/**
 * Scope-to-Facts Mapper
 *
 * Konvertiert CompanyProfile + ScopeProfilingAnswer[] + ScopeDecision
 * in das Go AI SDK ScopeDecision-Format fuer POST /assess-from-scope.
 */

import type { CompanyProfile } from './types'
import type { ScopeProfilingAnswer, ScopeDecision } from './compliance-scope-types'

/**
 * Payload-Format fuer den Go AI SDK /assess-from-scope Endpoint.
 * Muss mit ucca.ScopeDecision in scope_facts_mapper.go uebereinstimmen.
 */
export interface ScopeDecisionPayload {
  employee_count: number
  annual_revenue: number
  country: string
  industry: string
  legal_form: string
  processes_personal_data: boolean
  is_controller: boolean
  is_processor: boolean
  data_art9: boolean
  data_minors: boolean
  large_scale: boolean
  systematic_monitoring: boolean
  cross_border_transfer: boolean
  uses_processors: boolean
  automated_decisions: boolean
  processes_employee_data: boolean
  processes_health_data: boolean
  processes_financial_data: boolean
  uses_cookies: boolean
  uses_tracking: boolean
  uses_video_surveillance: boolean
  operates_platform: boolean
  platform_user_count: number
  proc_ai_usage: boolean
  is_ai_provider: boolean
  is_ai_deployer: boolean
  high_risk_ai: boolean
  limited_risk_ai: boolean
  sector: string
  special_services: string[]
  is_kritis: boolean
  is_financial_institution: boolean
  determined_level: string
  triggered_rules: string[]
  required_documents: string[]
  cert_target: string
}

/**
 * Konvertiert CompanyProfile + Scope-Daten in das Go SDK Payload-Format.
 */
export function buildAssessmentPayload(
  profile: CompanyProfile,
  scopeAnswers: ScopeProfilingAnswer[],
  decision: ScopeDecision | null
): ScopeDecisionPayload {
  const getBool = (questionId: string): boolean => getAnswerBool(scopeAnswers, questionId)
  const getMulti = (questionId: string): string[] => getAnswerMulti(scopeAnswers, questionId)

  const aiCategories = getMulti('ai_categories')
  const isAIProvider = aiCategories.includes('ai_provider') || aiCategories.includes('ai_developer')
  const isAIDeployer = aiCategories.includes('ai_deployer') || aiCategories.includes('ai_operator')
  const aiRisk = getAnswerString(scopeAnswers, 'ai_risk_assessment')

  const industry = Array.isArray(profile.industry) ? profile.industry.join(', ') : (profile.industry || '')
  const isFinancial = industry.toLowerCase().includes('finanz') ||
    industry.toLowerCase().includes('bank') ||
    industry.toLowerCase().includes('versicherung') ||
    industry.toLowerCase().includes('financial')

  return {
    employee_count: parseEmployeeRange(profile.employeeCount),
    annual_revenue: parseRevenueRange(profile.annualRevenue),
    country: profile.headquartersCountry || 'DE',
    industry,
    legal_form: profile.legalForm || '',
    processes_personal_data: true, // Jedes Unternehmen im Tool verarbeitet personenbezogene Daten
    is_controller: profile.isDataController ?? true,
    is_processor: profile.isDataProcessor ?? false,
    data_art9: getBool('data_art9'),
    data_minors: getBool('data_minors'),
    large_scale: parseEmployeeRange(profile.employeeCount) >= 250 || getBool('data_volume'),
    systematic_monitoring: getBool('proc_employee_monitoring') || getBool('proc_video_surveillance'),
    cross_border_transfer: getBool('tech_third_country'),
    uses_processors: getBool('tech_subprocessors'),
    automated_decisions: getBool('proc_adm_scoring'),
    processes_employee_data: getBool('data_hr'),
    processes_health_data: getBool('data_art9'),
    processes_financial_data: getBool('data_financial'),
    uses_cookies: getBool('prod_cookies_consent'),
    uses_tracking: getBool('proc_tracking'),
    uses_video_surveillance: getBool('proc_video_surveillance'),
    operates_platform: (profile.offerings || []).some(o =>
      o === 'software_saas' || o === 'app_web' || o === 'app_mobile'
    ),
    platform_user_count: parseCustomerCount(scopeAnswers),
    proc_ai_usage: getBool('ai_uses_ai'),
    is_ai_provider: isAIProvider,
    is_ai_deployer: isAIDeployer,
    high_risk_ai: aiRisk === 'high' || aiRisk === 'unacceptable',
    limited_risk_ai: aiRisk === 'limited',
    sector: mapIndustryToSector(industry),
    special_services: [],
    is_kritis: false, // Kann spaeter aus Branche abgeleitet werden
    is_financial_institution: isFinancial,
    determined_level: decision?.determinedLevel || 'L2',
    triggered_rules: decision?.triggeredHardTriggers?.map(t => t.rule.id) || [],
    required_documents: decision?.requiredDocuments?.map(d => d.documentType) || [],
    cert_target: getAnswerString(scopeAnswers, 'org_cert_target'),
  }
}

// =============================================================================
// Hilfsfunktionen
// =============================================================================

