Add --tag option to download command

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- Added `--tag` option to `download` command for filtering packages by tags
+- Enhanced tag filtering to support all metadata fields shown as tags in UI (format, architecture, distribution, component, etc.)
+- Added download command documentation to README with comprehensive usage examples
+
 ## [1.10.1] - 2025-12-16
 
 ### Fixed

README.md

@@ -32,6 +32,7 @@ The CLI currently supports the following commands (and sub-commands):
 - `delete`|`rm`:          Delete a package from a repository.
 - `dependencies`|`deps`:  List direct (non-transitive) dependencies for a package.
 - `docs`:                 Launch the help website in your browser.
+- `download`:  Download a package from a repository.
 - `entitlements`|`ents`:  Manage the entitlements for a repository.
   - `create`|`new`:         Create a new entitlement in a repository.
   - `delete`|`rm`:          Delete an entitlement from a repository.
@@ -249,6 +250,45 @@ cloudsmith push rpm --help
 ```
 
 
+## Downloading Packages
+
+You can download packages from repositories using the `cloudsmith download` command. The CLI supports various filtering options to help you find and download the exact package you need.
+
+For example, to download a specific package:
+
+```
+cloudsmith download your-account/your-repo package-name
+```
+
+You can filter by various attributes like version, format, architecture, operating system, and tags:
+
+```
+# Download a specific version
+cloudsmith download your-account/your-repo package-name --version 1.2.3
+
+# Filter by format and architecture
+cloudsmith download your-account/your-repo package-name --format deb --arch amd64
+
+# Filter by tag (e.g., latest, stable, beta)
+cloudsmith download your-account/your-repo package-name --tag latest
+
+# Combine multiple filters
+cloudsmith download your-account/your-repo package-name --tag stable --format deb --arch arm64
+
+# Download all associated files (POM, sources, javadoc, etc.)
+cloudsmith download your-account/your-repo package-name --all-files
+
+# Preview what would be downloaded without actually downloading
+cloudsmith download your-account/your-repo package-name --dry-run
+```
+
+For more advanced usage and all available options:
+
+```
+cloudsmith download --help
+```
+
+
 ## Contributing
 
 Yes! Please do contribute, this is why we love open source.  Please see [CONTRIBUTING](https://github.com/cloudsmith-io/cloudsmith-cli/blob/master/CONTRIBUTING.md) for contribution guidelines when making code changes or raising issues for bug reports, ideas, discussions and/or questions (i.e. help required).

cloudsmith_cli/cli/commands/download.py

@@ -42,6 +42,9 @@
 @click.option(
     "--arch", "arch_filter", help="Architecture filter (e.g., 'amd64', 'arm64')."
 )
+@click.option(
+    "--tag", "tag_filter", help="Tag filter (e.g., 'latest', 'stable', 'beta')."
+)
 @click.option(
     "--outfile",
     type=click.Path(),
@@ -78,6 +81,7 @@ def download(  # noqa: C901
     format_filter,
     os_filter,
     arch_filter,
+    tag_filter,
     outfile,
     overwrite,
     all_files,
@@ -88,7 +92,7 @@ def download(  # noqa: C901
     Download a package from a Cloudsmith repository.
 
     This command downloads a package binary from a Cloudsmith repository. You can
-    filter packages by version, format, operating system, and architecture.
+    filter packages by version, format, operating system, architecture, and tags.
 
     Examples:
 
@@ -104,6 +108,10 @@ def download(  # noqa: C901
     # Download with filters and custom output name
     cloudsmith download myorg/myrepo mypackage --format deb --arch amd64 --outfile my-package.deb
 
+    \b
+    # Download a package with a specific tag
+    cloudsmith download myorg/myrepo mypackage --tag latest
+
     \b
     # Download all associated files (POM, sources, javadoc, etc.) for a Maven/NuGet package
     cloudsmith download myorg/myrepo mypackage --all-files
@@ -150,6 +158,7 @@ def download(  # noqa: C901
                 format_filter=format_filter,
                 os_filter=os_filter,
                 arch_filter=arch_filter,
+                tag_filter=tag_filter,
                 yes=yes,
             )
 

cloudsmith_cli/core/download.py

@@ -53,6 +53,50 @@ def resolve_auth(
     return session, headers, auth_source
 
 
+def _matches_tag_filter(pkg: Dict, tag_filter: str) -> bool:
+    """
+    Check if a package matches the tag filter.
