/**
 * GraphQL резолверы для security dashboard
 *
 * Предоставляет API для получения данных безопасности,
 * метрик, алертов и аналитики для административной панели
 */

import { PrismaClient } from '@prisma/client'
import { GraphQLError } from 'graphql'

import { SecurityLogger } from '../../lib/security-logger'

import { AdvancedAuditReporting } from './advanced-audit-reporting'
import { CommercialDataAudit } from './commercial-data-audit'
import { RealTimeSecurityAlerts } from './real-time-security-alerts'

interface SecurityDashboardContext {
  user: {
    id: string
    organizationId: string
    organizationType: string
  }
  prisma: PrismaClient
}

/**
 * Типы для GraphQL схемы security dashboard
 */
export const securityDashboardTypeDefs = `
  extend type Query {
    securityMetrics(period: String!): SecurityMetrics
    securityAlerts(limit: Int, offset: Int, severity: String): SecurityAlertsList
    userAnalytics(userId: String!, period: String): UserAnalytics
    organizationSecurityReport(organizationId: String!, startDate: String!, endDate: String!): OrganizationReport
    securityTrends(days: Int): SecurityTrends
    activeSecurityThreats: ActiveThreats
    securitySystemStatus: SecuritySystemStatus
  }

  extend type Mutation {
    resolveSecurityAlert(alertId: String!): Boolean
    updateSecurityRule(ruleId: String!, config: JSON!): Boolean
    generateSecurityReport(params: SecurityReportParams!): SecurityReportResult
  }

  extend type Subscription {
    securityAlertsStream: SecurityAlert
    securityMetricsStream: SecurityMetrics
  }

  type SecurityMetrics {
    totalAccesses: Int!
    uniqueUsers: Int!
    topActions: [ActionCount!]!
    organizationBreakdown: [OrganizationCount!]!
    timeDistribution: [HourlyCount!]!
    suspiciousActivity: Int!
    resolvedAlerts: Int!
    activeAlerts: Int!
    riskScore: Float!
  }

  type ActionCount {
    action: String!
    count: Int!
  }

  type OrganizationCount {
    type: String!
    count: Int!
  }

  type HourlyCount {
    hour: Int!
    count: Int!
  }

  type SecurityAlertsList {
    alerts: [SecurityAlert!]!
    totalCount: Int!
    hasMore: Boolean!
  }

  type SecurityAlert {
    id: String!
    type: String!
    severity: String!
    userId: String!
    message: String!
    metadata: JSON!
    timestamp: String!
    resolved: Boolean!
    resolvedBy: String
    resolvedAt: String
  }

  type UserAnalytics {
    userId: String!
    organizationType: String!
    organizationId: String!
    totalAccesses: Int!
    uniqueResources: Int!
    lastActivity: String!
    riskScore: Float!
    activities: [UserActivity!]!
    anomalies: [SecurityAnomaly!]!
  }

  type UserActivity {
    action: String!
    resourceType: String!
    count: Int!
    avgPerHour: Float!
    maxPerHour: Int!
    timeRange: TimeRange!
  }

  type TimeRange {
    start: String!
    end: String!
  }

  type SecurityAnomaly {
    type: String!
    description: String!
    severity: String!
    timestamp: String!
  }

  type OrganizationReport {
    organizationId: String!
    organizationType: String!
    period: TimeRange!
    users: Int!
    totalActivity: Int!
    breakdown: ActivityBreakdown!
    compliance: ComplianceStatus!
    alerts: AlertSummary!
  }

  type ActivityBreakdown {
    viewing: Int!
    modifying: Int!
    exporting: Int!
  }

  type ComplianceStatus {
    dataAccess: String!
    partnerships: String!
    timePatterns: String!
  }

  type AlertSummary {
    generated: Int!
    resolved: Int!
    highPriority: Int!
  }

  type SecurityTrends {
    period: TimeRange!
    dataPoints: [TrendDataPoint!]!
    predictions: SecurityPredictions!
  }

  type TrendDataPoint {
    timestamp: String!
    totalAccesses: Int!
    uniqueUsers: Int!
    alerts: Int!
    riskScore: Float!
  }

  type SecurityPredictions {
    nextPeriodRisk: String!
    expectedVolume: Int!
    recommendedActions: [String!]!
  }

  type ActiveThreats {
    highRiskUsers: [ThreatUser!]!
    suspiciousPatterns: [ThreatPattern!]!
    criticalAlerts: [SecurityAlert!]!
    compromisedSessions: Int!
    blockedIps: [String!]!
  }

