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#!/usr/bin/env node

// ponytail — shared configuration resolver

// Resolution order for default mode:

// 1. PONYTAIL_DEFAULT_MODE environment variable

// 2. Config file defaultMode field:

// - $XDG_CONFIG_HOME/ponytail/config.json (any platform, if set)

// - ~/.config/ponytail/config.json (macOS / Linux fallback)

// - %APPDATA%\ponytail\config.json (Windows fallback)

// 3. 'full'

const fs = require('fs');

const path = require('path');

const os = require('os');

const DEFAULT_MODE = 'full';

const VALID_MODES = ['off', 'lite', 'full', 'ultra', 'review'];

const RUNTIME_MODES = ['off', 'lite', 'full', 'ultra'];

function normalizeMode(mode) {

if (typeof mode !== 'string') return null;

const normalized = mode.trim().toLowerCase();

return RUNTIME_MODES.includes(normalized) ? normalized : null;

}

function normalizeConfigMode(mode) {

if (typeof mode !== 'string') return null;

const normalized = mode.trim().toLowerCase();

return VALID_MODES.includes(normalized) ? normalized : null;

}

function normalizePersistedMode(mode) {

return normalizeMode(mode) || normalizeConfigMode(mode);

}

// "stop ponytail" / "normal mode" turn ponytail off, but only as a standalone

// command. Matching the phrase anywhere in the message turned it off mid-task

// for ordinary requests like "add a normal mode toggle" — so require the whole

// message to be the command, ignoring case and trailing punctuation.

function isDeactivationCommand(text) {

const t = String(text || '').trim().toLowerCase().replace(/[.!?\s]+$/, '');

return t === 'stop ponytail' || t === 'normal mode';

}

// ponytail: only embed the plugin install path in a statusline shell command when

// it's made of ordinary path characters. An allowlist beats escaping every shell's

// metacharacters; a hostile clone path (quotes, &, $, backtick, ;, etc.) falls back

// to manual setup instead. Allows : \ / for normal Windows and POSIX paths. Full

// per-shell escaper only if a real need appears.

function isShellSafe(p) {

return typeof p === 'string' && /^[A-Za-z0-9 _.\-:/\\~]+$/.test(p);

}

function getConfigDir() {

if (process.env.XDG_CONFIG_HOME) {

return path.join(process.env.XDG_CONFIG_HOME, 'ponytail');

}

if (process.platform === 'win32') {

return path.join(

process.env.APPDATA || path.join(os.homedir(), 'AppData', 'Roaming'),

'ponytail'

);

}

return path.join(os.homedir(), '.config', 'ponytail');

}

function getConfigPath() {

return path.join(getConfigDir(), 'config.json');

}

function getClaudeDir() {

// ponytail: CLAUDE_CONFIG_DIR overrides ~/.claude, matching Claude Code.

return process.env.CLAUDE_CONFIG_DIR || path.join(os.homedir(), '.claude');

}

function getDefaultMode() {

// 1. Environment variable (highest priority)

const envMode = process.env.PONYTAIL_DEFAULT_MODE;

// ponytail: a default must be a runtime level (off/lite/full/ultra); review is

// a session-only mode, never a valid default (#377). Validate against

// RUNTIME_MODES so a stray env var or config can't make review the default.

if (envMode && RUNTIME_MODES.includes(envMode.toLowerCase())) {

return envMode.toLowerCase();

}

// 2. Config file

try {

const configPath = getConfigPath();

// Strip UTF-8 BOM (common on Windows-saved files) so JSON.parse doesn't choke

const config = JSON.parse(fs.readFileSync(configPath, 'utf8').replace(/^\uFEFF/, ''));

if (config.defaultMode && RUNTIME_MODES.includes(config.defaultMode.toLowerCase())) {

return config.defaultMode.toLowerCase();

}

} catch (e) {

// Config file doesn't exist or is invalid — fall through

}

// 3. Default

return DEFAULT_MODE;

}

// Silence the pi "Ponytail loaded" startup toast while keeping ponytail active.

// PONYTAIL_QUIET_STARTUP=1 (or any truthy value; 0/false/empty mean "show it")

// takes precedence, else config.quietStartup === true. Mirrors getHideStatus.

function getQuietStartup() {

const env = process.env.PONYTAIL_QUIET_STARTUP;

if (env !== undefined) {

const v = env.trim().toLowerCase();

return v !== '' && v !== '0' && v !== 'false' && v !== 'no';

}

try {

const config = JSON.parse(fs.readFileSync(getConfigPath(), 'utf8').replace(/^\uFEFF/, ''));

return config.quietStartup === true;

} catch (_) {

return false;

}

// Hide the status-bar indicator while keeping ponytail active (#324).

// PONYTAIL_HIDE_STATUS=1 (or any truthy value; 0/false/empty mean "don't hide")

// takes precedence, else config.hideStatus === true.

function getHideStatus() {

const env = process.env.PONYTAIL_HIDE_STATUS;

if (env !== undefined) {

const v = env.trim().toLowerCase();

return v !== '' && v !== '0' && v !== 'false' && v !== 'no';

}

try {

const config = JSON.parse(fs.readFileSync(getConfigPath(), 'utf8').replace(/^\uFEFF/, ''));

return config.hideStatus === true;

} catch (_) {

return false;

}

function writeDefaultMode(mode) {

// ponytail: only a runtime level can be a default; review is session-only (#377).

const normalized = normalizeMode(mode);

if (!normalized) return null;

const configPath = getConfigPath();

fs.mkdirSync(path.dirname(configPath), { recursive: true });

let config = {};

try {

config = JSON.parse(fs.readFileSync(configPath, 'utf8').replace(/^\uFEFF/, ''));

if (!config || typeof config !== 'object' || Array.isArray(config)) config = {};

} catch (_) {}

config.defaultMode = normalized;

fs.writeFileSync(configPath, JSON.stringify(config, null, 2), 'utf8');

return normalized;

}

module.exports = {

DEFAULT_MODE,

VALID_MODES,

RUNTIME_MODES,

getDefaultMode,

getConfigDir,

getConfigPath,

getClaudeDir,

getHideStatus,

getQuietStartup,

isShellSafe,

normalizeMode,

normalizeConfigMode,

normalizePersistedMode,

isDeactivationCommand,

writeDefaultMode,

};

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