#!/usr/bin/env python3
"""CLI adapter for the reusable Meeting Lab MVP orchestration API."""

from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path
from typing import Any

REPO_ROOT = Path(__file__).resolve().parents[1]
if str(REPO_ROOT) not in sys.path:
    sys.path.insert(0, str(REPO_ROOT))

from src.meeting_lab.llm.ollama import DEFAULT_ENDPOINT  # noqa: E402
from src.meeting_lab.models.meeting_context import MeetingContext  # noqa: E402
from src.meeting_lab.orchestration.mvp import (  # noqa: E402
    DEFAULT_DIARIZATION_MODEL,
    DEFAULT_MODEL,
    DEFAULT_OUTPUT_ROOT,
    DEFAULT_SAFE_INPUT_TOKEN_BUDGET,
    MvpMeetingConfig,
    create_unique_run_dir,
    run_mvp_meeting,
)
from src.meeting_lab.progress import ProgressSink  # noqa: E402


def parse_args(argv: list[str] | None = None) -> argparse.Namespace:
    parser = argparse.ArgumentParser(
        description="Transcribe one meeting and generate one direct protocol."
    )
    parser.add_argument("audio_file", type=Path)
    parser.add_argument("--whisper-model", type=Path, required=True)
    parser.add_argument("--whisper-executable", default="whisper-cli")
    parser.add_argument("--ffmpeg-executable", default="ffmpeg")
    parser.add_argument(
        "--audio-normalization",
        action=argparse.BooleanOptionalAction,
        default=True,
        help=(
            "Enable FFmpeg loudness normalization during canonical audio preparation "
            "(default: enabled)."
        ),
    )
    parser.add_argument("--context", type=Path)
    parser.add_argument("--output-root", type=Path, default=DEFAULT_OUTPUT_ROOT)
    parser.add_argument("--language", default="de")
    parser.add_argument(
        "--threads",
        default="auto",
        help="Thread count or 'auto' for physical CPU cores (default: auto).",
    )
    parser.add_argument("--model", default=DEFAULT_MODEL)
    parser.add_argument("--ollama-endpoint", default=DEFAULT_ENDPOINT)
    parser.add_argument(
        "--protocol-safe-input-token-budget",
        type=int,
        default=DEFAULT_SAFE_INPUT_TOKEN_BUDGET,
        help="Conservative estimated prompt-token limit before any Ollama request.",
    )
    parser.add_argument(
        "--diarization",
        choices=("auto", "gpu", "cpu", "off"),
        default="off",
        help="Optional Community-1 diarization device mode (default: off).",
    )
    parser.add_argument(
        "--diarization-runtime",
        choices=("native", "container"),
        default="native",
        help="Run pyannote in this Python environment or an explicit container.",
    )
    parser.add_argument(
        "--diarization-container-image",
        help="Container image required with --diarization-runtime container.",
    )
    parser.add_argument(
        "--diarization-container-arg",
        action="append",
        default=[],
        help="Additional docker argument; repeat and use = for values beginning with --.",
    )
    return parser.parse_args(argv)


def config_from_args(args: argparse.Namespace) -> MvpMeetingConfig:
    return MvpMeetingConfig(
        audio_file=args.audio_file,
        whisper_model=args.whisper_model,
        whisper_executable=args.whisper_executable,
        ffmpeg_executable=args.ffmpeg_executable,
        audio_normalization=args.audio_normalization,
        context_file=args.context,
        output_root=args.output_root,
        language=args.language,
        threads=args.threads,
        model=args.model,
        ollama_endpoint=args.ollama_endpoint,
        protocol_safe_input_token_budget=args.protocol_safe_input_token_budget,
        diarization=args.diarization,
        diarization_runtime=args.diarization_runtime,
        diarization_container_image=args.diarization_container_image,
        diarization_container_args=tuple(args.diarization_container_arg),
    )


def run(
    args: argparse.Namespace,
    *,
    context_override: MeetingContext | dict[str, Any] | None = None,
    progress_sink: ProgressSink | None = None,
) -> tuple[int, Path | None, Path | None]:
    """Compatibility wrapper for existing Python callers of the CLI module."""
    result = run_mvp_meeting(
        config_from_args(args),
        meeting_context=context_override,
        progress_sink=progress_sink,
    )
    return result.exit_code, result.run_dir, result.protocol_path


def main(argv: list[str] | None = None) -> int:
    args = parse_args(argv)
    if args.diarization == "off":
        print("Diarization: disabled")
    else:
        print(
            f"Diarization: enabled; backend=pyannote.audio; "
            f"model={DEFAULT_DIARIZATION_MODEL}; requested_device={args.diarization}; "
            f"runtime={args.diarization_runtime}"
        )
    code, run_dir, protocol_path = run(args)
    if run_dir is not None and args.diarization != "off":
        metadata_path = run_dir / "diarization" / "metadata.json"
        if metadata_path.is_file():
            details = json.loads(metadata_path.read_text(encoding="utf-8"))
            print(
                f"Diarization result: device={details.get('actual_device')}; "
                f"device_name={details.get('device_name') or 'n/a'}; "
                f"runtime={details.get('runtime_seconds'):.3f}s; "
                f"speakers={details.get('speaker_count')}; artifacts={metadata_path.parent}"
            )
    if protocol_path is not None:
        print(protocol_path)
    return code


if __name__ == "__main__":
    raise SystemExit(main())