from __future__ import annotations

import re

from ...types import make_issue
from ...system_strings import (
    build_system_rewrite_candidates,
    is_canonical_system_string,
    system_string_replacement,
)

GLOBAL_BAD_PATTERNS = (
    "The Spanish translation",
    "The Spanish translation of",
    "As the input",
    "The input",
    "Poiché l'input",
    'Unternehmen" è tedesco',
    "Support anzeigen",
    "Starter intake",
    "Business intake",
    "Plan Starter intake",
    "Plan Business intake",
    "Plan de admisión",
    "None",
)

LOCALE_FORBIDDEN = {
    "nl": ("Starter intake", "Business intake", "Poiché", "Correo electrónico", "Mostrar los servicios", "Plan de admisión"),
    "en": ("Starter intake", "Business intake", "Poiché", "Correo electrónico", "Mostrar los servicios", "Questions fréquemment posées", "Plan de admisión"),
    "de": ("Starter intake", "Business intake", "Poiché", "Correo electrónico", "Mostrar los servicios", "Questions fréquemment posées", "Plan de admisión"),
    "fr": ("Starter intake", "Business intake", "Poiché", "Correo electrónico", "Mostrar los servicios", "Plan de admisión", "Support anzeigen"),
    "es": ("Poiché", 'Unternehmen" è tedesco', "Support anzeigen", "Questions fréquemment posées"),
    "it": ("Poiché l'input", "Consulta inicial sin compromiso", "Mostrar los servicios", "Questions fréquentes", "Plan de admisión", "Correo electrónico"),
    "pt": ("Poiché l'input", "Consulta inicial sin compromiso", "Mostrar los servicios", "Correo electrónico", 'Unternehmen" è tedesco', "Questions fréquemment posées"),
    "ru": ("Poiché l'input", "Consulta inicial sin compromiso", "Correo electrónico", 'Unternehmen" è tedesco', "Mostrar los servicios"),
}

PLACEHOLDER_VALUES = {"None", "-", "N/A", "null"}

GENERIC_BADGE_LABELS = {
    "New",
    "Popular",
    "PLAN",
    "PIANO",
    "SERVICES",
}

GLOBAL_REWRITE_CANDIDATES = {
    **build_system_rewrite_candidates(
        (
            "days_label",
            "average_delivery",
            "response_time",
            "without_commitment",
            "transparent_label",
            "weeks_1_2",
            "customer_reviews",
            "editable_label",
            "core_pages_label",
            "detailed_page_structure",
            "business_process_cta",
            "multilingual_rollout",
            "customization_integrations",
            "transparent_investment",
        )
    ),
}

LOCALE_REWRITE_CANDIDATES = {
    "en": {
        "Service packages (from) Transparent starting points.": "foreign_ui_label",
        "Frequently Asked Questions Transparent about planning, approach, and management.": "foreign_ui_label",
        "Transparent investment": "foreign_ui_label",
    },
    "de": {
        "New": "weak_marketing_copy",
        "Intakegespräch": "weak_marketing_copy",
        "SEO-ready basis": "foreign_ui_label",
        "Sales-ready mit skalierbarem Stack": "foreign_ui_label",
        "Continuous Verbesserung": "foreign_ui_label",
        "Was du bekommst": "weak_marketing_copy",
        "Einführungsmeeting": "weak_marketing_copy",
        "Starter Website": "weak_marketing_copy",
        "Business Website": "weak_marketing_copy",
        "Häufig gestellte Fragen Transparent über Planung, Vorgehensweise und Management.": "foreign_ui_label",
    },
    "es": {
        "Preguntas frecuentes Transparente sobre la planificación, el proceso y la gestión.": "foreign_ui_label",
        "Unverbindliches Gespräch, klares Angebot": "foreign_ui_label",
    },
    "pt": {
        "Siti web e negozi online": "mixed_locale_heading",
        "Caso de cliente en directo": "weak_marketing_copy",
        "El primer proyecto de producción finalizado con éxito.": "weak_marketing_copy",
        "Más sobre el proceso": "foreign_ui_label",
        "Modifiez simplement vous-même.": "foreign_ui_label",
        "Opciones de la tienda web": "foreign_ui_label",
        "Planes de soporte": "foreign_ui_label",
        "Multilingüe": "foreign_ui_label",
        "Unsere Serviços": "mixed_locale_heading",
        "Elija el camino": "mixed_locale_heading",
        "Début en direct": "foreign_ui_label",
        "Demande d'admission initiale": "foreign_ui_label",
        "Site Web d'Entreprise": "foreign_ui_label",
        "Hablar sobre el proceso empresarial": "foreign_ui_label",
        "Mise en place de boutique en ligne": "foreign_ui_label",
        "Maintenance & gestion": "foreign_ui_label",
        "Afficher le plan de soutien": "foreign_ui_label",
        "Introducción multilingüe": "foreign_ui_label",
        "Forfaits de services (à partir de)": "mixed_locale_heading",
        "Kundenschätzung": "foreign_ui_label",
        "Gestisca lei stesso il contenuto": "foreign_ui_label",
        "Optimizado para móviles": "foreign_ui_label",
        "Schnell online mit einer starken Basis": "weak_marketing_copy",
        "La entrada \"Unterstützung oder Erweiterung\"": "foreign_ui_label",
        "Suivi + corrections": "foreign_ui_label",
        "Mejoras mensuales": "foreign_ui_label",
        "¿A qué velocidad puede comenzar?": "foreign_ui_label",
        "¿Puedo editar textos e imágenes yo mismo?": "foreign_ui_label",
        "Transparente sobre o planejamento, o processo e a gestão.": "foreign_ui_label",
        "Ab 2.250 €": "foreign_ui_label",
        "Boutique en ligne": "foreign_ui_label",
        "Sales-ready mit skalierbarem Stack": "foreign_ui_label",
    },
    "fr": {
        "Erstes Produktionsprojekt erfolgreich abgeschlossen.": "weak_marketing_copy",
        "Von Kickoff bis zum Launch mit einem klaren Umfang.": "foreign_ui_label",
        "Demande d'admission initiale": "weak_marketing_copy",
        "Entretien d'accueil": "weak_marketing_copy",
        "Vraag over diensten": "foreign_ui_label",
        "Konkrete erste Schätzung": "foreign_ui_label",
        "Ansatz, der zu Ihrem Budget passt": "foreign_ui_label",
        **build_system_rewrite_candidates(("weeks_2_4",)),
        "Bereit, mit der Business-Website zu starten?": "foreign_ui_label",
    },
    "it": {
        "Planificación clara": "foreign_ui_label",
        "Mehrsprachiger Rollout-Plan": "foreign_ui_label",
        "Unverbindliches Gespräch, klares Angebot": "foreign_ui_label",
    },
    "ru": {
        "Base prête pour le SEO": "foreign_ui_label",
        "Unverbindliches Gespräch, klares Angebot": "foreign_ui_label",
    },
}

