fbf449f9e0
Settle the cast toolchain (STYLE.md #9) and build the demo pipeline end to end. Driver: autocast, chosen by spike — its !Interactive feeds keys to the running TUI and captures the redraw, the right model for a full-screen crossterm app. asciinema-automation was rejected (assumes shell echo/\n Enter; produced a garbled cast against the TUI). - add asciinema-player; Cast.astro (player island) + Demo.astro (the WASM-swap seam, ADR-website-001 §3) - casts-src/: human-readable command-lists (casts.mjs) + generate.mjs, exposed as `pnpm casts`; expands steps to autocast YAML and records to public/casts/. Command-lists are the durable source; .cast files are regenerable (final re-record sweep due once the app is locked). - quickstart.cast (create -> add columns -> insert -> show data) embedded on the landing page above the feature cards. Verified: pnpm build clean (25 pages); player + cast bundled and served; landing HTML references the cast. Visual playback check pending (no headless browser here — verify via dev server over the tunnel).
122 lines
3.9 KiB
JavaScript
122 lines
3.9 KiB
JavaScript
#!/usr/bin/env node
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/**
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* generate.mjs — turn the cast definitions in `casts.mjs` into asciinema
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* `.cast` recordings under `public/casts/`, using autocast (ADR-website-001
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* §2; driver chosen by the 2026-06-10 spike — autocast drives the full-screen
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* TUI correctly, asciinema-automation does not).
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*
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* Usage:
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* pnpm casts # regenerate every cast
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* pnpm casts quickstart # regenerate just one
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*
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* Requires `autocast` on PATH (cargo install autocast) and a built
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* `rdbms-playground` binary at ../target/debug (run `cargo build` at the repo
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* root first). The binary's dir is added to PATH for the autocast child so the
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* recording shows a clean `$ rdbms-playground` launch line.
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*/
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import { spawnSync } from 'node:child_process';
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import { mkdirSync, writeFileSync, rmSync } from 'node:fs';
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import { dirname, resolve } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import os from 'node:os';
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import { casts } from './casts.mjs';
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const here = dirname(fileURLToPath(import.meta.url));
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const websiteRoot = resolve(here, '..');
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const repoRoot = resolve(websiteRoot, '..');
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const binDir = resolve(repoRoot, 'target', 'debug');
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const outDir = resolve(websiteRoot, 'public', 'casts');
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const cargoBin = resolve(os.homedir(), '.cargo', 'bin');
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/** YAML-escape a single character for a double-quoted scalar. */
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function charKey(ch) {
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if (ch === '\\') return '"\\\\"';
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if (ch === '"') return '"\\""';
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return `"${ch}"`;
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}
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/** Named single keys → autocast control codes. */
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const NAMED_KEYS = {
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Enter: '^M',
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Tab: '^I',
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};
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/** Build the autocast `keys:` list (one entry per line) for a cast's steps. */
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function keysFor(steps) {
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const keys = [];
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for (const step of steps) {
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if (step.wait != null) {
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keys.push(`${step.wait}ms`);
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continue;
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}
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if (step.key != null) {
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const code = NAMED_KEYS[step.key];
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if (!code) throw new Error(`unknown key: ${step.key}`);
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keys.push(code);
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if (step.after != null) keys.push(`${step.after}ms`);
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continue;
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}
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if (step.type != null) {
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for (const ch of step.type) keys.push(charKey(ch));
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if (step.enter !== false) keys.push('^M'); // Enter = CR (the TUI submits on \r)
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if (step.after != null) keys.push(`${step.after}ms`);
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continue;
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}
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throw new Error(`unrecognised step: ${JSON.stringify(step)}`);
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}
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return keys;
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}
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function yamlFor(cast) {
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const keys = keysFor(cast.steps)
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.map((k) => ` - ${k}`)
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.join('\n');
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return [
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'settings:',
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` width: ${cast.width ?? 90}`,
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` height: ${cast.height ?? 26}`,
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` title: ${JSON.stringify(cast.title ?? cast.name)}`,
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` type_speed: ${cast.typeSpeed ?? '45ms'}`,
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' timeout: 90s',
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' prompt: "$ "',
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'instructions:',
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' - !Interactive',
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' command: rdbms-playground',
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' keys:',
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keys,
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'',
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].join('\n');
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}
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const only = process.argv[2];
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const selected = only ? casts.filter((c) => c.name === only) : casts;
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if (only && selected.length === 0) {
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console.error(`no cast named "${only}". Known: ${casts.map((c) => c.name).join(', ')}`);
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process.exit(1);
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}
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mkdirSync(outDir, { recursive: true });
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const env = { ...process.env, PATH: `${binDir}:${cargoBin}:${process.env.PATH}` };
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let failures = 0;
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for (const cast of selected) {
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const yamlPath = resolve(os.tmpdir(), `autocast-${cast.name}.yaml`);
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const outPath = resolve(outDir, `${cast.name}.cast`);
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writeFileSync(yamlPath, yamlFor(cast));
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console.log(`▶ recording ${cast.name} → public/casts/${cast.name}.cast`);
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const res = spawnSync('autocast', ['--overwrite', yamlPath, outPath], {
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env,
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stdio: 'inherit',
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});
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rmSync(yamlPath, { force: true });
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if (res.status !== 0) {
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console.error(`✗ ${cast.name} failed (autocast exit ${res.status})`);
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failures += 1;
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} else {
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console.log(`✓ ${cast.name}`);
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}
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}
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if (failures) process.exit(1);
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console.log(`Done — ${selected.length} cast(s).`);
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