#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
conftest.py - pytest Fixtures fuer SSG_LIB Tests.

Stellt gemeinsame Fixtures bereit:
- Pfade zu testdata/, output/, reference/
- Laden von JSON-Testdefinitionen und -Ergebnissen
- Laden von DXF-Dateien mit ezdxf
"""

import json
import os
import pytest
import ezdxf


def _tests_dir():
    return os.getenv("DXFM_TESTS", os.path.dirname(os.path.abspath(__file__)))


def _testdata_dir():
    return os.getenv("DXFM_TESTDATA", os.path.join(_tests_dir(), "testdata"))


def _output_dir():
    return os.getenv("DXFM_TESTOUT", os.path.join(_tests_dir(), "output"))


def _reference_dir():
    return os.getenv("DXFM_TESTREF", os.path.join(_tests_dir(), "reference"))


def _load_json(path):
    with open(path, "r", encoding="utf-8") as f:
        return json.load(f)


# --- Omniflo Fixtures ---

@pytest.fixture
def omniflo_testdata():
    """Laedt die Omniflo-Testdefinitionen aus testdata/omniflo_tests.json."""
    path = os.path.join(_testdata_dir(), "omniflo_tests.json")
    return _load_json(path)


@pytest.fixture
def omniflo_csv():
    """Laedt den Inhalt der omniflo_export.csv aus output/."""
    import csv as _csv
    path = os.path.join(_output_dir(), "omniflo_export.csv")
    if not os.path.exists(path):
        pytest.skip(
            "omniflo_export.csv nicht vorhanden - "
            "TEST_OMNIFLO_EXPORT in BricsCAD ausfuehren"
        )
    rows = []
    with open(path, "r", encoding="utf-8") as f:
        reader = _csv.reader(f, delimiter=";")
        header = next(reader)
        for row in reader:
            rows.append(row)
    return {"header": header, "rows": rows}


# --- Kreisel Fixtures ---

@pytest.fixture
def kreisel_testdata():
    """Laedt die Kreisel-Testdefinitionen aus testdata/kreisel_tests.json."""
    path = os.path.join(_testdata_dir(), "kreisel_tests.json")
    return _load_json(path)


@pytest.fixture
def kreisel_results():
    """Laedt die Kreisel-Ergebnisse aus output/kreisel_results.json."""
    path = os.path.join(_output_dir(), "kreisel_results.json")
    if not os.path.exists(path):
        pytest.skip("kreisel_results.json nicht vorhanden - TEST_KREISEL in BricsCAD ausfuehren")
    data = _load_json(path)
    if not data:
        pytest.skip("kreisel_results.json ist leer - TEST_KREISEL in BricsCAD ausfuehren")
    return data


@pytest.fixture
def kreisel_dxf():
    """Laedt die erzeugte Kreisel-DXF aus output/kreisel_tests.dxf."""
    path = os.path.join(_output_dir(), "kreisel_tests.dxf")
    if not os.path.exists(path):
        pytest.skip("kreisel_tests.dxf nicht vorhanden - TESTRUN in BricsCAD ausfuehren")
    return ezdxf.readfile(path)


@pytest.fixture
def kreisel_ref_dxf():
    """Laedt die Referenz-DXF aus reference/kreisel_ref.dxf."""
    path = os.path.join(_reference_dir(), "kreisel_ref.dxf")
    if not os.path.exists(path):
        pytest.skip("kreisel_ref.dxf nicht vorhanden - Referenz noch nicht erstellt")
    return ezdxf.readfile(path)