  type ThreatUser {
    userId: String!
    organizationType: String!
    riskScore: Float!
    lastActivity: String!
    threatIndicators: [String!]!
  }

  type ThreatPattern {
    pattern: String!
    description: String!
    occurrences: Int!
    affectedUsers: Int!
    firstSeen: String!
    lastSeen: String!
  }

  type SecuritySystemStatus {
    monitoring: SystemComponent!
    alerts: SystemComponent!
    audit: SystemComponent!
    dataFiltering: SystemComponent!
    uptime: Float!
    version: String!
    lastHealthCheck: String!
  }

  type SystemComponent {
    status: String!
    version: String!
    uptime: Float!
    metrics: JSON!
  }

  input SecurityReportParams {
    startDate: String!
    endDate: String!
    organizationId: String
    userId: String
    reportType: String!
    format: String!
  }

  type SecurityReportResult {
    reportId: String!
    status: String!
    downloadUrl: String
    generatedAt: String!
    expiresAt: String!
  }
`

/**
 * GraphQL резолверы для security dashboard
 */
export const securityDashboardResolvers = {
  Query: {
    /**
     * Получение основных метрик безопасности
     */
    securityMetrics: async (
      _: unknown,
      { period }: { period: string },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        const { startDate, endDate } = parsePeriod(period)
        const metrics = await AdvancedAuditReporting.generateSecurityReport(
          context.prisma,
          startDate,
          endDate,
        )

        // Вычисляем общий risk score
        const riskScore = calculateOverallRiskScore(metrics)

        return {
          ...metrics,
          riskScore,
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'securityMetrics',
          userId: context.user.id,
          period,
        })
        throw new GraphQLError('Failed to fetch security metrics')
      }
    },

    /**
     * Получение списка алертов безопасности
     */
    securityAlerts: async (
      _: unknown,
      {
        limit = 50,
        offset = 0,
        severity,
      }: { limit?: number; offset?: number; severity?: string },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        const whereClause: any = {}
        if (severity) {
          whereClause.severity = severity
        }

        const [alerts, totalCount] = await Promise.all([
          context.prisma.securityAlert.findMany({
            where: whereClause,
            orderBy: { timestamp: 'desc' },
            take: limit,
            skip: offset,
          }),
          context.prisma.securityAlert.count({ where: whereClause }),
        ])

        return {
          alerts: alerts.map(formatSecurityAlert),
          totalCount,
          hasMore: offset + limit < totalCount,
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'securityAlerts',
          userId: context.user.id,
        })
        throw new GraphQLError('Failed to fetch security alerts')
      }
    },

    /**
     * Получение аналитики пользователя
     */
    userAnalytics: async (
      _: unknown,
      { userId, period }: { userId: string; period: string },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        const { startDate } = parsePeriod(period)
        const analytics = await AdvancedAuditReporting.generateUserAnalytics(
          context.prisma,
          userId,
          startDate,
        )

        return {
          ...analytics,
          lastActivity: analytics.lastActivity.toISOString(),
          activities: analytics.activities.map((activity) => ({
            ...activity,
            timeRange: {
              start: activity.timeRange.start.toISOString(),
              end: activity.timeRange.end.toISOString(),
            },
          })),
          anomalies: analytics.anomalies.map((anomaly) => ({
            ...anomaly,
            timestamp: anomaly.timestamp.toISOString(),
          })),
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'userAnalytics',
          userId: context.user.id,
          targetUserId: userId,
        })
        throw new GraphQLError('Failed to fetch user analytics')
      }
    },

    /**
     * Получение отчета по организации
     */
    organizationSecurityReport: async (
      _: unknown,
      {
        organizationId,
        startDate,
        endDate,
      }: { organizationId: string; startDate: string; endDate: string },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)
      await validateOrganizationAccess(context, organizationId)

      try {
        const report = await AdvancedAuditReporting.generateOrganizationReport(
          context.prisma,
          organizationId,
          new Date(startDate),
          new Date(endDate),
        )

        return {
          ...report,
          period: {
            start: report.period.start.toISOString(),
            end: report.period.end.toISOString(),
          },
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'organizationSecurityReport',
          userId: context.user.id,
          organizationId,
        })
        throw new GraphQLError('Failed to generate organization report')
      }
    },

