From 1313bd9779c638f09b8901f8432d6bc39910bce3 Mon Sep 17 00:00:00 2001
From: Claudio Yanes <me@claudio4.com>
Date: Fri, 04 Mar 2022 02:07:51 +0000
Subject: [PATCH] Move css and js to appropriate files

---
 layouts/partials/graph.html |  238 ++--------------------------------------------------------
 1 files changed, 11 insertions(+), 227 deletions(-)

diff --git a/layouts/partials/graph.html b/layouts/partials/graph.html
index 14e1fdb..31d008c 100644
--- a/layouts/partials/graph.html
+++ b/layouts/partials/graph.html
@@ -10,232 +10,16 @@
         --g-link-active: #5a7282;
     }
 </style>
+{{ $js := resources.Get "js/graph.js" | resources.Fingerprint "md5" }}
+<script src="{{ $js.Permalink }}"></script>
 <script>
-async function run() {
-  const { index, links, content } = await fetchData()
-  const curPage = {{ strings.TrimRight "/" .Page.Permalink }}.replace({{strings.TrimRight "/" .Site.BaseURL }}, "")
-  const pathColors = {{$.Site.Data.graphConfig.paths}}
-  let depth = {{$.Site.Data.graphConfig.depth}}
-
-  const parseIdsFromLinks = (links) => [...(new Set(links.flatMap(link => ([link.source, link.target]))))]
-
-  const neighbours = new Set()
-  const wl = [curPage || "/", "__SENTINEL"]
-  if (depth >= 0) {
-    while (depth >= 0 && wl.length > 0) {
-      // compute neighbours
-      const cur = wl.shift()
-      if (cur === "__SENTINEL") {
-        depth--
-        wl.push("__SENTINEL")
-      } else {
-        neighbours.add(cur)
-        const outgoing = index.links[cur] || []
-        const incoming = index.backlinks[cur] || []
-        wl.push(...outgoing.map(l => l.target), ...incoming.map(l => l.source))
-      }
-    }
-  } else {
-    parseIdsFromLinks(links).forEach(id => neighbours.add(id))
-  }
-
-  const data = {
-    nodes: [...neighbours].map(id => ({id})),
-    links: links.filter(l => neighbours.has(l.source) && neighbours.has(l.target)),
-  }
-
-  const color = (d) => {
-    if (d.id === curPage || (d.id === "/" && curPage === "")) {
-      return "var(--g-node-active)"
-    }
-
-    for (const pathColor of pathColors) {
-      const path = Object.keys(pathColor)[0]
-      const colour = pathColor[path]
-      if (d.id.startsWith(path)) {
-        return colour
-      }
-    }
-
-    return "var(--g-node)"
-  }
-
-  const drag = simulation => {
-    function dragstarted(event, d) {
-      if (!event.active) simulation.alphaTarget(1).restart();
-      d.fx = d.x;
-      d.fy = d.y;
-    }
-
-    function dragged(event,d) {
-      d.fx = event.x;
-      d.fy = event.y;
-    }
-
-    function dragended(event,d) {
-      if (!event.active) simulation.alphaTarget(0);
-      d.fx = null;
-      d.fy = null;
-    }
-
-    const enableDrag = {{$.Site.Data.graphConfig.enableDrag}}
-    const noop = () => {}
-    return d3.drag()
-      .on("start", enableDrag ? dragstarted : noop)
-      .on("drag", enableDrag ? dragged : noop)
-      .on("end", enableDrag ? dragended : noop);
-  }
-
-  const height = 250
-  const width = document.getElementById("graph-container").offsetWidth
-
-  const simulation = d3.forceSimulation(data.nodes)
-    .force("charge", d3.forceManyBody().strength(-30))
-    .force("link", d3.forceLink(data.links).id(d => d.id))
-    .force("center", d3.forceCenter());
-
-  const svg = d3.select('#graph-container')
-    .append('svg')
-    .attr('width', width)
-    .attr('height', height)
-    .attr("viewBox", [-width / 2, -height / 2, width, height]);
-
-  // legend
-  const enableLegend = {{$.Site.Data.graphConfig.enableLegend}}
-  if (enableLegend) {
-    const legend = [
-      {"Current": "var(--g-node-active)"},
-      {"Note": "var(--g-node)"},
-      ...pathColors
-    ]
-    legend.forEach((legendEntry, i) => {
-      const key = Object.keys(legendEntry)[0]
-      const colour = legendEntry[key]
-      svg.append("circle").attr("cx", -width/2 + 20).attr("cy", height/2 - 30 * (i+1)).attr("r", 6).style("fill", colour)
-      svg.append("text").attr("x", -width/2 + 40).attr("y", height/2 - 30 * (i+1)).text(key).style("font-size", "15px").attr("alignment-baseline","middle")
