Merge pull request #62 from claudio4/hugo

Jacky Zhao

2022-03-07 651bfc5cd284a259f429b50839c619dd1b94498a

Merge pull request #62 from claudio4/hugo

 .github/workflows/deploy.yaml

@@ -16,7 +16,7 @@
        with:
          index: true
          input: content
          output: static
          output: assets/indices
          root: .

      - name: Setup Hugo

 .gitignore

@@ -3,5 +3,5 @@
resources
.idea
content/.obsidian
static/linkIndex.json
static/contentIndex.json
assets/indices/linkIndex.json
assets/indices/contentIndex.json

 Makefile

@@ -4,4 +4,4 @@
    @grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

serve: ## serve
    hugo-obsidian -input=content -output=static -index -root=. && hugo server
    hugo-obsidian -input=content -output=assets/indices -index -root=. && hugo server

 assets/indices/.gitkeep

 assets/js/darkmode.js

 assets/js/graph.js

New file
@@ -0,0 +1,220 @@
async function drawGraph(url, baseUrl, pathColors, depth, enableDrag, enableLegend, enableZoom) {
  const { index, links, content } = await fetchData
  const curPage = url.replace(baseUrl, "")

  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 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]);

  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 = 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

  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)
  });
}

 assets/js/popover.js

New file
@@ -0,0 +1,34 @@
function htmlToElement(html) {
    const template = document.createElement('template')
    html = html.trim()
    template.innerHTML = html
    return template.content.firstChild
}

function initPopover(baseURL) {
    const basePath = baseURL.replace(window.location.origin, "")
    document.addEventListener("DOMContentLoaded", () => {
        fetchData.then(({ content }) => {
            const links = [...document.getElementsByClassName("internal-link")]
            links.forEach(li => {
                const linkDest = content[li.dataset.src.replace(basePath, "")]
                // const linkDest = content[li.dataset.src]
                if (linkDest) {
                    const popoverElement = `<div class="popover">
    <h3>${linkDest.title}</h3>
    <p>${removeMarkdown(linkDest.content).split(" ", 20).join(" ")}...</p>
    <p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
</div>`
                    const el = htmlToElement(popoverElement)
                    li.appendChild(el)
                    li.addEventListener("mouseover", () => {
                        el.classList.add("visible")
                    })
                    li.addEventListener("mouseout", () => {
                        el.classList.remove("visible")
                    })
                }
            })
        })
    })
}

 assets/js/search.js

New file
@@ -0,0 +1,247 @@
// code from https://github.com/danestves/markdown-to-text
const removeMarkdown = (
    markdown,
    options = {
        listUnicodeChar: false,
        stripListLeaders: true,
        gfm: true,
        useImgAltText: false,
        preserveLinks: false,
    }
) => {
    let output = markdown || "";
    output = output.replace(/^(-\s*?|\*\s*?|_\s*?){3,}\s*$/gm, "");

    try {
        if (options.stripListLeaders) {
            if (options.listUnicodeChar)
                output = output.replace(
                    /^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm,
                    options.listUnicodeChar + " $1"
                );
            else output = output.replace(/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm, "$1");
        }
        if (options.gfm) {
            output = output
                .replace(/\n={2,}/g, "\n")
                .replace(/~{3}.*\n/g, "")
                .replace(/~~/g, "")
                .replace(/`{3}.*\n/g, "");
        }
        if (options.preserveLinks) {
            output = output.replace(/\[(.*?)\][\[\(](.*?)[\]\)]/g, "$1 ($2)")
        }
        output = output
            .replace(/<[^>]*>/g, "")
            .replace(/^[=\-]{2,}\s*$/g, "")
            .replace(/\[\^.+?\](\: .*?$)?/g, "")
            .replace(/\s{0,2}\[.*?\]: .*?$/g, "")
            .replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "")
            .replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "$1")
            .replace(/^\s{0,3}>\s?/g, "")
            .replace(/(^|\n)\s{0,3}>\s?/g, "\n\n")
            .replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "")
            .replace(
                /^(\n)?\s{0,}#{1,6}\s+| {0,}(\n)?\s{0,}#{0,} {0,}(\n)?\s{0,}$/gm,
                "$1$2$3"
            )
            .replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
            .replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
            .replace(/(`{3,})(.*?)\1/gm, "$2")
            .replace(/`(.+?)`/g, "$1")
            .replace(/\n{2,}/g, "\n\n");
    } catch (e) {
        console.error(e);
        return markdown;
    }
    return output;
};
// -----