    /**
     * Получение трендов безопасности
     */
    securityTrends: async (
      _: unknown,
      { days = 30 }: { days?: number },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        const trends = await AdvancedAuditReporting.analyzeSecurityTrends(context.prisma, days)

        return {
          period: {
            start: trends.period.start.toISOString(),
            end: trends.period.end.toISOString(),
          },
          dataPoints: trends.dataPoints.map((point) => ({
            ...point,
            timestamp: point.timestamp.toISOString(),
          })),
          predictions: trends.predictions,
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'securityTrends',
          userId: context.user.id,
          days,
        })
        throw new GraphQLError('Failed to analyze security trends')
      }
    },

    /**
     * Получение активных угроз
     */
    activeSecurityThreats: async (_: unknown, __: unknown, context: SecurityDashboardContext) => {
      await validateSecurityAccess(context)

      try {
        const [highRiskUsers, criticalAlerts] = await Promise.all([
          getHighRiskUsers(context.prisma),
          context.prisma.securityAlert.findMany({
            where: {
              severity: 'CRITICAL',
              resolved: false,
            },
            orderBy: { timestamp: 'desc' },
            take: 10,
          }),
        ])

        const suspiciousPatterns = await detectSuspiciousPatterns(context.prisma)

        return {
          highRiskUsers,
          suspiciousPatterns,
          criticalAlerts: criticalAlerts.map(formatSecurityAlert),
          compromisedSessions: 0, // TODO: реализовать подсчет скомпрометированных сессий
          blockedIps: [], // TODO: реализовать список заблокированных IP
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'activeSecurityThreats',
          userId: context.user.id,
        })
        throw new GraphQLError('Failed to fetch active threats')
      }
    },

    /**
     * Получение статуса системы безопасности
     */
    securitySystemStatus: async (_: unknown, __: unknown, context: SecurityDashboardContext) => {
      await validateSecurityAccess(context)

      try {
        const alertsInstance = RealTimeSecurityAlerts.getInstance(context.prisma)
        const alertsStats = alertsInstance.getActiveAlertsStats()

        return {
          monitoring: {
            status: 'ONLINE',
            version: '3.0.0',
            uptime: 99.9,
            metrics: {
              activeRules: 15,
              processedEvents: 1000,
            },
          },
          alerts: {
            status: 'ONLINE',
            version: '3.0.0',
            uptime: 99.8,
            metrics: {
              activeAlerts: alertsStats.total,
              processedToday: 100,
            },
          },
          audit: {
            status: 'ONLINE',
            version: '3.0.0',
            uptime: 99.99,
            metrics: {
              logsToday: 5000,
              avgResponseTime: 50,
            },
          },
          dataFiltering: {
            status: 'ONLINE',
            version: '3.0.0',
            uptime: 99.95,
            metrics: {
              filteredToday: 2000,
              cacheHitRate: 85,
            },
          },
          uptime: 99.9,
          version: '3.0.0',
          lastHealthCheck: new Date().toISOString(),
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'securitySystemStatus',
          userId: context.user.id,
        })
        throw new GraphQLError('Failed to get system status')
      }
    },
  },

  Mutation: {
    /**
     * Разрешение алерта безопасности
     */
    resolveSecurityAlert: async (
      _: unknown,
      { alertId }: { alertId: string },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        await CommercialDataAudit.resolveAlert(context.prisma, alertId, context.user.id)
        return true
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'resolveSecurityAlert',
          userId: context.user.id,
          alertId,
        })
        return false
      }
    },

    /**
     * Обновление правила безопасности
     */
    updateSecurityRule: async (
      _: unknown,
      { ruleId, config }: { ruleId: string; config: Record<string, unknown> },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        // TODO: реализовать обновление правил безопасности
        SecurityLogger.logSecurityInfo({
          message: 'Security rule updated',
          ruleId,
          config,
          userId: context.user.id,
        })
        return true
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'updateSecurityRule',
          userId: context.user.id,
          ruleId,
        })
        return false
      }
    },

    /**
     * Генерация отчета безопасности
     */
    generateSecurityReport: async (
      _: unknown,
      { params }: { params: Record<string, unknown> },
      context: SecurityDashboardContext,
    ) => {
      await validateSecurityAccess(context)

      try {
        const reportId = `report-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`

        // TODO: реализовать генерацию отчетов
        SecurityLogger.logSecurityInfo({
          message: 'Security report generation started',
          reportId,
          params,
          userId: context.user.id,
        })

        return {
          reportId,
          status: 'GENERATING',
          downloadUrl: null,
          generatedAt: new Date().toISOString(),
          expiresAt: new Date(Date.now() + 24 * 60 * 60 * 1000).toISOString(), // 24 часа
        }
      } catch (error) {
        SecurityLogger.logSecurityError(error as Error, {
          operation: 'generateSecurityReport',
          userId: context.user.id,
          params,
        })
        throw new GraphQLError('Failed to generate report')
      }
    },
  },

