/**
 * SDK Catalog Manager - Central Registry
 * 
 * Maps all SDK catalogs to a unified interface for browsing, searching, and CRUD.
 */

import type {
  CatalogId,
  CatalogMeta,
  CatalogModule,
  CatalogEntry,
  CatalogStats,
  CatalogOverviewStats,
  CustomCatalogEntry,
  CustomCatalogs,
} from './types'

// =============================================================================
// CATALOG DATA IMPORTS
// =============================================================================

import { RISK_CATALOG } from '../dsfa/risk-catalog'
import { MITIGATION_LIBRARY } from '../dsfa/mitigation-library'
import { AI_RISK_CATALOG } from '../dsfa/ai-risk-catalog'
import { AI_MITIGATION_LIBRARY } from '../dsfa/ai-mitigation-library'
import { PROHIBITED_AI_PRACTICES } from '../dsfa/prohibited-ai-practices'
import { EU_BASE_FRAMEWORKS, NATIONAL_FRAMEWORKS } from '../dsfa/eu-legal-frameworks'
import { GDPR_ENFORCEMENT_CASES } from '../dsfa/gdpr-enforcement-cases'
import { WP248_CRITERIA, SDM_GOALS, DSFA_AUTHORITY_RESOURCES } from '../dsfa/types'
import { VVT_BASELINE_CATALOG } from '../vvt-baseline-catalog'
import { BASELINE_TEMPLATES } from '../loeschfristen-baseline-catalog'
import { VENDOR_TEMPLATES, COUNTRY_RISK_PROFILES } from '../vendor-compliance/catalog/vendor-templates'
import { LEGAL_BASIS_INFO, STANDARD_RETENTION_PERIODS } from '../vendor-compliance/catalog/legal-basis'

// =============================================================================
// HELPER: Resolve localized text fields
// =============================================================================

function resolveField(value: unknown): string {
  if (value === null || value === undefined) return ''
  if (typeof value === 'string') return value
  if (typeof value === 'number') return String(value)
  if (typeof value === 'object' && 'de' in (value as Record<string, unknown>)) {
    return String((value as Record<string, string>).de || '')
  }
  return String(value)
}

// =============================================================================
// SDM_GOALS as entries array (it's a Record, not an array)
// =============================================================================

const SDM_GOALS_ENTRIES = Object.entries(SDM_GOALS).map(([key, val]) => ({
  id: key,
  name: val.name,
  description: val.description,
  article: val.article,
}))

// =============================================================================
// CATALOG REGISTRY
// =============================================================================

export const CATALOG_REGISTRY: Record<CatalogId, CatalogMeta> = {
  'dsfa-risks': {
    id: 'dsfa-risks',
    name: 'DSFA Risikokatalog',
    description: 'Standardrisiken fuer Datenschutz-Folgenabschaetzungen',
    module: 'dsfa',
    icon: 'ShieldAlert',
    systemCount: RISK_CATALOG.length,
    allowCustom: true,
    idField: 'id',
    nameField: 'title',
    descriptionField: 'description',
    categoryField: 'category',
    fields: [
      { key: 'id', label: 'Risiko-ID', type: 'text', required: true, placeholder: 'R-XXX-01' },
      { key: 'title', label: 'Titel', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'category', label: 'Kategorie', type: 'select', required: true, options: [
        { value: 'confidentiality', label: 'Vertraulichkeit' },
        { value: 'integrity', label: 'Integritaet' },
        { value: 'availability', label: 'Verfuegbarkeit' },
        { value: 'rights_freedoms', label: 'Rechte & Freiheiten' },
      ]},
      { key: 'typicalLikelihood', label: 'Typische Eintrittswahrscheinlichkeit', type: 'select', required: false, options: [
        { value: 'low', label: 'Niedrig' },
        { value: 'medium', label: 'Mittel' },
        { value: 'high', label: 'Hoch' },
      ]},
      { key: 'typicalImpact', label: 'Typische Auswirkung', type: 'select', required: false, options: [
        { value: 'low', label: 'Niedrig' },
        { value: 'medium', label: 'Mittel' },
        { value: 'high', label: 'Hoch' },
      ]},
    ],
    searchableFields: ['id', 'title', 'description', 'category'],
  },

