"""Punkt 5: Relative Pfade in der Config sind ein Fehler, keine stille Annahme.

`incoming = "in"` legte das Verzeichnis unter dem WorkingDirectory des
Dienstes an (/opt/pdf-ocr-hotfolder/in) statt dort, wo der Scanner ablegt —
ohne Warnung. Der Dienst schaute dann dauerhaft ins Leere.
"""
from __future__ import annotations

import sys
from pathlib import Path

import pytest

from pdf_ocr_hotfolder.config import ConfigError, load_config

_ABS = {
    "incoming": "/var/lib/pdf-ocr-hotfolder/incoming",
    "outgoing": "/var/lib/pdf-ocr-hotfolder/outgoing",
    "working": "/var/lib/pdf-ocr-hotfolder/working",
    "error": "/var/lib/pdf-ocr-hotfolder/error",
}


def _write(tmp_path: Path, paths: dict[str, str], extra: str = "") -> Path:
    cfg = tmp_path / "config.toml"
    zeilen = "\n".join(f'{k} = "{v}"' for k, v in paths.items())
    cfg.write_text(f"[paths]\n{zeilen}\n{extra}")
    return cfg


@pytest.mark.parametrize("key", list(_ABS))
def test_relative_path_key_is_rejected(tmp_path: Path, key: str) -> None:
    paths = dict(_ABS)
    paths[key] = "in"
    with pytest.raises(ConfigError) as exc:
        load_config(_write(tmp_path, paths))
    msg = str(exc.value)
    assert key in msg
    assert "absolut" in msg.lower()
    assert "WorkingDirectory" in msg


def test_dot_relative_path_is_rejected(tmp_path: Path) -> None:
    """Auch './scans' und '../scans' sind relativ."""
    paths = dict(_ABS, incoming="./scans")
    with pytest.raises(ConfigError, match="incoming"):
        load_config(_write(tmp_path, paths))


def test_absolute_paths_load(tmp_path: Path) -> None:
    cfg = load_config(_write(tmp_path, _ABS))
    assert cfg.paths.incoming == Path(_ABS["incoming"])


def test_relative_archive_dir_is_rejected(tmp_path: Path) -> None:
    cfg = _write(tmp_path, _ABS,
                 '\n[output]\noriginal_on_success = "archive"\n'
                 'archive_dir = "archiv"\n')
    with pytest.raises(ConfigError) as exc:
        load_config(cfg)
    assert "archive_dir" in str(exc.value)


def test_relative_upload_target_is_rejected(tmp_path: Path) -> None:
    cfg = _write(tmp_path, _ABS,
                 '\n[upload.folder]\nenabled = true\ntarget = "fertig"\n')
    with pytest.raises(ConfigError) as exc:
        load_config(cfg)
    assert "target" in str(exc.value)


def test_empty_archive_dir_and_target_are_fine(tmp_path: Path) -> None:
    """Leer heißt 'nicht gesetzt' und bleibt erlaubt (das ist der Default)."""
    cfg = load_config(_write(tmp_path, _ABS,
                             '\n[output]\narchive_dir = ""\n'
                             '\n[upload.folder]\ntarget = ""\n'))
    assert cfg.output.archive_dir == ""
    assert cfg.folder.target == ""


def test_absolute_archive_dir_and_target_load(tmp_path: Path) -> None:
    cfg = load_config(_write(tmp_path, _ABS,
                             '\n[output]\narchive_dir = "/srv/archiv"\n'
                             '\n[upload.folder]\ntarget = "/srv/fertig"\n'))
    assert cfg.output.archive_dir == "/srv/archiv"
    assert cfg.folder.target == "/srv/fertig"


# ---------------- CLI ----------------

def test_main_returns_2_on_relative_path(tmp_path: Path, monkeypatch, capsys) -> None:
    cfg = _write(tmp_path, dict(_ABS, incoming="in"))
    monkeypatch.setattr(sys, "argv",
                        ["pdf-ocr-hotfolder", "--config", str(cfg), "--once"])
    from pdf_ocr_hotfolder.__main__ import main
    assert main() == 2
    err = capsys.readouterr().err
    assert "FEHLER" in err
    assert "incoming" in err


def test_check_config_returns_2_on_relative_path(tmp_path: Path, monkeypatch,
                                                 capsys) -> None:
    from pdf_ocr_hotfolder.__main__ import CHECK_ERROR, main

    cfg = _write(tmp_path, dict(_ABS, outgoing="raus"))
    monkeypatch.setattr(sys, "argv",
                        ["pdf-ocr-hotfolder", "--config", str(cfg),
                         "--check-config"])
    assert main() == CHECK_ERROR
    assert "outgoing" in capsys.readouterr().err