import json
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent.parent / "display"))

import display  # noqa: E402
import render  # noqa: E402


def test_off_mode_says_so_and_shows_nothing_else():
    lines = render.lines({"mode": "off"})
    assert any("Station aus" in l for l in lines)
    assert not any("SSID" in l for l in lines)


def test_migration_shows_detected_lamp():
    lines = render.lines({
        "mode": "migration", "phase": "auto", "served": 3,
        "ssid": "qconnex-firmware",
        "last_seen": {"product_name": "Klyqa GU10 RGB CW/WW", "target": "gu10_rgb",
                      "variant": "prod", "lamp_version": "V1.1.0.1138"},
        "recent": [{"target": "gu10_rgb", "status": "ok", "ts": "2026-09-13T13:04:02Z"}]})
    text = "\n".join(lines)
    assert "MIGRATION" in text
    assert "Klyqa GU10 RGB CW/WW" in text
    assert "V1.1.0.1138" in text
    assert "prod" in text
    assert "13:04" in text


def test_recovery_mode_without_traffic():
    lines = render.lines({"mode": "recovery", "ssid": "ninlight-recovery",
                          "served": 0, "recent": []})
    text = "\n".join(lines)
    assert "RETTUNG" in text
    assert "ninlight-recovery" in text


def test_long_product_name_is_truncated_not_wrapped():
    """Das Panel ist 250 px breit - eine zu lange Zeile darf das Layout nicht sprengen."""
    lines = render.lines({"mode": "migration", "phase": "listen", "served": 0, "recent": [],
                          "ssid": "qconnex-firmware",
                          "last_seen": {"product_name": "X" * 90, "target": "e27_rgb",
                                        "variant": "dev", "lamp_version": "V1"}})
    assert all(len(l) <= render.MAX_COLS for l in lines)


def test_missing_fields_do_not_raise():
    """status.json kann jederzeit halb geschrieben oder aus einer aelteren Version sein."""
    for state in ({}, {"mode": "migration"}, {"mode": "migration", "last_seen": {}}):
        assert render.lines(state)


def test_armed_phase_is_visible():
    lines = render.lines({"mode": "migration", "phase": "armed", "armed_target": "g95_cw",
                          "served": 0, "recent": [], "ssid": "qconnex-firmware"})
    assert "FREIGEGEBEN" in "\n".join(lines)


# --- display.build_state() (Fixrunde 1, I3) ---------------------------------------
#
# Dieselbe Unterscheidung, die im CLI (tools/station/ninlight-station, status_cmd) zweimal
# nachgebessert werden musste: Phase/armed_target kommen aus control.json und sind nur im
# Migrationsmodus gueltig; ein control.json-Rest aus einer frueheren Migration darf im
# Rettungsmodus nicht als "FREIGEGEBEN" durchschlagen.

def test_control_json_is_ignored_outside_migration_mode(tmp_path, monkeypatch):
    monkeypatch.setattr(display, "_service_active", lambda service_name: True)
    (tmp_path / "mode").write_text("recovery")
    (tmp_path / "control.json").write_text(json.dumps({"phase": "armed", "armed_target": "g95_cw"}))
    conf_path = tmp_path / "station.conf"
    conf_path.write_text("SSID='ninlight-recovery'\n")

    state = display.build_state(run_dir=tmp_path, conf_path=conf_path, service_name="x")

    assert state["mode"] == "recovery"
    assert "phase" not in state
    assert "armed_target" not in state
    assert "FREIGEGEBEN" not in "\n".join(render.lines(state))


def test_build_state_off_when_service_not_active(tmp_path, monkeypatch):
    monkeypatch.setattr(display, "_service_active", lambda service_name: False)
    # Selbst ein noch so frisches/gueltiges status.json darf "off" nicht verhindern -
    # "ninlight-station off" laesst status.json bewusst unangetastet liegen.
    (tmp_path / "mode").write_text("migration")
    (tmp_path / "status.json").write_text(json.dumps({"mode": "migration", "served": 5}))

    state = display.build_state(run_dir=tmp_path, conf_path=tmp_path / "station.conf",
                                 service_name="x")

    assert state == {"mode": "off"}


def test_build_state_mode_comes_from_mode_file_not_status_json(tmp_path, monkeypatch):
    """Der Modus-Vorrang liegt bei RUN_DIR/mode, nicht bei status.json's "mode"-Feld -
    status.json kann veraltet sein (Fixrunde 1, Kleinigkeit: der Vorrang war zuerst
    umgekehrt)."""
    monkeypatch.setattr(display, "_service_active", lambda service_name: True)
    (tmp_path / "mode").write_text("recovery")
    (tmp_path / "status.json").write_text(json.dumps({"mode": "migration", "served": 1}))
    conf_path = tmp_path / "station.conf"
    conf_path.write_text("SSID='ninlight-recovery'\n")

    state = display.build_state(run_dir=tmp_path, conf_path=conf_path, service_name="x")

    assert state["mode"] == "recovery"
    assert state["served"] == 1


def test_build_state_falls_back_to_recovery_without_mode_file(tmp_path, monkeypatch):
    monkeypatch.setattr(display, "_service_active", lambda service_name: True)
    state = display.build_state(run_dir=tmp_path, conf_path=tmp_path / "station.conf",
                                 service_name="x")
    assert state["mode"] == "recovery"


def test_read_conf_accepts_export_prefix(tmp_path):
    """setup_pi.sh prueft beim Nachtragen fehlender Schluessel ausdruecklich auf ein
    optionales "export "-Praefix (^(export[[:space:]]+)?KEY=) - eine bereits vorhandene
    Konfigurationsdatei mit "export SSID=..." muss also genauso gelesen werden koennen."""
    conf_path = tmp_path / "station.conf"
    conf_path.write_text("export SSID='ninlight-recovery'\nexport MIGRATE_SSID='qconnex-firmware'\n")

    values = display._read_conf(conf_path)

    assert values["SSID"] == "ninlight-recovery"
    assert values["MIGRATE_SSID"] == "qconnex-firmware"