  'dsfa-mitigations': {
    id: 'dsfa-mitigations',
    name: 'DSFA Massnahmenbibliothek',
    description: 'Technische und organisatorische Massnahmen fuer DSFAs',
    module: 'dsfa',
    icon: 'Shield',
    systemCount: MITIGATION_LIBRARY.length,
    allowCustom: true,
    idField: 'id',
    nameField: 'title',
    descriptionField: 'description',
    categoryField: 'type',
    fields: [
      { key: 'id', label: 'Massnahmen-ID', type: 'text', required: true, placeholder: 'M-XXX-01' },
      { key: 'title', label: 'Titel', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'type', label: 'Typ', type: 'select', required: true, options: [
        { value: 'technical', label: 'Technisch' },
        { value: 'organizational', label: 'Organisatorisch' },
        { value: 'legal', label: 'Rechtlich' },
      ]},
      { key: 'effectiveness', label: 'Wirksamkeit', type: 'select', required: false, options: [
        { value: 'low', label: 'Niedrig' },
        { value: 'medium', label: 'Mittel' },
        { value: 'high', label: 'Hoch' },
      ]},
      { key: 'legalBasis', label: 'Rechtsgrundlage', type: 'text', required: false },
    ],
    searchableFields: ['id', 'title', 'description', 'type', 'legalBasis'],
  },

  'ai-risks': {
    id: 'ai-risks',
    name: 'KI-Risikokatalog',
    description: 'Spezifische Risiken fuer KI-Systeme',
    module: 'ai_act',
    icon: 'Bot',
    systemCount: AI_RISK_CATALOG.length,
    allowCustom: true,
    idField: 'id',
    nameField: 'title',
    descriptionField: 'description',
    categoryField: 'category',
    fields: [
      { key: 'id', label: 'Risiko-ID', type: 'text', required: true, placeholder: 'R-AI-XXX-01' },
      { key: 'title', label: 'Titel', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'category', label: 'Kategorie', type: 'select', required: true, options: [
        { value: 'confidentiality', label: 'Vertraulichkeit' },
        { value: 'integrity', label: 'Integritaet' },
        { value: 'availability', label: 'Verfuegbarkeit' },
        { value: 'rights_freedoms', label: 'Rechte & Freiheiten' },
      ]},
      { key: 'typicalLikelihood', label: 'Eintrittswahrscheinlichkeit', type: 'select', required: false, options: [
        { value: 'low', label: 'Niedrig' },
        { value: 'medium', label: 'Mittel' },
        { value: 'high', label: 'Hoch' },
      ]},
      { key: 'typicalImpact', label: 'Auswirkung', type: 'select', required: false, options: [
        { value: 'low', label: 'Niedrig' },
        { value: 'medium', label: 'Mittel' },
        { value: 'high', label: 'Hoch' },
      ]},
    ],
    searchableFields: ['id', 'title', 'description', 'category'],
  },

  'ai-mitigations': {
    id: 'ai-mitigations',
    name: 'KI-Massnahmenbibliothek',
    description: 'Massnahmen fuer KI-spezifische Risiken',
    module: 'ai_act',
    icon: 'ShieldCheck',
    systemCount: AI_MITIGATION_LIBRARY.length,
    allowCustom: true,
    idField: 'id',
    nameField: 'title',
    descriptionField: 'description',
    categoryField: 'type',
    fields: [
      { key: 'id', label: 'Massnahmen-ID', type: 'text', required: true },
      { key: 'title', label: 'Titel', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'type', label: 'Typ', type: 'select', required: true, options: [
        { value: 'technical', label: 'Technisch' },
        { value: 'organizational', label: 'Organisatorisch' },
        { value: 'legal', label: 'Rechtlich' },
      ]},
      { key: 'effectiveness', label: 'Wirksamkeit', type: 'select', required: false, options: [
        { value: 'low', label: 'Niedrig' },
        { value: 'medium', label: 'Mittel' },
        { value: 'high', label: 'Hoch' },
      ]},
    ],
    searchableFields: ['id', 'title', 'description', 'type'],
  },

