clan-app: Implement dynamic groups and array based filtering of logs and groups

pkgs/clan-cli/clan_lib/log_manager/__init__.py

@@ -2,13 +2,43 @@ import datetime
 import logging
 import urllib.parse
 from collections.abc import Callable  # Union for str | None
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from functools import total_ordering
 from pathlib import Path
 
 log = logging.getLogger(__name__)
 
 
+@dataclass(frozen=True)
+class LogGroupConfig:
+    """Configuration for a hierarchical log group with nickname support."""
+
+    name: str  # The name of this group level (single directory name)
+    nickname: str | None = None  # Optional display name for easier visibility
+    children: dict[str, "LogGroupConfig"] = field(
+        default_factory=dict
+    )  # Nested child groups
+
+    def get_display_name(self) -> str:
+        """Get the display name (nickname if available, otherwise the name)."""
+        return self.nickname if self.nickname else self.name
+
+    def add_child(self, child: "LogGroupConfig") -> "LogGroupConfig":
+        """Add a child group configuration and return a new LogGroupConfig instance."""
+        new_children = {**self.children, child.name: child}
+        return LogGroupConfig(
+            name=self.name, nickname=self.nickname, children=new_children
+        )
+
+    def get_child(self, name: str) -> "LogGroupConfig | None":
+        """Get a child group by name."""
+        return self.children.get(name)
+
+    def get_path_components(self) -> list[str]:
+        """Get the path components for this group (just the name as a single component)."""
+        return [self.name]
+
+
 # Global helper function for format checking (used by LogManager and internally by classes)
 def is_correct_day_format(date_day: str) -> bool:
     """Check if the date_day is in the correct format YYYY-MM-DD."""
@@ -51,11 +81,33 @@ class LogFile:
 
     @classmethod
     def from_path(cls, file: Path) -> "LogFile":
-        date_day = file.parent.parent.parent.name
+        # Work backwards from the file path to reconstruct the hierarchical group structure
-        group = urllib.parse.unquote(file.parent.parent.name)
         func_name = file.parent.name
+
+        # Traverse up from func_dir to find the date_day directory
+        current_path = file.parent.parent  # Start from group level
+        group_components: list[str] = []
+
+        while (
+            current_path.parent.name != current_path.parent.parent.name
+        ):  # Until we reach base_dir
+            parent_name = current_path.name
+            # Check if this looks like a date directory (YYYY-MM-DD format)
+            if is_correct_day_format(parent_name):
+                date_day = parent_name
+                base_dir = current_path.parent
+                break
+            # This is a group component, URL decode it
+            group_components.insert(0, urllib.parse.unquote(parent_name))
+            current_path = current_path.parent
+        else:
+            # Fallback: assume single-level structure
+            date_day = file.parent.parent.parent.name
+            group_components = [urllib.parse.unquote(file.parent.parent.name)]
             base_dir = file.parent.parent.parent.parent
 
+        group = "/".join(group_components)
+
         filename_stem = file.stem
         parts = filename_stem.split("_", 1)
         if len(parts) != 2:
@@ -75,13 +127,16 @@ class LogFile:
         )
 
     def get_file_path(self) -> Path:
-        return (
+        # Create nested directory structure for hierarchical groups
-            self._base_dir
+        path = self._base_dir / self.date_day
-            / self.date_day
+
-            / urllib.parse.quote(self.group, safe="")
+        # Split group by slash and create nested directories
-            / self.func_name
+        # Dynamic elements are already URL encoded at LogFile creation time
-            / f"{self.date_second}_{self.op_key}.log"
+        group_components = self.group.split("/")
-        )
+        for component in group_components:
+            path = path / component
+
+        return path / self.func_name / f"{self.date_second}_{self.op_key}.log"
 
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, LogFile):
@@ -133,12 +188,16 @@ class LogFuncDir:
         )
 
     def get_dir_path(self) -> Path:
-        return (
+        # Create nested directory structure for hierarchical groups
-            self._base_dir
+        path = self._base_dir / self.date_day
-            / self.date_day
+
-            / urllib.parse.quote(self.group, safe="")
+        # Split group by slash and create nested directories
-            / self.func_name
+        # Dynamic elements are already URL encoded at LogFile creation time
-        )
+        group_components = self.group.split("/")
+        for component in group_components:
+            path = path / component
+
+        return path / self.func_name
 
     def get_log_files(self) -> list[LogFile]:
         dir_path = self.get_dir_path()
@@ -184,8 +243,21 @@ class LogFuncDir:
 @dataclass(frozen=True)
 class LogGroupDir:
     date_day: str
-    group: str
+    group_path: list[
+        str
+    ]  # Path components for nested groups, e.g., ["flakes", "flake1", "machines"]
     _base_dir: Path
+    nickname: str | None = None
+
+    @property
+    def group_name(self) -> str:
+        """Get the name of this group level (last component of path)."""
+        return self.group_path[-1] if self.group_path else ""
+
+    @property
+    def full_group_path(self) -> str:
+        """Get the full group path as a slash-separated string."""
+        return "/".join(self.group_path)
 