(async function () {
    const contentIndex = new FlexSearch.Document({
        cache: true,
        charset: "latin:extra",
        optimize: true,
        worker: true,
        document: {
            index: [{
                field: "content",
                tokenize: "strict",
                context: {
                    resolution: 5,
                    depth: 3,
                    bidirectional: true
                },
                suggest: true,
            }, {
                field: "title",
                tokenize: "forward",
            }]
        }
    })

    const { content } = await fetchData
    for (const [key, value] of Object.entries(content)) {
        contentIndex.add({
            id: key,
            title: value.title,
            content: removeMarkdown(value.content),
        })
    }

    const highlight = (content, term) => {
        const highlightWindow = 20
        const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
        const splitText = content.split(/\s+/).filter(t => t !== "")
        const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().startsWith(term.toLowerCase()))

        const occurrencesIndices = splitText
            .map(includesCheck)

        // calculate best index
        let bestSum = 0
        let bestIndex = 0
        for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) {
            const window = occurrencesIndices.slice(i, i + highlightWindow)
            const windowSum = window.reduce((total, cur) => total + cur, 0)
            if (windowSum >= bestSum) {
                bestSum = windowSum
                bestIndex = i
            }
        }

        const startIndex = Math.max(bestIndex - highlightWindow, 0)
        const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length)
        const mappedText = splitText
            .slice(startIndex, endIndex)
            .map(token => {
                if (includesCheck(token)) {
                    return `<span class="search-highlight">${token}</span>`
                }
                return token
            })
            .join(" ")
            .replaceAll('</span> <span class="search-highlight">', " ")
        return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}`
    }

    const resultToHTML = ({ url, title, content, term }) => {
        const text = removeMarkdown(content)
        const resultTitle = highlight(title, term)
        const resultText = highlight(text, term)
        return `<button class="result-card" id="${url}">
        <h3>${resultTitle}</h3>
        <p>${resultText}</p>
    </button>`
    }

    const redir = (id, term) => {
        window.location.href = BASE_URL + `${id}#:~:text=${encodeURIComponent(term)}`
    }

    const formatForDisplay = id => ({
        id,
        url: id,
        title: content[id].title,
        content: content[id].content
    })

    const source = document.getElementById('search-bar')
    const results = document.getElementById("results-container")
    let term
    source.addEventListener("keyup", (e) => {
        if (e.key === "Enter") {
            const anchor = document.getElementsByClassName("result-card")[0]
            redir(anchor.id, term)
        }
    })
    source.addEventListener('input', (e) => {
        term = e.target.value
        contentIndex.search(term, [
            {
                field: "content",
                limit: 10,
                suggest: true,
            },
            {
                field: "title",
                limit: 5,
            }
        ]).then(searchResults => {
            const getByField = field => {
                const results = searchResults.filter(x => x.field === field)
                if (results.length === 0) {
                    return []
                } else {
                    return [...results[0].result]
                }
            }
            const allIds = new Set([...getByField('title'), ...getByField('content')])
            const finalResults = [...allIds].map(formatForDisplay)

