| 1 | /** |
| 2 | * g1t's own blocks in the page editor, beside BlockNote's: callouts, |
| 3 | * Mermaid diagrams, math, and cards for g1t things (an issue, a pull |
| 4 | * request, a channel, a project, another page); and inline mentions of |
| 5 | * people, agents and pages, and dates. The docs service reads the same |
| 6 | * names and attributes when it writes Markdown (services/docs |
| 7 | * src/markdown.ts), so keep the two in step. Browser-only: loaded with |
| 8 | * the editor. |
| 9 | */ |
| 10 | import { BlockNoteSchema, createCodeBlockSpec, defaultBlockSpecs, defaultInlineContentSpecs } from "@blocknote/core"; |
| 11 | import { createReactBlockSpec, createReactInlineContentSpec } from "@blocknote/react"; |
| 12 | import { codeBlockOptions } from "@blocknote/code-block"; |
| 13 | import { AlertTriangle, CheckCircle2, CircleDot, FileText, GitPullRequest, Hash, Info, OctagonAlert, Package } from "lucide-react"; |
| 14 | import { useEffect, useId, useState, type ReactNode } from "react"; |
| 15 | |
| 16 | /** What an embed shows, from the site (`-/docs/api?embed=`). */ |
| 17 | export type EmbedCard = { kind: "issue" | "pull" | "channel" | "project" | "page" | "link"; title: string; subtitle: string | null; state: string | null; href: string }; |
| 18 | |
| 19 | const CALLOUTS = { |
| 20 | info: { icon: <Info size={16} />, ring: "border-info/30 bg-info/8", text: "text-info" }, |
| 21 | warning: { icon: <AlertTriangle size={16} />, ring: "border-warn/30 bg-warn/8", text: "text-warn" }, |
| 22 | success: { icon: <CheckCircle2 size={16} />, ring: "border-success/30 bg-success/8", text: "text-success" }, |
| 23 | danger: { icon: <OctagonAlert size={16} />, ring: "border-danger/30 bg-danger/8", text: "text-danger" }, |
| 24 | } as const; |
| 25 | |
| 26 | export const Callout = createReactBlockSpec( |
| 27 | { |
| 28 | type: "callout", |
| 29 | propSchema: { |
| 30 | kind: { default: "info", values: ["info", "warning", "success", "danger"] }, |
| 31 | backgroundColor: { default: "default" }, |
| 32 | textColor: { default: "default" }, |
| 33 | }, |
| 34 | content: "inline", |
| 35 | }, |
| 36 | { |
| 37 | render: ({ block, editor, contentRef }) => { |
| 38 | const look = CALLOUTS[block.props.kind as keyof typeof CALLOUTS] ?? CALLOUTS.info; |
| 39 | const next = { info: "warning", warning: "success", success: "danger", danger: "info" } as const; |
| 40 | return ( |
| 41 | <div className={`my-1 flex w-full gap-2.5 rounded-lg border px-3.5 py-2.5 ${look.ring}`}> |
| 42 | <button |
| 43 | type="button" |
| 44 | contentEditable={false} |
| 45 | aria-label="Change the callout's kind" |
| 46 | disabled={!editor.isEditable} |
| 47 | onClick={() => editor.updateBlock(block, { props: { kind: next[block.props.kind as keyof typeof next] ?? "info" } })} |
| 48 | className={`mt-0.5 shrink-0 ${look.text}`} |
| 49 | > |
| 50 | {look.icon} |
| 51 | </button> |
| 52 | <div ref={contentRef} className="min-w-0 grow" /> |
| 53 | </div> |
| 54 | ); |
| 55 | }, |
| 56 | }, |
| 57 | ); |
| 58 | |
| 59 | /** A diagram drawn from its Mermaid source, live as it is typed. */ |
| 60 | function MermaidView({ code }: { code: string }) { |
| 61 | const id = useId().replace(/[^a-zA-Z0-9]/g, ""); |
| 62 | const [svg, setSvg] = useState<string | null>(null); |
| 63 | const [error, setError] = useState<string | null>(null); |
| 64 | useEffect(() => { |
| 65 | let cancelled = false; |
| 66 | const timer = setTimeout(async () => { |
| 67 | try { |
| 68 | const mermaid = (await import("mermaid")).default; |
| 69 | mermaid.initialize({ startOnLoad: false, theme: "dark", securityLevel: "strict", fontFamily: "inherit" }); |