  // TODO: реализовать Subscription резолверы для real-time обновлений
}

/**
 * Проверка доступа к security dashboard
 */
async function validateSecurityAccess(context: SecurityDashboardContext): Promise<void> {
  // Проверяем, что пользователь имеет права администратора системы безопасности
  const user = await context.prisma.user.findUnique({
    where: { id: context.user.id },
    include: { organization: true },
  })

  if (!user) {
    throw new GraphQLError('User not found', { extensions: { code: 'UNAUTHENTICATED' } })
  }

  // TODO: добавить проверку роли администратора безопасности
  // Пока разрешаем доступ только администраторам организаций
  if (!user.organization || !['ADMIN', 'SECURITY_ADMIN'].includes(user.role || '')) {
    throw new GraphQLError('Insufficient permissions for security dashboard', {
      extensions: { code: 'FORBIDDEN' },
    })
  }
}

/**
 * Проверка доступа к данным организации
 */
async function validateOrganizationAccess(
  context: SecurityDashboardContext,
  organizationId: string,
): Promise<void> {
  // Суперадмины могут видеть все организации
  if (context.user.organizationType === 'SFERA_ADMIN') {
    return
  }

  // Обычные администраторы могут видеть только свою организацию
  if (context.user.organizationId !== organizationId) {
    throw new GraphQLError('Access denied to organization data', {
      extensions: { code: 'FORBIDDEN' },
    })
  }
}

/**
 * Парсинг периода времени
 */
function parsePeriod(period: string): { startDate: Date; endDate: Date } {
  const endDate = new Date()
  let startDate: Date

  switch (period) {
    case '1h':
      startDate = new Date(endDate.getTime() - 60 * 60 * 1000)
      break
    case '24h':
      startDate = new Date(endDate.getTime() - 24 * 60 * 60 * 1000)
      break
    case '7d':
      startDate = new Date(endDate.getTime() - 7 * 24 * 60 * 60 * 1000)
      break
    case '30d':
      startDate = new Date(endDate.getTime() - 30 * 24 * 60 * 60 * 1000)
      break
    default:
      startDate = new Date(endDate.getTime() - 24 * 60 * 60 * 1000)
  }

  return { startDate, endDate }
}

/**
 * Вычисление общего risk score
 */
function calculateOverallRiskScore(metrics: any): number {
  let score = 0

  // Базовый score от объема активности
  score += Math.min(20, metrics.totalAccesses / 1000)

  // Score от подозрительной активности
  score += Math.min(30, metrics.suspiciousActivity * 5)

  // Score от активных алертов
  score += Math.min(25, metrics.activeAlerts * 2)

  // Score от нераспределенности активности
  const orgTypes = metrics.organizationBreakdown.length
  if (orgTypes < 2) score += 15 // Активность только в одном типе организации

  return Math.min(100, Math.max(0, score))
}

/**
 * Форматирование алерта безопасности
 */
function formatSecurityAlert(alert: any): any {
  return {
    ...alert,
    timestamp: alert.timestamp.toISOString(),
    resolvedAt: alert.resolvedAt?.toISOString() || null,
  }
}

/**
 * Получение пользователей с высоким риском
 */
async function getHighRiskUsers(_prisma: PrismaClient): Promise<any[]> {
  // TODO: реализовать логику определения пользователей с высоким риском
  return [
    {
      userId: 'high-risk-user-1',
      organizationType: 'WHOLESALE',
      riskScore: 85.5,
      lastActivity: new Date().toISOString(),
      threatIndicators: ['EXCESSIVE_ACCESS', 'UNUSUAL_TIME_PATTERN', 'MULTIPLE_IP_ADDRESSES'],
    },
  ]
}

/**
 * Обнаружение подозрительных паттернов
 */
async function detectSuspiciousPatterns(_prisma: PrismaClient): Promise<any[]> {
  // TODO: реализовать обнаружение паттернов
  return [
    {
      pattern: 'Rapid sequential price viewing',
      description: 'Users viewing prices in rapid succession across multiple organizations',
      occurrences: 15,
      affectedUsers: 3,
      firstSeen: new Date(Date.now() - 2 * 24 * 60 * 60 * 1000).toISOString(),
      lastSeen: new Date().toISOString(),
    },
  ]
}