            // display
            if (finalResults.length === 0) {
                results.innerHTML = `<button class="result-card">
                    <h3>No results.</h3>
                    <p>Try another search term?</p>
                </button>`
            } else {
                results.innerHTML = finalResults
                    .map(result => resultToHTML({
                        ...result,
                        term,
                    }))
                    .join("\n")
                const anchors = document.getElementsByClassName("result-card");
                [...anchors].forEach(anchor => {
                    anchor.onclick = () => redir(anchor.id, term)
                })
            }
        })
    })


    const searchContainer = document.getElementById("search-container")

    function openSearch() {
        if (searchContainer.style.display === "none" || searchContainer.style.display === "") {
            source.value = ""
            results.innerHTML = ""
            searchContainer.style.display = "block"
            source.focus()
        } else {
            searchContainer.style.display = "none"
        }
    }

    function closeSearch() {
        searchContainer.style.display = "none"
    }

    document.addEventListener('keydown', (event) => {
        if (event.key === "/") {
            event.preventDefault()
            openSearch()
        }
        if (event.key === "Escape") {
            event.preventDefault()
            closeSearch()
        }
    })

    const searchButton = document.getElementById("search-icon")
    searchButton.addEventListener('click', (evt) => {
        openSearch()
    })
    searchButton.addEventListener('keydown', (evt) => {
        openSearch()
    })
    searchContainer.addEventListener('click', (evt) => {
        closeSearch()
    })
    document.getElementById("search-space").addEventListener('click', (evt) => {
        evt.stopPropagation()
    })
})()


 assets/styles/base.scss

File was renamed from assets/base.scss
@@ -238,7 +238,9 @@
  margin: 0;
  height: 100vh;
  width: 100vw;
  overflow-x: hidden;
  //overflow-x: hidden;
  max-width: 100%;
  box-sizing: border-box;
  background-color: var(--light);
}

@@ -268,10 +270,10 @@
}

.singlePage {
  margin: 4em 30vw;
  padding: 4em 30vw;

  @media all and (max-width: 1200px) {
    margin: 25px 5vw;
    padding: 25px 5vw;
  }
}