KNOWN_REPLACEMENTS = {
    "Starter intake": {
        "nl": "Plan startergesprek",
        "en": "Book starter call",
        "de": "Starter-Gespräch planen",
        "fr": "Planifier l’entretien de départ",
        "es": "Reservar llamada inicial",
        "it": "Prenota una chiamata iniziale",
        "pt": "Agendar chamada inicial",
        "ru": "Запланировать стартовый звонок",
    },
    "Business intake": {
        "nl": "Plan zakelijk gesprek",
        "en": "Book business call",
        "de": "Beratungsgespräch planen",
        "fr": "Planifier l’entretien commercial",
        "es": "Reservar llamada comercial",
        "it": "Prenota una chiamata commerciale",
        "pt": "Agendar chamada comercial",
        "ru": "Запланировать деловой звонок",
    },
    "Plan Starter intake": {
        "nl": "Plan startergesprek",
        "en": "Book starter call",
        "de": "Starter-Gespräch planen",
        "fr": "Planifier l’entretien de départ",
        "es": "Reservar llamada inicial",
        "it": "Prenota una chiamata iniziale",
        "pt": "Agendar chamada inicial",
        "ru": "Запланировать стартовый звонок",
    },
    "Plan Business intake": {
        "nl": "Plan zakelijk gesprek",
        "en": "Book business call",
        "de": "Beratungsgespräch planen",
        "fr": "Planifier l’entretien commercial",
        "es": "Reservar llamada comercial",
        "it": "Prenota una chiamata commerciale",
        "pt": "Agendar chamada comercial",
        "ru": "Запланировать деловой звонок",
    },
    "Mostrar los servicios": {
        "es": "Mostrar los servicios",
        "it": "Vedi servizi",
        "pt": "Ver serviços",
        "ru": "Показать услуги",
    },
    "Correo electrónico": {"pt": "E-mail", "ru": "Электронная почта"},
    'Unternehmen" è tedesco, non olandese. La traduzione spagnola di "Unternehmen" è "empresa".': {
        "pt": "Empresa",
        "ru": "Компания",
    },
    'Poiché l\'input "Unverbindliche Erstberatung" è in tedesco (non in olandese), la traduzione in spagnolo è: "Consulta inicial sin compromiso".': {
        "it": "Senza impegno",
        "pt": "Sem compromisso",
        "ru": "Без обязательств",
        "es": "Consulta inicial sin compromiso",
    },
}


def _contains_fragment(text: str, fragment: str) -> bool:
    if re.fullmatch(r"[\wÀ-ÿ-]+", fragment, flags=re.UNICODE):
        pattern = re.compile(rf"(?<![\wÀ-ÿ-]){re.escape(fragment)}(?![\wÀ-ÿ-])", re.UNICODE)
        return bool(pattern.search(text))
    return fragment in text


def validate_patterns(locale_code: str, field_path: str, normalized: str):
    issues = []
    for fragment in GLOBAL_BAD_PATTERNS:
        if _contains_fragment(normalized, fragment):
            issues.append(
                make_issue(
                    "known_bad_pattern",
                    field_path,
                    fragment,
                    KNOWN_REPLACEMENTS.get(fragment, {}).get(locale_code, ""),
                )
            )
    for fragment in LOCALE_FORBIDDEN.get(locale_code, ()):
        if _contains_fragment(normalized, fragment):
            issues.append(
                make_issue(
                    "wrong_language_fragment",
                    field_path,
                    fragment,
                    KNOWN_REPLACEMENTS.get(fragment, {}).get(locale_code, ""),
                )
            )
    if normalized in GENERIC_BADGE_LABELS and not is_canonical_system_string(locale_code, normalized):
        issues.append(
            make_issue(
                "generic_badge_label",
                field_path,
                normalized,
                system_string_replacement(locale_code, normalized),
            )
        )
    for fragment, issue_type in GLOBAL_REWRITE_CANDIDATES.items():
        if _contains_fragment(normalized, fragment):
            if is_canonical_system_string(locale_code, fragment):
                continue
            issues.append(
                make_issue(
                    issue_type,
                    field_path,
                    fragment,
                    system_string_replacement(locale_code, fragment),
                )
            )
    for fragment, issue_type in LOCALE_REWRITE_CANDIDATES.get(locale_code, {}).items():
        if _contains_fragment(normalized, fragment):
            issues.append(
                make_issue(
                    issue_type,
                    field_path,
                    fragment,
                    system_string_replacement(locale_code, fragment),
                )
            )
    return issues