"""
CHRONOS Analyze Command
=======================

Commands for cryptographic analysis and vulnerability assessment.
"""

import time
from pathlib import Path
from typing import Optional, List
from enum import Enum

import typer
from rich.console import Console
from rich.table import Table
from rich.panel import Panel
from rich.progress import Progress, SpinnerColumn, TextColumn, BarColumn

from chronos.cli.utils import error_handler, print_success, print_warning, AnalysisError

console = Console()

app = typer.Typer(
    name="analyze",
    help="📊 Cryptographic analysis and vulnerability assessment commands.",
    rich_markup_mode="rich",
    no_args_is_help=True,
)


class CryptoAlgorithm(str, Enum):
    """Cryptographic algorithms for analysis."""
    RSA = "rsa"
    ECC = "ecc"
    AES = "aes"
    SHA = "sha"
    ALL = "all"


class AnalysisDepth(str, Enum):
    """Analysis depth levels."""
    QUICK = "quick"
    STANDARD = "standard"
    DEEP = "deep"


@app.command("crypto")
def crypto_command(
    target: Path = typer.Argument(
        Path("."),
        help="Target path to analyze for cryptographic usage.",
    ),
    algorithm: CryptoAlgorithm = typer.Option(
        CryptoAlgorithm.ALL,
        "--algorithm",
        "-a",
        help="Specific algorithm to analyze.",
    ),
    quantum_check: bool = typer.Option(
        True,
        "--quantum/--no-quantum",
        "-q/-Q",
        help="Check for quantum vulnerability.",
    ),
) -> None:
    """
    🔐 Analyze cryptographic implementations.
    
    Scans code for cryptographic usage and evaluates:
    - Algorithm strength and configuration
    - Key sizes and generation methods
    - Quantum vulnerability assessment
    - Best practice compliance
    
    [bold]Examples:[/bold]
        chronos analyze crypto ./src
        chronos analyze crypto . --algorithm rsa --quantum
    """
    with error_handler(console):
        console.print(Panel(
            f"[bold]Target:[/bold] {target.absolute()}\n"
            f"[bold]Algorithm:[/bold] {algorithm.value}\n"
            f"[bold]Quantum Check:[/bold] {quantum_check}",
            title="🔐 Cryptographic Analysis",
            border_style="blue",
        ))
        
        with Progress(
            SpinnerColumn(),
            TextColumn("[bold blue]{task.description}"),
            BarColumn(),
            console=console,
        ) as progress:
            task = progress.add_task("Scanning for crypto implementations...", total=100)
            
            for i in range(100):
                time.sleep(0.02)
                progress.update(task, advance=1)
                if i == 30:
                    progress.update(task, description="Analyzing key strengths...")
                elif i == 60:
                    progress.update(task, description="Checking quantum resistance...")
                elif i == 90:
                    progress.update(task, description="Generating report...")
        
        # Results table
        table = Table(title="Cryptographic Analysis Results", border_style="blue")
        table.add_column("Algorithm", style="cyan")
        table.add_column("Usage", style="white")
        table.add_column("Strength", style="green")
        table.add_column("Quantum Safe", style="yellow")
        
        table.add_row("RSA-2048", "0 instances", "Adequate", "[red]No[/red]")
        table.add_row("AES-256", "0 instances", "Strong", "[green]Yes[/green]")
        table.add_row("SHA-256", "0 instances", "Strong", "[yellow]Partial[/yellow]")
        table.add_row("ECC P-256", "0 instances", "Strong", "[red]No[/red]")
        
        console.print(table)
        
        if quantum_check:
            console.print(Panel(
                "[yellow]⚠ Quantum Vulnerability Notice[/yellow]\n\n"
                "RSA and ECC algorithms are vulnerable to quantum attacks.\n"
                "Consider migrating to post-quantum alternatives:\n"
                "  • CRYSTALS-Kyber (key encapsulation)\n"
                "  • CRYSTALS-Dilithium (signatures)\n"
                "  • SPHINCS+ (hash-based signatures)",
                title="Quantum Readiness",
                border_style="yellow",
            ))


@app.command("vulnerabilities")
def vulnerabilities_command(
    target: Path = typer.Argument(
        Path("."),
        help="Target to scan for vulnerabilities.",
    ),
    depth: AnalysisDepth = typer.Option(
        AnalysisDepth.STANDARD,
        "--depth",
        "-d",
        help="Analysis depth level.",
    ),
    cve_check: bool = typer.Option(
        True,
        "--cve/--no-cve",
        help="Check against CVE database.",
    ),
) -> None:
    """
    🔍 Scan for security vulnerabilities.
    
