thermograph/frontend/server/internal/render/templates/base.html.tmpl

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frontend: rewrite the SSR content service in Go (#28) Ports frontend/ (Jinja2/FastAPI, ~1180 LOC) to Go with html/template. No climate math, no DB, no auth -- every route fetches from the backend's /content/* API. Verified with a golden-HTML diff, not just unit tests: both the Python original and the Go rewrite were run against the same committed fixtures and every route compared byte-for-byte, confirmed programmatically. That process caught defects unit tests alone missed, since map[string]any has no compile-time field check: - Render-context keys were snake_case throughout while the templates read PascalCase fields. A missing map key doesn't error, it silently renders empty -- title, meta description, canonical URL, OpenGraph tags, and the homepage's entire ranked list were blank on every page despite every route returning 200. Fixed by renaming every key to match each template's own documented field contract, and passing API structs straight through wherever their fields already matched (removes a whole layer of future drift risk). - Three pages 500'd: ToolHref needed a composed href, not a bare "lat,lon" fragment; the records table needed the raw API struct. - JSON-LD was double-encoded: <script type="application/ld+json"> is JAVASCRIPT context to html/template's escaper regardless of the script's type attribute, so template.HTML gets re-escaped as a quoted JS string. Needed template.JS. The glossary term page's JSON-LD was never built at all -- added. - html/template silently strips literal HTML and JS comments from parsed output (verified in isolation) -- both need a FuncMap function returning template.HTML/template.JS to survive. Packaging: 187MB -> 22.6MB. Two defects caught before reaching a host: the Swarm stack's entrypoint override with no explicit command drops the image's CMD entirely (every deploy would have exited 127), and COPY --chown by name fails under the classic Docker builder on Alpine. Both fixed. go build/vet/test -race clean; docker build passes its embedded test step under both BuildKit and the classic builder; shellcheck 0 findings.
2026-07-24 00:53:48 +00:00
{{/*
Ported from templates/base.html.j2 (Jinja, trim_blocks + lstrip_blocks +
keep_trailing_newline=False). The Jinja layout used {% extends %}/{% block %};
in a single html/template parse set a per-page {{define "title"}} would
collide across the 10 pages, so the layout is instead split into sequential
chunks that every page template stitches together in order:
base_head_start doctype .. the manifest <link>. title/description/
canonical/og:* are data-driven (.PageTitle,
.PageDescription, .CanonicalPath) — the og:title /
og:url duplication Jinja did via self.title() falls
out for free.
[page head_extra] inline in the page file (home: leaflet css)
base_head_end the style.css <link>
[page jsonld] inline in the page file (city/records/glossary_term/home)
base_body_start </head> .. <body> header + nav .. <main ...>
[page content]
base_body_end </main> .. footer
[page body_scripts] base_scripts_default, or the page's own (home)
base_tail digest/ios-install scripts, </body></html>
Whitespace mirrors the Jinja env's exact output byte-for-byte (golden-diff
contract): control tags on their own line vanished entirely under
trim_blocks/lstrip_blocks, so here the equivalent actions are glued to the
start of the following content line; keep_trailing_newline=False means the
document ends at </html> with no final newline (see base_tail).
HTML comments that must SURVIVE into the output go through the `comment`
FuncMap helper, because html/template strips literal <!-- --> comments.
Data contract (all pages): .Base .AssetBase .AssetBaseURL .BaseURL
.UnitDefault .Section .BrandTag ("h1"; home passes "p") .MainClass
("content"; home passes "") .PageTitle .PageDescription .CanonicalPath
.Fmt (unit-bound formatter: Temp/TempBare/TempClass) and, on pages that have
one, .Breadcrumb []contentapi.Crumb.
