import json
from pathlib import Path

import pytest

from app import commands


def test_start_proxmox_backup_parses_upid(monkeypatch):
    expected = "UPID:pve:0001:0002:0003:vzdump:110:root@pam:"

    def fake_run(command, timeout=None):
        assert command[:3] == ["pvesh", "create", "/nodes/pve/vzdump"]
        assert "--output-format" in command
        return commands.CommandResult(stdout=json.dumps(expected), stderr="")

    monkeypatch.setattr(commands, "run", fake_run)

    assert commands.start_proxmox_backup(
        node="pve",
        vmid=110,
        storage="hitachi",
        mode="snapshot",
        compression="zstd",
    ) == expected


def test_start_proxmox_backup_parses_plain_upid(monkeypatch):
    expected = "UPID:pve:0001:0002:0003:vzdump:110:root@pam:"

    monkeypatch.setattr(commands, "run", lambda command, timeout=None: commands.CommandResult(stdout=expected, stderr=""))

    assert commands.start_proxmox_backup(
        node="pve",
        vmid=110,
        storage="hitachi",
        mode="snapshot",
        compression="zstd",
    ) == expected


def test_start_proxmox_backup_parses_upid_after_info_lines(monkeypatch):
    expected = "UPID:pve:0001:0002:0003:vzdump:110:root@pam:"
    output = f"INFO: starting new backup job\nINFO: Backup job finished successfully\n\"{expected}\""

    monkeypatch.setattr(commands, "run", lambda command, timeout=None: commands.CommandResult(stdout=output, stderr=""))

    assert commands.start_proxmox_backup(
        node="pve",
        vmid=110,
        storage="hitachi",
        mode="snapshot",
        compression="zstd",
    ) == expected


def test_list_guests_normalizes_vm_and_lxc(monkeypatch):
    payload = [
        {"vmid": "110", "name": "adguard", "type": "qemu", "node": "pve", "status": "running"},
        {"vmid": "111", "name": "ct", "type": "lxc", "node": "pve", "status": "stopped"},
    ]

    monkeypatch.setattr(commands, "pvesh_json", lambda args: payload)

    guests = commands.list_guests()

    assert guests == [
        {"vmid": 110, "name": "adguard", "type": "vm", "node": "pve", "status": "running"},
        {"vmid": 111, "name": "ct", "type": "lxc", "node": "pve", "status": "stopped"},
    ]


def test_discover_archive_finds_newest_matching_file(tmp_path):
    old_file = tmp_path / "vzdump-qemu-110-2026_01_01-00_00_00.vma.zst"
    new_file = tmp_path / "vzdump-qemu-110-2026_01_01-00_01_00.vma.zst"
    log_file = tmp_path / "vzdump-qemu-110-2026_01_01-00_01_00.log"
    wrong_guest = tmp_path / "vzdump-qemu-999-2026_01_01-00_01_00.vma.zst"
    for path in (old_file, new_file, log_file, wrong_guest):
        path.write_text("data")
    old_file.touch()
    new_file.touch()
    log_file.touch()

    found = commands.discover_archive(str(tmp_path), 110, "vm", "2020-01-01T00:00:00+00:00")

    assert found == new_file


def test_discover_archive_raises_when_missing(tmp_path):
    with pytest.raises(FileNotFoundError):
        commands.discover_archive(str(tmp_path), 110, "vm", "2020-01-01T00:00:00+00:00")


def test_rclone_commands_use_exact_objects(monkeypatch):
    calls = []

    def fake_run(command, timeout=None):
        calls.append(command)
        return commands.CommandResult(stdout="", stderr="")

    monkeypatch.setattr(commands, "run", fake_run)

    commands.rclone_copyto("/usr/bin/rclone", "/tmp/archive.zst", "crypt:backup/archive.zst")
    commands.rclone_delete_file("/usr/bin/rclone", "crypt:backup/archive.zst")
    commands.rclone_rmdir("/usr/bin/rclone", "crypt:backup")

    assert calls == [
        ["/usr/bin/rclone", "copyto", "/tmp/archive.zst", "crypt:backup/archive.zst"],
        ["/usr/bin/rclone", "deletefile", "crypt:backup/archive.zst"],
        ["/usr/bin/rclone", "rmdir", "crypt:backup"],
    ]
    assert all("sync" not in call for call in calls for call in call)