import argparse
import sys
from collections.abc import Sequence
from pathlib import Path

from config import EXPORT_DIR
from copienator import (
    EvaluationWorkspace,
    ExitCode,
    evaluation_parser,
    execute,
    workspace_from_args,
)
from platform_utils import replace_with_link_or_copy


def export_directory(
    workspace: EvaluationWorkspace,
    source_dir_name: str,
) -> ExitCode:
    workspace.require_directories(source_dir_name)
    source_dir = workspace.root / source_dir_name
    sync_dir = Path(EXPORT_DIR).expanduser() / workspace.name
    sync_dir.mkdir(parents=True, exist_ok=True)

    subdirs = [directory for directory in source_dir.iterdir() if directory.is_dir()]
    if source_dir_name == "BGnot" and subdirs:
        all_start_with_copie = all(directory.name.startswith("Copie") for directory in subdirs)
        if not all_start_with_copie:
            subdirs = [directory for directory in subdirs if not directory.name.startswith("Copie")]

    missing_outputs = 0
    for subdir in subdirs:
        concat_file = subdir / "Concat.pdf"
        if not concat_file.is_file():
            print(f"Warning: file not found: {concat_file}", file=sys.stderr)
            missing_outputs += 1
            continue
        destination = sync_dir / f"{subdir.name}.pdf"
        method = replace_with_link_or_copy(concat_file, destination, prefer="hardlink")
        print(f"Exported: {destination} ({method})")
    return ExitCode.PARTIAL if missing_outputs else ExitCode.SUCCESS


def build_parser() -> argparse.ArgumentParser:
    parser = evaluation_parser("Export annotated PDFs to the tablet directory.")
    parser.add_argument("--refaire", action="store_true", help="Process only copies/labels defined in refaire.json")
    return parser


def run(workspace: EvaluationWorkspace, *, refaire: bool = False) -> ExitCode:
    return export_directory(workspace, "BRnot" if refaire else "BGnot")


def main(argv: Sequence[str] | None = None) -> int:
    parser = build_parser()
    return execute(
        parser,
        argv,
        lambda args: run(workspace_from_args(args), refaire=args.refaire),
    )


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