     def __post_init__(self) -> None:
         if not is_correct_day_format(self.date_day):
@@ -201,7 +273,51 @@ class LogGroupDir:
         )
 
     def get_dir_path(self) -> Path:
-        return self._base_dir / self.date_day / urllib.parse.quote(self.group, safe="")
+        """Get the directory path for this nested group."""
+        path = self._base_dir / self.date_day
+        for i, component in enumerate(self.group_path):
+            if i % 2 == 1:  # Odd index = dynamic element, needs URL encoding
+                path = path / urllib.parse.quote(component, safe="")
+            else:  # Even index = structure element, no encoding needed
+                path = path / component
+        return path
+
+    def get_display_name(self) -> str:
+        """Get the display name (nickname if available, otherwise group name)."""
+        return self.nickname if self.nickname else self.group_name
+
+    def get_nested_groups(self) -> list["LogGroupDir"]:
+        """Get nested LogGroupDir instances within this group."""
+        dir_path = self.get_dir_path()
+        if not dir_path.exists() or not dir_path.is_dir():
+            return []
+
+        nested_groups: list[LogGroupDir] = []
+        for subdir_path in dir_path.iterdir():
+            if subdir_path.is_dir():
+                # Check if this is a group directory (contains other groups) or a function directory
+                # Function directories should contain .log files, group directories should contain other directories
+                contains_log_files = any(
+                    f.suffix == ".log"
+                    for f in subdir_path.rglob("*.log")
+                    if f.parent == subdir_path
+                )
+                contains_subdirs = any(p.is_dir() for p in subdir_path.iterdir())
+
+                # If it contains subdirectories but no direct log files, it's likely a nested group
+                if contains_subdirs and not contains_log_files:
+                    group_name = urllib.parse.unquote(subdir_path.name)
+                    nested_path = [*self.group_path, group_name]
+                    nested_groups.append(
+                        LogGroupDir(
+                            date_day=self.date_day,
+                            group_path=nested_path,
+                            _base_dir=self._base_dir,
+                            nickname=None,  # Will be populated by LogManager if configured
+                        )
+                    )
+
+        return sorted(nested_groups)
 
     def get_log_files(self) -> list[LogFuncDir]:
         dir_path = self.get_dir_path()
@@ -211,11 +327,17 @@ class LogGroupDir:
         func_dirs_list: list[LogFuncDir] = []
         for func_dir_path in dir_path.iterdir():
             if func_dir_path.is_dir():
+                # Only include directories that actually contain log files (function directories)
+                # Skip directories that contain other directories (nested groups)
+                contains_log_files = any(
+                    f.suffix == ".log" for f in func_dir_path.iterdir() if f.is_file()
+                )
+                if contains_log_files:
                     try:
                         func_dirs_list.append(
                             LogFuncDir(
                                 date_day=self.date_day,
-                            group=self.group,
+                                group=self.full_group_path,
                                 func_name=func_dir_path.name,
                                 _base_dir=self._base_dir,
                             )
@@ -232,8 +354,9 @@ class LogGroupDir:
             return NotImplemented
         return (
             self.date_day == other.date_day
-            and self.group == other.group
+            and self.group_path == other.group_path
             and self._base_dir == other._base_dir
+            and self.nickname == other.nickname
         )
 
     def __lt__(self, other: object) -> bool:
@@ -242,8 +365,8 @@ class LogGroupDir:
         # Primary sort: date (newest first)
         if self._date_obj != other._date_obj:
             return self._date_obj > other._date_obj
-        # Secondary sort: group (alphabetical ascending)
+        # Secondary sort: group path (alphabetical ascending)
-        return self.group < other.group
+        return self.group_path < other.group_path
 
 
 @total_ordering
@@ -251,6 +374,7 @@ class LogGroupDir:
 class LogDayDir:
     date_day: str
     _base_dir: Path
+    group_configs: dict[str, LogGroupConfig] = field(default_factory=dict)
 
     def __post_init__(self) -> None:
         if not is_correct_day_format(self.date_day):
@@ -268,35 +392,117 @@ class LogDayDir:
     def get_dir_path(self) -> Path:
         return self._base_dir / self.date_day
 
+    def get_root_groups(self) -> list[LogGroupDir]:
+        """Get root-level LogGroupDir instances."""
+        return self._get_groups_at_path([])
+
     def get_log_files(self) -> list[LogGroupDir]:
-        dir_path = self.get_dir_path()
+        """Backward compatibility method - returns root groups."""
+        return self.get_root_groups()
+
+    def _get_groups_at_path(self, current_path: list[str]) -> list[LogGroupDir]:
+        # Build the current directory path
+        dir_path = self._base_dir / self.date_day
+        for i, component in enumerate(current_path):
+            if i % 2 == 1:  # Odd index = dynamic element, needs URL encoding
+                dir_path = dir_path / urllib.parse.quote(component, safe="")
+            else:  # Even index = structure element, no encoding needed
+                dir_path = dir_path / component
+
         if not dir_path.exists() or not dir_path.is_dir():
             return []
 
         group_dirs_list: list[LogGroupDir] = []
 
