<h2> NBA Draft Position Cumulative </h2>
<svg id="chart"></svg>

@import url('https://fonts.googleapis.com/css?family=Roboto+Condensed:400,700');
body {
  font-size: 16px;
  font-family: "Roboto Condensed", sans-serif;
}

h2 {
  font-family: "Roboto Condensed", sans-serif;
  font-weight: 700;
  margin-bottom: 0;
}

.bar {
  fill: #0074D9;
}

#tooltip {
  position: absolute;
  left: -1000px;
  top: -1000px;
  width: 190px;
  height: 20px;
  padding: 4px 8px;
  border-radius: 8px;
  pointer-events: none;
  background-color: rgba(128, 128, 128, 0.8);
  color: #FFF;
}

.hover-line {
  stroke: #6F257F;
  stroke-width: 2px;
  stroke-dasharray: 3,3;
}

const url = 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/156286/nba-draft-position-cumulative.csv';
const margin = {top: 40, right: 0, bottom: 60,left: 30};
const width = 680, height = 500;

const tooltip = d3.select('body').append('div').attr('id', 'tooltip');
const x = d3.scaleLinear().range([0, width]);
const y = d3.scaleLinear().range([height, 0]);

const chart = d3.select('#chart')
  .attr('width', width + margin.left + margin.right)
  .attr('height', height + margin.top + margin.bottom)
  .append('g')
  .attr('transform', `translate(${margin.left}, ${margin.top})`);

// get the data
d3.csv(url, function(error, data) {
  if (error) throw error;

  // scale the range of the data
  x.domain( [0, 62] );
  y.domain( [0, 100]);
   
  // append the rectangles for the bar chart
  chart.selectAll(".bar")
      .data(data)
      .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.Pos); })
      .attr("width", 10)
      .attr("y", function(d) { return y(d.Percent); })
      .attr("height", function(d) { return height - y(d.Percent); })
      .on('mouseover', (d) => {
        tooltip.transition()
          .duration(100)    
          .style('opacity', 1.0);
        tooltip.text(`${d.Percent}% starters picked ${d.Pos}+`)
          .style('left', `${d3.event.pageX - 55}px`)  
          .style('top', `${d3.event.pageY - 24}px`);
      })
      .on('mouseout', () => {
        tooltip.transition()    
        .duration(400)    
        .style('opacity', 0); 
      });
  
  // add X-Axis
  chart.append("g")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));

  // add the Y-Axis
  chart.append("g")
      .call(d3.axisLeft(y));

  // add X-Axis Label
  chart.append('text')             
      .attr('transform', `translate(${width/2.5},${height + margin.top})`)
      .attr('id', 'x-label')
      .text('Draft Position');

});