+
+    Args:
+        pkg: Package dictionary
+        tag_filter: Tag to match against
+
+    Returns:
+        True if package matches the tag filter
+    """
+    # Check actual tags field (info, version, etc.)
+    pkg_tags = pkg.get("tags", {})
+    for tag_category in pkg_tags.values():
+        if isinstance(tag_category, list) and tag_filter in tag_category:
+            return True
+
+    # Check other metadata fields that appear as tags in the UI (case-sensitive)
+    # Check format, architectures, and deb component
+    if (
+        pkg.get("format") == tag_filter
+        or any(arch.get("name") == tag_filter for arch in pkg.get("architectures", []))
+        or pkg.get("identifiers", {}).get("deb_component") == tag_filter
+    ):
+        return True
+
+    # Check distro-related fields
+    distro_name_raw = pkg.get("distro", {}).get("name")
+    distro_version_raw = pkg.get("distro_version", {}).get("name")
+    distro_combo = ""
+    if distro_name_raw and distro_version_raw:
+        # Only build combined tag when both parts are present
+        distro_combo = f"{distro_name_raw}/{distro_version_raw}"
+
+    if (
+        tag_filter == distro_name_raw
+        or tag_filter == distro_version_raw
+        or (distro_combo and tag_filter == distro_combo)
+    ):
+        return True
+
+    return False
+
+
 def resolve_package(
     owner: str,
     repo: str,
@@ -62,6 +106,7 @@ def resolve_package(
     format_filter: Optional[str] = None,
     os_filter: Optional[str] = None,
     arch_filter: Optional[str] = None,
+    tag_filter: Optional[str] = None,
     yes: bool = False,
 ) -> Dict:
     """
@@ -75,6 +120,7 @@ def resolve_package(
         format_filter: Optional format filter
         os_filter: Optional OS filter
         arch_filter: Optional architecture filter
+        tag_filter: Optional tag filter
         yes: If True, automatically select best match when multiple found
 
     Returns:
@@ -125,6 +171,9 @@ def resolve_package(
         # Apply architecture filter
         if arch_filter and pkg.get("architecture") != arch_filter:
             continue
+        # Apply tag filter
+        if tag_filter and not _matches_tag_filter(pkg, tag_filter):
+            continue
         filtered_packages.append(pkg)
     packages = filtered_packages
 

cloudsmith_cli/core/tests/test_download.py

@@ -151,6 +151,136 @@ def test_resolve_package_with_filters(self, mock_list_packages):
             page_size=100,
         )
 
+    @patch("cloudsmith_cli.core.download.list_packages")
+    def test_resolve_package_with_tag_filter(self, mock_list_packages):
+        """Test package resolution with tag filter."""
+        mock_packages = [
+            {
+                "name": "test-package",
+                "version": "1.0.0",
+                "format": "deb",
+                "architectures": [{"name": "amd64"}],
+                "distro": {"name": "Ubuntu"},
+                "distro_version": {"name": "noble"},
+                "identifiers": {"deb_component": "main"},
+                "tags": {"info": ["latest"], "version": ["stable"]},
+            },
+            {
+                "name": "test-package",
+                "version": "0.9.0",
+                "format": "rpm",
+                "architectures": [{"name": "arm64"}],
+                "distro": {"name": "CentOS"},
+                "distro_version": {"name": "8"},
+                "identifiers": {"deb_component": "contrib"},
+                "tags": {"info": ["beta"], "version": ["unstable"]},
+            },
+        ]
+        mock_page_info = Mock()
+        mock_page_info.is_valid = True
+        mock_page_info.page = 1
+        mock_page_info.page_total = 1
+        mock_list_packages.return_value = (mock_packages, mock_page_info)
+
+        # Test actual tag filtering - should return v1.0.0 (has "latest" tag)
+        result = download.resolve_package(
+            "owner", "repo", "test-package", tag_filter="latest"
+        )
+        self.assertEqual(
+            result["version"], "1.0.0"
+        )  # Only this package has "latest" tag
+
+        # Test format filtering as tag - should return v1.0.0 (format "deb")
+        result = download.resolve_package(
+            "owner", "repo", "test-package", tag_filter="deb"
+        )
+        self.assertEqual(
+            result["version"], "1.0.0"
+        )  # Only this package has format "deb"
+
+        # Test architecture filtering as tag - should return v0.9.0 (has "arm64")
+        result = download.resolve_package(
+            "owner", "repo", "test-package", tag_filter="arm64"
+        )
+        self.assertEqual(
+            result["version"], "0.9.0"
+        )  # Only this package has arm64 architecture
+
+        # Test distro filtering as tag - should fail due to case mismatch
+        with self.assertRaises(click.ClickException):
+            download.resolve_package(
+                "owner",
+                "repo",
+                "test-package",
+                tag_filter="ubuntu",  # lowercase won't match "Ubuntu"
+            )
+
+    def test_matches_tag_filter_edge_cases(self):
+        """Test _matches_tag_filter function with edge cases."""
