"""Tests unitaires pour pipeline.zones_config."""
from __future__ import annotations

import json

import pytest

from pipeline.zones_config import (
    DEFAULTS,
    get_zone,
    load_config,
    save_config,
)


class TestLoadConfig:
    def test_fichier_absent_retourne_defaults(self, tmp_path):
        cfg = load_config(tmp_path / "inexistant.json")
        assert cfg == DEFAULTS

    def test_charge_depuis_fichier(self, tmp_path):
        path = tmp_path / "zones.json"
        custom = {
            "recueil": {
                "codage_reco": {"x1": 0.5, "y1": 0.1, "x2": 0.9, "y2": 0.4,
                                "description": "test"},
            },
        }
        path.write_text(json.dumps(custom))
        cfg = load_config(path)
        assert cfg["recueil"]["codage_reco"]["x1"] == 0.5

    def test_merge_avec_defaults(self, tmp_path):
        """Les zones non définies dans le fichier tombent en défaut."""
        path = tmp_path / "zones.json"
        partial = {
            "recueil": {"codage_reco": {"x1": 0.1, "y1": 0.2, "x2": 0.3, "y2": 0.4}},
        }
        path.write_text(json.dumps(partial))
        cfg = load_config(path)
        # User override appliqué
        assert cfg["recueil"]["codage_reco"]["x1"] == 0.1
        # Default gardé pour l'autre zone
        assert cfg["recueil"]["accord_checkbox"] == DEFAULTS["recueil"]["accord_checkbox"]

    def test_json_corrompu_retombe_sur_defaults(self, tmp_path):
        path = tmp_path / "corrupt.json"
        path.write_text("{ not valid json [")
        cfg = load_config(path)
        assert cfg == DEFAULTS


class TestSaveConfig:
    def test_save_puis_load_round_trip(self, tmp_path):
        path = tmp_path / "zones.json"
        original = {
            "recueil": {
                "codage_reco": {"x1": 0.11, "y1": 0.22, "x2": 0.33, "y2": 0.44,
                                "description": "abc"},
            },
        }
        save_config(original, path)
        reloaded = load_config(path)
        assert reloaded["recueil"]["codage_reco"]["x1"] == 0.11
        assert reloaded["recueil"]["codage_reco"]["description"] == "abc"


class TestGetZone:
    def test_zone_existante(self):
        z = get_zone("recueil", "codage_reco")
        assert isinstance(z, tuple)
        assert len(z) == 4
        assert all(isinstance(v, float) for v in z)

    def test_zone_inconnue_retourne_none(self):
        assert get_zone("recueil", "zone_qui_nexiste_pas") is None
        assert get_zone("page_fantaisiste", "whatever") is None

    def test_config_explicite(self):
        cfg = {
            "recueil": {
                "my_zone": {"x1": 0.0, "y1": 0.0, "x2": 1.0, "y2": 1.0},
            },
        }
        assert get_zone("recueil", "my_zone", config=cfg) == (0.0, 0.0, 1.0, 1.0)