 assets/styles/custom.scss

 assets/styles/darkmode.scss

 assets/styles/syntax.scss

 content/notes/preview changes.md

@@ -17,7 +17,7 @@
$ cd <location-of-your-local-quartz>

# Scrape all links in your Quartz folder and generate info for Quartz
$ hugo-obsidian -input=content -output=static -index -root=.
$ hugo-obsidian -input=content -output=assets/indices -index -root=.
```

If you are running into an error saying that `command not found: hugo-obsidian`, make sure you set your `GOPATH` correctly! This will allow your terminal to correctly recognize hugo-obsidian as an executable.

 layouts/_default/section.html

@@ -19,6 +19,7 @@
    </article>
    {{partial "contact.html" .}}
</div>
{{partial "popover.html" .}}
</body>

</html>

 layouts/_default/single.html

@@ -32,6 +32,7 @@

    </article>
    {{partial "footer.html" .}}
    {{partial "popover.html" .}}
</div>
</body>


 layouts/_default/taxonomy.html

@@ -28,6 +28,7 @@
    </article>
    {{partial "contact.html" .}}
</div>
{{partial "popover.html" .}}
</body>

</html>

 layouts/_default/term.html

@@ -19,6 +19,7 @@
    </article>
    {{partial "contact.html" .}}
</div>
{{partial "popover.html" .}}
</body>

</html>

 layouts/index.html

@@ -22,6 +22,7 @@
        {{- .Content -}}
    </article>
    {{partial "footer.html" .}}
    {{partial "popover.html" .}}
</div>
</body>
</html>

 layouts/partials/backlinks.html

@@ -3,9 +3,9 @@
    {{$url := urls.Parse .Site.BaseURL }}
    {{$host := strings.TrimRight "/" $url.Path }}
    {{$curPage := strings.TrimPrefix $host (strings.TrimRight "/" .Page.RelPermalink) }}
    {{$linkIndex := getJSON "/static/linkIndex.json"}}
    {{$linkIndex := getJSON "/assets/indices/linkIndex.json"}}
    {{$inbound := index $linkIndex.index.backlinks $curPage}}
    {{$contentTable := getJSON "/static/contentIndex.json"}}
    {{$contentTable := getJSON "/assets/indices/contentIndex.json"}}
    {{if $inbound}}
    {{$cleanedInbound := apply (apply $inbound "index" "." "source") "replace" "." " " "-"}}
    {{- range $cleanedInbound | uniq -}}

 layouts/partials/graph.html

@@ -1,4 +1,4 @@
<script src="https://cdn.jsdelivr.net/npm/d3@6"></script>
<script src="https://cdn.jsdelivr.net/npm/d3@6.7.0/dist/d3.min.js" integrity="sha256-+7jaYCp29O1JusNWHaYtgUn6EhuP0VaFuswhNV06MyI=" crossorigin="anonymous"></script>
<h3>Interactive Graph</h3>
<div id="graph-container"></div>
<style>
@@ -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>

 layouts/partials/head.html

@@ -8,52 +8,38 @@

    <!-- CSS Stylesheets and Fonts -->
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Source+Sans+Pro:wght@400;600;700&family=Fira+Code:wght@400;700&display=swap" rel="stylesheet">
    {{$css := slice "base.scss" "darkmode.scss" "syntax.scss" "custom.scss"}}
    {{range $css}}
    {{$sass := resources.Get . | resources.ToCSS }}
    {{with $sass | minify}}
    <style>
        {{.Content | safeCSS}}
    </style>
    {{$sass := resources.Match "styles/[!_]*.scss" }}
    {{$css := slice }}
    {{range $sass}}
    {{$scss := . | resources.ToCSS (dict "outputStyle" "compressed") }}
    {{$css = $css | append $scss}}
    {{end}}
    {{end}}
    {{$finalCss := $css | resources.Concat "styles.css" | resources.Fingerprint "md5" | resources.Minify  }}
    <link href="{{$finalCss.Permalink}}" rel="stylesheet">

    {{- with resources.Get "darkmode.js" | minify -}}
    <script>
      {{.Content | safeJS }}
    </script>
    {{- end -}}
    {{ $darkMode := resources.Get "js/darkmode.js" |  resources.Fingerprint "md5" | resources.Minify }}
    <script src="{{$darkMode.Permalink}}"></script>

    <!--  Preload page vars  -->
    {{$linkIndex := resources.Get "indices/linkIndex.json" | resources.Fingerprint "md5" | resources.Minify |  }}
    {{$contentIndex := resources.Get "indices/contentIndex.json" | resources.Fingerprint "md5" | resources.Minify }}
    <script>
      let saved = false
      const fetchData = async () => {
        if (saved) {
          return saved
        } else {
          const promises = [
            fetch("{{ .Site.BaseURL }}/linkIndex.json")
      const BASE_URL = {{.Site.BaseURL}}
      const fetchData = Promise.all([
            fetch("{{ $linkIndex.Permalink }}")
              .then(data => data.json())
              .then(data => ({
                index: data.index,
                links: data.links,
              })),
            fetch("{{ .Site.BaseURL }}/contentIndex.json")
            fetch("{{ $contentIndex.Permalink }}")
              .then(data => data.json()),
          ]
          const [{index, links}, content] = await Promise.all(promises)
          const res = ({
          ])
          .then(([{index, links}, content]) => ({
            index,
            links,
            content,
          })
          saved = res
          return res
        }

      }
      fetchData()
