init helder

src/main/config.ts

@@ -0,0 +1,93 @@
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { join } from 'node:path'
+
+/**
+ * Project-scoped settings, living in `.helder/` in the opened project's root.
+ *  - config.default.json  full built-in defaults, REGENERATED on every launch
+ *                         (live documentation; the app never reads user edits here)
+ *  - config.json          sparse — only user-overridden values
+ *  - theme.css            custom CSS over the built-in dark theme; the CODE FONT
+ *                         and FONT SIZE live here (as CSS vars), not in the JSON
+ * Effective value = config.json over config.default.json, merged key by key.
+ */
+export interface HelderConfig {
+  ai: { command: string; autoLaunch: boolean }
+  editor: { autoSave: boolean; tabSize: number }
+  git: { confirmDiscard: boolean }
+  terminal: { shell: string | null }
+}
+
+export const DEFAULTS: HelderConfig = {
+  ai: { command: 'claude', autoLaunch: true },
+  editor: { autoSave: false, tabSize: 4 },
+  git: { confirmDiscard: true },
+  terminal: { shell: null },
+}
+
+const THEME_TEMPLATE = `/* Helder theme — custom CSS applied OVER the built-in dark theme.
+ * This file is created once and never overwritten; edit it freely.
+ * The code font and font size live here (not in config.json). Uncomment and
+ * tweak any variable below; you can also override any --token from the built-in
+ * theme (see the design tokens in the app's styles). */
+:root {
+  /* Code surfaces (editor + terminals) */
+  /* --code-font: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; */
+  /* --code-size: 13px;   */ /* editor font size */
+  /* --term-size: 12.5px; */ /* terminal font size */
+
+  /* Example accent override: */
+  /* --accent: #4d8dff; */
+}
+`
+
+let current: HelderConfig = DEFAULTS
+let themeCss = ''
+
+function isPlainObject(v: unknown): v is Record<string, unknown> {
+  return !!v && typeof v === 'object' && !Array.isArray(v)
+}
+
+function deepMerge<T>(base: T, over: unknown): T {
+  if (!isPlainObject(base) || !isPlainObject(over)) return base
+  const out: Record<string, unknown> = { ...base }
+  for (const key of Object.keys(over)) {
+    const b = (base as Record<string, unknown>)[key]
+    const o = over[key]
+    if (isPlainObject(b) && isPlainObject(o)) out[key] = deepMerge(b, o)
+    else if (o !== undefined) out[key] = o
+  }
+  return out as T
+}
+
+/** (Re)resolve config + theme for a project root, regenerating the defaults file. */
+export async function resolveConfig(root: string): Promise<void> {
+  const dir = join(root, '.helder')
+  try {
+    await mkdir(dir, { recursive: true })
+    // Always regenerate the defaults file — it documents every setting.
+    await writeFile(join(dir, 'config.default.json'), JSON.stringify(DEFAULTS, null, 2) + '\n')
+
+    let override: unknown = {}
+    try { override = JSON.parse(await readFile(join(dir, 'config.json'), 'utf8')) } catch { /* none / invalid */ }
+    current = deepMerge(DEFAULTS, override)
+
+    try {
+      themeCss = await readFile(join(dir, 'theme.css'), 'utf8')
+    } catch {
+      themeCss = THEME_TEMPLATE
+      await writeFile(join(dir, 'theme.css'), THEME_TEMPLATE)
+    }
+  } catch {
+    // Read-only / inaccessible root: fall back to built-in defaults.
+    current = DEFAULTS
+    themeCss = ''
+  }
+}
+
+export function getConfig(): HelderConfig {
+  return current
+}
+
+export function getThemeCss(): string {
+  return themeCss
+}