  'prohibited-ai-practices': {
    id: 'prohibited-ai-practices',
    name: 'Verbotene KI-Praktiken',
    description: 'Absolut und bedingt verbotene KI-Anwendungen nach AI Act',
    module: 'ai_act',
    icon: 'Ban',
    systemCount: PROHIBITED_AI_PRACTICES.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'title',
    descriptionField: 'description',
    categoryField: 'severity',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'title', label: 'Titel', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'severity', label: 'Schwere', type: 'select', required: true, options: [
        { value: 'absolute', label: 'Absolutes Verbot' },
        { value: 'conditional', label: 'Bedingtes Verbot' },
      ]},
      { key: 'legalBasis', label: 'Rechtsgrundlage', type: 'text', required: false },
    ],
    searchableFields: ['id', 'title', 'description', 'severity', 'legalBasis'],
  },

  'vvt-templates': {
    id: 'vvt-templates',
    name: 'VVT Baseline-Vorlagen',
    description: 'Vorlagen fuer Verarbeitungstaetigkeiten',
    module: 'vvt',
    icon: 'FileText',
    systemCount: VVT_BASELINE_CATALOG.length,
    allowCustom: true,
    idField: 'templateId',
    nameField: 'name',
    descriptionField: 'description',
    categoryField: 'businessFunction',
    fields: [
      { key: 'templateId', label: 'Vorlagen-ID', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'businessFunction', label: 'Geschaeftsbereich', type: 'select', required: true, options: [
        { value: 'hr', label: 'Personal' },
        { value: 'finance', label: 'Finanzen' },
        { value: 'sales', label: 'Vertrieb' },
        { value: 'marketing', label: 'Marketing' },
        { value: 'support', label: 'Support' },
        { value: 'it', label: 'IT' },
        { value: 'other', label: 'Sonstige' },
      ]},
      { key: 'protectionLevel', label: 'Schutzniveau', type: 'select', required: false, options: [
        { value: 'LOW', label: 'Niedrig' },
        { value: 'MEDIUM', label: 'Mittel' },
        { value: 'HIGH', label: 'Hoch' },
      ]},
    ],
    searchableFields: ['templateId', 'name', 'description', 'businessFunction'],
  },

  'loeschfristen-templates': {
    id: 'loeschfristen-templates',
    name: 'Loeschfristen-Vorlagen',
    description: 'Baseline-Vorlagen fuer Aufbewahrungsfristen',
    module: 'vvt',
    icon: 'Clock',
    systemCount: BASELINE_TEMPLATES.length,
    allowCustom: true,
    idField: 'templateId',
    nameField: 'dataObjectName',
    descriptionField: 'description',
    categoryField: 'retentionDriver',
    fields: [
      { key: 'templateId', label: 'Vorlagen-ID', type: 'text', required: true },
      { key: 'dataObjectName', label: 'Datenobjekt', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'retentionDuration', label: 'Aufbewahrungsdauer', type: 'number', required: true, min: 0 },
      { key: 'retentionUnit', label: 'Einheit', type: 'select', required: true, options: [
        { value: 'days', label: 'Tage' },
        { value: 'months', label: 'Monate' },
        { value: 'years', label: 'Jahre' },
      ]},
      { key: 'deletionMethod', label: 'Loeschmethode', type: 'text', required: false },
      { key: 'responsibleRole', label: 'Verantwortlich', type: 'text', required: false },
    ],
    searchableFields: ['templateId', 'dataObjectName', 'description', 'retentionDriver'],
  },

  'vendor-templates': {
    id: 'vendor-templates',
    name: 'AV-Vorlagen',
    description: 'Vorlagen fuer Auftragsverarbeitungsvertraege',
    module: 'vendor',
    icon: 'Building2',
    systemCount: VENDOR_TEMPLATES.length,
    allowCustom: true,
    idField: 'id',
    nameField: 'name',
    descriptionField: 'description',
    categoryField: 'serviceCategory',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'serviceCategory', label: 'Kategorie', type: 'text', required: true },
    ],
    searchableFields: ['id', 'name', 'description', 'serviceCategory'],
  },