| 70 | const { svg } = await mermaid.render(`mermaid-${id}-${Date.now()}`, code || "flowchart LR\n A --> B"); |
| 71 | if (!cancelled) { |
| 72 | setSvg(svg); |
| 73 | setError(null); |
| 74 | } |
| 75 | } catch (e) { |
| 76 | if (!cancelled) setError(e instanceof Error ? e.message.split("\n")[0]! : "This diagram has an error."); |
| 77 | } |
| 78 | }, 250); |
| 79 | return () => { |
| 80 | cancelled = true; |
| 81 | clearTimeout(timer); |
| 82 | }; |
| 83 | }, [code, id]); |
| 84 | if (error) return <p className="text-xs text-danger">{error}</p>; |
| 85 | if (!svg) return <p className="text-xs text-faint">Drawing…</p>; |
| 86 | // Mermaid sanitizes what it draws (securityLevel "strict"). |
| 87 | return <div className="flex justify-center overflow-x-auto [&_svg]:max-w-full" dangerouslySetInnerHTML={{ __html: svg }} />; |
| 88 | } |
| 89 | |
| 90 | function SourceEditor({ value, onChange, placeholder, mono = true, editable }: { value: string; onChange: (v: string) => void; placeholder: string; mono?: boolean; editable: boolean }) { |
| 91 | const [draft, setDraft] = useState(value); |
| 92 | useEffect(() => setDraft(value), [value]); |
| 93 | if (!editable) return null; |
| 94 | return ( |
| 95 | <textarea |
| 96 | value={draft} |
| 97 | placeholder={placeholder} |
| 98 | spellCheck={false} |
| 99 | rows={Math.min(14, Math.max(2, draft.split("\n").length))} |
| 100 | onChange={(e) => setDraft(e.target.value)} |
| 101 | onBlur={() => draft !== value && onChange(draft)} |
| 102 | onKeyDown={(e) => e.stopPropagation()} |
| 103 | className={`w-full resize-y rounded-md border border-line bg-bg px-2.5 py-2 text-[0.8125rem] leading-relaxed text-fg outline-none focus:border-[var(--g1t-accent)] ${mono ? "font-mono" : ""}`} |
| 104 | /> |
| 105 | ); |
| 106 | } |
| 107 | |
| 108 | export const Mermaid = createReactBlockSpec( |
| 109 | { type: "mermaid", propSchema: { code: { default: "flowchart LR\n A[Idea] --> B[Spec] --> C[Shipped]" } }, content: "none" }, |
| 110 | { |
| 111 | render: ({ block, editor }) => { |
| 112 | const [editing, setEditing] = useState(false); |
| 113 | return ( |
| 114 | <div className="my-1 w-full rounded-lg border border-line bg-surface p-3" contentEditable={false}> |
| 115 | <div className="mb-2 flex items-center justify-between text-[0.6875rem] font-medium tracking-wide text-faint uppercase"> |
| 116 | <span>Diagram</span> |
| 117 | {editor.isEditable && ( |
| 118 | <button type="button" onClick={() => setEditing(!editing)} className="rounded px-1.5 py-0.5 normal-case hover:bg-raised hover:text-fg"> |
| 119 | {editing ? "Done" : "Edit source"} |
| 120 | </button> |
| 121 | )} |
| 122 | </div> |
| 123 | {editing && <SourceEditor editable value={block.props.code} placeholder="flowchart LR A --> B" onChange={(code) => editor.updateBlock(block, { props: { code } })} />} |
| 124 | <div className={editing ? "mt-3" : ""}> |
| 125 | <MermaidView code={block.props.code} /> |
| 126 | </div> |
| 127 | </div> |
| 128 | ); |
| 129 | }, |
| 130 | }, |
| 131 | ); |
| 132 | |
| 133 | /** A formula, typeset with KaTeX. */ |
| 134 | function MathView({ expression, inline = false }: { expression: string; inline?: boolean }) { |
| 135 | const [html, setHtml] = useState<string | null>(null); |
| 136 | useEffect(() => { |
| 137 | let cancelled = false; |
| 138 | void (async () => { |
| 139 | const [{ default: katex }] = await Promise.all([import("katex"), import("katex/dist/katex.min.css")]); |
| 140 | const out = katex.renderToString(expression || "\\;", { throwOnError: false, displayMode: !inline, output: "html", trust: false, strict: "ignore" }); |
| 141 | if (!cancelled) setHtml(out); |
| 142 | })(); |
| 143 | return () => { |
| 144 | cancelled = true; |
| 145 | }; |