/** Liest eine boolean-Antwort aus den Scope-Antworten */
function getAnswerBool(answers: ScopeProfilingAnswer[], questionId: string): boolean {
  const answer = answers.find(a => a.questionId === questionId)
  if (!answer) return false
  if (typeof answer.value === 'boolean') return answer.value
  if (typeof answer.value === 'string') return answer.value === 'true' || answer.value === 'yes' || answer.value === 'ja'
  if (Array.isArray(answer.value)) return answer.value.length > 0
  return false
}

/** Liest eine Multi-Select-Antwort aus den Scope-Antworten */
function getAnswerMulti(answers: ScopeProfilingAnswer[], questionId: string): string[] {
  const answer = answers.find(a => a.questionId === questionId)
  if (!answer) return []
  if (Array.isArray(answer.value)) return answer.value as string[]
  if (typeof answer.value === 'string') return [answer.value]
  return []
}

/** Liest einen String-Wert aus den Scope-Antworten */
function getAnswerString(answers: ScopeProfilingAnswer[], questionId: string): string {
  const answer = answers.find(a => a.questionId === questionId)
  if (!answer) return ''
  if (typeof answer.value === 'string') return answer.value
  if (Array.isArray(answer.value)) return answer.value[0] || ''
  return String(answer.value)
}

/**
 * Konvertiert Mitarbeiter-Range-String in einen numerischen Wert (Mittelwert).
 * "1-9" → 5, "10-49" → 30, "50-249" → 150, "250-999" → 625, "1000+" → 1500
 */
export function parseEmployeeRange(range: string | undefined | null): number {
  if (!range) return 10
  const r = range.trim()
  if (r.includes('1000') || r.includes('+')) return 1500
  if (r.includes('250')) return 625
  if (r.includes('50')) return 150
  if (r.includes('10')) return 30
  return 5
}

/**
 * Konvertiert Umsatz-Range-String in einen numerischen Wert.
 * "< 2 Mio" → 1000000, "2-10 Mio" → 6000000, "10-50 Mio" → 30000000, "> 50 Mio" → 75000000
 */
export function parseRevenueRange(range: string | undefined | null): number {
  if (!range) return 1000000
  const r = range.trim().toLowerCase()
  if (r.includes('> 50') || r.includes('>50')) return 75000000
  if (r.includes('10-50') || r.includes('10 -')) return 30000000
  if (r.includes('2-10') || r.includes('2 -')) return 6000000
  return 1000000
}

/** Liest die Kundenzahl aus den Scope-Antworten */
function parseCustomerCount(answers: ScopeProfilingAnswer[]): number {
  const answer = answers.find(a => a.questionId === 'org_customer_count')
  if (!answer) return 0
  if (typeof answer.value === 'number') return answer.value
  const str = String(answer.value)
  const match = str.match(/\d+/)
  return match ? parseInt(match[0], 10) : 0
}

/**
 * Mappt deutsche Branchenbezeichnungen auf Go SDK Sektor-IDs.
 * Diese Sektoren werden fuer NIS2 Annex I/II Pruefung verwendet.
 */
function mapIndustryToSector(industry: string): string {
  const lower = industry.toLowerCase()

  // NIS2 Annex I — "Essential" Sektoren
  if (lower.includes('energie') || lower.includes('energy')) return 'energy'
  if (lower.includes('transport') || lower.includes('logistik')) return 'transport'
  if (lower.includes('bank') || lower.includes('finanz') || lower.includes('financial')) return 'banking'
  if (lower.includes('versicherung') || lower.includes('insurance')) return 'financial_market'
  if (lower.includes('gesundheit') || lower.includes('health') || lower.includes('pharma')) return 'health'
  if (lower.includes('wasser') || lower.includes('water')) return 'drinking_water'
  if (lower.includes('digital') || lower.includes('cloud') || lower.includes('hosting') || lower.includes('rechenzent')) return 'digital_infrastructure'
  if (lower.includes('telekommunikation') || lower.includes('telecom')) return 'digital_infrastructure'

  // NIS2 Annex II — "Important" Sektoren
  if (lower.includes('it') || lower.includes('software') || lower.includes('technologie')) return 'ict_service_management'
  if (lower.includes('lebensmittel') || lower.includes('food')) return 'food'
  if (lower.includes('chemie') || lower.includes('chemical')) return 'chemicals'
  if (lower.includes('forschung') || lower.includes('research')) return 'research'
  if (lower.includes('post') || lower.includes('kurier')) return 'postal'
  if (lower.includes('abfall') || lower.includes('waste')) return 'waste_management'
  if (lower.includes('fertigung') || lower.includes('manufactur') || lower.includes('produktion')) return 'manufacturing'

  // Fallback
  if (lower.includes('handel') || lower.includes('retail') || lower.includes('e-commerce')) return 'digital_providers'
  if (lower.includes('beratung') || lower.includes('consulting')) return 'ict_service_management'
  if (lower.includes('bildung') || lower.includes('education')) return 'research'
  if (lower.includes('medien') || lower.includes('media')) return 'digital_providers'

  return 'other'
}