  'country-risk-profiles': {
    id: 'country-risk-profiles',
    name: 'Laenderrisikoprofile',
    description: 'Datenschutz-Risikobewertung nach Laendern',
    module: 'vendor',
    icon: 'Globe',
    systemCount: COUNTRY_RISK_PROFILES.length,
    allowCustom: false,
    idField: 'code',
    nameField: 'name',
    categoryField: 'riskLevel',
    fields: [
      { key: 'code', label: 'Laendercode', type: 'text', required: true },
      { key: 'name', label: 'Land', type: 'text', required: true },
      { key: 'riskLevel', label: 'Risikostufe', type: 'select', required: true, options: [
        { value: 'LOW', label: 'Niedrig' },
        { value: 'MEDIUM', label: 'Mittel' },
        { value: 'HIGH', label: 'Hoch' },
        { value: 'VERY_HIGH', label: 'Sehr hoch' },
      ]},
      { key: 'isEU', label: 'EU-Mitglied', type: 'boolean', required: false },
      { key: 'isEEA', label: 'EWR-Mitglied', type: 'boolean', required: false },
      { key: 'hasAdequacyDecision', label: 'Angemessenheitsbeschluss', type: 'boolean', required: false },
    ],
    searchableFields: ['code', 'name', 'riskLevel'],
  },

  'legal-bases': {
    id: 'legal-bases',
    name: 'Rechtsgrundlagen',
    description: 'DSGVO Art. 6 und Art. 9 Rechtsgrundlagen',
    module: 'reference',
    icon: 'Scale',
    systemCount: LEGAL_BASIS_INFO.length,
    allowCustom: false,
    idField: 'type',
    nameField: 'name',
    descriptionField: 'description',
    categoryField: 'article',
    fields: [
      { key: 'type', label: 'Typ', type: 'text', required: true },
      { key: 'article', label: 'Artikel', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'isSpecialCategory', label: 'Besondere Kategorie (Art. 9)', type: 'boolean', required: false },
    ],
    searchableFields: ['type', 'article', 'name', 'description'],
  },

  'retention-periods': {
    id: 'retention-periods',
    name: 'Aufbewahrungsfristen',
    description: 'Gesetzliche Standard-Aufbewahrungsfristen',
    module: 'reference',
    icon: 'Timer',
    systemCount: STANDARD_RETENTION_PERIODS.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'name',
    descriptionField: 'description',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'legalBasis', label: 'Rechtsgrundlage', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
    ],
    searchableFields: ['id', 'name', 'legalBasis', 'description'],
  },

  'eu-legal-frameworks': {
    id: 'eu-legal-frameworks',
    name: 'EU-Rechtsrahmen',
    description: 'EU-weite Datenschutzgesetze und -verordnungen',
    module: 'reference',
    icon: 'Landmark',
    systemCount: EU_BASE_FRAMEWORKS.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'name',
    descriptionField: 'description',
    categoryField: 'type',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'fullName', label: 'Vollstaendiger Name', type: 'text', required: true },
      { key: 'type', label: 'Typ', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
    ],
    searchableFields: ['id', 'name', 'fullName', 'description', 'type'],
  },

  'national-legal-frameworks': {
    id: 'national-legal-frameworks',
    name: 'Nationale Rechtsrahmen',
    description: 'Nationale Datenschutzgesetze der EU/EWR-Staaten',
    module: 'reference',
    icon: 'Flag',
    systemCount: NATIONAL_FRAMEWORKS.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'name',
    descriptionField: 'description',
    categoryField: 'countryCode',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'countryCode', label: 'Land', type: 'text', required: true },
      { key: 'type', label: 'Typ', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
    ],
    searchableFields: ['id', 'name', 'countryCode', 'description', 'type'],
  },

  'gdpr-enforcement-cases': {
    id: 'gdpr-enforcement-cases',
    name: 'DSGVO-Bussgeldentscheidungen',
    description: 'Relevante Bussgeldentscheidungen als Referenz',
    module: 'reference',
    icon: 'Gavel',
    systemCount: GDPR_ENFORCEMENT_CASES.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'company',
    descriptionField: 'description',
    categoryField: 'country',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'company', label: 'Unternehmen', type: 'text', required: true },
      { key: 'country', label: 'Land', type: 'text', required: true },
      { key: 'year', label: 'Jahr', type: 'number', required: true },
      { key: 'fineOriginal', label: 'Bussgeld (EUR)', type: 'number', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
    ],
    searchableFields: ['id', 'company', 'country', 'description'],
  },