| 146 | }, [expression, inline]); |
| 147 | if (html === null) return <code className="text-xs text-faint">{expression}</code>; |
| 148 | // KaTeX escapes what it is given and allows no commands that run anything (trust: false). |
| 149 | return <div className="overflow-x-auto text-fg" dangerouslySetInnerHTML={{ __html: html }} />; |
| 150 | } |
| 151 | |
| 152 | export const MathBlock = createReactBlockSpec( |
| 153 | { type: "math", propSchema: { expression: { default: "e^{i\\pi} + 1 = 0" } }, content: "none" }, |
| 154 | { |
| 155 | render: ({ block, editor }) => { |
| 156 | const [editing, setEditing] = useState(false); |
| 157 | return ( |
| 158 | <div className="group/math my-1 w-full rounded-lg px-3 py-2 hover:bg-surface" contentEditable={false}> |
| 159 | {editing ? ( |
| 160 | <SourceEditor editable value={block.props.expression} placeholder="\int_0^1 x^2\,dx" onChange={(expression) => editor.updateBlock(block, { props: { expression } })} /> |
| 161 | ) : null} |
| 162 | <button type="button" className="block w-full text-left" disabled={!editor.isEditable} onClick={() => setEditing(!editing)} aria-label={editing ? "Done editing the formula" : "Edit the formula"}> |
| 163 | <MathView expression={block.props.expression} /> |
| 164 | </button> |
| 165 | </div> |
| 166 | ); |
| 167 | }, |
| 168 | }, |
| 169 | ); |
| 170 | |
| 171 | const EMBED_ICONS: Record<EmbedCard["kind"], ReactNode> = { |
| 172 | issue: <CircleDot size={16} />, |
| 173 | pull: <GitPullRequest size={16} />, |
| 174 | channel: <Hash size={16} />, |
| 175 | project: <Package size={16} />, |
| 176 | page: <FileText size={16} />, |
| 177 | link: <FileText size={16} />, |
| 178 | }; |
| 179 | |
| 180 | /** The card for a g1t address, asked of the site as the reader (so it shows only what they may see). */ |
| 181 | function EmbedView({ url, title }: { url: string; title: string }) { |
| 182 | const [card, setCard] = useState<EmbedCard | null | "missing">(null); |
| 183 | useEffect(() => { |
| 184 | let cancelled = false; |
| 185 | const workspace = window.location.pathname.split("/")[1] ?? ""; |
| 186 | fetch(`/${workspace}/-/docs/api?embed=${encodeURIComponent(url)}`, { headers: { accept: "application/json" } }) |
| 187 | .then((r) => r.json() as Promise<{ ok: boolean; value?: EmbedCard }>) |
| 188 | .then((r) => !cancelled && setCard(r.ok && r.value ? r.value : "missing")) |
| 189 | .catch(() => !cancelled && setCard("missing")); |
| 190 | return () => { |
| 191 | cancelled = true; |
| 192 | }; |
| 193 | }, [url]); |
| 194 | const shown = card && card !== "missing" ? card : null; |
| 195 | const state = shown?.state ?? null; |
| 196 | const tone = state === "open" ? "text-success" : state === "merged" ? "text-merged" : state === "closed" ? "text-danger" : "text-[var(--g1t-muted)]"; |
| 197 | return ( |
| 198 | <a |
| 199 | href={shown?.href ?? url} |
| 200 | contentEditable={false} |
| 201 | className="my-1 flex w-full items-center gap-3 rounded-lg border border-line bg-surface px-3.5 py-2.5 no-underline transition-colors hover:border-line-strong hover:bg-raised" |
| 202 | > |
| 203 | <span className={`shrink-0 ${tone}`}>{EMBED_ICONS[shown?.kind ?? "link"]}</span> |
| 204 | <span className="min-w-0 grow"> |
| 205 | <span className="block truncate text-sm font-medium text-fg">{shown?.title ?? (title || url)}</span> |
| 206 | <span className="block truncate text-xs text-faint">{card === null ? "Loading…" : card === "missing" ? "You can't see this, or it's gone." : shown?.subtitle}</span> |
| 207 | </span> |
| 208 | {state && <span className={`shrink-0 rounded-full px-2 py-0.5 text-[0.6875rem] font-medium capitalize ring-1 ring-current/30 ${tone}`}>{state}</span>} |
| 209 | </a> |
