import { readFileSync, writeFileSync, mkdirSync, existsSync } from 'node:fs';

import { homedir } from 'node:os';

import { join } from 'node:path';

const DIR = join(homedir(), '.acomplete');

const FILE = join(DIR, 'config.json');

const DEFAULTS = {

mode: 'auto', // auto | free | byo

provider: 'anthropic', // anthropic | deepseek | openai | gemini (used when mode=byo)

apiKey: '',

model: '', // empty -> per-provider fast default

proxyUrl: '', // free-tier proxy (step 2)

debounceMs: 400

};

export function load() {

if (!existsSync(FILE)) return { ...DEFAULTS };

try {

return { ...DEFAULTS, ...JSON.parse(readFileSync(FILE, 'utf8')) };

} catch {

return { ...DEFAULTS };

}

}

export function save(cfg) {

mkdirSync(DIR, { recursive: true });

writeFileSync(FILE, JSON.stringify(cfg, null, 2));

return FILE;

}

// `acomplete config key=value ...` — minimal editor, YAGNI on a TUI.

export function configCli(args) {

const cfg = load();

if (args.length === 0) {

const shown = { ...cfg, apiKey: cfg.apiKey ? '***set***' : '' };

console.log(JSON.stringify(shown, null, 2));

console.log(`\nedit: acomplete config mode=byo provider=deepseek apiKey=sk-... model=deepseek-chat`);

return;

}

for (const a of args) {

const i = a.indexOf('=');

if (i < 0) continue;

const k = a.slice(0, i), v = a.slice(i + 1);

if (k in DEFAULTS) cfg[k] = k === 'debounceMs' ? Number(v) : v;

}

const path = save(cfg);

console.log(`saved ${path}`);

}