{::nomarkdown}
{% assign fn = include.id | remove: " " | remove: "-" | downcase %}
<figure><a href="{{ include.url }}"><svg id="{{ include.id }}" width=500 height=200><title>{{ include.title }}</title></svg></a></figure>
<script>
function render_{{ fn }}() {
d3.csv("{{ include.url }}", function(d, i, columns) {
    return d; // Transformed below.
}, function(error, data) {
    if (error) throw(error);

    // Create a new data that pivots on runtime.
    //
    // To start, we have:
    //    runtime, ..., result
    //    runc,    ..., 1
    //    runsc,   ..., 2
    //
    // In the end we want:
    //    ..., runsc, runc
    //    ..., 1,     2

    // Filter by metric, if required.
    if ("{{ include.metric }}" != "") {
      orig_columns = data.columns;
      data = data.filter(d => d.metric == "{{ include.metric }}");
      data.columns = orig_columns;
    }

    // Filter by method, if required.
    if ("{{ include.method }}" != "") {
      orig_columns = data.columns;
      data = data.filter(d => d.method == "{{ include.method }}");
      data.columns = orig_columns.filter(key => key != "method");
    }

    // Enumerate runtimes.
    var runtimes = Array.from(new Set(data.map(d => d.runtime)));
    var metrics = Array.from(new Set(data.map(d => d.metric)));
    if (metrics.length < 1) {
        console.log(data);
        throw("need at least one metric");
    } else if (metrics.length == 1) {
        metric = metrics[0];
        data.columns = data.columns.filter(key => key != "metric");
    } else {
        metric = ""; // Used for grouping.
    }

    var isSubset = function(a, sup) {
        var ap = Object.getOwnPropertyNames(a);
        for (var i = 0; i < ap.length; i++) {
            if (a[ap[i]] !== sup[ap[i]]) {
                return false;
            }
        }
        return true;
    };

    // Execute a pivot to include runtimes as attributes.
    var new_data = data.map(function(data_item) {
        // Generate a prototype data item.
        var proto_item = Object.assign({}, data_item);
        delete proto_item.runtime;
        delete proto_item.result;
        var next_item = Object.assign({}, proto_item);

        // Find all matching runtime items.
        data.forEach(function(d) {
            if (isSubset(proto_item, d)) {
                // Add the result result.
                next_item[d.runtime] = d.result;
            }
        });
        return next_item;
    });

    // Remove any duplication.
    new_data = Array.from(new Set(new_data));
    new_data.columns = data.columns;
    new_data.columns = new_data.columns.filter(key => key != "runtime" && key != "result");
    new_data.columns = new_data.columns.concat(runtimes);
    data = new_data;

    // Slice based on the first key.
    if (data.columns.length != runtimes.length) {
        x0_key = new_data.columns[0];
        var x1_domain = data.columns.slice(1);
    } else {
        x0_key = "runtime";
        var x1_domain = runtimes;
    }

    // Determine variable margins.
    var x0_domain = data.map(d => d[x0_key]);
    var margin_bottom_pad = 0;
    if (x0_domain.length > 8) {
        margin_bottom_pad = 50;
    }

    // Use log scale if required.
    var y_min = 0;
    if ({{ include.log | default: "false" }}) {
        // Need to cap lower end of the domain at 1.
        y_min = 1;
    }

    if ({{ include.y_min | default: "false" }}) {
        y_min = "{{ include.y_min }}";
    }

    var svg = d3.select("#{{ include.id }}"),
        margin = {top: 20, right: 20, bottom: 30 + margin_bottom_pad, left: 50},
        width = +svg.attr("width") - margin.left - margin.right,
        height = +svg.attr("height") - margin.top - margin.bottom,
        g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    var x0 = d3.scaleBand()
        .rangeRound([margin.left / 2, width - (4 * margin.right)])
        .paddingInner(0.1);

    var x1 = d3.scaleBand()
        .padding(0.05);

    var y = d3.scaleLinear()
        .rangeRound([height, 0]);
    if ({{ include.log | default: "false" }}) {
        y = d3.scaleLog()
           .rangeRound([height, 0]);
    }

    var z = d3.scaleOrdinal()
        .range(["#262362", "#FBB03B", "#286FD7", "#6b486b"]);

    // Set all domains.
    x0.domain(x0_domain);
    x1.domain(x1_domain).rangeRound([0, x0.bandwidth()]);
    y.domain([y_min, d3.max(data, d => d3.max(x1_domain, key => parseFloat(d[key])))]).nice();

    // The data.
    g.append("g")
        .selectAll("g")
        .data(data)
        .enter().append("g")
          .attr("transform", function(d) { return "translate(" + x0(d[x0_key]) + ",0)"; })
        .selectAll("rect")
        .data(d => x1_domain.map(key => ({key, value: d[key]})))
        .enter().append("rect")
          .attr("x", d => x1(d.key))
          .attr("y", d => y(d.value))
          .attr("width", x1.bandwidth())
          .attr("height", d => y(y_min) - y(d.value))
          .attr("fill", d => z(d.key));

    // X0 ticks and labels.
    var x0_axis = g.append("g")
        .attr("class", "axis")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x0));
    if (x0_domain.length > 8) {
        x0_axis.selectAll("text")
            .style("text-anchor", "end")
            .attr("dx", "-.8em")
            .attr("dy", ".15em")
            .attr("transform", "rotate(-65)");
    }

    // Y ticks and top-label.
    if (metric == "default") {
        metric = ""; // Don't display.
    }
    g.append("g")
        .attr("class", "axis")
        .call(d3.axisLeft(y).ticks(null, ".1s"))
        .append("text")
        .attr("x", -30.0)
        .attr("y", y(y.ticks().pop()) - 10.0)
        .attr("dy", "0.32em")
        .attr("fill", "#000")
        .attr("font-weight", "bold")
        .attr("text-anchor", "start")
        .text(metric);

    // The legend.
    var legend = g.append("g")
        .attr("font-family", "sans-serif")
        .attr("font-size", 10)
        .attr("text-anchor", "end")
        .selectAll("g")
        .data(x1_domain.slice().reverse())
        .enter().append("g")
        .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
    legend.append("rect")
        .attr("x", width - 19)
        .attr("width", 19)
        .attr("height", 19)
        .attr("fill", z);
    legend.append("text")
        .attr("x", width - 24)
        .attr("y", 9.5)
        .attr("dy", "0.32em")
        .text(function(d) { return d; });
});
}
$(render_{{ fn }});
</script>
{:/}
