/*
    Recursively render an ordered or unordered list from a set of arbitrarily-
    deeply-nested items.

    @params all_pages  All site pages
*/

var map = L.map('map', {
    fullscreenControl: true
}).setView([55, -3], 3);

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
    maxZoom: 19,
    attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>'
}).addTo(map);

{{- $locations := partialCached "util/get_location_leaf_nodes.html" $.Site.Data.locations -}}

{{/*
{{- range .Site.AllPages -}}
    {{- with .Params.locations -}}
        {{- range . -}}
            {{- with ( index $locations ( replaceRE `, [A-Z]+` "" . ) ) -}}
                L.marker([{{ .lat }}, {{ .lon }}]).addTo(map);
        {{- end -}}
        {{- end -}}
    {{- end -}}
{{- end -}}
*/}}

L.heatLayer(
    [
    {{- range .all_pages -}}
        {{- with .Params.locations -}}
            {{- range . -}}
                {{- with ( index $locations ( replaceRE `, [A-Z]+` "" . ) ) -}}
                    [ {{ .lat }}, {{ .lon }} ],
                {{- end -}}
            {{- end -}}
        {{- end -}}
    {{- end -}}
    ],
    {
        minOpacity: 0.5,
        gradient: {0.1: 'blue', 0.3: 'lime', 0.8: 'orange', 1: 'red'}
    }
).addTo(map);