-        # First level: group directories
+        # Look for group directories at this level
-        for group_dir_path in dir_path.iterdir():
+        for subdir_path in dir_path.iterdir():
-            if group_dir_path.is_dir():
+            if subdir_path.is_dir():
-                group_name = urllib.parse.unquote(group_dir_path.name)
+                group_name = urllib.parse.unquote(subdir_path.name)
+                group_path = [*current_path, group_name]
+
+                # A directory is a group directory if:
+                # 1. It contains function directories (directories with .log files), OR
+                # 2. It contains other group directories (nested structure)
+                # 3. It's NOT itself a function directory (doesn't contain .log files directly)
+
+                is_function_dir = self._is_function_directory(subdir_path)
+
+                if not is_function_dir:  # Not a function directory
+                    contains_functions = self._contains_function_directories(
+                        subdir_path
+                    )
+                    contains_groups = self._contains_group_directories(subdir_path)
+
+                    # If it contains either functions or groups, it's a valid group directory
+                    if contains_functions or contains_groups:
                         try:
+                            # Find nickname from configuration
+                            nickname = None
+                            config = self._find_config_for_path(group_path)
+                            if config:
+                                nickname = config.nickname
+
                             group_dirs_list.append(
                                 LogGroupDir(
                                     date_day=self.date_day,
-                            group=group_name,
+                                    group_path=group_path,
                                     _base_dir=self._base_dir,
+                                    nickname=nickname,
                                 )
                             )
                         except ValueError:
                             log.warning(
-                        f"Warning: Skipping malformed group directory '{group_dir_path.name}' in '{dir_path}'."
+                                f"Warning: Skipping malformed group directory '{subdir_path.name}' in '{dir_path}'."
                             )
+
         return sorted(group_dirs_list)
 
+    def _contains_function_directories(self, dir_path: Path) -> bool:
+        """Check if directory contains function directories (directories with .log files)."""
+        for subdir in dir_path.iterdir():
+            if subdir.is_dir():
+                # Check if this subdirectory contains .log files directly
+                if any(f.suffix == ".log" for f in subdir.iterdir() if f.is_file()):
+                    return True
+        return False
+
+    def _is_function_directory(self, dir_path: Path) -> bool:
+        """Check if a directory is a function directory (contains .log files directly)."""
+        return any(f.suffix == ".log" for f in dir_path.iterdir() if f.is_file())
+
+    def _contains_group_directories(self, dir_path: Path) -> bool:
+        """Check if directory contains nested group directories."""
+        for subdir in dir_path.iterdir():
+            if subdir.is_dir() and not self._is_function_directory(subdir):
+                # If subdir is not a function directory, it might be a group directory
+                return True
+        return False
+
+    def _find_config_for_path(self, group_path: list[str]) -> LogGroupConfig | None:
+        """Find the configuration for a given group path."""
+        if not group_path:
+            return None
+
+        current_config = self.group_configs.get(group_path[0])
+        if not current_config:
+            return None
+
+        # Traverse down the hierarchy
+        for component in group_path[1:]:
+            current_config = current_config.get_child(component)
+            if not current_config:
+                return None
+
+        return current_config
+
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, LogDayDir):
             return NotImplemented
-        return self.date_day == other.date_day and self._base_dir == other._base_dir
+        return (
+            self.date_day == other.date_day
+            and self._base_dir == other._base_dir
+            and self.group_configs == other.group_configs
+        )
 
     def __lt__(self, other: object) -> bool:
         if not isinstance(other, LogDayDir):
@@ -308,19 +514,109 @@ class LogDayDir:
 @dataclass(frozen=True)
 class LogManager:
     base_dir: Path
+    root_group_configs: dict[str, LogGroupConfig] = field(default_factory=dict)
+
+    def add_root_group_config(self, group_config: LogGroupConfig) -> "LogManager":
+        """Return a new LogManager with the added root-level group configuration."""
+        new_configs = {**self.root_group_configs, group_config.name: group_config}
+        return LogManager(base_dir=self.base_dir, root_group_configs=new_configs)
+
+    def find_group_config(self, group_path: list[str]) -> LogGroupConfig | None:
+        """Find group configuration by traversing the hierarchical path.
+
+        Only looks at structure elements (even indices), ignoring dynamic names (odd indices).
+        """
+        if not group_path:
+            return None
+
+        current_config = self.root_group_configs.get(group_path[0])
+        if not current_config:
+            return None
+
+        # If only root group, return it
+        if len(group_path) == 1:
+            return current_config
+
+        # Traverse down the hierarchy, only looking at structure elements (even indices)
+        for i in range(2, len(group_path), 2):
+            structure_name = group_path[i]
+            current_config = current_config.get_child(structure_name)
+            if not current_config:
+                return None
+
+        return current_config
+
+    def get_group_display_name(self, group_path: list[str] | str) -> str:
+        """Get the display name for a group (nickname if configured, otherwise group name).
+
+        For alternating structure/dynamic pattern:
+        - Structure elements (even indices): use configured nickname
+        - Dynamic elements (odd indices): use actual name
+        """
+        if isinstance(group_path, str):
+            group_path = group_path.split("/")
+
+        if not group_path:
+            return ""
+
+        # Check if the last element is a structure element (even index) or dynamic element (odd index)
+        last_index = len(group_path) - 1
+
+        if last_index % 2 == 0:
+            # Even index = structure element, try to find config
+            config = self.find_group_config(group_path)
+            if config:
+                return config.get_display_name()
+            # Fallback to the structure name itself
+            return group_path[-1]
+        # Odd index = dynamic element, return the actual name
+        return group_path[-1]
+
+    def create_nested_log_group_dir(
+        self, date_day: str, group_path: list[str]
+    ) -> LogGroupDir:
+        """Create a LogGroupDir with nickname support if configured."""
+        config = self.find_group_config(group_path)
+        nickname = config.nickname if config else None
+
+        return LogGroupDir(
+            date_day=date_day,
+            group_path=group_path,
+            _base_dir=self.base_dir,
+            nickname=nickname,
+        )
 
