DietrichGebert
46c5c28b35
Thin OpenCode plugin injecting the ponytail ruleset via experimental.chat.system.transform, reusing the shared instruction builder. Verified end-to-end on OpenCode 1.17.4. Supersedes #15.
66 lines
2.4 KiB
JavaScript
66 lines
2.4 KiB
JavaScript
// ponytail — OpenCode plugin.
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//
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// Injects the ponytail ruleset into every chat's system prompt at the active
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// intensity, and persists /ponytail mode switches. Reuses the shared instruction
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// builder so Claude Code, Codex, pi, and OpenCode all read one source of truth.
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//
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// OpenCode loads this as a server plugin — add it to your opencode.json:
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// { "plugin": ["./.opencode/plugins/ponytail.mjs"] }
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import { createRequire } from 'module';
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import fs from 'fs';
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import os from 'os';
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import path from 'path';
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// The shared instruction builder is CommonJS; bridge to it from this ES module.
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const require = createRequire(import.meta.url);
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const { getPonytailInstructions } = require('../../hooks/ponytail-instructions');
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const { getDefaultMode, normalizePersistedMode } = require('../../hooks/ponytail-config');
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// OpenCode has no flag-file convention of its own; keep mode beside its config.
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const statePath = path.join(
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process.env.XDG_CONFIG_HOME || path.join(os.homedir(), '.config'),
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'opencode',
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'.ponytail-active',
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);
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function readMode() {
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try {
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return normalizePersistedMode(fs.readFileSync(statePath, 'utf8').trim()) || getDefaultMode();
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} catch (e) {
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return getDefaultMode();
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}
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}
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function writeMode(mode) {
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fs.mkdirSync(path.dirname(statePath), { recursive: true });
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fs.writeFileSync(statePath, mode);
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}
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export default async ({ client } = {}) => {
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const log = (level, message) => {
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try { client && client.app && client.app.log({ body: { service: 'ponytail', level, message } }); } catch (e) {}
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};
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return {
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// Append the ruleset to the system prompt every turn.
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'experimental.chat.system.transform': async (_input, output) => {
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const mode = readMode();
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if (mode === 'off') return;
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output.system.push(getPonytailInstructions(mode));
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},
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// Persist `/ponytail <level>` so the next turn's injection follows it.
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// ponytail: mode applies from the next message, not the current one — the
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// transform reads the flag the command writes. Good enough; switch to a
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// synchronous store if same-turn switching ever matters.
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'command.execute.before': async (input) => {
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if (!input || input.command !== 'ponytail') return;
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// `off` is persisted like any mode; the transform reads it and stays silent.
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const mode = normalizePersistedMode((input.arguments || '').trim()) || getDefaultMode();
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writeMode(mode);
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log('info', 'ponytail ' + mode);
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},
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};
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};
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