);
              
              
              //window.open(mouseConstraint.body.url, "_self");
          }
      }
    });
    
    // an example of using mouse events on a mouse
    Matter.Events.on(mouseConstraint, 'mousedown', function(event) {
        var mousePosition = event.mouse.position;
        console.log('mousedown at ' + mousePosition.x + ' ' + mousePosition.y);
    });    
  }



   var BUMPER_DATA = [
    
     {x: 100, y: 200, url: "./guestbook/", text: "I want to leave a trace"}, //1 + (I want to leave a trace) + (./guestbook/index.php)
     {x: 400, y: 200, url: "./flora-exotica.pdf", text: "Exotica"}, //2 + (Exotica) + (flora-exotica.pdf)
    
    {x: 175, y: 290, url: "./pprgm/", text: "there are so many plants here"}, //4 + (there are so many plants here) + (./pprgm/index.html)
    {x: 325, y: 290, url: "./S1/", text: "We can talk about it while we walk"}, //5 + (We can talk about it while we walk) + (S1/)
    
     {x: 250, y: 380, url: "./S11/", text: "it is what it is, I guess"}, //6 + (It is what it is, I guess) + (S11/)
     {x: 175, y: 470, url: "./S8/", text: "let's grow some thoughts over here"}, //7 + (let's grow some thoughts over here) + (S8/)
     {x: 325, y: 470, url: "./cucum.gif", text: "I just want to play in peace"}, //8 + (I just want to play in peace) + (cucum.gif)
    
     {x: 250, y: 560, url: "./yes.pdf", text: "I just want to walk in peace"}, //9 + (I just want to walk in peace) + (yes.pdf)
 ];
    
    
    

  function createStaticBodies() {
    Matter.World.add(world, [
      // table boundaries (top, bottom, left, right)
      boundary(50, -30, 500, 100),
      boundary(250, 830, 500, 100),
      boundary(-40, 400, 100, 800),
      boundary(540, 400, 100, 800),

      // dome
      path(251, 10, PATHS.DOME),
        
     //The secret garden
      wall(250, 200, 30, 110, COLOR.INNER),  
      wall(100, 380, 30, 110, COLOR.INNER),
      wall(100, 380, 30, 110, COLOR.INNER),
      wall(400, 380, 30, 110, COLOR.INNER),
      wall(130, 560, 30, 110, COLOR.INNER, -0.96),  
      wall(370, 560, 30, 110, COLOR.INNER, 0.96),    

      //Sonic the Sellout

      // Pigeons Plaza
      //wall(250, 380, 30, 110, COLOR.INNER, 0.96),  
        
      // PNF
      //wall(250, 560, 30, 110, COLOR.INNER),
      //wall(175, 290, 30, 110, COLOR.INNER),
      //wall(325, 290, 30, 110, COLOR.INNER),
      //wall(130, 560, 30, 110, COLOR.INNER, -0.96),  
      //wall(370, 560, 30, 110, COLOR.INNER, 0.96),
        
      // Lobster Lounge    
      //wall(455, 520, 7, 560, COLOR.OUTER),
      //wall(250, 380, 30, 110, COLOR.INNER),
      //wall(100, 380, 30, 110, COLOR.INNER),  
      //wall(400, 380, 30, 110, COLOR.INNER),
      //wall(130, 200, 30, 110, COLOR.INNER, -0.96),
      //wall(370, 560, 30, 110, COLOR.INNER, 0.96),
          
      // reset zones (center, right)
      reset(221, 420),
      reset(470, 40)
    ]);
    
    BUMPER_DATA.forEach(d => {
      Matter.World.add(world, bumper(d.x, d.y, d.url));
    });

    //
    // eventually
    // Matter.World.add(world, bumper(d)); and change bumper to use b.whatever as needed (incl color for instance)
  }