     def create_log_file(
-        self, func: Callable, op_key: str, group: str | None = None
+        self, func: Callable, op_key: str, group_path: str | list[str] | None = None
     ) -> LogFile:
         now_utc = datetime.datetime.now(tz=datetime.UTC)
 
-        if group is None:
+        if group_path is None:
-            group = "default"
+            group_path = ["default"]
+        elif isinstance(group_path, str):
+            group_path = group_path.split("/")
+
+        # Validate that the group path structure is registered in the configuration
+        if not self._is_group_path_registered(group_path):
+            group_str = "/".join(group_path)
+            msg = f"Group structure '{group_str}' is not valid. Root group '{group_path[0]}' or structure elements at even indices are not registered."
+            raise ValueError(msg)
+
+        # URL encode dynamic elements (odd indices) before creating group string
+        encoded_group_path = []
+        for i, component in enumerate(group_path):
+            if i % 2 == 1:  # Odd index = dynamic element, needs URL encoding
+                encoded_group_path.append(urllib.parse.quote(component, safe=""))
+            else:  # Even index = structure element, no encoding needed
+                encoded_group_path.append(component)
+
+        # Convert encoded path to string for LogFile
+        group_str = "/".join(encoded_group_path)
 
         log_file = LogFile(
             op_key=op_key,
             date_day=now_utc.strftime("%Y-%m-%d"),
-            group=group,
+            group=group_str,
             date_second=now_utc.strftime("%H-%M-%S"),  # Corrected original's %H-$M-%S
             func_name=func.__name__,
             _base_dir=self.base_dir,
@@ -336,6 +632,57 @@ class LogManager:
         log_path.touch()
         return log_file
 
+    def _is_group_path_registered(self, group_path: list[str]) -> bool:
+        """Check if the given group path structure is registered in the configuration.
+
+        This validates the group structure (e.g., clans/<name>/machines) but allows
+        dynamic names (e.g., <name> can be any value).
+        """
+        # Special case: allow "default" group without registration
+        if group_path == ["default"]:
+            return True
+
+        # For dynamic group validation, we need to check if the structure exists
+        # by matching the pattern, not the exact path
+        return self._validate_group_structure(group_path)
+
+    def _validate_group_structure(self, group_path: list[str]) -> bool:
+        """Validate that the group structure exists, allowing dynamic names.
+
+        Pattern alternates: structure -> dynamic -> structure -> dynamic -> ...
+        - Even indices (0, 2, 4, ...): must be registered group names (structure elements)
+        - Odd indices (1, 3, 5, ...): can be any dynamic names (will be URL encoded)
+
+        Examples:
+        - ["clans", "repo-name", "default"] -> clans(structure) -> repo-name(dynamic) -> default(structure)
+        - ["clans", "repo-name", "machines", "machine-name"] -> clans(struct) -> repo-name(dyn) -> machines(struct) -> machine-name(dyn)
+        """
+        if not group_path:
+            return False
+
+        # Check if root group exists (index 0 - always structure)
+        root_group = group_path[0]
+        if root_group not in self.root_group_configs:
+            return False
+
+        if len(group_path) == 1:
+            return True
+
+        # For longer paths, traverse the structure elements only
+        current_config = self.root_group_configs[root_group]
+
+        # Check all structure elements (even indices starting from 2)
+        for i in range(2, len(group_path), 2):
+            structure_name = group_path[i]
+
+            # Look for this structure in current config's children
+            if structure_name not in current_config.children:
+                return False
+
+            current_config = current_config.children[structure_name]
+
+        return True
+
     def list_log_days(self) -> list[LogDayDir]:
         if not self.base_dir.exists() or not self.base_dir.is_dir():
             return []
@@ -350,6 +697,7 @@ class LogManager:
                         LogDayDir(
                             date_day=day_dir_candidate_path.name,
                             _base_dir=self.base_dir,
+                            group_configs=self.root_group_configs,
                         )
                     )
                 except ValueError:
@@ -363,41 +711,186 @@ class LogManager:
         self,
         op_key_to_find: str,
         specific_date_day: str | None = None,
-        specific_group: str | None = None,
+        specific_group: list[str] | str | None = None,
     ) -> LogFile | None:
         days_to_search: list[LogDayDir]
 
