"""Root typer application — command registration and banner."""

from __future__ import annotations

from typing import Annotated, Optional

import typer

from freepik_cli import __version__
from freepik_cli.commands import config as config_cmd
from freepik_cli.commands.analyze import describe_image
from freepik_cli.commands.edit import expand_image, relight_image, style_transfer
from freepik_cli.commands.generate import generate_icon, generate_image, generate_video
from freepik_cli.commands.upscale import upscale_image, upscale_video
from freepik_cli.utils.console import console, print_banner
from freepik_cli.utils.config import FreepikConfig

app = typer.Typer(
    name="freepik",
    help=(
        "[bold magenta]Freepik AI[/bold magenta] — generate images, videos, and more "
        "from the command line.\n\n"
        "[dim]Set your API key:[/dim]  [cyan]export FREEPIK_API_KEY=your_key[/cyan]\n"
        "[dim]Get an API key:[/dim]   https://www.freepik.com/api"
    ),
    rich_markup_mode="rich",
    no_args_is_help=True,
    pretty_exceptions_enable=True,
    pretty_exceptions_show_locals=False,
    pretty_exceptions_short=True,
    add_completion=True,
)

# ── Flat commands ──────────────────────────────────────────────────────────────

app.command(
    "generate-image",
    help="[bold]Generate an image[/bold] from a text prompt using AI models.",
    rich_help_panel="Generation",
)(generate_image)

app.command(
    "generate-video",
    help="[bold]Generate a video[/bold] by animating a source image using AI.",
    rich_help_panel="Generation",
)(generate_video)

app.command(
    "generate-icon",
    help="[bold]Generate an icon[/bold] from a text prompt in various styles.",
    rich_help_panel="Generation",
)(generate_icon)

app.command(
    "upscale-image",
    help="[bold]Upscale and enhance[/bold] an image using AI.",
    rich_help_panel="Enhancement",
)(upscale_image)

app.command(
    "upscale-video",
    help="[bold]Upscale a video[/bold] to higher resolution using AI.",
    rich_help_panel="Enhancement",
)(upscale_video)

app.command(
    "expand-image",
    help="[bold]Expand an image[/bold] by adding new content around its edges (outpainting).",
    rich_help_panel="Editing",
)(expand_image)

app.command(
    "relight",
    help="[bold]Relight an image[/bold] using AI-controlled lighting. [dim](Premium)[/dim]",
    rich_help_panel="Editing",
)(relight_image)

app.command(
    "style-transfer",
    help="[bold]Apply an artistic style[/bold] from one image onto another. [dim](Premium)[/dim]",
    rich_help_panel="Editing",
)(style_transfer)

app.command(
    "describe-image",
    help="[bold]Describe an image[/bold] and generate a text prompt from it.",
    rich_help_panel="Analysis",
)(describe_image)

# ── Nested config sub-app ──────────────────────────────────────────────────────

app.add_typer(
    config_cmd.app,
    rich_help_panel="Settings",
)


# ── Root callback ──────────────────────────────────────────────────────────────

@app.callback(invoke_without_command=True)
def main(
    ctx: typer.Context,
    version: Annotated[
        bool,
        typer.Option("--version", "-v", help="Show version and exit", is_eager=True),
    ] = False,
) -> None:
    """
    [bold magenta]Freepik AI[/bold magenta] — generate images, videos, icons, and more.
    """
    cfg = FreepikConfig.load()

    if version:
        print_banner()
        console.print(f"[dim]Version:[/dim] [bold]{__version__}[/bold]\n")
        raise typer.Exit()

    if ctx.invoked_subcommand is None:
        if cfg.show_banner:
            print_banner()
        console.print(ctx.get_help())
    elif cfg.show_banner and ctx.invoked_subcommand not in ("config",):
        print_banner()