repo.ts

1import type { Hono } from "hono";2import { describeFile } from "../describe/describe.ts";3import {4	fileAt,5	filesAt,6	headId,7	history,8	objectBytes,9	repoStats,10	type Save,11	saveByPrefix,12	timeline,13} from "../mirror/queries.ts";14import { visibleReleases } from "../releases/releases.ts";15import { setting } from "../server/db.ts";16import { atlasSection } from "./atlas.ts";17import { type Html, html } from "./html.ts";18import {19	cacheFor,20	notFound,21	openPublicRepo,22	type PageContext,23	type PublicRepo,24	page,25	plural,26	relativeTime,27} from "./layout.ts";28import { renderMarkdown, renderParagraph } from "./markdown.ts";29import { timelineSvg } from "./timeline.ts";3031const PAGE_SIZE = 50;32// Each opens inline under the tabs (kepr.js), as Kepr 2's panels did; the page is the fallback.33const PANELS = [34	["issues", "issues"],35	["builds", "releases"],36	["archives", "archives"],37];38const HTTP_URL = /^https?:\/\//i;3940export function registerRepoPage(app: Hono, ctx: PageContext): void {41	app.get("/:repo", (c) => {42		const repo = openPublicRepo(ctx, c.req.param("repo"));43		if (!repo) return notFound(c, ctx);44		// `?at=<id>` shows the Atlas at that save (§21.5); the rest of the page stays at HEAD.45		const at = c.req.query("at");46		const atSave = at === undefined ? null : saveByPrefix(repo.mirror, at);47		if (at !== undefined && !atSave) return notFound(c, ctx);48		const pageNumber = Math.max(1, Number.parseInt(c.req.query("page") ?? "1", 10) || 1);49		const name = repo.settings.name;50		const intro = repoIntro(repo);51		cacheFor(c, false);52		return c.html(53			page(ctx, {54				title: name,55				description: intro?.text ?? "",56				path: `/${name}`,57				body: html`${header(ctx, repo, intro?.html ?? null)}58${headId(repo.mirror) && sections(repo, pageNumber, atSave?.id ?? null)}59${details(repoDetails(repo))}`,60			}),61		);62	});63}6465/**66 * The repo's description, as markup and as plain text: the operator's own, or else the README's67 * first paragraph (§21.4).68 */69export function repoIntro(repo: PublicRepo): { html: Html; text: string } | null {70	const { name, description } = repo.settings;71	if (description)72		return renderParagraph(description, { repo: name, dir: "", at: null, own: true });73	const readme = readmeAtHead(repo.mirror);74	const paragraph = readme === null ? null : describeFile("README.md", readme);75	return paragraph === null ? null : renderParagraph(paragraph, { repo: name, dir: "", at: null });76}7778/** The details section: the operator's own Markdown, or else the rendered README. */79export function repoDetails(repo: PublicRepo): Html | null {80	const { name, details } = repo.settings;81	if (details) return renderMarkdown(details, { repo: name, dir: "", at: null, own: true });82	const readme = readmeAtHead(repo.mirror);83	return readme === null ? null : renderMarkdown(readme, { repo: name, dir: "", at: null });84}8586export function readmeAtHead(mirror: PublicRepo["mirror"]): string | null {87	const head = headId(mirror);88	const path =89		head && filesAt(mirror, head).find((f) => f.path.toLowerCase() === "readme.md")?.path;90	const file = head && path ? fileAt(mirror, head, path) : null;91	const bytes = file && objectBytes(mirror, file.hash);92	return bytes ? new TextDecoder().decode(bytes) : null;93}9495function header(ctx: PageContext, repo: PublicRepo, intro: Html | null): Html {96	const { name, homepage, languages } = repo.settings;97	const steal = `koh steal ${ctx.domain}/${name}`;98	const stats = repoStats(repo.mirror);99	const handle = setting(ctx.kepr, "handle");100	// §21.4: the version is the newest release; with none, the header shows no version.101	const newest = visibleReleases(ctx.kepr, repo.mirror, name)[0];102	const meta = [103		newest && `v${newest.version}`,104		plural(stats.saves, "save"),105		stats.lines > 0 && plural(stats.lines, "line"),106		stats.updated !