"""
Tests that EN and DE locale files are consistent.
"""
from padelnomics.i18n import _CALC_ITEM_NAMES, _TRANSLATIONS, SUPPORTED_LANGS

# Keys with identical EN/DE values are acceptable — financial abbreviations,
# month abbreviations, English brand names used in German, and UI chrome
# that intentionally stays English in DE (Dashboard, Admin, Feedback).
_IDENTICAL_VALUE_ALLOWLIST = {
    # Financial / technical abbreviations (same in DE)
    "card_cash_on_cash", "card_irr", "card_moic", "card_rev_pah",
    "th_dscr", "th_ebitda", "wf_moic", "wiz_capex", "wiz_irr",
    # Month abbreviations (same in DE: Jan, Feb, Apr, Jun, Jul, Aug, Sep, Nov)
    "month_jan", "month_feb", "month_apr", "month_jun",
    "month_jul", "month_aug", "month_sep", "month_nov",
    # Indoor / Outdoor (English terms used in DE)
    "label_indoor", "label_outdoor", "toggle_indoor", "toggle_outdoor",
    "features_card_3_h2", "landing_feature_3_h3",
    "q1_facility_indoor", "q1_facility_outdoor", "q1_facility_both",
    # Revenue streams and product labels (English terms used in DE)
    "stream_coaching", "stream_fb",
    "pill_light_led_standard", "q1_lighting_led_std",
    # Plan names (brand names, same in DE)
    "sup_basic_name", "sup_growth_name", "sup_pro_name",
    "suppliers_basic_name", "suppliers_growth_name", "suppliers_pro_name",
    "dir_card_featured", "dir_card_growth", "dir_cat_software",
    # Supplier boost option names
    "sup_boost_logo", "sup_boost_sticky", "sup_boosts_h3",
    # Comparison table headers that use English terms in DE
    "sup_cmp_th_ads", "sup_cmp_th_us",
    # Problem section heading — "Google Ads" is a brand name
    "sup_prob_ads_h3", "suppliers_problem_2_h3",
    # Budget/lead labels that are English in DE
    "sup_lead_budget", "suppliers_leads_budget",
    # UI chrome that stays English in DE
    "nav_admin", "nav_dashboard", "nav_feedback",
    # Country names that are the same
    "country_uk", "country_us",
    "dir_country_CN", "dir_country_PT", "dir_country_TH",
    # Optional annotation
    "q9_company_note",
    # Dashboard chrome that stays English in DE (brand term)
    "dash_page_title", "dash_h1", "dash_name_label",
    # Supplier dashboard — analytics brand name
    "sd_ov_via_umami",
    # Lead heat filter labels (English terms used in DE)
    "sd_leads_filter_hot", "sd_leads_filter_warm", "sd_leads_filter_cool",
    # "Budget", "Name", "Phase", "Investor" — same in both languages
    "sd_leads_budget", "sd_card_budget", "sd_unlocked_label_budget",
    "sd_unlocked_label_name", "sd_unlocked_label_phase", "sd_stakeholder_investor",
    # Email lead forward labels — "Phase" and "Name" are identical in DE
    "email_lead_forward_lbl_phase", "email_lead_forward_lbl_name",
    # Listing form labels that are English brand terms / same in DE
    "sd_lst_logo", "sd_lst_website",
    # Boost option name — "Logo" is the same in DE
    "sd_boost_logo_name",
    # Business plan — Indoor/Outdoor same in DE, financial abbreviations
    "bp_indoor", "bp_outdoor",
    "bp_lbl_ebitda", "bp_lbl_irr", "bp_lbl_moic", "bp_lbl_opex",
    # Market Score — branded term kept in English in DE
    "footer_market_score",
    # Market Score chip labels — branded product names, same in DE
    "mscore_reife_chip", "mscore_potenzial_chip",
}


def test_en_de_key_parity():
    """EN and DE must have identical key sets."""
    en_keys = set(_TRANSLATIONS["en"].keys())
    de_keys = set(_TRANSLATIONS["de"].keys())
    en_only = en_keys - de_keys
    de_only = de_keys - en_keys
    assert not en_only, f"Keys in EN but not DE: {sorted(en_only)}"
    assert not de_only, f"Keys in DE but not EN: {sorted(de_only)}"


def test_all_values_non_empty():
    """No translation value should be an empty string."""
    for lang in SUPPORTED_LANGS:
        for key, value in _TRANSLATIONS[lang].items():
            assert value, f"Empty value for key {key!r} in lang {lang!r}"


def test_no_untranslated_copy_paste():
    """No key should have an identical EN and DE value (catches missed translations).

    Some keys are exempt — see _IDENTICAL_VALUE_ALLOWLIST.
    """
    en = _TRANSLATIONS["en"]
    de = _TRANSLATIONS["de"]
    violations = []
    for key in en:
        if key in _IDENTICAL_VALUE_ALLOWLIST:
            continue
        if en[key] == de[key]:
            violations.append((key, en[key]))
    assert not violations, (
        "Keys with identical EN/DE values (likely untranslated): "
        + ", ".join(f"{k!r}={v!r}" for k, v in violations[:10])
        + (f" ... and {len(violations) - 10} more" if len(violations) > 10 else "")
    )


def test_calc_item_names_key_parity():
    """EN and DE calc item names must have identical key sets."""
    en_keys = set(_CALC_ITEM_NAMES["en"].keys())
    de_keys = set(_CALC_ITEM_NAMES["de"].keys())
    assert en_keys == de_keys, (
        f"Calc item key mismatch — "
        f"EN-only: {sorted(en_keys - de_keys)}, DE-only: {sorted(de_keys - en_keys)}"
    )


def test_calc_item_names_non_empty():
    """No calc item name should be empty."""
    for lang in SUPPORTED_LANGS:
        for key, value in _CALC_ITEM_NAMES[lang].items():
            assert value, f"Empty calc item name for key {key!r} in lang {lang!r}"