  'wp248-criteria': {
    id: 'wp248-criteria',
    name: 'WP248 Kriterien',
    description: 'Kriterien zur DSFA-Pflichtpruefung nach WP248',
    module: 'dsfa',
    icon: 'ClipboardCheck',
    systemCount: WP248_CRITERIA.length,
    allowCustom: false,
    idField: 'code',
    nameField: 'title',
    descriptionField: 'description',
    fields: [
      { key: 'code', label: 'Code', type: 'text', required: true },
      { key: 'title', label: 'Titel', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'gdprRef', label: 'DSGVO-Referenz', type: 'text', required: false },
    ],
    searchableFields: ['code', 'title', 'description', 'gdprRef'],
  },

  'sdm-goals': {
    id: 'sdm-goals',
    name: 'SDM Gewaehrleistungsziele',
    description: 'Standard-Datenschutzmodell Gewaehrleistungsziele',
    module: 'dsfa',
    icon: 'Target',
    systemCount: SDM_GOALS_ENTRIES.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'name',
    descriptionField: 'description',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'name', label: 'Name', type: 'text', required: true },
      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
      { key: 'article', label: 'DSGVO-Artikel', type: 'text', required: false },
    ],
    searchableFields: ['id', 'name', 'description', 'article'],
  },

  'dsfa-authority-resources': {
    id: 'dsfa-authority-resources',
    name: 'Aufsichtsbehoerden-Ressourcen',
    description: 'DSFA-Ressourcen der deutschen Aufsichtsbehoerden',
    module: 'dsfa',
    icon: 'Building',
    systemCount: DSFA_AUTHORITY_RESOURCES.length,
    allowCustom: false,
    idField: 'id',
    nameField: 'shortName',
    descriptionField: 'name',
    categoryField: 'state',
    fields: [
      { key: 'id', label: 'ID', type: 'text', required: true },
      { key: 'shortName', label: 'Kurzname', type: 'text', required: true },
      { key: 'name', label: 'Voller Name', type: 'text', required: true },
      { key: 'state', label: 'Bundesland', type: 'text', required: true },
    ],
    searchableFields: ['id', 'shortName', 'name', 'state'],
  },
}

// =============================================================================
// SYSTEM ENTRIES MAP
// =============================================================================

const SYSTEM_ENTRIES_MAP: Record<CatalogId, Record<string, unknown>[]> = {
  'dsfa-risks': RISK_CATALOG as unknown as Record<string, unknown>[],
  'dsfa-mitigations': MITIGATION_LIBRARY as unknown as Record<string, unknown>[],
  'ai-risks': AI_RISK_CATALOG as unknown as Record<string, unknown>[],
  'ai-mitigations': AI_MITIGATION_LIBRARY as unknown as Record<string, unknown>[],
  'prohibited-ai-practices': PROHIBITED_AI_PRACTICES as unknown as Record<string, unknown>[],
  'vvt-templates': VVT_BASELINE_CATALOG as unknown as Record<string, unknown>[],
  'loeschfristen-templates': BASELINE_TEMPLATES as unknown as Record<string, unknown>[],
  'vendor-templates': VENDOR_TEMPLATES as unknown as Record<string, unknown>[],
  'country-risk-profiles': COUNTRY_RISK_PROFILES as unknown as Record<string, unknown>[],
  'legal-bases': LEGAL_BASIS_INFO as unknown as Record<string, unknown>[],
  'retention-periods': STANDARD_RETENTION_PERIODS as unknown as Record<string, unknown>[],
  'eu-legal-frameworks': EU_BASE_FRAMEWORKS as unknown as Record<string, unknown>[],
  'national-legal-frameworks': NATIONAL_FRAMEWORKS as unknown as Record<string, unknown>[],
  'gdpr-enforcement-cases': GDPR_ENFORCEMENT_CASES as unknown as Record<string, unknown>[],
  'wp248-criteria': WP248_CRITERIA as unknown as Record<string, unknown>[],
  'sdm-goals': SDM_GOALS_ENTRIES as unknown as Record<string, unknown>[],
  'dsfa-authority-resources': DSFA_AUTHORITY_RESOURCES as unknown as Record<string, unknown>[],
}