| 210 | ); |
| 211 | } |
| 212 | |
| 213 | export const Embed = createReactBlockSpec( |
| 214 | { type: "embed", propSchema: { url: { default: "" }, title: { default: "" }, kind: { default: "link" } }, content: "none" }, |
| 215 | { |
| 216 | render: ({ block, editor }) => { |
| 217 | const [draft, setDraft] = useState(""); |
| 218 | if (!block.props.url) { |
| 219 | if (!editor.isEditable) return <div contentEditable={false} />; |
| 220 | return ( |
| 221 | <form |
| 222 | contentEditable={false} |
| 223 | className="my-1 flex w-full gap-2 rounded-lg border border-dashed border-line p-2" |
| 224 | onSubmit={(e) => { |
| 225 | e.preventDefault(); |
| 226 | const url = draft.trim(); |
| 227 | if (url) editor.updateBlock(block, { props: { url } }); |
| 228 | }} |
| 229 | > |
| 230 | <input |
| 231 | autoFocus |
| 232 | value={draft} |
| 233 | onChange={(e) => setDraft(e.target.value)} |
| 234 | onKeyDown={(e) => e.stopPropagation()} |
| 235 | placeholder="Paste the address of an issue, pull request, channel, project or page" |
| 236 | className="min-w-0 grow bg-transparent px-1.5 text-sm text-fg outline-none placeholder:text-faint" |
| 237 | /> |
| 238 | <button type="submit" className="rounded-md bg-raised px-2.5 py-1 text-xs font-medium text-fg hover:bg-line"> |
| 239 | Embed |
| 240 | </button> |
| 241 | </form> |
| 242 | ); |
| 243 | } |
| 244 | return <EmbedView url={block.props.url} title={block.props.title} />; |
| 245 | }, |
| 246 | }, |
| 247 | ); |
| 248 | |
| 249 | /** A person, agent or page, inline. */ |
| 250 | export const Mention = createReactInlineContentSpec( |
| 251 | { |
| 252 | type: "mention", |
| 253 | propSchema: { kind: { default: "user" }, id: { default: "" }, name: { default: "" }, href: { default: "" } }, |
| 254 | content: "none", |
| 255 | }, |
| 256 | { |
| 257 | render: ({ inlineContent }) => { |
| 258 | const p = inlineContent.props; |
| 259 | if (p.kind === "page") { |
| 260 | return ( |
| 261 | <a href={p.href || "#"} className="rounded px-0.5 font-medium text-[var(--g1t-accent)] no-underline hover:underline"> |
| 262 | <FileText size={13} className="mr-0.5 inline -translate-y-px" aria-hidden="true" /> |
| 263 | {p.name || "Untitled"} |
| 264 | </a> |
| 265 | ); |
| 266 | } |
| 267 | return <span className={`rounded px-1 py-px font-medium ${p.kind === "agent" ? "bg-[color-mix(in_srgb,var(--g1t-accent)_15%,transparent)] text-[var(--g1t-accent)]" : "bg-info/12 text-info"}`}>@{p.name}</span>; |
| 268 | }, |
| 269 | }, |
| 270 | ); |
| 271 | |
| 272 | /** A date, inline. */ |
| 273 | export const DateChip = createReactInlineContentSpec( |
| 274 | { type: "date", propSchema: { date: { default: "" } }, content: "none" }, |
| 275 | { |
| 276 | render: ({ inlineContent }) => { |
| 277 | const at = new Date(`${inlineContent.props.date}T12:00:00`); |
| 278 | const label = Number.isNaN(at.getTime()) ? inlineContent.props.date : at.toLocaleDateString(undefined, { weekday: "short", month: "short", day: "numeric", year: "numeric" }); |
| 279 | return <span className="rounded bg-raised px-1 py-px text-[0.9em] text-fg-soft">{label}</span>; |
| 280 | }, |
| 281 | }, |
| 282 | ); |
| 283 | |
| 284 | export const schema = BlockNoteSchema.create({ |
| 285 | blockSpecs: { |
| 286 | ...defaultBlockSpecs, |
| 287 | codeBlock: createCodeBlockSpec(codeBlockOptions), |
| 288 | callout: Callout(), |
| 289 | mermaid: Mermaid(), |
| 290 | math: MathBlock(), |
| 291 | embed: Embed(), |
| 292 | }, |
| 293 | inlineContentSpecs: { ...defaultInlineContentSpecs, mention: Mention, date: DateChip }, |
| 294 | }); |
| 295 | |
| 296 | export type DocSchema = typeof schema; |
| 297 | export type DocEditorInstance = typeof schema.BlockNoteEditor; |