-    })
-  }
-
-  // draw links between nodes
-  const link = svg.append("g")
-    .selectAll("line")
-    .data(data.links)
-    .join("line")
-    .attr("class", "link")
-    .attr("stroke", "var(--g-link)")
-    .attr("stroke-width", 2)
-    .attr("data-source", d => d.source.id)
-    .attr("data-target", d => d.target.id)
-
-  // svg groups
-  const graphNode = svg.append("g")
-    .selectAll("g")
-    .data(data.nodes)
-    .enter().append("g")
-
-  // draw individual nodes
-  const node = graphNode.append("circle")
-    .attr("class", "node")
-    .attr("id", (d) => d.id)
-    .attr("r", (d) => {
-      const numOut = index.links[d.id]?.length || 0
-      const numIn = index.backlinks[d.id]?.length || 0
-      return 3 + (numOut + numIn) / 4
-    })
-    .attr("fill", color)
-    .style("cursor", "pointer")
-    .on("click", (_, d) => {
-      window.location.href = {{.Site.BaseURL}} + decodeURI(d.id).replace(/\s+/g, '-')
-    })
-    .on("mouseover", function (_, d) {
-      d3.selectAll(".node")
-        .transition()
-        .duration(100)
-        .attr("fill", "var(--g-node-inactive)")
-
-      const neighbours = parseIdsFromLinks([...(index.links[d.id] || []), ...(index.backlinks[d.id] || [])])
-      const neighbourNodes = d3.selectAll(".node").filter(d => neighbours.includes(d.id))
-      const currentId = d.id
-      const linkNodes = d3.selectAll(".link").filter(d => d.source.id === currentId || d.target.id === currentId)
-
-      // highlight neighbour nodes
-      neighbourNodes
-        .transition()
-        .duration(200)
-        .attr("fill", color)
-
-      // highlight links
-      linkNodes
-        .transition()
-        .duration(200)
-        .attr("stroke", "var(--g-link-active)")
-
-      // show text for self
-      d3.select(this.parentNode)
-        .select("text")
-        .raise()
-        .transition()
-        .duration(200)
-        .style("opacity", 1)
-    }).on("mouseleave", function (_,d) {
-      d3.selectAll(".node")
-        .transition()
-        .duration(200)
-        .attr("fill", color)
-
-      const currentId = d.id
-      const linkNodes = d3.selectAll(".link").filter(d => d.source.id === currentId || d.target.id === currentId)
-
-      linkNodes
-        .transition()
-        .duration(200)
-        .attr("stroke", "var(--g-link)")
-
-      d3.select(this.parentNode)
-        .select("text")
-        .transition()
-        .duration(200)
-        .style("opacity", 0)
-    })
-    .call(drag(simulation));
-
-  // draw labels
-  const labels = graphNode.append("text")
-    .attr("dx", 12)
-    .attr("dy", ".35em")
-    .text((d) => content[decodeURI(d.id).replace(/\s+/g, '-')]?.title || "Untitled")
-    .style("opacity", 0)
-    .style("pointer-events", "none")
-    .call(drag(simulation));
-
-  // set panning
-  const enableZoom = {{$.Site.Data.graphConfig.enableZoom}}
-  if (enableZoom) {
-    svg.call(d3.zoom()
-      .extent([[0, 0], [width, height]])
-      .scaleExtent([0.25, 4])
-      .on("zoom", ({transform}) => {
-        link.attr("transform", transform);
-        node.attr("transform", transform);
-        labels.attr("transform", transform);
-      }));
-  }
-
-  // progress the simulation
-  simulation.on("tick", () => {
-    link
-      .attr("x1", d => d.source.x)
-      .attr("y1", d => d.source.y)
-      .attr("x2", d => d.target.x)
-      .attr("y2", d => d.target.y)
-    node
-      .attr("cx", d => d.x)
-      .attr("cy", d => d.y)
-    labels
-      .attr("x", d => d.x)
-      .attr("y", d => d.y)
-  });
-}
-
-run()
+  drawGraph(
+    {{strings.TrimRight "/" .Page.Permalink}},
+    {{strings.TrimRight "/" .Site.BaseURL}},
+    {{$.Site.Data.graphConfig.paths}},
+    {{$.Site.Data.graphConfig.depth}},
+    {{$.Site.Data.graphConfig.enableDrag}},
+    {{$.Site.Data.graphConfig.enableLegend}},
+    {{$.Site.Data.graphConfig.enableZoom}}
+  )
 </script>

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