    Performs vulnerability assessment including:
    - Known CVE detection
    - Dependency vulnerabilities
    - Configuration weaknesses
    - Code security patterns
    """
    with error_handler(console):
        console.print(Panel(
            f"[bold]Target:[/bold] {target.absolute()}\n"
            f"[bold]Depth:[/bold] {depth.value}\n"
            f"[bold]CVE Check:[/bold] {cve_check}",
            title="🔍 Vulnerability Analysis",
            border_style="blue",
        ))
        
        with Progress(
            SpinnerColumn(),
            TextColumn("[bold blue]{task.description}"),
            console=console,
        ) as progress:
            task = progress.add_task("Analyzing vulnerabilities...", total=None)
            time.sleep(1)
        
        table = Table(title="Vulnerability Report", border_style="blue")
        table.add_column("Severity", style="cyan")
        table.add_column("Count", style="white")
        
        table.add_row("[red]Critical[/red]", "0")
        table.add_row("[orange3]High[/orange3]", "0")
        table.add_row("[yellow]Medium[/yellow]", "0")
        table.add_row("[green]Low[/green]", "0")
        
        console.print(table)
        print_success(console, "No vulnerabilities detected", "Analysis Complete")


@app.command("report")
def report_command(
    target: Path = typer.Argument(
        Path("."),
        help="Target to generate report for.",
    ),
    output: Path = typer.Option(
        Path("chronos-report.html"),
        "--output",
        "-o",
        help="Output file path for the report.",
    ),
    format: str = typer.Option(
        "html",
        "--format",
        "-f",
        help="Report format (html, pdf, json, markdown).",
    ),
) -> None:
    """
    📄 Generate comprehensive security analysis report.
    
    Creates a detailed report including:
    - Executive summary
    - Threat analysis results
    - Cryptographic assessment
    - Vulnerability findings
    - Remediation recommendations
    """
    with error_handler(console):
        console.print(f"[blue]Generating {format.upper()} report...[/blue]")
        
        with Progress(
            SpinnerColumn(),
            TextColumn("[bold blue]{task.description}"),
            console=console,
        ) as progress:
            task = progress.add_task("Compiling analysis data...", total=None)
            time.sleep(0.5)
            progress.update(task, description="Generating report sections...")
            time.sleep(0.5)
            progress.update(task, description="Formatting output...")
            time.sleep(0.3)
        
        # Placeholder - would generate actual report
        console.print(f"\n[green]✓[/green] Report generated: [cyan]{output}[/cyan]")
        console.print("[dim]Note: Report generation is a placeholder in this version.[/dim]")


@app.command("quantum-readiness")
def quantum_readiness_command(
    target: Path = typer.Argument(
        Path("."),
        help="Target to assess quantum readiness.",
    ),
) -> None:
    """
    ⚛️ Assess quantum computing readiness.
    
    Evaluates your system's preparedness for quantum threats:
    - Current cryptographic inventory
    - Quantum-vulnerable algorithms
    - Migration recommendations
    - Post-quantum alternatives
    """
    with error_handler(console):
        console.print(Panel(
            f"[bold]Assessing:[/bold] {target.absolute()}",
            title="⚛️ Quantum Readiness Assessment",
            border_style="magenta",
        ))
        
        with Progress(
            SpinnerColumn(),
            TextColumn("[bold magenta]{task.description}"),
            console=console,
        ) as progress:
            task = progress.add_task("Evaluating quantum readiness...", total=None)
            time.sleep(1)
        
        # Readiness score panel
        console.print(Panel(
            "[bold]Quantum Readiness Score:[/bold] [yellow]Pending Analysis[/yellow]\n\n"
            "[bold]Summary:[/bold]\n"
            "• Classical crypto detected: [dim]Scanning...[/dim]\n"
            "• Quantum-safe crypto: [dim]Scanning...[/dim]\n"
            "• Migration effort: [dim]TBD[/dim]\n\n"
            "[bold]Recommendations:[/bold]\n"
            "1. Inventory all cryptographic dependencies\n"
            "2. Prioritize migration of key exchange algorithms\n"
            "3. Implement crypto-agility patterns\n"
            "4. Monitor NIST PQC standardization",
            title="Assessment Results",
            border_style="magenta",
        ))