*/}}
{{define "base_head_start" -}}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
{{head_verify}}
<title>{{.PageTitle}}</title>
<meta name="description" content="{{.PageDescription}}" />
<meta name="theme-color" content="#f0803c" />
{{comment `iOS/Android home-screen install: run standalone (no browser chrome) when
added to the Home Screen. On iOS 16.4+ this is what unlocks Web Push.`}}
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="apple-mobile-web-app-title" content="Thermograph" />
<link rel="canonical" href="{{.BaseURL}}{{.CanonicalPath}}" />
<meta property="og:type" content="website" />
<meta property="og:site_name" content="Thermograph" />
<meta property="og:title" content="{{.PageTitle}}" />
<meta property="og:description" content="{{.PageDescription}}" />
<meta property="og:url" content="{{.BaseURL}}{{.CanonicalPath}}" />
<meta property="og:image" content="{{.AssetBaseURL}}/logo.png?v=3" />
<meta property="og:image:width" content="512" />
<meta property="og:image:height" content="512" />
<meta property="og:image:alt" content="Thermograph logo" />
<meta name="twitter:card" content="summary" />
<link rel="icon" href="{{.AssetBase}}/favicon.svg?v=3" type="image/svg+xml" />
<link rel="icon" href="{{.AssetBase}}/favicon-48.png?v=3" type="image/png" sizes="48x48" />
<link rel="icon" href="{{.AssetBase}}/favicon-32.png?v=3" type="image/png" sizes="32x32" />
<link rel="icon" href="{{.AssetBase}}/favicon-16.png?v=3" type="image/png" sizes="16x16" />
<link rel="apple-touch-icon" href="{{.AssetBase}}/apple-touch-icon.png?v=3" />
<link rel="manifest" href="{{.AssetBase}}/manifest.webmanifest" />
{{end}}
{{define "base_head_end" -}}
<link rel="stylesheet" href="{{.AssetBase}}/style.css" />
{{end}}
{{/* The brand lockup (logo svg + wordmark) shared by both brand-tag variants
below. */}}
{{define "brand_link"}}<a href="{{.Base}}/"><span class="logo"><svg viewBox="0 0 512 512" width="28" height="28" aria-hidden="true"><rect x="32" y="32" width="448" height="448" rx="96" fill="#10141B" stroke="#FFFFFF" stroke-opacity="0.08" stroke-width="4"/><rect x="115" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="163" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="211" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="259" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="307" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="355" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="403" y="403" width="42" height="42" rx="10" fill="#111924"/><rect x="163" y="355" width="42" height="42" rx="10" fill="#131C25"/><rect x="211" y="355" width="42" height="42" rx="10" fill="#131C25"/><rect x="259" y="355" width="42" height="42" rx="10" fill="#131C25"/><rect x="307" y="355" width="42" height="42" rx="10" fill="#131C25"/><rect x="355" y="355" width="42" height="42" rx="10" fill="#131C25"/><rect x="403" y="355" width="42" height="42" rx="10" fill="#131C25"/><rect x="67" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="163" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="211" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="259" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="307" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="355" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="403" y="307" width="42" height="42" rx="10" fill="#181F27"/><rect x="67" y="259" width="42" height="42" rx="10" fill="#131C1F"/><rect x="211" y="259" width="42" height="42" rx="10" fill="#131C1F"/><rect x="403" y="259" width="42" height="42" rx="10" fill="#131C1F"/><rect x="67" y="211" width="42" height="42" rx="10" fill="#1E1E22"/><rect x="115" y="211" width="42" height="42" rx="10" fill="#1E1E22"/><rect x="211" y="211" width="42" height="42" rx="10" fill="#1E1E22"/><rect x="307" y="211" width="42" height="42" rx="10" fill="#1E1E22"/><rect x="67" y="163" width="42" height="42" rx="10" fill="#1D1C1E"/><rect x="115" y="163" width="42" height="42" rx="10" fill="#1D1C1E"/><rect x="307" y="163" width="42" height="42" rx="10" fill="#1D1C1E"/><rect x="355" y="163" width="42" height="42" rx="10" fill="#1D1C1E"/><rect x="67" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="115" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="163" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="211" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="259" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="307" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="355" y="115" width="42" height="42" rx="10" fill="#1C191E"/><rect x="67" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="115" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="163" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="211" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="259" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="307" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="355" y="67" width="42" height="42" rx="10" fill="#18141B"/><rect x="67" y="403" width="42" height="42" rx="10" fill="#2166ac"/><rect x="67" y="355" width="42" height="42" rx="10" fill="#4393c3"/><rect x="115" y="355" width="42" height="42" rx="10" fill="#4393c3"/><rect x="115" y="307" width="42" height="42" rx="10" fill="#92c5de"/><rect x="115" y="259" width="42" height="42" rx="10" fill="#4a9d5b"/><rect x="163" y="259" width="42" height="42" rx="10" fill="#4a9d5b"/><rect x="163" y="211" width="42" height="42" rx="10" fill="#f6c18a"/><rect x="163" y="163" width="42" height="42" rx="10" fill="#ef9351"/><rect x="211" y="163" width="42" height="42" rx="10" fill="#ef9351"/><rect x="259" y="163" width="42" height="42" rx="10" fill="#ef9351"/><rect x="259" y="211" width="42" height="42" rx="10" fill=
{{define "base_body_start" -}}
</head>
<body{{if .UnitDefault}} data-unit-default="{{.UnitDefault}}"{{end}}>
<header>
<div class="brand">
<div>{{/* The brand is the page's h1 everywhere EXCEPT the homepage, where the
hero headline owns the sole h1 and the brand degrades to a <p>. The
.brand h1, .brand .site-name selector pair in style.css keeps the
lockup looking identical either way. (The Jinja original wrote
<{{ brand_tag|default('h1') }} …>; html/template forbids actions in
tag names, hence two literal branches around one shared lockup.) */}}
{{if eq .BrandTag "p"}}<p class="site-name">{{template "brand_link" .}}</p>{{else}}<h1 class="site-name">{{template "brand_link" .}}</h1>{{end}}
<p class="tag">How unusual is the weather? Graded against ~45 years of local climate history.</p>
</div>
<details class="nav-menu">
<summary class="nav-toggle" aria-label="Menu"><svg viewBox="0 0 24 24" width="22" height="22" aria-hidden="true" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><path d="M4 7h16M4 12h16M4 17h16"/></svg></summary>
<div class="nav-panel">{{/* data-view marks the links nav.js rewrites to carry the current
location hash, so moving between views keeps the place you picked.
