club-launcher/electron/settings.ts

import { app } from 'electron'
import { existsSync, readFileSync, writeFileSync } from 'fs'
import { join } from 'path'

export interface AppSettings {
  steamPath: string | null
  gameFolders: string[]
}

const DEFAULTS: AppSettings = {
  steamPath: null,
  gameFolders: [],
}

function settingsPath(): string {
  return join(app.getPath('userData'), 'settings.json')
}

export function readSettings(): AppSettings {
  const path = settingsPath()
  if (!existsSync(path)) return { ...DEFAULTS }
  try {
    const raw = JSON.parse(readFileSync(path, 'utf-8'))
    return {
      steamPath:   typeof raw.steamPath === 'string' ? raw.steamPath : null,
      gameFolders: Array.isArray(raw.gameFolders) ? raw.gameFolders.filter((f: unknown) => typeof f === 'string') : [],
    }
  } catch {
    return { ...DEFAULTS }
  }
}

export function writeSettings(settings: AppSettings): void {
  writeFileSync(settingsPath(), JSON.stringify(settings, null, 2), 'utf-8')
}

export function updateSettings(patch: Partial<AppSettings>): AppSettings {
  const current = readSettings()
  const updated = { ...current, ...patch }
  writeSettings(updated)
  return updated
}