"""Profile management commands for env-pro."""

import click
from typing import Optional


@click.command()
@click.argument("name")
def create(name: str):
    """Create a new profile."""
    from env_pro.core.profile import create_profile, set_active_profile

    create_profile(name)
    set_active_profile(name)
    click.echo(f"Created and activated profile '{name}'")


@click.command()
def list():
    """List all profiles."""
    from env_pro.core.profile import list_profiles, get_active_profile

    profiles = list_profiles()
    active = get_active_profile()

    if not profiles:
        click.echo("No profiles found. Run 'env-pro init' first.")
        return

    click.echo("Profiles:")
    for profile in profiles:
        marker = " *" if profile == active else ""
        click.echo(f"  {profile}{marker}")


@click.command()
@click.argument("name")
def switch(name: str):
    """Switch to a profile (persistent)."""
    from env_pro.core.profile import set_active_profile, list_profiles

    profiles = list_profiles()
    if name not in profiles:
        raise click.ClickException(f"Profile '{name}' not found. Available: {', '.join(profiles)}")

    set_active_profile(name)
    click.echo(f"Switched to profile '{name}'")


@click.command()
@click.argument("name")
def use(name: str):
    """Use a profile for current session."""
    from env_pro.core.profile import list_profiles

    profiles = list_profiles()
    if name not in profiles:
        raise click.ClickException(f"Profile '{name}' not found. Available: {', '.join(profiles)}")

    click.echo(f"Profile '{name}' will be used. Set ENV_PRO_PROFILE env var to persist.")


@click.command()
@click.argument("name")
def delete(name: str):
    """Delete a profile."""
    from env_pro.core.profile import delete_profile, list_profiles

    profiles = list_profiles()
    if name not in profiles:
        raise click.ClickException(f"Profile '{name}' not found")

    if name == "default":
        raise click.ClickException("Cannot delete 'default' profile")

    delete_profile(name)
    click.echo(f"Deleted profile '{name}'")


@click.command()
@click.argument("other", required=False)
def diff(other: Optional[str]):
    """Compare current profile with another."""
    from env_pro.core.profile import (
        get_active_profile, get_profile_vars, list_profiles
    )

    current = get_active_profile() or "default"
    other = other or click.prompt("Compare with profile")

    profiles = list_profiles()
    if other not in profiles:
        raise click.ClickException(f"Profile '{other}' not found")

    current_vars = get_profile_vars(current)
    other_vars = get_profile_vars(other)

    all_keys = set(current_vars.keys()) | set(other_vars.keys())

    click.echo(f"Diff: {current} vs {other}")
    click.echo("-" * 40)

    for key in sorted(all_keys):
        current_val = current_vars.get(key, "<not set>")
        other_val = other_vars.get(key, "<not set>")

        if current_val != other_val:
            click.echo(f"  {key}:")
            click.echo(f"    {current}: {current_val[:50]}{'...' if len(current_val) > 50 else ''}")
            click.echo(f"    {other}: {other_val[:50]}{'...' if len(other_val) > 50 else ''}")