== null && `updated ${relativeTime(stats.updated)}`,107	].filter(Boolean);108	return html`<header class="repo-head">109<h1 class="repo-name">${name}</h1>110${handle && html`<p class="repo-contributor mono"><a href="/@${handle}">@${handle}</a></p>`}111${html`<div class="repo-desc"${!intro && " hidden"}><p>${intro}</p></div>`}112${113	HTTP_URL.test(homepage) &&114	html`<p class="repo-homepage"><a href="${homepage}">${homepage}</a></p>`115}116${117	(languages.length > 0 || stats.language) &&118	html`<div class="lang-badges">${(languages.length > 0 ? languages : [stats.language]).map(119		(language) => html`<span class="lang-badge">${language}</span>`,120	)}</div>`121}122<p class="repo-meta">${meta.join(" · ")}</p>123<div class="repo-tabbar">124<nav class="repo-tabs" aria-label="Repository panels">${PANELS.map(125		([label, path]) =>126			html`<a class="repo-tab" href="/${name}/${path}" data-panel="${path}">${label}</a>`,127	)}</nav>128<div class="install-lines">129<button type="button" class="repo-steal-btn" data-copy="${steal}">${steal}</button>130</div>131</div>132<div class="repo-panel" hidden></div>133</header>`;134}135136function sections(repo: PublicRepo, requestedPage: number, at: string | null): Html {137	const name = repo.settings.name;138	const saves = timeline(repo.mirror);139	// Past the last page, even at an unbindable number like Infinity, is page 1.140	const pageNumber = (requestedPage - 1) * PAGE_SIZE < saves.length ? requestedPage : 1;141	const rows = history(repo.mirror, PAGE_SIZE, (pageNumber - 1) * PAGE_SIZE);142	const pages: Pages = {143		at,144		newer: pageNumber > 1 ? pageNumber - 1 : null,145		older: pageNumber * PAGE_SIZE < saves.length ? pageNumber + 1 : null,146	};147	const atlas = atlasSection(repo, at ?? (headId(repo.mirror) as string), at, saves);148	return html`<section class="repo-section">149<details class="repo-section-toggle" open>150<summary class="section-head"><span class="section-label">timeline</span></summary>151${timelineSvg(name, saves)}152</details>153</section>154${atlas}155<section class="repo-section" id="history">156<details class="repo-section-toggle" open>157<summary class="section-head"><span class="section-label">history</span></summary>158${saveList(name, rows, pages)}159</details>160</section>`;161}162163type Pages = { at: string | null; newer: number | null; older: number | null };164165/**166 * One page of saves in a box that scrolls four rows at a time, as Kepr 2's; kepr.js fetches the167 * older pages into it as it scrolls, and without JavaScript the pager links page the whole view.168 */169function saveList(repo: string, rows: Save[], pages: Pages): Html {170	const pageHref = (n: number) => {171		const query = new URLSearchParams(pages.at ? { at: pages.at } : {});172		query.set("page", String(n));173		return `?${query}#history`;174	};175	return html`<div class="save-list" data-list="history">176${rows.map(177	(save) =>178		html`<a class="history-row" href="/${repo}/saves/${save.id}"><span class="history-id">${save.id}</span><span class="history-msg">${save.message.split("\n")[0]}</span><span class="history-when">${relativeTime(save.created_at)}</span></a>`,179)}180${181	(pages.newer || pages.older) &&182	html`<p class="pager mono">${pages.newer && html`<a href="${pageHref(pages.newer)}">← newer</a>`}${pages.older && html`<a class="pager-older" href="${pageHref(pages.older)}">older →</a>`}</p>`183}184</div>`;185}186187// Empty and hidden when there is nothing to show, so a signed-in editor still has a place to write.188function details(body: Html | null): Html {189	return html`<section class="repo-details"${!body && " hidden"}>190<details class="repo-details-toggle" open>191<summary class="repo-details-head">details</summary>192<div class="repo-details-body markdown">${body}</div>193</details>194</section>`;195}