         if specific_date_day:
             if not is_correct_day_format(specific_date_day):
-                # print(f"Warning: Provided specific_date_day '{specific_date_day}' is not in YYYY-MM-DD format.")
                 return None
             try:
                 target_day_dir = LogDayDir(
-                    date_day=specific_date_day, _base_dir=self.base_dir
+                    date_day=specific_date_day,
+                    _base_dir=self.base_dir,
+                    group_configs=self.root_group_configs,
                 )
-                if (
+                if not target_day_dir.get_dir_path().exists():
-                    not target_day_dir.get_dir_path().exists()
-                ):  # Check if dir exists on disk
                     return None
-                days_to_search = [target_day_dir]  # Search only this specific day
+                days_to_search = [target_day_dir]
-            except ValueError:  # If LogDayDir construction fails (e.g. date_day format despite is_correct_day_format)
+            except ValueError:
                 return None
         else:
-            days_to_search = self.list_log_days()  # Already sorted, newest day first
+            days_to_search = self.list_log_days()
 
-        for day_dir in (
+        # If specific_group is provided, use filter function to navigate directly
-            days_to_search
+        if specific_group is not None:
-        ):  # Iterates newest day first if days_to_search came from list_log_days()
+            # Convert string to array if needed (backward compatibility)
-            # day_dir.get_log_files() returns List[LogGroupDir], sorted by group name
+            if isinstance(specific_group, str):
-            for group_dir in day_dir.get_log_files():
+                specific_group_array = specific_group.split("/")
-                # Skip this group if specific_group is provided and doesn't match
+            else:
-                if specific_group is not None and group_dir.group != specific_group:
+                specific_group_array = specific_group
+
+            for day_dir in days_to_search:
+                result = self._search_log_file_in_specific_group(
+                    day_dir, op_key_to_find, specific_group_array
+                )
+                if result:
+                    return result
+            return None
+
+        # Search all groups if no specific group provided
+        for day_dir in days_to_search:
+            result = self._search_log_file_in_groups(
+                day_dir.get_root_groups(), op_key_to_find, None
+            )
+            if result:
+                return result
+        return None
+
+    def _search_log_file_in_specific_group(
+        self, day_dir: LogDayDir, op_key_to_find: str, specific_group: list[str]
+    ) -> LogFile | None:
+        """Search for a log file in a specific group using the filter function."""
+        # Build the directory path using the same logic as filter function
+        dir_path = day_dir.get_dir_path()
+        for i, component in enumerate(specific_group):
+            if i % 2 == 1:  # Odd index = dynamic element, needs URL encoding
+                dir_path = dir_path / urllib.parse.quote(component, safe="")
+            else:  # Even index = structure element, no encoding needed
+                dir_path = dir_path / component
+
+        if not dir_path.exists() or not dir_path.is_dir():
+            return None
+
+        # Search for function directories in this specific group
+        for func_dir_path in dir_path.iterdir():
+            if func_dir_path.is_dir():
+                # Check if this is a function directory (contains .log files)
+                contains_log_files = any(
+                    f.suffix == ".log" for f in func_dir_path.iterdir() if f.is_file()
+                )
+                if contains_log_files:
+                    try:
+                        # Create LogFuncDir and search for the log file
+                        # Need to create the group string that matches what create_log_file creates
+                        # Encode dynamic elements (odd indices) to match the stored LogFile.group
+                        encoded_group_path = []
+                        for i, component in enumerate(specific_group):
+                            if (
+                                i % 2 == 1
+                            ):  # Odd index = dynamic element, needs URL encoding
+                                encoded_group_path.append(
+                                    urllib.parse.quote(component, safe="")
+                                )
+                            else:  # Even index = structure element, no encoding needed
+                                encoded_group_path.append(component)
+
+                        func_dir = LogFuncDir(
+                            date_day=day_dir.date_day,
+                            group="/".join(encoded_group_path),
+                            func_name=func_dir_path.name,
+                            _base_dir=self.base_dir,
+                        )
+                        # Search through log files in this function directory
+                        for log_file in func_dir.get_log_files():
+                            if log_file.op_key == op_key_to_find:
+                                return log_file
+                    except ValueError:
+                        # Skip malformed function directories
                         continue
 