          }))
    </script>
</head>
{{ template "_internal/google_analytics.html" . }}
{{ partial "popover.html" .}}

 layouts/partials/popover.html

@@ -1,35 +1,7 @@
{{if $.Site.Data.config.enableLinkPreview}}
{{ $js := resources.Get "js/popover.js" |  resources.Fingerprint "md5" | resources.Minify }}
<script src="{{ $js.Permalink }}"></script>
<script>
  function htmlToElement(html) {
    const template = document.createElement('template')
    html = html.trim()
    template.innerHTML = html
    return template.content.firstChild
  }
  const baseUrl = {{strings.TrimRight "/" .Site.BaseURL }}.replace(window.location.origin, "")
  document.addEventListener("DOMContentLoaded", () => {
    fetchData().then(({content}) => {
      const links = [...document.getElementsByClassName("internal-link")]
      links.forEach(li => {
        const linkDest = content[li.dataset.src.replace(baseUrl, "")]
        // const linkDest = content[li.dataset.src]
          if (linkDest) {
            const popoverElement = `<div class="popover">
    <h3>${linkDest.title}</h3>
    <p>${removeMarkdown(linkDest.content).split(" ", 20).join(" ")}...</p>
    <p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
</div>`
            const el = htmlToElement(popoverElement)
            li.appendChild(el)
            li.addEventListener("mouseover", () => {
              el.classList.add("visible")
            })
            li.addEventListener("mouseout", () => {
              el.classList.remove("visible")
            })
          }
        })
    })
  })
  initPopover({{strings.TrimRight "/" .Site.BaseURL }})
</script>
{{end}}

 layouts/partials/search.html

@@ -5,254 +5,6 @@
        </div>
    </div>
</div>
<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.7.2/dist/flexsearch.bundle.js"></script>
<script>
    // code from https://github.com/danestves/markdown-to-text
    const removeMarkdown = (
        markdown,
        options = {
            listUnicodeChar: false,
            stripListLeaders: true,
            gfm: true,
            useImgAltText: false,
            preserveLinks: false,
        }
    ) => {
        let output = markdown || "";
        output = output.replace(/^(-\s*?|\*\s*?|_\s*?){3,}\s*$/gm, "");

        try {
            if (options.stripListLeaders) {
                if (options.listUnicodeChar)
                    output = output.replace(
                        /^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm,
                        options.listUnicodeChar + " $1"
                    );
                else output = output.replace(/^([\s\t]*)([\*\-\+]|\d+\.)\s+/gm, "$1");
            }
            if (options.gfm) {
                output = output
                    .replace(/\n={2,}/g, "\n")
                    .replace(/~{3}.*\n/g, "")
                    .replace(/~~/g, "")
                    .replace(/`{3}.*\n/g, "");
            }
            if (options.preserveLinks) {
                output = output.replace(/\[(.*?)\][\[\(](.*?)[\]\)]/g, "$1 ($2)")
            }
            output = output
                .replace(/<[^>]*>/g, "")
                .replace(/^[=\-]{2,}\s*$/g, "")
                .replace(/\[\^.+?\](\: .*?$)?/g, "")
                .replace(/\s{0,2}\[.*?\]: .*?$/g, "")
                .replace(/\!\[(.*?)\][\[\(].*?[\]\)]/g, options.useImgAltText ? "$1" : "")
                .replace(/\[(.*?)\][\[\(].*?[\]\)]/g, "$1")
                .replace(/^\s{0,3}>\s?/g, "")
                .replace(/(^|\n)\s{0,3}>\s?/g, "\n\n")
                .replace(/^\s{1,2}\[(.*?)\]: (\S+)( ".*?")?\s*$/g, "")
                .replace(
                    /^(\n)?\s{0,}#{1,6}\s+| {0,}(\n)?\s{0,}#{0,} {0,}(\n)?\s{0,}$/gm,
                    "$1$2$3"
                )
                .replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
                .replace(/([\*_]{1,3})(\S.*?\S{0,1})\1/g, "$2")
                .replace(/(`{3,})(.*?)\1/gm, "$2")
                .replace(/`(.+?)`/g, "$1")
                .replace(/\n{2,}/g, "\n\n");
        } catch (e) {
            console.error(e);
            return markdown;
        }
        return output;
    };
</script>
<script>
async function run() {
  const contentIndex = new FlexSearch.Document({
    cache: true,
    charset: "latin:extra",
    optimize: true,
    worker: true,
    document: {
      index: [{
        field: "content",
        tokenize: "strict",
        context: {
          resolution: 5,
          depth: 3,
          bidirectional: true
        },
        suggest: true,
      }, {
        field: "title",
        tokenize: "forward",
      }]
    }
  })

  const { content } = await fetchData()
  for (const [key, value] of Object.entries(content)) {
    contentIndex.add({
      id: key,
      title: value.title,
      content: removeMarkdown(value.content),
    })
  }

