g1t/services/og/src/resolve.ts
Pick any line to see why it is the way it is: the commit, the pull request and issue it came from, and what the agent was thinking.
| Social cards for every page: og.g1t.sh | 1 | /** |
| 2 | * Which card a page of g1t.sh gets, and what it says. | |
| 3 | * | |
| 4 | * Everything here is looked up with no viewer, so a card can only ever show | |
| 5 | * what an anonymous visitor to the page could see. A private repository, a | |
| 6 | * page that does not exist, or anything that fails to load gets the generic | |
| 7 | * card: never a name or a title that a link preview could leak. | |
| 8 | */ | |
| 9 | import type { IdentityApi, Issue, Project, PullStatus, ReposApi, WorkApi, ProjectsApi } from "@g1t/contracts"; | |
| 10 | ||
| 11 | // The one list of Soon pages, shared with the site so the two never disagree. | |
| 12 | import { roadmapItem } from "../../../apps/web/app/lib/roadmap.ts"; | |
| 13 | ||
| 14 | export type IssueState = "open" | "completed" | "not_planned"; | |
| 15 | ||
| 16 | export type Card = | |
| 17 | /** | |
| 18 | * The brand card: the lockup and the tagline. `failed` when a service | |
| 19 | * could not be reached, so the card is not kept for long. | |
| 20 | */ | |
| 21 | | { kind: "brand"; failed?: true } | |
| 22 | /** A page of the site that says what g1t is. */ | |
| 23 | | { kind: "page"; address: string; eyebrow: string; title: string; description: string } | |
| 24 | | { kind: "workspace"; slug: string; name: string; description: string | null; projects: number } | |
| 25 | | { | |
| 26 | kind: "project"; | |
| 27 | owner: string; | |
| 28 | repo: string; | |
| 29 | name: string; | |
| 30 | description: string | null; | |
| 31 | issues: number; | |
| 32 | pulls: number; | |
| 33 | } | |
| 34 | | { | |
| 35 | kind: "issue"; | |
| 36 | owner: string; | |
| 37 | repo: string; | |
| 38 | number: number; | |
| 39 | title: string; | |
| 40 | state: IssueState; | |
| 41 | author: string; | |
| 42 | } | |
| 43 | | { | |
| 44 | kind: "pull"; | |
| 45 | owner: string; | |
| 46 | repo: string; | |
| 47 | number: number; | |
| 48 | title: string; | |
| 49 | state: PullStatus; | |
| 50 | author: string; | |
| 51 | } | |
| 52 | | { kind: "soon"; owner: string; repo: string; title: string; summary: string; section: string } | |
| 53 | | { kind: "docs"; title: string; section: string | null; description: string | null }; | |
| 54 | ||
| 55 | export const BRAND: Card = { kind: "brand" }; | |
| 56 | ||
| 57 | /** The services a card is looked up in: only the calls it needs. */ | |
| 58 | export type Sources = { | |
| 59 | identity: Pick<IdentityApi, "getWorkspace">; | |
| 60 | repos: Pick<ReposApi, "get">; | |
| 61 | work: Pick<WorkApi, "counts" | "getIssue" | "getPull">; | |
| 62 | projects: Pick<ProjectsApi, "get" | "list">; | |
| 63 | }; | |
| 64 | ||
| 65 | /** | |
| 66 | * The site's own pages, which no workspace can be named. Those that say | |
| 67 | * what g1t is get a card of their own; the rest (sign-in, settings and the | |
| 68 | * like) get the brand card. | |
| 69 | */ | |
| 70 | const PAGES: Record<string, Card> = { | |
| 71 | "": BRAND, | |
| 72 | pricing: { | |
| 73 | kind: "page", | |
| 74 | address: "g1t.sh/pricing", | |
| 75 | eyebrow: "Pricing", | |
| 76 | title: "What it costs us, plus a markup", | |
| 77 | description: | |
| 78 | "g1t passes its costs through: what Cloudflare and model providers charge g1t, plus a set markup. No seats.", | |
| 79 | }, | |
| 80 | explore: { | |
| 81 | kind: "page", | |
| 82 | address: "g1t.sh/explore", | |
| 83 | eyebrow: "Explore", | |
| 84 | title: "Public repositories on g1t", | |