-                # group_dir.get_log_files() returns List[LogFuncDir], sorted by func_name
+        return None
+
+    def _search_log_file_in_groups(
+        self,
+        group_dirs: list[LogGroupDir],
+        op_key_to_find: str,
+        specific_group: str | None = None,
+    ) -> LogFile | None:
+        """Recursively search for a log file in group directories."""
+        for group_dir in group_dirs:
+            # Search in function directories of this group
             for func_dir in group_dir.get_log_files():
                 # func_dir.get_log_files() returns List[LogFile], sorted newest file first
                 for log_file in func_dir.get_log_files():
                     if log_file.op_key == op_key_to_find:
                         return log_file
+
+            # Recursively search in nested groups
+            nested_groups = group_dir.get_nested_groups()
+            result = self._search_log_file_in_groups(
+                nested_groups, op_key_to_find, specific_group
+            )
+            if result:
+                return result
+
         return None
+
+    def filter(self, path: list[str], date_day: str | None = None) -> list[str]:
+        """Filter and list folders at the specified hierarchical path.
+
+        Args:
+            path: List of path components to navigate to. Empty list returns top-level groups.
+                  For alternating structure/dynamic pattern:
+                  - ["clans"] lists all dynamic names under clans
+                  - ["clans", <name>, "machines"] lists all dynamic names under machines
+                  - [] lists all top-level groups
+            date_day: Optional date to filter by. If None, uses most recent day.
+
+        Returns:
+            List of folder names (decoded) at the specified path level.
+        """
+        # Get the day to search in
+        if date_day is None:
+            days = self.list_log_days()
+            if not days:
+                return []
+            day_dir = days[0]  # Most recent day
+        else:
+            if not is_correct_day_format(date_day):
+                return []
+            try:
+                day_dir = LogDayDir(
+                    date_day=date_day,
+                    _base_dir=self.base_dir,
+                    group_configs=self.root_group_configs,
+                )
+                if not day_dir.get_dir_path().exists():
+                    return []
+            except ValueError:
+                return []
+
+        # Empty path means list top-level groups
+        if not path:
+            return list(self.root_group_configs.keys())
+
+        # Build the directory path to search in
+        dir_path = day_dir.get_dir_path()
+        for i, component in enumerate(path):
+            if i % 2 == 1:  # Odd index = dynamic element, needs URL encoding
+                dir_path = dir_path / urllib.parse.quote(component, safe="")
+            else:  # Even index = structure element, no encoding needed
+                dir_path = dir_path / component
+
+        if not dir_path.exists() or not dir_path.is_dir():
+            return []
+
+        # List directories and decode their names
+        folder_names = []
+        for subdir_path in dir_path.iterdir():
+            if subdir_path.is_dir():
+                # Decode the directory name
+                decoded_name = urllib.parse.unquote(subdir_path.name)
+                folder_names.append(decoded_name)
+
+        return sorted(folder_names)

pkgs/clan-cli/clan_lib/log_manager/api.py

@@ -24,7 +24,8 @@ def list_log_groups(date_day: str) -> list[LogGroupDir]:
 def list_log_funcs_at_day(date_day: str, group: str) -> list[LogFuncDir]:
     """List all logs for a specific function on a specific day."""
     assert LOG_MANAGER_INSTANCE is not None
-    group_dir = LogGroupDir(date_day, group, LOG_MANAGER_INSTANCE.base_dir)
+    group_path = group.split("/") if group else []
+    group_dir = LogGroupDir(date_day, group_path, LOG_MANAGER_INSTANCE.base_dir)
     return group_dir.get_log_files()
 
 