+
+        # Test package without tags field
+        pkg_no_tags = {"name": "test", "format": "deb"}
+        self.assertFalse(download._matches_tag_filter(pkg_no_tags, "latest"))
+        self.assertTrue(
+            download._matches_tag_filter(pkg_no_tags, "deb")
+        )  # format match
+
+        # Test package with empty tags
+        pkg_empty_tags = {"tags": {}, "format": "rpm"}
+        self.assertFalse(download._matches_tag_filter(pkg_empty_tags, "latest"))
+        self.assertTrue(download._matches_tag_filter(pkg_empty_tags, "rpm"))
+
+        # Test package with None/empty distro fields
+        pkg_no_distro = {"tags": {"info": ["test"]}}
+        self.assertFalse(download._matches_tag_filter(pkg_no_distro, "ubuntu"))
+        self.assertTrue(download._matches_tag_filter(pkg_no_distro, "test"))
+
+        # Test case-sensitive matching for actual tags
+        pkg_case_tags = {"tags": {"info": ["Latest", "Beta"]}}
+        self.assertTrue(download._matches_tag_filter(pkg_case_tags, "Latest"))
+        self.assertFalse(
+            download._matches_tag_filter(pkg_case_tags, "latest")
+        )  # case mismatch
+
+        # Test case-sensitive matching for metadata fields
+        pkg_case_meta = {"format": "Deb", "architectures": [{"name": "ARM64"}]}
+        self.assertTrue(download._matches_tag_filter(pkg_case_meta, "Deb"))
+        self.assertFalse(
+            download._matches_tag_filter(pkg_case_meta, "deb")
+        )  # case mismatch
+        self.assertTrue(download._matches_tag_filter(pkg_case_meta, "ARM64"))
+        self.assertFalse(
+            download._matches_tag_filter(pkg_case_meta, "arm64")
+        )  # case mismatch
+
+        # Test component filtering
+        pkg_component = {"identifiers": {"deb_component": "main"}}
+        self.assertTrue(download._matches_tag_filter(pkg_component, "main"))
+        self.assertFalse(download._matches_tag_filter(pkg_component, "contrib"))
+
+        # Test combined distro/version matching
+        pkg_distro_combo = {
+            "distro": {"name": "Ubuntu"},
+            "distro_version": {"name": "noble"},
+        }
+        self.assertTrue(download._matches_tag_filter(pkg_distro_combo, "Ubuntu"))
+        self.assertTrue(download._matches_tag_filter(pkg_distro_combo, "noble"))
+        self.assertTrue(download._matches_tag_filter(pkg_distro_combo, "Ubuntu/noble"))
+        self.assertFalse(
+            download._matches_tag_filter(pkg_distro_combo, "ubuntu/noble")
+        )  # case mismatch
+
+        # Test distro combo with missing fields (should not create "/")
+        pkg_partial_distro = {"distro": {"name": "Ubuntu"}}  # missing distro_version
+        self.assertTrue(download._matches_tag_filter(pkg_partial_distro, "Ubuntu"))
+        self.assertFalse(
+            download._matches_tag_filter(pkg_partial_distro, "Ubuntu/")
+        )  # should not match partial combo
+
+        # Test empty architecture list
+        pkg_empty_arch = {"architectures": []}
+        self.assertFalse(download._matches_tag_filter(pkg_empty_arch, "amd64"))
+
     @patch("cloudsmith_cli.core.download.list_packages")
     def test_resolve_package_exact_name_match(self, mock_list_packages):
         """Test that only exact name matches are returned (not partial)."""