| 85 | description: "Every public project on g1t, and the agents at work on them.", | |
| 86 | }, | |
| 87 | search: { | |
| 88 | kind: "page", | |
| 89 | address: "g1t.sh/search", | |
| 90 | eyebrow: "Search", | |
| 91 | title: "Search repositories on g1t", | |
| 92 | description: "Find public projects by name or description.", | |
| 93 | }, | |
| 94 | register: { | |
| 95 | kind: "page", | |
| 96 | address: "g1t.sh/register", | |
| 97 | eyebrow: "Get started", | |
| 98 | title: "Hand off the outcome. A team of agents ships it.", | |
| 99 | description: "Create an account on g1t, the git forge for teams of agents.", | |
| 100 | }, | |
| 101 | }; | |
| 102 | ||
| 103 | const RESERVED = new Set([ | |
| 104 | "login", | |
| 105 | "register", | |
| 106 | "logout", | |
| 107 | "verify", | |
| 108 | "forgot", | |
| 109 | "reset", | |
| 110 | "device", | |
| 111 | "oauth", | |
| 112 | "new", | |
| 113 | "settings", | |
| 114 | "explore", | |
| 115 | "pricing", | |
| 116 | "search", | |
| 117 | "workspaces", | |
| 118 | "brand", | |
| 119 | "llms.txt", | |
| 120 | "favicon.ico", | |
| 121 | "favicon.svg", | |
| 122 | ]); | |
| 123 | ||
| 124 | /** A name as it may appear in an address: no slashes, dots only inside. */ | |
| 125 | const NAME = /^[A-Za-z0-9][A-Za-z0-9._-]{0,99}$/; | |
| 126 | ||
| 127 | /** The path's segments, decoded; null if it is not a path on the site. */ | |
| 128 | export function segments(path: string): string[] | null { | |
| 129 | if (!path.startsWith("/") || path.startsWith("//")) return null; | |
| 130 | const bare = path.split(/[?#]/, 1)[0]; | |
| 131 | try { | |
| 132 | return bare | |
| 133 | .split("/") | |
| 134 | .filter((part) => part !== "") | |
| 135 | .map((part) => decodeURIComponent(part)); | |
| 136 | } catch { | |
| 137 | return null; | |
| 138 | } | |
| 139 | } | |
| 140 | ||
| 141 | /** The card for a page of g1t.sh, as an anonymous visitor would see it. */ | |
| 142 | export async function resolve(path: string, sources: Sources): Promise<Card> { | |
| 143 | const parts = segments(path); | |
| 144 | if (!parts) return BRAND; | |
| 145 | try { | |
| 146 | return (await lookUp(parts, sources)) ?? BRAND; | |
| 147 | } catch { | |
| 148 | // A service that is down must not break a link preview. | |
| 149 | return { kind: "brand", failed: true }; | |
| 150 | } | |
| 151 | } | |
| 152 | ||
| 153 | async function lookUp(parts: string[], { identity, repos, work, projects }: Sources): Promise<Card | null> { | |
| 154 | const [owner, repo, section, item] = parts; | |
| 155 | if (owner === undefined) return PAGES[""]; | |
| 156 | if (RESERVED.has(owner.toLowerCase())) return parts.length === 1 ? (PAGES[owner.toLowerCase()] ?? null) : null; | |
| 157 | if (!NAME.test(owner)) return null; | |
| 158 | ||
| 159 | // A workspace, or one of its own pages under `-`. | |
| 160 | if (repo === undefined || repo === "-") { | |
| 161 | const workspace = await identity.getWorkspace(owner.toLowerCase()); | |
| 162 | if (!workspace) return null; | |
| 163 | const listed = await projects.list(workspace.slug, null).catch(() => null); | |
| 164 | return { | |
| 165 | kind: "workspace", | |
| 166 | slug: workspace.slug, | |
| 167 | name: workspace.name || workspace.slug, | |
| 168 | description: workspace.description, | |
| 169 | projects: listed?.ok ? listed.value.filter((p) => !p.private).length : 0, | |
| 170 | }; | |
| 171 | } | |
| 172 | ||
| 173 | // A project, through its repository: nothing is shown unless the | |
| 174 | // repository is public. | |
| 175 | if (!NAME.test(repo)) return null; | |
| 176 | const path = { namespace: owner, name: repo }; | |
| 177 | const found = await repos.get(path, null); | |
