"""Tests for spruce.paths — pure path helpers, no network."""

from pathlib import Path

import pytest
from spruce.paths import _extract_date, machine_dir_name, mosaic_dest, tile_dest


MACHINE = {"label": "BW3-20 [AMR-26]", "machine_id": "26"}
SCAN_META = {"scan_time": "2024-07-29 05:00", "nx": 103, "ny": 328}
TILE = {"scan_id": 158374, "row_index": 0, "col_index": 2}


# ---------------------------------------------------------------------------
# machine_dir_name
# ---------------------------------------------------------------------------


def test_machine_dir_name_sanitises_brackets():
    name = machine_dir_name({"label": "BW3-20 [AMR-26]"})
    # Brackets and spaces replaced by underscores
    assert "[" not in name
    assert "]" not in name
    assert " " not in name


def test_machine_dir_name_no_leading_trailing_underscores():
    name = machine_dir_name({"label": "BW3-20 [AMR-26]"})
    assert not name.startswith("_")
    assert not name.endswith("_")


def test_machine_dir_name_stable():
    # Same label should always produce the same dir name
    assert machine_dir_name(MACHINE) == machine_dir_name(MACHINE)


# ---------------------------------------------------------------------------
# _extract_date
# ---------------------------------------------------------------------------


def test_extract_date_standard():
    assert _extract_date("2024-07-29 05:00:00") == "2024-07-29"


def test_extract_date_date_only():
    assert _extract_date("2024-07-29") == "2024-07-29"


def test_extract_date_no_date():
    assert _extract_date("no date here") == "unknown"


def test_extract_date_empty():
    assert _extract_date("") == "unknown"


# ---------------------------------------------------------------------------
# tile_dest
# ---------------------------------------------------------------------------


def test_tile_dest_structure(tmp_path):
    dest = tile_dest(tmp_path, MACHINE, SCAN_META, TILE)
    parts = dest.parts
    assert str(TILE["scan_id"]) in parts
    assert "tiles" in parts
    assert dest.suffix == ".jpg"
    assert "tile_r" in dest.name


def test_tile_dest_zero_padded(tmp_path):
    # ny=328 → row index needs 3 digits; nx=103 → col index needs 3 digits
    dest = tile_dest(tmp_path, MACHINE, SCAN_META, TILE)
    # row_index=0 padded to 3 digits (max is 327) → "000"
    assert "tile_r000_c" in dest.name


def test_tile_dest_contains_date(tmp_path):
    dest = tile_dest(tmp_path, MACHINE, SCAN_META, TILE)
    assert "2024-07-29" in str(dest)


# ---------------------------------------------------------------------------
# mosaic_dest
# ---------------------------------------------------------------------------


def test_mosaic_dest_filename(tmp_path):
    dest = mosaic_dest(tmp_path, MACHINE, SCAN_META, 158374)
    assert dest.name == "mosaic.jpg"


def test_mosaic_dest_contains_scan_id(tmp_path):
    dest = mosaic_dest(tmp_path, MACHINE, SCAN_META, 158374)
    assert "158374" in str(dest)


def test_mosaic_dest_contains_date(tmp_path):
    dest = mosaic_dest(tmp_path, MACHINE, SCAN_META, 158374)
    assert "2024-07-29" in str(dest)