전체 설치 스크립트 GitHub 릴리스 에셋 검증 및 폴백 다운로드 방어 로직 적용

install-ocr.ps1

@@ -57,8 +57,10 @@ if ($arch -eq "AMD64") {
 $tag = $null
 try {
     Info "Fetching latest release tag from GitHub API..."
-    $response = Invoke-RestMethod -Uri $API_URL -TimeoutSec 10
-    $tag = $response.tag_name
+    $response = Invoke-RestMethod -Uri $API_URL -Headers @{ 'User-Agent' = 'install-ocr-ps1' } -TimeoutSec 10
+    if ($response -and $response.assets -and $response.assets.Count -gt 0) {
+        $tag = $response.tag_name
+    }
 } catch {
     Warn "Failed to retrieve the latest version from GitHub API. Using fallback version: $FALLBACK_VERSION"
     $tag = $FALLBACK_VERSION
@@ -69,6 +71,7 @@ if (-not $tag) {
 }
 
 $downloadUrl = "https://github.com/$REPO/releases/download/$tag/$assetName"
+$fallbackUrl = "https://github.com/$REPO/releases/download/$FALLBACK_VERSION/$assetName"
 Info "Resolved download URL: $downloadUrl"
 
 # ────────────────────────────────────────────
@@ -85,8 +88,16 @@ $destFile = Join-Path $INSTALL_DIR "ocr.exe"
 
 try {
     Info "Downloading binary..."
-    # Invoke-WebRequest를 사용해 다운로드 진행
-    Invoke-WebRequest -Uri $downloadUrl -OutFile $tempFile -UseBasicParsing
+    try {
+        Invoke-WebRequest -Uri $downloadUrl -OutFile $tempFile -UseBasicParsing
+    } catch {
+        if ($downloadUrl -ne $fallbackUrl) {
+            Warn "Primary download failed. Retrying with fallback version ($FALLBACK_VERSION): $fallbackUrl"
+            Invoke-WebRequest -Uri $fallbackUrl -OutFile $tempFile -UseBasicParsing
+        } else {
+            throw
+        }
+    }
     
     # 다운로드 완료 후 복사
     if (Test-Path $destFile) {