add protocol admin dashboard and governance actions

src/hooks/useAdmin.ts

@@ -0,0 +1,160 @@
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { api } from '../services/api'
+
+export interface AdminProtocolParameters {
+  maxLoanAmount: number
+  interestRate: number
+  repaymentWindowDays: number
+  lateFeeRate: number
+}
+
+export interface AdminProtocolStats {
+  totalVolume: number
+  activeLoans: number
+  approvedVendors: number
+  pendingApprovals: number
+  auditEvents: number
+}
+
+export interface PendingVendor {
+  id: string
+  name: string
+  walletAddress: string
+  category: string
+  submittedAt: string
+}
+
+export interface PendingLoan {
+  id: string
+  borrower: string
+  vendor: string
+  amount: number
+  purpose: string
+  requestedAt: string
+}
+
+export interface AuditLogEntry {
+  id: string
+  actor: string
+  action: string
+  target: string
+  createdAt: string
+}
+
+export interface PaginatedAuditLogs {
+  data: AuditLogEntry[]
+  total: number
+  page: number
+  limit: number
+  totalPages: number
+}
+
+export function useAdmin(page = 1) {
+  const queryClient = useQueryClient()
+
+  const protocolParametersQuery = useQuery({
+    queryKey: ['admin-parameters'],
+    queryFn: async () => {
+      const res = await api.get<AdminProtocolParameters>('/admin/protocol-parameters')
+      return res.data
+    },
+  })
+
+  const protocolStatsQuery = useQuery({
+    queryKey: ['admin-stats'],
+    queryFn: async () => {
+      const res = await api.get<AdminProtocolStats>('/admin/stats')
+      return res.data
+    },
+  })
+
+  const vendorQueueQuery = useQuery({
+    queryKey: ['admin-vendor-queue'],
+    queryFn: async () => {
+      const res = await api.get<PendingVendor[]>('/admin/vendors/approvals')
+      return res.data
+    },
+  })
+
+  const loanQueueQuery = useQuery({
+    queryKey: ['admin-loan-queue'],
+    queryFn: async () => {
+      const res = await api.get<PendingLoan[]>('/admin/loans/review')
+      return res.data
+    },
+  })
+
+  const auditLogsQuery = useQuery({
+    queryKey: ['admin-audit-logs', page],
+    queryFn: async () => {
+      const res = await api.get<PaginatedAuditLogs>(`/admin/audit-logs?page=${page}&limit=10`)
+      return res.data
+    },
+  })
+
+  const updateParametersMutation = useMutation({
+    mutationFn: async (params: AdminProtocolParameters) => {
+      const res = await api.put('/admin/protocol-parameters', params)
+      return res.data
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin-parameters'] })
+      queryClient.invalidateQueries({ queryKey: ['admin-stats'] })
+    },
+  })
+
+  const approveVendorMutation = useMutation({
+    mutationFn: async (id: string) => {
+      const res = await api.post(`/admin/vendors/${id}/approve`)
+      return res.data
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin-vendor-queue'] })
+      queryClient.invalidateQueries({ queryKey: ['admin-stats'] })
+    },
+  })
+
+  const rejectVendorMutation = useMutation({
+    mutationFn: async (id: string) => {
+      const res = await api.post(`/admin/vendors/${id}/reject`)
+      return res.data
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin-vendor-queue'] })
+    },
+  })
+
+  const approveLoanMutation = useMutation({
+    mutationFn: async (id: string) => {
+      const res = await api.post(`/admin/loans/${id}/approve`)
+      return res.data
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin-loan-queue'] })
+      queryClient.invalidateQueries({ queryKey: ['admin-stats'] })
+    },
+  })
+
+  const rejectLoanMutation = useMutation({
+    mutationFn: async (id: string) => {
+      const res = await api.post(`/admin/loans/${id}/reject`)
+      return res.data
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin-loan-queue'] })
+    },
+  })
+
+  return {
+    protocolParametersQuery,
+    protocolStatsQuery,
+    vendorQueueQuery,
+    loanQueueQuery,
+    auditLogsQuery,
+    updateParametersMutation,
+    approveVendorMutation,
+    rejectVendorMutation,
+    approveLoanMutation,
+    rejectLoanMutation,
+  }
+}