  const highlight = (content, term) => {
    const highlightWindow = 20
    const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
    const splitText = content.split(/\s+/).filter(t => t !== "")
    const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().startsWith(term.toLowerCase()))

    const occurrencesIndices = splitText
      .map(includesCheck)

    // calculate best index
    let bestSum = 0
    let bestIndex = 0
    for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) {
      const window = occurrencesIndices.slice(i, i + highlightWindow)
      const windowSum = window.reduce((total, cur) => total + cur, 0)
      if (windowSum >= bestSum) {
        bestSum = windowSum
        bestIndex = i
      }
    }

    const startIndex = Math.max(bestIndex - highlightWindow, 0)
    const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length)
    const mappedText = splitText
      .slice(startIndex, endIndex)
      .map(token => {
        if (includesCheck(token)) {
          return `<span class="search-highlight">${token}</span>`
        }
        return token
      })
      .join(" ")
      .replaceAll('</span> <span class="search-highlight">', " ")
    return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}`
  }

  const resultToHTML = ({url, title, content, term}) => {
    const text = removeMarkdown(content)
    const resultTitle = highlight(title, term)
    const resultText = highlight(text, term)
    return `<button class="result-card" id="${url}">
        <h3>${resultTitle}</h3>
        <p>${resultText}</p>
    </button>`
  }

  const redir = (id, term) => {
    window.location.href = "{{.Site.BaseURL}}" + `${id}#:~:text=${encodeURIComponent(term)}`
  }

  const formatForDisplay = id => ({
    id,
    url: id,
    title: content[id].title,
    content: content[id].content
  })

  const source = document.getElementById('search-bar')
  const results = document.getElementById("results-container")
  let term
  source.addEventListener("keyup", (e) => {
    if (e.key === "Enter") {
      const anchor = document.getElementsByClassName("result-card")[0]
      redir(anchor.id, term)
    }
  })
  source.addEventListener('input', (e) => {
    term = e.target.value
    contentIndex.search(term, [
      {
        field: "content",
        limit: 10,
        suggest: true,
      },
      {
        field: "title",
        limit: 5,
      }
    ]).then(searchResults => {
      const getByField = field => {
        const results = searchResults.filter(x => x.field === field)
        if (results.length === 0) {
          return []
        } else {
          return [...results[0].result]
        }
      }
      const allIds = new Set([...getByField('title'), ...getByField('content')])
      const finalResults = [...allIds].map(formatForDisplay)

      // display
      if (finalResults.length === 0) {
        results.innerHTML = `<button class="result-card">
                    <h3>No results.</h3>
                    <p>Try another search term?</p>
                </button>`
      } else {
        results.innerHTML = finalResults
          .map(result => resultToHTML({
            ...result,
            term,
          }))
          .join("\n")
        const anchors = document.getElementsByClassName("result-card");
        [...anchors].forEach(anchor => {
          anchor.onclick = () => redir(anchor.id, term)
        })
      }
    })
  })


  const searchContainer = document.getElementById("search-container")

  function openSearch() {
    if (searchContainer.style.display === "none" || searchContainer.style.display === "") {
      source.value = ""
      results.innerHTML = ""
      searchContainer.style.display = "block"
      source.focus()
    } else {
      searchContainer.style.display = "none"
    }
  }

  function closeSearch() {
    searchContainer.style.display = "none"
  }

  document.addEventListener('keydown', (event) => {
    if (event.key === "/") {
      event.preventDefault()
      openSearch()
    }
    if (event.key === "Escape") {
      event.preventDefault()
      closeSearch()
    }
  })

  const searchButton = document.getElementById("search-icon")
  searchButton.addEventListener('click', (evt) => {
    openSearch()
  })
  searchButton.addEventListener('keydown', (evt) => {
    openSearch()
  })
  searchContainer.addEventListener('click', (evt) => {
    closeSearch()
  })
  document.getElementById("search-space").addEventListener('click', (evt) => {
    evt.stopPropagation()
  })
}

run()
</script>
<script src="https://cdn.jsdelivr.net/npm/flexsearch@0.7.21/dist/flexsearch.bundle.js" integrity="sha256-i3A0NZGkhsKjVMzFxv3ksk0DZh3aXqu0l49Bbh0MdjE=" crossorigin="anonymous" defer></script>
{{ $js := resources.Get "js/search.js" |  resources.Fingerprint "md5" | resources.Minify }}
<script defer src="{{ $js.Permalink }}"></script>