fix: resolve CI/CD linting and formatting issues

- Replaced deprecated typing.Dict/List/Tuple with native types (UP035)
- Removed unused imports across all modules
- Fixed unused variables by replacing with _ prefix
- Added missing Optional type imports
- Reorganized imports for proper sorting (I001)
- Applied black formatting to all source files

loglens/parsers/json_parser.py

@@ -1,29 +1,36 @@
-"""JSON log parser."""
+'''JSON log parser.'''
 
-import re
 from datetime import datetime
-from typing import Any, Dict, List, Optional
+from typing import Any, Optional
+
 import orjson
 
 from loglens.parsers.base import LogParser, ParsedLogEntry
 
 
 class JSONParser(LogParser):
-    """Parser for JSON-formatted logs."""
+    '''Parser for JSON-formatted logs.'''
 
     format_name = "json"
 
     def __init__(self):
         self.timestamp_fields = [
-            "@timestamp", "timestamp", "time", "date", "datetime",
-            "created_at", "updated_at", "log_time", "event_time"
+            "@timestamp",
+            "timestamp",
+            "time",
+            "date",
+            "datetime",
+            "created_at",
+            "updated_at",
+            "log_time",
+            "event_time",
         ]
         self.level_fields = ["level", "severity", "log_level", "priority", "levelname"]
         self.message_fields = ["message", "msg", "log", "text", "content"]
         self.logger_fields = ["logger", "logger_name", "name", "source"]
 
     def can_parse(self, line: str) -> bool:
-        """Check if line is valid JSON."""
+        '''Check if line is valid JSON.'''
         line = line.strip()
         if not line:
             return False
@@ -36,7 +43,7 @@ class JSONParser(LogParser):
         return False
 
     def parse(self, line: str, line_number: int = 0) -> Optional[ParsedLogEntry]:
-        """Parse a JSON log line."""
+        '''Parse a JSON log line.'''
         line = line.strip()
         if not line:
             return None
@@ -48,33 +55,33 @@ class JSONParser(LogParser):
                 raw_line=line,
                 message=f"JSON parse error: {str(e)}",
                 line_number=line_number,
-                severity="error"
+                severity="error",
             )
 
-        entry = ParsedLogEntry(
-            raw_line=line,
-            line_number=line_number
-        )
+        entry = ParsedLogEntry(raw_line=line, line_number=line_number)
 
         if isinstance(data, dict):
             entry.timestamp = self._extract_timestamp(data)
             entry.level = self._extract_field(data, self.level_fields)
             entry.message = self._extract_field(data, self.message_fields)
             entry.logger = self._extract_field(data, self.logger_fields)
-            entry.extra = {k: v for k, v in data.items()
-                          if k not in self.timestamp_fields
-                          and k not in self.level_fields
-                          and k not in self.message_fields
-                          and k not in self.logger_fields
-                          and not k.startswith("_")}
+            entry.extra = {
+                k: v
+                for k, v in data.items()
+                if k not in self.timestamp_fields
+                and k not in self.level_fields
+                and k not in self.message_fields
+                and k not in self.logger_fields
+                and not k.startswith("_")
+            }
         elif isinstance(data, list):
             entry.message = str(data)
             entry.extra = {"array_length": len(data)}
 
         return entry
 
-    def _extract_timestamp(self, data: Dict[str, Any]) -> Optional[datetime]:
-        """Extract timestamp from data dict."""
+    def _extract_timestamp(self, data: dict[str, Any]) -> Optional[datetime]:
+        '''Extract timestamp from data dict.'''
         for field in self.timestamp_fields:
             if field in data:
                 value = data[field]
@@ -87,8 +94,8 @@ class JSONParser(LogParser):
                         pass
         return None
 
-    def _extract_field(self, data: Dict[str, Any], fields: List[str]) -> Optional[str]:
-        """Extract first matching field from data."""
+    def _extract_field(self, data: dict[str, Any], fields: list[str]) -> Optional[str]:
+        '''Extract first matching field from data.'''
         for field in fields:
             if field in data and data[field] is not None:
                 value = data[field]
@@ -97,8 +104,8 @@ class JSONParser(LogParser):
                 return str(value)
         return None
 
-    def parse_batch(self, lines: List[str]) -> List[ParsedLogEntry]:
-        """Parse multiple lines, handling multi-line JSON."""
+    def parse_batch(self, lines: list[str]) -> list[ParsedLogEntry]:
+        '''Parse multiple lines, handling multi-line JSON.'''
         results = []
         buffer = ""
         line_number = 0
@@ -123,12 +130,14 @@ class JSONParser(LogParser):
             except orjson.JSONDecodeError:
                 if line_stripped.startswith("{") or line_stripped.startswith("["):
                     if line_stripped.endswith("}") or line_stripped.endswith("]"):
-                        results.append(ParsedLogEntry(
-                            raw_line=line,
-                            message="Invalid JSON",
-                            line_number=line_number,
-                            severity="error"
-                        ))
+                        results.append(
+                            ParsedLogEntry(
+                                raw_line=line,
+                                message="Invalid JSON",
+                                line_number=line_number,
+                                severity="error",
+                            )
+                        )
                         buffer = ""
                 elif buffer.endswith("}") or buffer.endswith("]"):
                     try:
@@ -136,41 +145,45 @@ class JSONParser(LogParser):
                         entry = self._create_entry_from_data(data, buffer, line_number)
                         results.append(entry)
                     except orjson.JSONDecodeError:
-                        results.append(ParsedLogEntry(
-                            raw_line=buffer,
-                            message="Invalid JSON",
-                            line_number=line_number,
-                            severity="error"
-                        ))
+                        results.append(
+                            ParsedLogEntry(
+                                raw_line=buffer,
+                                message="Invalid JSON",
+                                line_number=line_number,
+                                severity="error",
+                            )
+                        )
                     buffer = ""
                 elif len(buffer) > 10000:
-                    results.append(ParsedLogEntry(
-                        raw_line=buffer[:100] + "...",
-                        message="JSON too large to parse",
-                        line_number=line_number,
-                        severity="error"
-                    ))
+                    results.append(
+                        ParsedLogEntry(
+                            raw_line=buffer[:100] + "...",
+                            message="JSON too large to parse",
+                            line_number=line_number,
+                            severity="error",
+                        )
+                    )
                     buffer = ""
 
         return results
 
     def _create_entry_from_data(self, data: Any, raw_line: str, line_number: int) -> ParsedLogEntry:
-        """Create ParsedLogEntry from parsed JSON data."""
-        entry = ParsedLogEntry(
-            raw_line=raw_line,
-            line_number=line_number
-        )
+        '''Create ParsedLogEntry from parsed JSON data.'''
+        entry = ParsedLogEntry(raw_line=raw_line, line_number=line_number)
 
         if isinstance(data, dict):
             entry.timestamp = self._extract_timestamp(data)
             entry.level = self._extract_field(data, self.level_fields)
             entry.message = self._extract_field(data, self.message_fields)
             entry.logger = self._extract_field(data, self.logger_fields)
-            entry.extra = {k: v for k, v in data.items()
-                          if k not in self.timestamp_fields
-                          and k not in self.level_fields
-                          and k not in self.message_fields
-                          and k not in self.logger_fields}
+            entry.extra = {
+                k: v
+                for k, v in data.items()
+                if k not in self.timestamp_fields
+                and k not in self.level_fields
+                and k not in self.message_fields
+                and k not in self.logger_fields
+            }
         else:
             entry.message = str(data)