pkgs/clan-cli/clan_lib/log_manager/example_usage.py

@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+"""
+Simple LogManager example with filter function.
+
+This demonstrates:
+- Dynamic group names with URL encoding
+- Hierarchical structure navigation using the filter function
+- Pattern: clans -> <dynamic_name> -> machines -> <dynamic_name>
+"""
+
+from pathlib import Path
+
+from clan_lib.log_manager import LogGroupConfig, LogManager
+
+
+def example_function() -> None:
+    """Example function for creating logs."""
+
+
+def deploy_machine() -> None:
+    """Function for deploying machines."""
+
+
+def main() -> None:
+    """Simple LogManager demonstration with filter function."""
+    # Setup
+    log_manager = LogManager(base_dir=Path("/tmp/clan_logs"))
+
+    # Configure structure: clans -> <dynamic> -> machines -> <dynamic>
+    clans_config = LogGroupConfig("clans", "Clans")
+    machines_config = LogGroupConfig("machines", "Machines")
+    clans_config = clans_config.add_child(machines_config)
+    log_manager = log_manager.add_root_group_config(clans_config)
+
+    print("=== LogManager Filter Function Example ===\n")
+
+    # Create some example logs
+    repos = ["/home/user/Projects/qubasas_clan", "https://github.com/qubasa/myclan"]
+    machines = ["wintux", "demo", "gchq-local"]
+
+    for repo in repos:
+        for machine in machines:
+            log_manager.create_log_file(
+                deploy_machine,
+                f"deploy_{machine}",
+                ["clans", repo, "machines", machine],
+            )
+
+    print("Created log files for multiple repos and machines\n")
+
+    # Demonstrate filter function
+    print("=== Using the filter() function ===")
+
+    # 1. List top-level groups
+    top_level = log_manager.filter([])
+    print(f"1. Top-level groups: {top_level}")
+
+    # 2. List all repositories under 'clans'
+    clans_repos = log_manager.filter(["clans"])
+    print(f"2. Repositories under clans: {clans_repos}")
+
+    # 3. List machines under first repository
+    if clans_repos:
+        first_repo = clans_repos[0]
+        repo_machines = log_manager.filter(["clans", first_repo, "machines"])
+        print(f"3. Machines under '{first_repo}': {repo_machines}")
+
+    # 4. List machines under second repository
+    if len(clans_repos) > 1:
+        second_repo = clans_repos[1]
+        repo_machines = log_manager.filter(["clans", second_repo, "machines"])
+        print(f"4. Machines under '{second_repo}': {repo_machines}")
+
+    print("\n=== Using get_log_file with arrays ===")
+    # Demonstrate the new array-based get_log_file functionality
+    if clans_repos and len(clans_repos) > 0:
+        specific_log = log_manager.get_log_file(
+            "deploy_wintux",
+            specific_group=["clans", clans_repos[0], "machines", "wintux"],
+        )
+        if specific_log:
+            print(
+                f"5. Found specific log: {specific_log.op_key} in {specific_log.func_name}"
+            )
+        else:
+            print("5. Specific log not found")
+
+    print("\n=== Key Features ===")
+    print("✓ Dynamic names with special chars (/, spaces, etc.) work")
+    print("✓ Names are URL encoded in filesystem but returned decoded")
+    print("✓ Filter function navigates hierarchy with simple arrays")
+    print("✓ get_log_file now accepts specific_group as array")
+    print("✓ Empty array [] lists top-level groups")
+    print("✓ Odd indices are dynamic, even indices are structure")
+
+
+if __name__ == "__main__":
+    main()

