// VendorsTable.tsx
'use client'

import { ColumnDef } from '@tanstack/react-table'
import { DataTable } from './DataTable'
import { Button } from '../ui/button'
import DialogWrapper from '../dialogs/DialogWrapper'
import CreateVendorForm from '../forms/CreateVendorForm'
import { useState } from 'react'
import { fetchVendorsClient } from '@/lib/helper/fetchVendors'
import { Vendor, VendorType, VendorStatus } from '@prisma/client'
import { Badge } from '../ui/badge'
import { useRouter } from 'next/navigation'

interface VendorRow {
    id: string
    slug: string
    name: string
    type: VendorType
    description?: string | null
    website?: string | null
    contactPerson?: string | null
    email?: string | null
    phone?: string | null
    status: VendorStatus
    isBooked: boolean
    bookedDate?: Date | null
    quotedPrice?: number | null
    finalCost?: number | null
    depositPaid?: number | null
    depositDueDate?: Date | null
    finalPaymentDue?: Date | null
    createdAt: Date
}

interface Props {
    initialVendors: VendorRow[]
}

// Format vendor type for display
const formatVendorType = (type: VendorType): string => {
    return type.charAt(0) + type.slice(1).toLowerCase()
}

// Format vendor status with colors
const formatVendorStatus = (status: VendorStatus): { label: string, color: string } => {
    const colors: Record<VendorStatus, string> = {
        RESEARCHING: 'bg-gray-100 text-gray-800',
        CONTACTING: 'bg-blue-100 text-blue-800',
        RESPONDED: 'bg-yellow-100 text-yellow-800',
        PROPOSAL_RECEIVED: 'bg-purple-100 text-purple-800',
        NEGOTIATING: 'bg-orange-100 text-orange-800',
        CONTRACT_SENT: 'bg-indigo-100 text-indigo-800',
        CONTRACT_SIGNED: 'bg-green-100 text-green-800',
        DECLINED: 'bg-red-100 text-red-800',
        BACKUP: 'bg-slate-100 text-slate-800',
    }
    
    const label = status.charAt(0) + status.slice(1).toLowerCase().replace('_', ' ')
    return { label, color: colors[status] }
}

// Format currency
const formatCurrency = (amount?: number | null): string => {
    if (!amount) return '—'
    return new Intl.NumberFormat('en-US', {
        style: 'currency',
        currency: 'USD',
    }).format(amount)
}

// Format date
const formatDate = (date?: Date | null): string => {
    if (!date) return '—'
    return new Date(date).toLocaleDateString()
}

const columns: ColumnDef<VendorRow>[] = [
    {
        accessorKey: 'name',
        header: 'Name',
        cell: ({ row }) => (
            <div>
                <div className="font-medium">{row.original.name}</div>
                {row.original.contactPerson && (
                    <div className="text-sm text-muted-foreground">
                        {row.original.contactPerson}
                    </div>
                )}
            </div>
        ),
    },
    {
        accessorKey: 'type',
        header: 'Type',
        cell: ({ row }) => (
            <Badge variant="outline" className="capitalize">
                {formatVendorType(row.original.type)}
            </Badge>
        ),
    },
    {
        accessorKey: 'contact',
        header: 'Contact',
        cell: ({ row }) => (
            <div className="text-sm">
                {row.original.email && (
                    <div className="truncate max-w-[180px]">{row.original.email}</div>
                )}
                {row.original.phone && (
                    <div>{row.original.phone}</div>
                )}
            </div>
        ),
    },
    {
        accessorKey: 'status',
        header: 'Status',
        cell: ({ row }) => {
            const status = formatVendorStatus(row.original.status)
            return (
                <Badge className={status.color}>
                    {status.label}
                </Badge>
            )
        },
    },
    {
        accessorKey: 'isBooked',
        header: 'Booked',
        cell: ({ row }) => (
            <Badge variant={row.original.isBooked ? "default" : "outline"}>
                {row.original.isBooked ? 'Booked' : 'Not Booked'}
            </Badge>
        ),
    },
    {
        accessorKey: 'cost',
        header: 'Cost',
        cell: ({ row }) => (
            <div className="text-sm">
                {row.original.finalCost ? (
                    <div className="font-medium">{formatCurrency(row.original.finalCost)}</div>
                ) : row.original.quotedPrice ? (
                    <div className="font-medium">{formatCurrency(row.original.quotedPrice)}</div>
                ) : (
                    <div className="text-muted-foreground">—</div>
                )}
            </div>
        ),
    },
    {
        accessorKey: 'deposit',
        header: 'Deposit',
        cell: ({ row }) => (
            <div className="text-sm">
                {row.original.depositPaid ? (
                    <div>{formatCurrency(row.original.depositPaid)}</div>
                ) : (
                    <div className="text-muted-foreground">—</div>
                )}
                {row.original.depositDueDate && (
                    <div className="text-xs text-muted-foreground">
                        Due: {formatDate(row.original.depositDueDate)}
                    </div>
                )}
            </div>
        ),
    },
    {
        accessorKey: 'createdAt',
        header: 'Added',
        cell: ({ row }) => formatDate(row.original.createdAt),
    },
]

export default function VendorsTable({ initialVendors }: Props) {
    const [isDialogOpen, setIsDialogOpen] = useState(false)
    const [vendors, setVendors] = useState<VendorRow[]>(initialVendors)
    const router = useRouter()

    async function refreshVendors() {
        try {
            const updated = await fetchVendorsClient()
            setVendors(updated)
        } catch (err) {
            console.error('Failed to refresh vendors:', err)
        }
    }

    // Handle row click
    const handleRowClick = (vendor: VendorRow) => {
        router.push(`/vendors/${vendor.slug}`)
    }

    return (
        <div className="space-y-4">
            <div className="flex justify-between items-center">
                <div>
                    <h2 className="text-2xl font-bold tracking-tight">Vendors</h2>
                    <p className="text-muted-foreground">
                        Manage your wedding vendors and suppliers
                    </p>
                </div>
                <Button 
                    onClick={() => setIsDialogOpen(true)}
                >
                    Add Vendor
                </Button>
            </div>
            
            <DataTable 
                columns={columns} 
                data={vendors} 
                onRowClick={handleRowClick}
            />
            
            <DialogWrapper
                title="Add New Vendor"
                description="Enter the vendor information below"
                open={isDialogOpen}
                onOpenChange={setIsDialogOpen}
                form={
                    <CreateVendorForm 
                        onSuccess={async () => {
                            await refreshVendors()
                            setIsDialogOpen(false)
                        }} 
                    />
                }
            />
        </div>
    )
}