"""The one-time move of an older instance's panels file into devices."""

import json
import subprocess
from pathlib import Path

from fluksio.flow.devices import DeviceStore
from fluksio.flow.store import FlowStore


def test_panels_move_into_devices_once(tmp_path: Path) -> None:
    flows = FlowStore(tmp_path / "flows")
    panels = tmp_path / "panels.json"
    panels.write_text(
        json.dumps(
            {
                "panels": [
                    {"id": "hall", "title": "Hall", "dashboards": ["home"], "nonce": 2},
                    {"id": "knob", "touch": True, "io": [], "nonce": 0},
                ],
                "version": 7,
            }
        )
    )
    store = DeviceStore(flows, tmp_path / "devices.json")
    store.migrate(panels)

    assert not panels.exists()
    assert (tmp_path / "panels.json.migrated").exists()
    hall = store.find("hall")
    assert hall is not None and hall.dashboards == ["home"] and hall.version == 1
    assert store.find("knob").touch is True  # type: ignore[union-attr]
    # The nonce stays outside git, so a credential minted at it still stands.
    assert store.nonce("hall") == 2
    assert "nonce" not in (flows.root / "_devices" / "hall.json").read_text()
    log = subprocess.run(
        ["git", "-C", str(flows.root), "log", "--format=%s"],
        capture_output=True,
        text=True,
    ).stdout
    assert log.splitlines()[0] == "Migrate panels to devices"
    # Nothing in `_devices` is taken for a flow.
    assert flows.list_flows() == []

    # A second start finds nothing to do, and a panels file restored from a
    # backup does not lower a nonce an unpair has raised since.
    store.bump("hall")
    panels.write_text((tmp_path / "panels.json.migrated").read_text())
    store.migrate(panels)
    assert store.nonce("hall") == 3
    assert (
        log
        == subprocess.run(
            ["git", "-C", str(flows.root), "log", "--format=%s"],
            capture_output=True,
            text=True,
        ).stdout
    )