Climate and Alerts deliberately opt out (they aren't cell-scoped).
Inert on the SEO pages, which never load nav.js. */}}
<nav class="view-nav" aria-label="Views">
<a href="{{.Base}}/" data-view="map"{{if eq .Section "home"}} class="active"{{end}}>Weekly</a>
<a href="{{.AssetBase}}/calendar" data-view="calendar">Calendar</a>
<a href="{{.AssetBase}}/day" data-view="day">Day Detail</a>
<a href="{{.AssetBase}}/compare" data-view="compare">Compare</a>
<a href="{{.AssetBase}}/score" data-view="score"{{if eq .Section "score"}} class="active"{{end}}>Score</a>
<a href="{{.Base}}/climate"{{if eq .Section "climate"}} class="active"{{end}}>Climate</a>
<a href="{{.AssetBase}}/alerts">Alerts</a>
</nav>
</div>
</details>
</div>
</header>
<main{{if .MainClass}} class="{{.MainClass}}"{{end}}>
{{end}}
{{define "base_body_end" -}}
</main>
<footer class="site-footer">{{/* The compact digest signup is the site-wide footer pattern, not a
homepage-only surface: every page is a possible entry point.
Hidden for now; restore by uncommenting the form block below
(kept verbatim from the Jinja original — {{ asset_base }} becomes
{{.AssetBase}} when it comes back):
<form class="digest-form digest-compact" method="post" action="{{ asset_base }}/digest"
data-digest aria-labelledby="footer-digest-label">
<label id="footer-digest-label" for="footer-digest-email">Your city's weather, graded — monthly</label>
<div class="digest-row">
<input id="footer-digest-email" name="email" type="email" required
autocomplete="email" placeholder="you@example.com" />
<button type="submit">Get the digest</button>
</div>
<p class="digest-note muted">No spam, no sharing your address, unsubscribe anytime.</p>
<p class="digest-status" role="status" aria-live="polite" hidden></p>
</form>
*/}}
<nav aria-label="Footer">
<a href="{{.Base}}/climate">City climates</a>
<a href="{{.Base}}/glossary">Weather glossary</a>
<a href="{{.Base}}/about">About &amp; methodology</a>
<a href="{{.Base}}/privacy">Privacy</a>
<a href="{{.Base}}/">Open the tool</a>
</nav>
<p class="muted">Free. No ads. No tracking. No account needed. Built by one person in the open.</p>
<p class="muted">Thermograph grades weather by its percentile against ~45 years of local
climate history. Data: ERA5 via Open-Meteo &middot; NASA POWER &middot; MET Norway.</p>
<p class="muted">Made by <a href="https://emigriffith.dev">emigriffith.dev</a>
<a href="mailto:emerytgriffith@gmail.com" aria-label="Email" title="emerytgriffith@gmail.com">@</a></p>
</footer>
{{end}}
{{define "base_scripts_default" -}}
{{comment `Header parity with the interactive pages: the °F/°C toggle, account + bell,
and the client-side temperature converter. All self-contained modules.`}}
<script type="module" src="{{.AssetBase}}/units.js"></script>
<script type="module" src="{{.AssetBase}}/account.js"></script>
<script type="module" src="{{.AssetBase}}/climate.js"></script>
{{end}}
{{define "base_tail" -}}
<script type="module" src="{{.AssetBase}}/digest.js"></script>
<script type="module" src="{{.AssetBase}}/ios-install.js"></script>
</body>
</html>{{end}}
{{/* Shared breadcrumb nav (each Jinja page repeated this line verbatim; the
output is identical, so it is factored here). The separator is emitted
BEFORE every non-first crumb — same byte stream as Jinja's
`{% if not loop.last %}` after-each-but-last. Crumb.Href is *string
(terminal crumb: null). */}}
{{define "breadcrumb" -}}
<nav class="breadcrumb" aria-label="Breadcrumb">
{{range $i, $c := .Breadcrumb}}{{if $i}} <span class="sep"></span> {{end}}{{if $c.Href}}<a href="{{$c.Href}}">{{$c.Name}}</a>{{else}}<span>{{$c.Name}}</span>{{end}}{{end -}}
</nav>
{{end}}