feat: resolve ~ in config paths before passing to engine (#34)

src/main/download-engine/args-builder.ts

@@ -1,5 +1,6 @@
 import path from 'node:path'
 import type { AppSettings, DownloadOptions } from '../../shared/types'
+import { resolvePathWithHome } from '../utils/path-helpers'
 
 export const sanitizeFilenameTemplate = (template: string): string => {
   const trimmed = template.trim()
@@ -115,8 +116,9 @@ export const buildDownloadArgs = (
     args.push('--proxy', settings.proxy)
   }
 
-  if (settings.configPath) {
-    args.push('--config-location', settings.configPath)
+  const configPath = resolvePathWithHome(settings.configPath)
+  if (configPath) {
+    args.push('--config-location', configPath)
   }
 
   args.push(options.url)

src/main/lib/download-engine.ts

@@ -20,6 +20,7 @@ import {
 } from '../download-engine/format-utils'
 import { settingsManager } from '../settings'
 import { scopedLoggers } from '../utils/logger'
+import { resolvePathWithHome } from '../utils/path-helpers'
 import { DownloadQueue } from './download-queue'
 import { ffmpegManager } from './ffmpeg-manager'
 import { historyManager } from './history-manager'
@@ -74,8 +75,9 @@ class DownloadEngine extends EventEmitter {
     }
 
     // Add config file if configured
-    if (settings.configPath) {
-      args.push('--config-location', `"${settings.configPath}"`)
+    const configPath = resolvePathWithHome(settings.configPath)
+    if (configPath) {
+      args.push('--config-location', configPath)
     }
 
     args.push(url)
@@ -169,8 +171,9 @@ class DownloadEngine extends EventEmitter {
     }
 
     // Add config file if configured
-    if (settings.configPath) {
-      args.push('--config-location', `"${settings.configPath}"`)
+    const configPath = resolvePathWithHome(settings.configPath)
+    if (configPath) {
+      args.push('--config-location', configPath)
     }
 
     args.push(url)

src/main/utils/path-helpers.ts

@@ -0,0 +1,19 @@
+import os from 'node:os'
+import path from 'node:path'
+
+export const resolvePathWithHome = (rawPath?: string | null): string | undefined => {
+  const trimmed = rawPath?.trim()
+  if (!trimmed) {
+    return undefined
+  }
+
+  if (trimmed === '~') {
+    return os.homedir()
+  }
+
+  if (trimmed.startsWith('~/') || trimmed.startsWith('~\\')) {
+    return path.join(os.homedir(), trimmed.slice(2))
+  }
+
+  return trimmed
+}