"use client"

import { useState, useEffect } from "react"
import type { Client } from "@/types/business"

// Mock clients data
const mockClients: Client[] = [
  {
    id: "1",
    name: "ABC Electronics",
    email: "orders@abcelectronics.com",
    phone: "(555) 123-4567",
    address: "123 Tech Street, Silicon Valley, CA 94000",
    creditLimit: 10000,
    outstandingAmount: 4500,
    paymentTerms: "Net 30",
    contactPerson: "John Smith",
    businessType: "Electronics Retailer",
    notes: "Large volume customer, always pays on time",
    createdAt: "2024-01-01",
  },
  {
    id: "2",
    name: "Tech Solutions Inc",
    email: "billing@techsolutions.com",
    phone: "(555) 987-6543",
    address: "456 Business Ave, Downtown, NY 10001",
    creditLimit: 15000,
    outstandingAmount: 2800,
    paymentTerms: "Net 15",
    contactPerson: "Sarah Johnson",
    businessType: "IT Services",
    notes: "Prefers email communication",
    createdAt: "2024-01-01",
  },
  {
    id: "3",
    name: "Mobile World",
    email: "contact@mobileworld.com",
    phone: "(555) 456-7890",
    address: "789 Mobile Plaza, Austin, TX 78701",
    creditLimit: 8000,
    outstandingAmount: 0,
    paymentTerms: "Net 30",
    contactPerson: "Mike Chen",
    businessType: "Mobile Phone Store",
    notes: "New customer, good payment history so far",
    createdAt: "2024-01-01",
  },
  {
    id: "4",
    name: "Digital Store",
    email: "admin@digitalstore.com",
    phone: "(555) 321-0987",
    address: "321 Digital Way, Seattle, WA 98101",
    creditLimit: 5000,
    outstandingAmount: 5200,
    paymentTerms: "Net 45",
    contactPerson: "Lisa Wong",
    businessType: "Online Retailer",
    notes: "Currently over credit limit - monitor closely",
    createdAt: "2024-01-01",
  },
]

export function useClients() {
  const [clients, setClients] = useState<Client[]>([])
  const [loading, setLoading] = useState(true)

  useEffect(() => {
    // Simulate loading from localStorage or API
    const savedClients = localStorage.getItem("wholesale-clients")
    if (savedClients) {
      setClients(JSON.parse(savedClients))
    } else {
      setClients(mockClients)
      localStorage.setItem("wholesale-clients", JSON.stringify(mockClients))
    }
    setLoading(false)
  }, [])

  const addClient = (clientData: Omit<Client, "id" | "createdAt">) => {
    const newClient: Client = {
      ...clientData,
      id: Date.now().toString(),
      createdAt: new Date().toISOString(),
    }

    const updatedClients = [...clients, newClient]
    setClients(updatedClients)
    localStorage.setItem("wholesale-clients", JSON.stringify(updatedClients))
  }

  const updateClient = (clientId: string, clientData: Omit<Client, "id" | "createdAt">) => {
    const updatedClients = clients.map((client) => (client.id === clientId ? { ...client, ...clientData } : client))
    setClients(updatedClients)
    localStorage.setItem("wholesale-clients", JSON.stringify(updatedClients))
  }

  const deleteClient = (clientId: string) => {
    const updatedClients = clients.filter((client) => client.id !== clientId)
    setClients(updatedClients)
    localStorage.setItem("wholesale-clients", JSON.stringify(updatedClients))
  }

  const addPayment = (clientId: string, amount: number, notes: string, date: string) => {
    const updatedClients = clients.map((client) =>
      client.id === clientId
        ? { ...client, outstandingAmount: Math.max(0, client.outstandingAmount - amount) }
        : client,
    )
    setClients(updatedClients)
    localStorage.setItem("wholesale-clients", JSON.stringify(updatedClients))

    // In a real app, you'd also save the payment record to a payments table
    console.log(`Payment recorded: $${amount} from client ${clientId} on ${date}. Notes: ${notes}`)
  }

  const getClientById = (clientId: string) => {
    return clients.find((client) => client.id === clientId)
  }

  const getClientsWithOutstandingCredit = () => {
    return clients.filter((client) => client.outstandingAmount > 0)
  }

  const getClientsOverCreditLimit = () => {
    return clients.filter((client) => client.outstandingAmount > client.creditLimit)
  }

  const getTotalOutstandingAmount = () => {
    return clients.reduce((total, client) => total + client.outstandingAmount, 0)
  }

  return {
    clients,
    loading,
    addClient,
    updateClient,
    deleteClient,
    addPayment,
    getClientById,
    getClientsWithOutstandingCredit,
    getClientsOverCreditLimit,
    getTotalOutstandingAmount,
  }
}