// =============================================================================
// ENTRY CONVERTERS
// =============================================================================

function systemEntryToCatalogEntry(
  catalogId: CatalogId,
  data: Record<string, unknown>,
): CatalogEntry {
  const meta = CATALOG_REGISTRY[catalogId]
  const idValue = resolveField(data[meta.idField])
  const nameValue = resolveField(data[meta.nameField])
  const descValue = meta.descriptionField ? resolveField(data[meta.descriptionField]) : undefined
  const catValue = meta.categoryField ? resolveField(data[meta.categoryField]) : undefined

  return {
    id: idValue || crypto.randomUUID(),
    catalogId,
    source: 'system',
    data,
    displayName: nameValue || idValue || '(Unbenannt)',
    displayDescription: descValue,
    category: catValue,
  }
}

function customEntryToCatalogEntry(
  catalogId: CatalogId,
  entry: CustomCatalogEntry,
): CatalogEntry {
  const meta = CATALOG_REGISTRY[catalogId]
  const nameValue = resolveField(entry.data[meta.nameField])
  const descValue = meta.descriptionField ? resolveField(entry.data[meta.descriptionField]) : undefined
  const catValue = meta.categoryField ? resolveField(entry.data[meta.categoryField]) : undefined

  return {
    id: entry.id,
    catalogId,
    source: 'custom',
    data: entry.data,
    displayName: nameValue || '(Unbenannt)',
    displayDescription: descValue,
    category: catValue,
  }
}

// =============================================================================
// PUBLIC API
// =============================================================================

export function getSystemEntries(catalogId: CatalogId): CatalogEntry[] {
  const raw = SYSTEM_ENTRIES_MAP[catalogId] || []
  return raw.map(data => systemEntryToCatalogEntry(catalogId, data))
}

export function getAllEntries(
  catalogId: CatalogId,
  customEntries: CustomCatalogEntry[] = [],
): CatalogEntry[] {
  const system = getSystemEntries(catalogId)
  const custom = customEntries.map(e => customEntryToCatalogEntry(catalogId, e))
  return [...system, ...custom]
}

export function getCatalogsByModule(module: CatalogModule): CatalogMeta[] {
  return Object.values(CATALOG_REGISTRY).filter(c => c.module === module)
}

export function getCatalogStats(
  catalogId: CatalogId,
  customEntries: CustomCatalogEntry[] = [],
): CatalogStats {
  const meta = CATALOG_REGISTRY[catalogId]
  return {
    catalogId,
    systemCount: meta.systemCount,
    customCount: customEntries.length,
    totalCount: meta.systemCount + customEntries.length,
  }
}

export function getOverviewStats(customCatalogs: CustomCatalogs): CatalogOverviewStats {
  const modules: CatalogModule[] = ['dsfa', 'vvt', 'vendor', 'ai_act', 'reference']
  const byModule = {} as Record<CatalogModule, { catalogs: number; entries: number }>

  let totalSystemEntries = 0
  let totalCustomEntries = 0

  for (const mod of modules) {
    const cats = getCatalogsByModule(mod)
    let entries = 0
    for (const cat of cats) {
      const customCount = customCatalogs[cat.id]?.length ?? 0
      entries += cat.systemCount + customCount
      totalSystemEntries += cat.systemCount
      totalCustomEntries += customCount
    }
    byModule[mod] = { catalogs: cats.length, entries }
  }

  return {
    totalCatalogs: Object.keys(CATALOG_REGISTRY).length,
    totalSystemEntries,
    totalCustomEntries,
    totalEntries: totalSystemEntries + totalCustomEntries,
    byModule,
  }
}

export function searchCatalog(
  catalogId: CatalogId,
  query: string,
  customEntries: CustomCatalogEntry[] = [],
): CatalogEntry[] {
  const allEntries = getAllEntries(catalogId, customEntries)
  const meta = CATALOG_REGISTRY[catalogId]
  const q = query.toLowerCase().trim()

  if (!q) return allEntries

  return allEntries
    .map(entry => {
      let score = 0
      for (const field of meta.searchableFields) {
        const value = resolveField(entry.data[field]).toLowerCase()
        if (value.includes(q)) {
          score += value.startsWith(q) ? 10 : 5
        }
      }
      // Also search display name
      if (entry.displayName.toLowerCase().includes(q)) {
        score += 15
      }
      return { entry, score }
    })
    .filter(r => r.score > 0)
    .sort((a, b) => b.score - a.score)
    .map(r => r.entry)
}