theme redux

src/utils/theme-loader.ts

@@ -0,0 +1,49 @@
+import path from "path"
+import type { ThemeJson } from "../types/theme-schema"
+import { THEME_JSON } from "../constants/themes"
+
+export async function loadTheme(name: string) {
+  if (THEME_JSON[name]) return THEME_JSON[name]
+  const file = path.resolve(process.cwd(), "themes", `${name}.json`)
+  return loadThemeFromPath(file)
+}
+
+export async function loadThemeFromPath(file: string) {
+  const json = (await Bun.file(file).json()) as ThemeJson
+  validateTheme(json, file)
+  return json
+}
+
+export async function getAllThemes() {
+  return { ...THEME_JSON, ...(await getCustomThemes()) }
+}
+
+export async function getCustomThemes() {
+  const dirs = [
+    path.join(process.env.HOME ?? "", ".config/podtui/themes"),
+    path.resolve(process.cwd(), ".podtui/themes"),
+    path.resolve(process.cwd(), "themes"),
+  ]
+
+  const result: Record<string, ThemeJson> = {}
+  for (const dir of dirs) {
+    const glob = new Bun.Glob("*.json")
+    for await (const item of glob.scan({ absolute: true, followSymlinks: true, cwd: dir })) {
+      const name = path.basename(item, ".json")
+      const json = (await Bun.file(item).json()) as ThemeJson
+      validateTheme(json, item)
+      result[name] = json
+    }
+  }
+  return result
+}
+
+export function validateTheme(theme: ThemeJson, source?: string) {
+  if (!theme || typeof theme !== "object") {
+    throw new Error(`Invalid theme${source ? ` (${source})` : ""}`)
+  }
+  if (!theme.theme || typeof theme.theme !== "object") {
+    throw new Error(`Theme missing 'theme' object${source ? ` (${source})` : ""}`)
+  }
+  return true
+}