qsm-uix

1// qsm-uix's function-hooks module.
2import type { On } from "claude-code";
3import { registerNoun } from "./noun.generated.ts";
4
5export function register(on: On): void {
6  registerNoun(on);
7}
8

1// Generated by lib/generate-noun.ts from qsm.json. Do not hand-edit; run
2// `bun lib/generate-noun.ts plugins/<name>` again after changing qsm.json.
3import type { Caught, EngineInterface, On } from "claude-code";
4import type { Uix } from "../types/index.d.ts";
5
6/** How one option becomes argv: a positional value (`flag` null), a bare
7 * boolean flag, or a flag and its value; a list repeats it per element. */
8export interface VerbArg {
9  readonly name: string;
10  readonly flag: string | null;
11  readonly boolean?: true;
12}
13
14export interface VerbRow {
15  readonly words: readonly string[];
16  readonly args: readonly VerbArg[];
17  readonly passthrough?: true;
18}
19
20export const verbs: Readonly<Record<string, VerbRow>> = {
21  screenshot: { words: ["qsm-uix","screenshot"], args: [{ name: "output", flag: "--output" }, { name: "out", flag: "--out" }] },
22  crop: { words: ["qsm-uix","crop"], args: [{ name: "input", flag: null }, { name: "rect", flag: "--rect" }, { name: "zoom", flag: "--zoom" }, { name: "out", flag: "--out" }] },
23  diff: { words: ["qsm-uix","diff"], args: [{ name: "a", flag: null }, { name: "b", flag: null }, { name: "out", flag: "--out" }] },
24  burst: { words: ["qsm-uix","burst"], args: [{ name: "count", flag: "--count" }, { name: "interval", flag: "--interval" }, { name: "outDir", flag: "--out-dir" }, { name: "output", flag: "--output" }] },
25  pixelSample: { words: ["qsm-uix","pixel-sample"], args: [{ name: "image", flag: null }, { name: "at", flag: "--at" }] },
26  contrast: { words: ["qsm-uix","contrast"], args: [{ name: "image", flag: null }, { name: "fg", flag: "--fg" }, { name: "bg", flag: "--bg" }] },
27  regionStats: { words: ["qsm-uix","region-stats"], args: [{ name: "image", flag: null }, { name: "rect", flag: "--rect" }, { name: "top", flag: "--top" }] },
28  a11yTree: { words: ["qsm-uix","a11y-tree"], args: [{ name: "app", flag: null }, { name: "depth", flag: "--depth" }] },
29  doctor: { words: ["qsm-uix","doctor"], args: [] },
30};
31
32/** One verb's argv: its words, each option in declaration order, the
33 * passthrough rest after `--`, and `--json` last. */
34export function argvOf(row: VerbRow, options: Readonly<Record<string, unknown>> = {}): string[] {
35  const argv = [...row.words];
36  for (const arg of row.args) {
37    const value = options[arg.name];
38    const values = Array.isArray(value) ? value : [value];
39    for (const one of values) {
40      if (one === undefined || one === false) {
41        continue;
42      }
43      argv.push(...(arg.flag === null ? [] : [arg.flag]), ...(arg.boolean ? [] : [String(one)]));
44    }
45  }
46  const rest = options.rest;
47  if (row.passthrough && Array.isArray(rest)) {
48    argv.push("--", ...rest.map(String));
49  }
50  argv.push("--json");
51  return argv;
52}
53
54/** The binary prints one outcome envelope on stdout under --json:
55 * { code, exit, reason, message, warnings, data }. Data on ok; otherwise the
56 * code and message become the error. A stale or misbehaving binary that
57 * prints something else (not JSON, or JSON with no numeric `exit`) throws
58 * loud here instead of a raw JSON.parse SyntaxError or a silent `undefined`. */
59export function unwrap(
60  argv: readonly string[],
61  result: { readonly exitCode: number; readonly stdout: string; readonly stderr: string },
62  label = argv.slice(0, 2).join(" "),
63): unknown {
64  const text = result.stdout.trim();
65  const stderr = result.stderr.trim().slice(0, 200);
66  const cause = `(exit ${result.exitCode}): ${stderr.length > 0 ? stderr : "no stderr"}`;
67  if (text.length === 0) {
68    throw new Error(`${argv.join(" ")}: printed no envelope ${cause}`);
69  }
70  let parsed: unknown;
71  try {
72    parsed = JSON.parse(text);
73  } catch {
74    parsed = undefined;
75  }
76  if (typeof parsed !== "object" || parsed === null || typeof (parsed as { exit?: unknown }).exit !== "number") {
77    throw new Error(`${argv.join(" ")}: stdout is not an outcome envelope ${cause}: ${text.slice(0, 200)}`);
78  }
79  const envelope = parsed as { code: string; exit: number; message: string; data: unknown };
80  if (envelope.exit !== 0) {
81    throw new Error(`${label}: ${envelope.code}: ${envelope.message}`);
82  }
83  return envelope.data;
84}
85
86/** What every `.catch` does first: a toast and a log for the person. The toast says `fixedReason`
87 * when the cause may carry something the toast must not show, else the cause; the cause goes to
88 * the log and comes back for the caller's own policy. */
89export function failure(
90  $: EngineInterface,
91  event: string,
92  error: Caught["error"],
93  fixedReason?: string,
94): string {
95  const said = error.message ?? error.kind;
96  $.ui.toast(`qsm-uix ERROR: ${event}: ${(fixedReason ?? said).slice(0, 120)}`);
97  $.ui.log(`${event} failed (${error.kind}): ${said}`);
98  return said;
99}
100
101/** Adds $.uix to the engine. Call once from the plugin's own
102 * `register(on, options)` — never call the engine.create hook's own
103 * `next(e)` result from anywhere but here. */
104export function registerNoun(on: On): void {
105  on("engine.create", async (_$, e, next) => {
106    const beneath = await next(e);
107    const run = async (row: VerbRow, options?: Readonly<Record<string, unknown>>): Promise<unknown> => {
108      const argv = argvOf(row, options);
109      let result: Awaited<ReturnType<typeof beneath.process.run>>;
110      try {
111        result = await beneath.process.run(argv);
112      } catch (error) {
113        // A spawn in a deleted directory fails as ENOENT naming the binary; name the directory. A
114        // check that cannot run leaves the spawn's own error as the cause.
115        const gone = await beneath.session
116          .cwd()
117          .then(async (cwd) => ((await beneath.fs.exists(cwd)) ? null : cwd))
118          .catch(() => null);
119        if (gone !== null) {
120          throw new Error(`${row.words.join(" ")}: the session's working directory ${gone} no longer exists; cd to one that does`);
121        }
122        throw error;
123      }
124      return unwrap(argv, result, row.words.join(" "));
125    };
126    const methods = Object.entries(verbs).map(([method, row]) => [
127      method,
128      (options?: Readonly<Record<string, unknown>>) => run(row, options),
129    ]);
130    return { ...beneath, uix: Object.fromEntries(methods) as Uix };
131  });
132}
133

