from __future__ import annotations

import shutil
from pathlib import Path

from app.pipeline.service import run_batch


class FakeSamba:
    def __init__(self, root: Path) -> None:
        self.root = root

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc, tb):  # noqa: ANN001
        return False

    def _to_local(self, remote_path: str) -> Path:
        cleaned = remote_path.replace("/", "\\").strip("\\")
        return self.root / Path(cleaned)

    def path_exists(self, path: str) -> bool:
        return self._to_local(path).exists()

    def listdir(self, path: str) -> list[str]:
        target = self._to_local(path)
        if not target.exists():
            return []
        return [item.name for item in target.iterdir()]

    def is_file(self, path: str) -> bool:
        return self._to_local(path).is_file()

    def mkdir(self, path: str, parent: bool = False) -> None:
        target = self._to_local(path)
        if parent:
            target.mkdir(parents=True, exist_ok=True)
        else:
            target.mkdir(exist_ok=True)

    def copy(self, path_from: str, path_to: str, replace: bool = False) -> None:
        source = self._to_local(path_from)
        target = self._to_local(path_to)
        target.parent.mkdir(parents=True, exist_ok=True)
        if target.exists() and not replace:
            raise FileExistsError(path_to)
        shutil.copy2(source, target)

    def delete(self, path: str) -> None:
        target = self._to_local(path)
        if target.exists():
            target.unlink()

    def open(self, path: str, mode: str):
        return self._to_local(path).open(mode)

    def upload(self, path_from: str, path_to: str) -> None:
        source = Path(path_from)
        target = self._to_local(path_to)
        target.parent.mkdir(parents=True, exist_ok=True)
        shutil.copy2(source, target)


class FakeSambaDeleteDeniedForXml(FakeSamba):
    def delete(self, path: str) -> None:
        normalized = path.replace("/", "\\").lower()
        if normalized.endswith(".xml") and "\\test\\" in normalized:
            raise PermissionError("STATUS_ACCESS_DENIED")
        super().delete(path)


def _valid_xml() -> str:
    return """<?xml version="1.0" encoding="UTF-8"?>
<СообщОперКО xmlns="urn:test">
  <СлужЧасть><ИдФайл>ID1</ИдФайл></СлужЧасть>
  <ИнформЧасть>
    <СведКО>
      <Операция>
        <ИдентификаторЗаписи>OP1</ИдентификаторЗаписи>
        <УчастникОп><Тип>01</Тип></УчастникОп>
      </Операция>
    </СведКО>
  </ИнформЧасть>
</СообщОперКО>
"""


def test_run_batch_smoke_and_idempotency(tmp_path: Path, monkeypatch) -> None:
    samba = FakeSamba(tmp_path)
    in_dir_local = tmp_path / "Exchange" / "SMBDEMO" / "test"
    in_dir_local.mkdir(parents=True)
    (in_dir_local / "SKO115FZ_01_123456789_20260616_X00001.xml").write_text(
        _valid_xml(),
        encoding="utf-8",
    )

    from app.pipeline import service

    monkeypatch.setattr(
        service, "connect_samba", lambda smb_base_path, user_params: samba
    )

    first = run_batch(
        smb_base_path="//test-server/share",
        input_dir="Exchange\\SMBDEMO\\test",
        samba_user="user",
        samba_password="pass",
        launcher="tester",
    )
    assert first.status in {"success", "partial"}
    assert first.protocol_path
    assert first.report_path

    second = run_batch(
        smb_base_path="//test-server/share",
        input_dir="Exchange\\SMBDEMO\\test",
        samba_user="user",
        samba_password="pass",
        launcher="tester",
    )
    assert second.status == "success"
    assert second.processed == 0


def test_run_batch_success_when_delete_denied_after_copy(
    tmp_path: Path, monkeypatch
) -> None:
    samba = FakeSambaDeleteDeniedForXml(tmp_path)
    in_dir_local = tmp_path / "Exchange" / "SMBDEMO" / "test"
    in_dir_local.mkdir(parents=True)
    file_name = "SKO115FZ_01_123456789_20260616_X00001.xml"
    (in_dir_local / file_name).write_text(_valid_xml(), encoding="utf-8")

    from app.pipeline import service

    monkeypatch.setattr(
        service, "connect_samba", lambda smb_base_path, user_params: samba
    )

    result = run_batch(
        smb_base_path="//test-server/share",
        input_dir="Exchange\\SMBDEMO\\test",
        samba_user="user",
        samba_password="pass",
        launcher="tester",
    )

    assert result.status == "success"
    assert result.processed == 1