import subprocess
import sys
from pathlib import Path
from unittest.mock import MagicMock

import pytest

import syncvito.autostart as autostart
from syncvito.autostart import generate_task_xml, set_autostart


def test_generate_task_xml_structure() -> None:
    cmd = Path("C:/Program Files/SyncVito/SyncVito.exe")
    args = "--minimized"
    xml = generate_task_xml(cmd, args)

    assert '<?xml version="1.0" encoding="UTF-16"?>' in xml
    assert "<RunLevel>HighestAvailable</RunLevel>" in xml
    assert "<LogonType>InteractiveToken</LogonType>" in xml
    assert "<Delay>PT5S</Delay>" in xml
    assert "<DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>" in xml
    assert "<StopIfGoingOnBatteries>false</StopIfGoingOnBatteries>" in xml
    assert "<ExecutionTimeLimit>PT0S</ExecutionTimeLimit>" in xml
    assert "<Command>C:\\Program Files\\SyncVito\\SyncVito.exe</Command>" in xml
    assert "<Arguments>--minimized</Arguments>" in xml


def test_set_autostart_non_windows(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(autostart.os, "name", "posix")
    assert not set_autostart(True)
    assert not set_autostart(False)


def test_set_autostart_enable_scheduled_task_success(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(autostart.os, "name", "nt")
    monkeypatch.setattr(sys, "frozen", True, raising=False)
    monkeypatch.setattr(sys, "executable", r"C:\Program Files\SyncVito\SyncVito.exe")

    mock_run = MagicMock(return_value=subprocess.CompletedProcess(args=[], returncode=0))
    monkeypatch.setattr(autostart, "_run_schtasks", mock_run)

    deleted_run_key = False

    def mock_delete_run_key() -> None:
        nonlocal deleted_run_key
        deleted_run_key = True

    monkeypatch.setattr(autostart, "_delete_run_key_entry", mock_delete_run_key)

    result = set_autostart(True)
    assert result is True
    assert mock_run.called
    create_call_args = mock_run.call_args[0][0]
    assert create_call_args[0] == "/create"
    assert create_call_args[1] == "/tn"
    assert create_call_args[2] == "SyncVito"
    assert deleted_run_key is True


def test_set_autostart_enable_fallback_registry(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(autostart.os, "name", "nt")
    monkeypatch.setattr(sys, "frozen", True, raising=False)
    monkeypatch.setattr(sys, "executable", r"C:\Program Files\SyncVito\SyncVito.exe")

    # schtasks fails (e.g. non-elevated prompt)
    mock_run = MagicMock(return_value=subprocess.CompletedProcess(args=[], returncode=1))
    monkeypatch.setattr(autostart, "_run_schtasks", mock_run)

    registry_command = None

    def mock_set_run_key(cmd: str) -> None:
        nonlocal registry_command
        registry_command = cmd

    monkeypatch.setattr(autostart, "_set_run_key_entry", mock_set_run_key)

    result = set_autostart(True)
    assert result is False
    assert registry_command == r'"C:\Program Files\SyncVito\SyncVito.exe" --minimized'


def test_set_autostart_disable(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(autostart.os, "name", "nt")

    mock_run = MagicMock(return_value=subprocess.CompletedProcess(args=[], returncode=0))
    monkeypatch.setattr(autostart, "_run_schtasks", mock_run)

    deleted_run_key = False

    def mock_delete_run_key() -> None:
        nonlocal deleted_run_key
        deleted_run_key = True

    monkeypatch.setattr(autostart, "_delete_run_key_entry", mock_delete_run_key)

    result = set_autostart(False)
    assert result is True
    assert mock_run.called
    delete_call_args = mock_run.call_args[0][0]
    assert delete_call_args == ["/delete", "/tn", "SyncVito", "/f"]
    assert deleted_run_key is True