import d3 from "d3";

export function initialize() {
  (function() {

  d3.bullet = function() {
    var reverse = false,
        duration = 0,
        ranges = bulletRanges,
        markers = bulletMarkers,
        measures = bulletMeasures,
        width = 380,
        height = 30,
        tickFormat = d3.format(",.1f");

    // For each small multiple…
    function bullet(g) {
      g.each(function(d, i) {
        var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
            markerz = markers.call(this, d, i).slice().sort(d3.descending),
            measurez = measures.call(this, d, i).slice().sort(d3.descending),
            g = d3.select(this);

        // Compute the new x-scale.
        var x1 = d3.scaleLinear()
            .domain([0, Math.max(rangez[0], markerz[0], measurez[0])])
            .range(reverse ? [width, 0] : [0, width]);

        // Retrieve the old x-scale, if this is an update.
        var x0 = this.__chart__ || d3.scaleLinear()
            .domain([0, Infinity])
            .range(x1.range());

        // Stash the new scale.
        this.__chart__ = x1;

        // Derive width-scales from the x-scales.
        var w0 = bulletWidth(x0),
            w1 = bulletWidth(x1);

        // Update the range rects.
        var range = g.selectAll("rect.range")
            .data(rangez);

        range.enter().append("rect")
            .attr("class", function(d, i) { return "range s" + i; })
            .attr("width", w0)
            .attr("height", height)
            .attr("x", reverse ? x0 : 0)
          .transition()
            .duration(duration)
            .attr("width", w1)
            .attr("x", reverse ? x1 : 0);

        range.transition()
            .duration(duration)
            .attr("x", reverse ? x1 : 0)
            .attr("width", w1)
            .attr("height", height);

        // Update the measure rects.
        var measure = g.selectAll("rect.measure")
            .data(measurez);

        measure.enter().append("rect")
            .attr("class", function(d, i) { return "measure s" + i; })
            .attr("width", w0)
            .attr("height", height / 3)
            .attr("x", reverse ? x0 : 0)
            .attr("y", height / 3)
          .transition()
            .duration(duration)
            .attr("width", w1)
            .attr("x", reverse ? x1 : 0);

        measure.transition()
            .duration(duration)
            .attr("width", w1)
            .attr("height", height / 3)
            .attr("x", reverse ? x1 : 0)
            .attr("y", height / 3);

        // Update the marker lines.
        var marker = g.selectAll("line.marker")
            .data(markerz);

        marker.enter().append("line")
            .attr("class", "marker")
            .attr("x1", x0)
            .attr("x2", x0)
            .attr("y1", height / 6)
            .attr("y2", height * 5 / 6)
          .transition()
            .duration(duration)
            .attr("x1", x1)
            .attr("x2", x1);

        marker.transition()
            .duration(duration)
            .attr("x1", x1)
            .attr("x2", x1)
            .attr("y1", height / 6)
            .attr("y2", height * 5 / 6);

        // Compute the tick format.
        var format = tickFormat || x1.tickFormat(8);

        // Update the tick groups.
        var tick = g.selectAll("g.tick")
            .data(x1.ticks(8), function(d) {
              return this.textContent || format(d);
            });

        // Initialize the ticks with the old scale, x0.
        var tickEnter = tick.enter().append("g")
            .attr("class", "tick")
            .attr("transform", bulletTranslate(x0))
            .style("opacity", 1e-6);

        tickEnter.append("line")
            .attr("y1", height)
            .attr("y2", height * 7 / 6);

        tickEnter.append("text")
            .attr("text-anchor", "middle")
            .attr("dy", "1em")
            .attr("y", height * 7 / 6)
            .text(format);

        // Transition the entering ticks to the new scale, x1.
        tickEnter.transition()
            .duration(duration)
            .attr("transform", bulletTranslate(x1))
            .style("opacity", 1);

        // Transition the updating ticks to the new scale, x1.
        var tickUpdate = tick.transition()
            .duration(duration)
            .attr("transform", bulletTranslate(x1))
            .style("opacity", 1);

        tickUpdate.select("line")
            .attr("y1", height)
            .attr("y2", height * 7 / 6);

        tickUpdate.select("text")
            .attr("y", height * 7 / 6);

        // Transition the exiting ticks to the new scale, x1.
        tick.exit().transition()
            .duration(duration)
            .attr("transform", bulletTranslate(x1))
            .style("opacity", 1e-6)
            .remove();
      });
      //d3.timer.flush();
    }

    // ranges (bad, satisfactory, good)
    bullet.ranges = function(x) {
      if (!arguments.length) return ranges;
      ranges = x;
      return bullet;
    };

    bullet.width = function(x) {
      if (!arguments.length) return width;
      width = x;
      return bullet;
    };

    bullet.height = function(x) {
      if (!arguments.length) return height;
      height = x;
      return bullet;
    };

    return bullet;
  };


    function bulletRanges(d) {
      return d.ranges;
    }

    function bulletMarkers(d) {
      return d.markers;
    }

    function bulletMeasures(d) {
      return d.measures;
    }

    function bulletTranslate(x) {
      return function(d) {
        return "translate(" + x(d) + ",0)";
      };
    }

    function bulletWidth(x) {
      var x0 = x(0);
      return function(d) {
        return Math.abs(x(d) - x0);
      };
    }

  })();
}

export default {
  initialize
};