| 178 | if (!found.ok || found.value.isPrivate) return null; | |
| 179 | const { namespace, name } = found.value; | |
| 180 | const canonical = { namespace, name }; | |
| 181 | ||
| 182 | if (section === "issues" && item !== undefined && isNumber(item) && parts.length === 4) { | |
| 183 | const issue = await work.getIssue(canonical, Number(item), null); | |
| 184 | if (issue.ok) { | |
| 185 | return { | |
| 186 | kind: "issue", | |
| 187 | owner: namespace, | |
| 188 | repo: name, | |
| 189 | number: issue.value.issue.number, | |
| 190 | title: issue.value.issue.title, | |
| 191 | state: issueState(issue.value.issue), | |
| 192 | author: issue.value.issue.author.username, | |
| 193 | }; | |
| 194 | } | |
| 195 | } | |
| 196 | ||
| 197 | if (section === "pull" && item !== undefined && isNumber(item)) { | |
| 198 | const pull = await work.getPull(canonical, Number(item), null); | |
| 199 | if (pull.ok) { | |
| 200 | return { | |
| 201 | kind: "pull", | |
| 202 | owner: namespace, | |
| 203 | repo: name, | |
| 204 | number: pull.value.pull.number, | |
| 205 | title: pull.value.pull.title, | |
| 206 | state: pull.value.pull.status, | |
| 207 | author: pull.value.pull.author.username, | |
| 208 | }; | |
| 209 | } | |
| 210 | } | |
| 211 | ||
| 212 | if (section === "soon" && item !== undefined && parts.length === 4) { | |
| 213 | const feature = roadmapItem(item); | |
| 214 | if (feature) { | |
| 215 | return { | |
| 216 | kind: "soon", | |
| 217 | owner: namespace, | |
| 218 | repo: name, | |
| 219 | title: feature.title, | |
| 220 | summary: feature.summary, | |
| 221 | section: feature.section, | |
| 222 | }; | |
| 223 | } | |
| 224 | } | |
| 225 | ||
| 226 | const [project, counts] = await Promise.all([ | |
| 227 | projects.get(namespace, name.toLowerCase(), null).catch(() => null), | |
| 228 | work.counts(canonical, null).catch(() => null), | |
| 229 | ]); | |
| 230 | const shown: Project | null = project?.ok && !project.value.private ? project.value : null; | |
| 231 | return { | |
| 232 | kind: "project", | |
| 233 | owner: namespace, | |
| 234 | repo: name, | |
| 235 | name: shown?.name ?? name, | |
| 236 | description: shown?.description ?? found.value.description, | |
| 237 | issues: counts?.ok ? counts.value.issues : 0, | |
| 238 | pulls: counts?.ok ? counts.value.pulls : 0, | |
| 239 | }; | |
| 240 | } | |
| 241 | ||
| 242 | function isNumber(value: string): boolean { | |
| 243 | return /^[1-9][0-9]{0,8}$/.test(value); | |
| 244 | } | |
| 245 | ||
| 246 | function issueState(issue: Issue): IssueState { | |
| 247 | if (issue.state === "open") return "open"; | |
| 248 | return issue.reason === "not_planned" ? "not_planned" : "completed"; | |
| 249 | } | |
| 250 | ||
| 251 | /** The card for a page of the docs, from what the page says about itself. */ | |
| 252 | export function docsCard(query: URLSearchParams): Card { | |
| 253 | const title = clean(query.get("title"), 160); | |
| 254 | if (!title) return { kind: "docs", title: "g1t docs", section: null, description: clean(query.get("description"), 300) }; | |
| 255 | return { | |
| 256 | kind: "docs", | |
| 257 | title, | |
| 258 | section: clean(query.get("section"), 60), | |
| 259 | description: clean(query.get("description"), 300), | |
| 260 | }; | |
| 261 | } | |
| 262 | ||
| 263 | /** Text from a query string: trimmed, single-spaced and bounded. */ | |
| 264 | export function clean(value: string | null, max: number): string | null { | |
| 265 | const text = (value ?? "").replace(/\s+/g, " ").trim(); | |
| 266 | if (!text) return null; | |
| 267 | return text.length > max ? `${text.slice(0, max - 1).trimEnd()}…` : text; | |
| 268 | } |