Initial upload with CI/CD workflow

shellhist/cli/patterns.py

@@ -0,0 +1,147 @@
+"""Patterns command for detecting command sequences."""
+
+from typing import Optional
+
+import click
+from rich.console import Console
+from rich.table import Table
+
+from shellhist.core import HistoryLoader
+from shellhist.core.patterns import (
+    detect_command_pairs,
+    detect_command_triplets,
+    detect_repetitive_commands,
+    ngram_analysis,
+)
+
+
+@click.command("patterns")
+@click.option(
+    "--history",
+    "-H",
+    type=str,
+    help="Path to history file",
+)
+@click.option(
+    "--min-frequency",
+    "-m",
+    type=int,
+    default=2,
+    help="Minimum frequency for pattern detection (default: 2)",
+)
+@click.option(
+    "--type",
+    "-t",
+    type=click.Choice(["pairs", "triplets", "repetitive", "all"]),
+    default="all",
+    help="Type of patterns to detect",
+)
+@click.option(
+    "--shell",
+    "-s",
+    type=click.Choice(["bash", "zsh"]),
+    help="Shell type for parsing",
+)
+@click.pass_context
+def patterns_command(
+    ctx: click.Context,
+    history: Optional[str],
+    min_frequency: int,
+    type: str,
+    shell: Optional[str],
+) -> None:
+    """Detect repetitive command patterns in your shell history.
+    
+    Examples:
+    
+        \b
+        shellhist patterns
+        shellhist patterns --min-frequency 3
+        shellhist patterns --type pairs
+        shellhist patterns --type triplets
+    """
+    console = Console()
+    
+    try:
+        loader = HistoryLoader(history_path=history)
+        store = loader.load()
+        
+        if not store.entries:
+            console.print("[yellow]No entries found in history.[/yellow]")
+            return
+        
+        total_entries = len(store.entries)
+        
+        if type in ("pairs", "all"):
+            pairs = detect_command_pairs(store, min_frequency=min_frequency)
+        
+        if type in ("triplets", "all"):
+            triplets = detect_command_triplets(store, min_frequency=min_frequency)
+        
+        if type in ("repetitive", "all"):
+            repetitive = detect_repetitive_commands(store, min_frequency=min_frequency)
+        
+        if type == "pairs":
+            _display_patterns(console, "Command Pairs", pairs, total_entries)
+        elif type == "triplets":
+            _display_patterns(console, "Command Triplets", triplets, total_entries)
+        elif type == "repetitive":
+            _display_patterns(console, "Repetitive Commands", repetitive, total_entries)
+        else:
+            if pairs:
+                _display_patterns(console, "Command Pairs", pairs, total_entries)
+            if triplets:
+                _display_patterns(console, "Command Triplets", triplets, total_entries)
+            if repetitive:
+                _display_patterns(console, "Repetitive Commands", repetitive, total_entries)
+            
+            if not pairs and not triplets and not repetitive:
+                console.print(
+                    f"[yellow]No patterns found with minimum frequency {min_frequency}.[/yellow]"
+                )
+                console.print("Try lowering the --min-frequency threshold.")
+        
+    except FileNotFoundError as e:
+        console.print(f"[red]Error: {e}[/red]")
+        ctx.exit(1)
+    except Exception as e:
+        console.print(f"[red]Error detecting patterns: {e}[/red]")
+        ctx.exit(1)
+
+
+def _display_patterns(
+    console: Console,
+    title: str,
+    patterns: list,
+    total_entries: int,
+) -> None:
+    """Display detected patterns in a table."""
+    if not patterns:
+        return
+    
+    console.print(f"\n[bold cyan]{title}[/bold cyan]")
+    
+    table = Table(show_header=True, header_style="bold magenta")
+    table.add_column("#", width=4)
+    table.add_column("Count", width=8)
+    table.add_column("%", width=8)
+    table.add_column("Pattern", width=70)
+    
+    for i, pattern in enumerate(patterns[:30], 1):
+        if hasattr(pattern, 'commands'):
+            cmd_str = " -> ".join(pattern.commands)
+        else:
+            cmd_str = str(pattern)
+        
+        if len(cmd_str) > 68:
+            cmd_str = cmd_str[:68] + "..."
+        
+        pct = f"{pattern.percentage:.1f}%" if hasattr(pattern, 'percentage') else "N/A"
+        table.add_row(
+            str(i),
+            str(pattern.frequency),
+            pct,
+            cmd_str,
+        )
+    
+    console.print(table)