Enhance AniList character dictionary sync and subtitle features (#15)

src/core/services/yomitan-extension-paths.ts

@@ -0,0 +1,60 @@
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+
+export interface YomitanExtensionPathOptions {
+  explicitPath?: string;
+  cwd?: string;
+  moduleDir?: string;
+  resourcesPath?: string;
+  userDataPath?: string;
+}
+
+function pushUnique(values: string[], candidate: string | null | undefined): void {
+  if (!candidate || values.includes(candidate)) {
+    return;
+  }
+  values.push(candidate);
+}
+
+export function getYomitanExtensionSearchPaths(
+  options: YomitanExtensionPathOptions = {},
+): string[] {
+  const searchPaths: string[] = [];
+
+  pushUnique(searchPaths, options.explicitPath ? path.resolve(options.explicitPath) : null);
+  pushUnique(searchPaths, options.cwd ? path.resolve(options.cwd, 'build', 'yomitan') : null);
+  pushUnique(
+    searchPaths,
+    options.moduleDir
+      ? path.resolve(options.moduleDir, '..', '..', '..', 'build', 'yomitan')
+      : null,
+  );
+  pushUnique(
+    searchPaths,
+    options.resourcesPath ? path.join(options.resourcesPath, 'yomitan') : null,
+  );
+  pushUnique(searchPaths, '/usr/share/SubMiner/yomitan');
+  pushUnique(searchPaths, options.userDataPath ? path.join(options.userDataPath, 'yomitan') : null);
+
+  return searchPaths;
+}
+
+export function resolveExistingYomitanExtensionPath(
+  searchPaths: string[],
+  existsSync: (path: string) => boolean = fs.existsSync,
+): string | null {
+  for (const candidate of searchPaths) {
+    if (existsSync(path.join(candidate, 'manifest.json'))) {
+      return candidate;
+    }
+  }
+
+  return null;
+}
+
+export function resolveYomitanExtensionPath(
+  options: YomitanExtensionPathOptions = {},
+  existsSync: (path: string) => boolean = fs.existsSync,
+): string | null {
+  return resolveExistingYomitanExtensionPath(getYomitanExtensionSearchPaths(options), existsSync);
+}