1// Generated by lib/generate-noun.ts from qsm.json. Do not hand-edit; run
2// `bun lib/generate-noun.ts plugins/<name>` again after changing qsm.json.
3
4export type Uix = {
5  screenshot(options: {
6    output?: string;
7    out?: string;
8  }): Promise<unknown>;
9  crop(options: {
10    input: string;
11    rect: string;
12    zoom?: number;
13    out?: string;
14  }): Promise<unknown>;
15  diff(options: {
16    a: string;
17    b: string;
18    out?: string;
19  }): Promise<unknown>;
20  burst(options: {
21    count: number;
22    interval: number;
23    outDir: string;
24    output?: string;
25  }): Promise<unknown>;
26  pixelSample(options: {
27    image: string;
28    at: string;
29  }): Promise<unknown>;
30  contrast(options: {
31    image: string;
32    fg: string;
33    bg: string;
34  }): Promise<unknown>;
35  regionStats(options: {
36    image: string;
37    rect: string;
38    top?: number;
39  }): Promise<unknown>;
40  a11yTree(options: {
41    app?: string;
42    depth?: number;
43  }): Promise<unknown>;
44  doctor(): Promise<unknown>;
45};
46
47declare module 'claude-code' {
48  interface EngineInterface {
49    uix: Uix;
50  }
51}
52