4450003bd7
Fixes a long-standing todo by adding an additional field for the time at which a post was updated, and handling this in both site generation (to note the update date after the publish date) and in Atom feed generation (by populating both the updated and published fields). Change-Id: If80db43459b2a0c77eea4dde7255651b5d6cd64b Reviewed-on: https://cl.tvl.fyi/c/depot/+/2766 Reviewed-by: tazjin <mail@tazj.in> Tested-by: BuildkiteCI
101 lines
3.2 KiB
Nix
101 lines
3.2 KiB
Nix
# This file defines various fragments of the blog, such as the header
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# and footer, as functions that receive arguments to be templated into
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# them.
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#
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# An entire post is rendered by `renderPost`, which assembles the
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# fragments together in a runCommand execution.
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#
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# The post index is generated by //users/tazjin/homepage, not by this
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# code.
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{ depot, lib, ... }:
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let
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inherit (builtins) filter map hasAttr replaceStrings;
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inherit (depot.third_party) runCommandNoCC writeText;
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inherit (depot.users.tazjin) renderMarkdown;
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# Generate a post list for all listed, non-draft posts.
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isDraft = post: (hasAttr "draft" post) && post.draft;
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isUnlisted = post: (hasAttr "listed" post) && !post.listed;
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escape = replaceStrings [ "<" ">" "&" "'" ] [ "<" ">" "&" "'" ];
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header = title: ''
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<!DOCTYPE html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="description" content="tazjin's blog">
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<link rel="stylesheet" type="text/css" href="/static/tazjin.css" media="all">
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<link rel="icon" type="image/webp" href="/static/favicon.webp">
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<link rel="alternate" type="application/atom+xml" title="Atom Feed" href="/feed.atom">
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<title>tazjin's blog: ${escape title}</title>
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</head>
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<body class="light">
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<header>
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<h1><a class="blog-title" href="/">tazjin's interblag</a> </h1>
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<hr>
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</header>
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'';
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footer = ''
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<hr>
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<footer>
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<p class="footer">
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<a class="uncoloured-link" href="https://tazj.in">homepage</a>
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<a class="uncoloured-link" href="https://cs.tvl.fyi/">code</a>
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</p>
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<p class="lod">ಠ_ಠ</p>
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</footer>
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</body>
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'';
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draftWarning = writeText "draft.html" ''
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<p class="cheddar-callout cheddar-warning">
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<b>Note:</b> This post is a <b>draft</b>! Please do not share
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the link to it without asking me first.
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</p>
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<hr>
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'';
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unlistedWarning = writeText "unlisted.html" ''
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<p class="cheddar-callout cheddar-warning">
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<b>Note:</b> This post is <b>unlisted</b>! Please do not share
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the link to it without asking me first.
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</p>
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<hr>
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'';
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renderPost = post: runCommandNoCC "${post.key}.html" {} ''
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cat ${writeText "header.html" (header post.title)} > $out
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# Write the post title & date
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echo '<article><h2 class="inline">${escape post.title}</h2>' >> $out
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echo '<aside class="date">' >> $out
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date --date="@${toString post.date}" '+%Y-%m-%d' >> $out
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${
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if post ? updated
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then ''date --date="@${toString post.updated}" '+ (updated %Y-%m-%d)' >> $out''
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else ""
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}
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echo '</aside>' >> $out
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${
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# Add a warning to draft/unlisted posts to make it clear that
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# people should not share the post.
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if (isDraft post) then "cat ${draftWarning} >> $out"
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else if (isUnlisted post) then "cat ${unlistedWarning} >> $out"
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else "# Your ads could be here?"
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}
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# Write the actual post through cheddar's about-filter mechanism
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cat ${renderMarkdown post.content} >> $out
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echo '</article>' >> $out
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cat ${writeText "footer.html" footer} >> $out
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'';
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in {
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inherit renderPost isDraft isUnlisted;
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}
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