pkgs/clan-cli/clan_lib/log_manager/test_url_encoding.py

@@ -0,0 +1,187 @@
+# Test file specifically for URL encoding functionality
+import urllib.parse
+from pathlib import Path
+
+from clan_lib.log_manager import LogGroupConfig, LogManager
+
+
+def sample_function() -> None:
+    """Sample function for testing."""
+
+
+class TestURLEncoding:
+    """Test URL encoding for dynamic group names."""
+
+    def test_dynamic_name_url_encoding_forward_slash(self, tmp_path: Path) -> None:
+        """Test that dynamic names with forward slashes get URL encoded."""
+        log_manager = LogManager(base_dir=tmp_path)
+
+        # Register structure elements
+        clans_config = LogGroupConfig("clans", "Clans")
+        default_config = LogGroupConfig("default", "Default")
+        clans_config = clans_config.add_child(default_config)
+        log_manager = log_manager.add_root_group_config(clans_config)
+
+        # Use a dynamic name with forward slashes
+        dynamic_name = "/home/user/Projects/qubasas_clan"
+        group_path = ["clans", dynamic_name, "default"]
+
+        log_file = log_manager.create_log_file(sample_function, "test_op", group_path)
+
+        # Check that the LogFile uses encoded path for file system operations
+        file_path = log_file.get_file_path()
+        expected_encoded = urllib.parse.quote(dynamic_name, safe="")
+
+        # Verify the encoded name appears in the file path
+        assert expected_encoded in str(file_path)
+        assert file_path.exists()
+
+        # Verify that no intermediate directories were created from the forward slashes
+        # The encoded name should be a single directory
+        day_dir = tmp_path / log_file.date_day / "clans"
+        direct_children = [p.name for p in day_dir.iterdir() if p.is_dir()]
+        assert len(direct_children) == 1
+        assert direct_children[0] == expected_encoded
+
+    def test_dynamic_name_url_encoding_special_characters(self, tmp_path: Path) -> None:
+        """Test URL encoding of dynamic names with various special characters."""
+        log_manager = LogManager(base_dir=tmp_path)
+
+        # Register structure elements
+        clans_config = LogGroupConfig("clans", "Clans")
+        machines_config = LogGroupConfig("machines", "Machines")
+        clans_config = clans_config.add_child(machines_config)
+        log_manager = log_manager.add_root_group_config(clans_config)
+
+        # Test various special characters
+        test_cases = [
+            "repo with spaces",
+            "repo&with&ampersands",
+            "repo!with!exclamations",
+            "repo%with%percent",
+            "repo@with@symbols",
+            "repo#with#hash",
+            "repo+with+plus",
+        ]
+
+        for dynamic_name in test_cases:
+            group_path = ["clans", dynamic_name, "machines", f"machine-{dynamic_name}"]
+
+            log_file = log_manager.create_log_file(
+                sample_function, f"test_{dynamic_name}", group_path
+            )
+
+            # Check that the file was created and encoded names appear in path
+            file_path = log_file.get_file_path()
+            assert file_path.exists()
+
+            # Verify encoding for both dynamic elements (indices 1 and 3)
+            expected_encoded_repo = urllib.parse.quote(dynamic_name, safe="")
+            expected_encoded_machine = urllib.parse.quote(
+                f"machine-{dynamic_name}", safe=""
+            )
+
+            assert expected_encoded_repo in str(file_path)
+            assert expected_encoded_machine in str(file_path)
+
+    def test_structure_elements_not_encoded(self, tmp_path: Path) -> None:
+        """Test that structure elements (even indices) are NOT URL encoded."""
+        log_manager = LogManager(base_dir=tmp_path)
+
+        # Register structure elements with special characters in their names
+        # (though this is not typical, testing to ensure they're not encoded)
+        test_config = LogGroupConfig("test-group", "Test Group")
+        sub_config = LogGroupConfig("sub-group", "Sub Group")
+        test_config = test_config.add_child(sub_config)
+        log_manager = log_manager.add_root_group_config(test_config)
+
+        # Use structure names that contain hyphens (common case)
+        group_path = ["test-group", "dynamic-name", "sub-group", "another-dynamic"]
+
+        log_file = log_manager.create_log_file(sample_function, "test_op", group_path)
+        file_path = log_file.get_file_path()
+
+        # Structure elements should NOT be encoded
+        assert "test-group" in str(file_path)  # Structure element, not encoded
+        assert "sub-group" in str(file_path)  # Structure element, not encoded
+
+        # Dynamic elements should be encoded
+        expected_dynamic1 = urllib.parse.quote("dynamic-name", safe="")
+        expected_dynamic2 = urllib.parse.quote("another-dynamic", safe="")
+        assert expected_dynamic1 in str(file_path)
+        assert expected_dynamic2 in str(file_path)
+
+    def test_url_encoding_with_unicode_characters(self, tmp_path: Path) -> None:
+        """Test URL encoding with Unicode characters in dynamic names."""
+        log_manager = LogManager(base_dir=tmp_path)
+
+        # Register structure elements
+        clans_config = LogGroupConfig("clans", "Clans")
+        default_config = LogGroupConfig("default", "Default")
+        clans_config = clans_config.add_child(default_config)
+        log_manager = log_manager.add_root_group_config(clans_config)
+
+        # Use Unicode characters in dynamic name
+        dynamic_name = "项目/中文/测试"  # Chinese characters with slashes
+        group_path = ["clans", dynamic_name, "default"]
+
+        log_file = log_manager.create_log_file(
+            sample_function, "unicode_test", group_path
+        )
+        file_path = log_file.get_file_path()
+
+        # Check that file was created and Unicode was properly encoded
+        assert file_path.exists()
+        expected_encoded = urllib.parse.quote(dynamic_name, safe="")
+        assert expected_encoded in str(file_path)
+
+        # Verify no intermediate directories from slashes in Unicode string
+        day_dir = tmp_path / log_file.date_day / "clans"
+        direct_children = [p.name for p in day_dir.iterdir() if p.is_dir()]
+        assert len(direct_children) == 1
+        assert direct_children[0] == expected_encoded
+
+    def test_backward_compatibility_single_element_paths(self, tmp_path: Path) -> None:
+        """Test that single-element paths (no dynamic names) still work."""
+        log_manager = LogManager(base_dir=tmp_path)
+
+        # Register simple structure
+        default_config = LogGroupConfig("default", "Default")
+        log_manager = log_manager.add_root_group_config(default_config)
+
+        # Use simple single-element path (no dynamic names to encode)
+        group_path = ["default"]
+
+        log_file = log_manager.create_log_file(
+            sample_function, "simple_test", group_path
+        )
+        file_path = log_file.get_file_path()
+
+        # Should work exactly as before
+        assert file_path.exists()
+        assert "default" in str(file_path)
+        # No encoding should have occurred
+        assert urllib.parse.quote("default", safe="") == "default"  # No special chars
+
+    def test_empty_dynamic_name_encoding(self, tmp_path: Path) -> None:
+        """Test URL encoding with empty string as dynamic name."""
+        log_manager = LogManager(base_dir=tmp_path)
+
+        # Register structure elements
+        clans_config = LogGroupConfig("clans", "Clans")
+        default_config = LogGroupConfig("default", "Default")
+        clans_config = clans_config.add_child(default_config)
+        log_manager = log_manager.add_root_group_config(clans_config)
+
+        # Use empty string as dynamic name
+        group_path = ["clans", "", "default"]
+
+        log_file = log_manager.create_log_file(
+            sample_function, "empty_test", group_path
+        )
+        file_path = log_file.get_file_path()
+
+        # Should work - empty string gets encoded as empty string
+        assert file_path.exists()
+        expected_encoded = urllib.parse.quote("", safe="")
+        assert expected_encoded == ""  # Empty string encodes to empty string

pkgs/clan-cli/shell.nix

@@ -16,6 +16,7 @@ mkShell {
       with ps;
       [
         mypy
+        pytest-cov
       ]
       ++ (clan-cli.devshellPyDeps ps)
     ))