"""Central Rich output helpers.

Opinionated: `rich` is a required dependency.

This module centralizes Console instances so tables/panels render consistently and
so callers can choose stdout vs stderr explicitly (important for pipeline-safe
output).
"""

from __future__ import annotations

import contextlib
import sys
from typing import Any, Iterator, Sequence, TextIO

from rich.console import Console
from rich.panel import Panel
from rich.text import Text

# Configure Rich pretty-printing to avoid truncating long strings (hashes/paths).
# This is version-safe: older Rich versions may not support the max_* arguments.
try:
    from rich.pretty import install as _pretty_install

    try:
        _pretty_install(max_string=100_000, max_length=100_000)
    except TypeError:
        _pretty_install()
except Exception:
    pass

_STDOUT_CONSOLE = Console(file=sys.stdout)
_STDERR_CONSOLE = Console(file=sys.stderr)


def stdout_console() -> Console:
    return _STDOUT_CONSOLE


def stderr_console() -> Console:
    return _STDERR_CONSOLE


def console_for(file: TextIO | None) -> Console:
    if file is None or file is sys.stdout:
        return _STDOUT_CONSOLE
    if file is sys.stderr:
        return _STDERR_CONSOLE
    return Console(file=file)


def rprint(renderable: Any = "", *, file: TextIO | None = None) -> None:
    console_for(file).print(renderable)


@contextlib.contextmanager
def capture_rich_output(*, stdout: TextIO, stderr: TextIO) -> Iterator[None]:
    """Temporarily redirect Rich output helpers to provided streams.

    Note: `stdout_console()` / `stderr_console()` use global Console instances,
    so `contextlib.redirect_stdout` alone will not capture Rich output.
    """

    global _STDOUT_CONSOLE, _STDERR_CONSOLE

    previous_stdout = _STDOUT_CONSOLE
    previous_stderr = _STDERR_CONSOLE
    try:
        _STDOUT_CONSOLE = Console(file=stdout)
        _STDERR_CONSOLE = Console(file=stderr)
        yield
    finally:
        _STDOUT_CONSOLE = previous_stdout
        _STDERR_CONSOLE = previous_stderr


def show_provider_config_panel(
    provider_name: str,
    keys: Sequence[str] | None = None,
    *,
    config_hint: str = "config.conf"
) -> None:
    """Show a Rich panel explaining how to configure a provider."""

    normalized = str(provider_name or "").strip() or "provider"
    pre = Text("Add this to your config", style="bold")
    footer = Text(
        f"Place this block in {config_hint} or config.d/*.conf",
        style="dim"
    )
    body = Text()
    body.append(f"[provider={normalized}]\n", style="bold cyan")
    for key in keys or []:
        body.append(f'{key}=""\n', style="yellow")

    stderr_console().print(pre)
    stderr_console().print(
        Panel(
            body,
            title=f"{normalized} configuration",
            expand=False
        )
    )
    stderr_console().print(footer)