import { apiClient } from "@/lib/api-client"

export interface ComplianceStatus {
  KCANG: "GREEN" | "YELLOW" | "RED"
  FINANCE: "GREEN" | "YELLOW" | "RED"
  DSGVO: "GREEN" | "YELLOW" | "RED"
  VEREIN: "GREEN" | "YELLOW" | "RED"
}

export interface ComplianceDeadline {
  id: string
  clubId: string
  area: "KCANG" | "FINANCE" | "DSGVO" | "VEREIN"
  title: string
  description: string | null
  dueDate: string
  isRecurring: boolean
  recurrenceRule: string | null
  completedAt: string | null
  completedBy: string | null
}

export interface ComplianceDashboardResponse {
  status: ComplianceStatus
  upcomingDeadlines: ComplianceDeadline[]
  overdueDeadlines: ComplianceDeadline[]
}

export interface RetentionReport {
  totalAnonymized: number
  upcomingAnonymizations: number
  currentCutoffDate: string
  retentionSchedule: RetentionScheduleItem[]
}

export interface RetentionScheduleItem {
  legalBasis: string
  description: string
  retentionYears: number
}

export interface RetentionPreview {
  affectedCount: number
  items: RetentionPreviewItem[]
}

export interface RetentionPreviewItem {
  memberId: string
  membershipNumber: string
  membershipDate: string
  reason: string
}

// --- Mock data for development ---

const mockDashboard: ComplianceDashboardResponse = {
  status: {
    KCANG: "GREEN",
    FINANCE: "YELLOW",
    DSGVO: "GREEN",
    VEREIN: "GREEN",
  },
  upcomingDeadlines: [
    {
      id: "d1",
      clubId: "c1",
      area: "FINANCE",
      title: "Kassenprüfung durchführen",
      description: "Prüfung der Vereinskasse durch gewählte Kassenprüfer",
      dueDate: new Date(Date.now() + 14 * 86400000).toISOString().split("T")[0],
      isRecurring: true,
      recurrenceRule: "YEARLY",
      completedAt: null,
      completedBy: null,
    },
    {
      id: "d2",
      clubId: "c1",
      area: "DSGVO",
      title: "VVT aktualisieren",
      description:
        "Jährliche Überprüfung des Verzeichnisses von Verarbeitungstätigkeiten",
      dueDate: new Date(Date.now() + 28 * 86400000).toISOString().split("T")[0],
      isRecurring: true,
      recurrenceRule: "YEARLY",
      completedAt: null,
      completedBy: null,
    },
  ],
  overdueDeadlines: [
    {
      id: "d3",
      clubId: "c1",
      area: "FINANCE",
      title: "EÜR erstellen",
      description: "Einnahmen-Überschuss-Rechnung für das Vorjahr",
      dueDate: new Date(Date.now() - 10 * 86400000).toISOString().split("T")[0],
      isRecurring: true,
      recurrenceRule: "YEARLY",
      completedAt: null,
      completedBy: null,
    },
  ],
}

const mockRetentionReport: RetentionReport = {
  totalAnonymized: 3,
  upcomingAnonymizations: 1,
  currentCutoffDate: new Date(Date.now() - 5 * 365 * 86400000)
    .toISOString()
    .split("T")[0],
  retentionSchedule: [
    {
      legalBasis: "KCanG §24",
      description: "Mitgliederdaten nach Austritt",
      retentionYears: 5,
    },
    {
      legalBasis: "AO §147",
      description: "Finanzdaten (Aufbewahrungspflicht)",
      retentionYears: 10,
    },
    {
      legalBasis: "DSGVO",
      description: "Kommunikationsdaten (inaktiv)",
      retentionYears: 2,
    },
  ],
}

// --- API functions ---

export async function getComplianceDashboard(
  upcomingDays = 30
): Promise<ComplianceDashboardResponse> {
  if (process.env.NEXT_PUBLIC_USE_MOCK === "true") {
    return mockDashboard
  }
  return apiClient<ComplianceDashboardResponse>(
    `/api/v1/compliance/dashboard?upcomingDays=${upcomingDays}`
  )
}

export async function getRetentionReport(): Promise<RetentionReport> {
  if (process.env.NEXT_PUBLIC_USE_MOCK === "true") {
    return mockRetentionReport
  }
  return apiClient<RetentionReport>("/api/v1/compliance/dashboard/retention")
}

export async function previewRetention(): Promise<RetentionPreview> {
  if (process.env.NEXT_PUBLIC_USE_MOCK === "true") {
    return { affectedCount: 0, items: [] }
  }
  return apiClient<RetentionPreview>(
    "/api/v1/compliance/dashboard/retention/preview",
    {
      method: "POST",
    }
  )
}

export async function completeDeadline(
  deadlineId: string,
  completedBy: string
): Promise<ComplianceDeadline> {
  if (process.env.NEXT_PUBLIC_USE_MOCK === "true") {
    return {
      ...mockDashboard.upcomingDeadlines[0],
      completedAt: new Date().toISOString(),
      completedBy,
    }
  }
  return apiClient<ComplianceDeadline>(
    `/api/v1/compliance/deadlines/${deadlineId}/complete`,
    {
      method: "POST",
      body: JSON.stringify({ completedBy }),
    }
  )
}