 

  function createPinball() {
    // x/y are set to when pinball is launched
    pinball = Matter.Bodies.circle(0, 0, 12, {
      label: 'pinball',
      collisionFilter: {
        group: stopperGroup
      },
      render: {
        fillStyle: COLOR.PINBALL
      }
    });
    Matter.World.add(world, pinball);
    launchPinball();
  }

  function createEvents() {
    // events for when the pinball hits stuff
    Matter.Events.on(engine, 'collisionStart', function(event) {
      let pairs = event.pairs;
      pairs.forEach(function(pair) {
        if (pair.bodyB.label === 'pinball') {
          switch (pair.bodyA.label) {
            case 'reset':
              launchPinball();
              break;
            case 'bumper':
              pingBumper(pair.bodyA);
              break;
          }
        }
      });
    });

    // regulate pinball
    Matter.Events.on(engine, 'beforeUpdate', function(event) {
      // bumpers can quickly multiply velocity, so keep that in check
      Matter.Body.setVelocity(pinball, {
        x: Math.max(Math.min(pinball.velocity.x, MAX_VELOCITY), -MAX_VELOCITY),
        y: Math.max(Math.min(pinball.velocity.y, MAX_VELOCITY), -MAX_VELOCITY),
      });

      // cheap way to keep ball from going back down the shooter lane
      if (pinball.position.x > 450 && pinball.velocity.y > 0) {
        Matter.Body.setVelocity(pinball, { x: 0, y: -10 });
      }
    });

  }

  function launchPinball() {
    Matter.Body.setPosition(pinball, { x: 465, y: 765 });
    Matter.Body.setVelocity(pinball, { x: 0, y: -25 + rand(-2, 2) });
    Matter.Body.setAngularVelocity(pinball, 0);
  }

  function pingBumper(bumper) {
    //updateScore(currentScore + 10);

    // flash color
    bumper.render.fillStyle = COLOR.BUMPER_LIT;
    setTimeout(function() {
        bumper.render.fillStyle = COLOR.BUMPER;
    }, 100);
      
    // swap text (#textfeature)
    var textcontainer = document.getElementById("but");
    console.log('BUMPER:', bumper)
    BUMPER_DATA.forEach(b => {
        if (b.url == bumper.url){
            console.log('b.url == bumper.url :', b.url, bumper.url);
            console.log('b.text:', b.text);
            textcontainer.innerText = b.text;
        }
        
    });
  }



  // outer edges of pinball table
  function boundary(x, y, width, height) {
    return Matter.Bodies.rectangle(x, y, width, height, {
      isStatic: true,
      render: {
        fillStyle: COLOR.OUTER
      }
    });
  }

  // wall segments
  function wall(x, y, width, height, color, angle = 0) {
    return Matter.Bodies.rectangle(x, y, width, height, {
      angle: angle,
      isStatic: true,
      chamfer: { radius: 15 },
      render: {
        fillStyle: color
      }
    });
  }

  // bodies created from SVG paths
  function path(x, y, path) {
    let vertices = Matter.Vertices.fromPath(path);
    return Matter.Bodies.fromVertices(x, y, vertices, {
      isStatic: true,
      render: {
        fillStyle: COLOR.OUTER,

        // add stroke and line width to fill in slight gaps between fragments
        strokeStyle: COLOR.OUTER,
        lineWidth: 1
      }
    });
  }

  // round bodies that repel pinball
  function bumper(x, y, url) {
    let bumper = Matter.Bodies.circle(x, y, 25, {
      label: 'bumper',
      url: url,
      isStatic: true,
      render: {
        fillStyle: COLOR.BUMPER
      }
    });

    // for some reason, restitution is reset unless it's set after body creation
    bumper.restitution = BUMPER_BOUNCE;

    return bumper;
  }

  // invisible bodies to constrict paddles


  // contact with these bodies causes pinball to be relaunched
  function reset(x, width) {
    return Matter.Bodies.rectangle(x, 781, width, 4, {
      label: 'reset',
      isStatic: true,
      render: {
        fillStyle: '#00070C'
      }
    });
  }

  window.addEventListener('load', load, false);
})();