torqvoice/src/features/reports/Components/csv-export.ts

import type {
  RevenueReport,
  ServiceReport,
  CustomerReport,
  InventoryReport,
  TechnicianReport,
  PartsUsageReport,
  JobAnalyticsReport,
  CustomerRetentionReport,
  TaxReport,
  PastDueInvoicesReport,
  VehicleReportData,
} from '../Schema/reportTypes'
import { formatCurrency } from '@/lib/format'

function downloadCsv(
  filename: string,
  headers: string[],
  rows: Record<string, unknown>[],
  keys: string[]
) {
  const escapeCsv = (v: unknown) => {
    const s = String(v ?? '')
    return s.includes(',') || s.includes('"') || s.includes('\n') ? `"${s.replace(/"/g, '""')}"` : s
  }

  const lines = [
    headers.map(escape).join(','),
    ...rows.map((r) => keys.map((k) => escapeCsv(r[k])).join(',')),
  ]

  const blob = new Blob([lines.join('\n')], { type: 'text/csv;charset=utf-8;' })
  const url = URL.createObjectURL(blob)
  const a = document.createElement('a')
  a.href = url
  a.download = filename
  a.click()
  URL.revokeObjectURL(url)
}

export function exportRevenueCsv(
  data: RevenueReport,
  currencyCode: string,
  headers: [string, string, string, string, string, string, string, string] = [
    'Month',
    'Revenue',
    'Collected',
    'Count',
    'Parts Cost',
    'Parts Net Profit',
    'Labor',
    'Net Profit',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.monthly.map((m) => ({
    month: m.month,
    revenue: fmt(m.revenue),
    collected: fmt(m.collected),
    count: m.count,
    partsCost: fmt(m.partsCost),
    partsNetProfit: fmt(m.partsNetProfit),
    laborRevenue: fmt(m.laborRevenue),
    netProfit: fmt(m.netProfit),
  }))
  downloadCsv('revenue-report.csv', headers, rows, [
    'month',
    'revenue',
    'collected',
    'count',
    'partsCost',
    'partsNetProfit',
    'laborRevenue',
    'netProfit',
  ])
}

export function exportServicesCsv(
  data: ServiceReport,
  headers: [string, string, string] = ['Category', 'Label', 'Count']
) {
  const rows = [
    ...data.byStatus.map((s) => ({ category: 'Status', label: s.status, count: s.count })),
    ...data.byType.map((t) => ({ category: 'Type', label: t.type, count: t.count })),
  ]
  downloadCsv('services-report.csv', headers, rows, ['category', 'label', 'count'])
}

export function exportCustomersCsv(
  data: CustomerReport,
  currencyCode: string,
  headers: [string, string, string, string] = ['Name', 'Company', 'Services', 'Total Spent']
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.topCustomers.map((c) => ({
    name: c.name,
    company: c.company ?? '',
    serviceCount: c.serviceCount,
    totalSpent: fmt(c.totalSpent),
  }))
  downloadCsv('customers-report.csv', headers, rows, [
    'name',
    'company',
    'serviceCount',
    'totalSpent',
  ])
}

export function exportInventoryCsv(
  data: InventoryReport,
  currencyCode: string,
  headers: [string, string, string, string, string] = [
    'Name',
    'Part #',
    'Quantity',
    'Min Quantity',
    'Unit Cost',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.lowStock.map((p) => ({
    name: p.name,
    partNumber: p.partNumber ?? '',
    quantity: p.unit ? `${p.quantity} ${p.unit}` : p.quantity,
    minQuantity:
      p.minQuantity != null ? (p.unit ? `${p.minQuantity} ${p.unit}` : p.minQuantity) : '',
    unitCost: p.unitCost != null ? fmt(p.unitCost) : '',
  }))
  downloadCsv('inventory-report.csv', headers, rows, [
    'name',
    'partNumber',
    'quantity',
    'minQuantity',
    'unitCost',
  ])
}

export function exportTechniciansCsv(
  data: TechnicianReport,
  currencyCode: string,
  headers: [string, string, string, string, string, string] = [
    'Technician',
    'Jobs',
    'Total Revenue',
    'Avg Revenue',
    'Total Hours',
    'Avg Hours',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.technicians.map((t) => ({
    techName: t.techName,
    jobCount: t.jobCount,
    totalRevenue: fmt(t.totalRevenue),
    avgRevenue: fmt(t.avgRevenue),
    totalHours: t.totalLaborHours.toFixed(1),
    avgHours: t.avgHours.toFixed(1),
  }))
  downloadCsv('technicians-report.csv', headers, rows, [
    'techName',
    'jobCount',
    'totalRevenue',
    'avgRevenue',
    'totalHours',
    'avgHours',
  ])
}

export function exportPartsCsv(
  data: PartsUsageReport,
  currencyCode: string,
  headers: [string, string, string, string, string, string, string] = [
    'Part Name',
    'Part #',
    'Usage Count',
    'Total Qty',
    'Revenue',
    'Cost',
    'Net Profit',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.parts.map((p) => ({
    name: p.name,
    partNumber: p.partNumber ?? '',
    usageCount: p.usageCount,
    totalQuantity: p.totalQuantity,
    totalRevenue: fmt(p.totalRevenue),
    totalCost: fmt(p.totalCost),
    netProfit: fmt(p.netProfit),
  }))
  downloadCsv('parts-usage-report.csv', headers, rows, [
    'name',
    'partNumber',
    'usageCount',
    'totalQuantity',
    'totalRevenue',
    'totalCost',
    'netProfit',
  ])
}

export function exportJobAnalyticsCsv(
  data: JobAnalyticsReport,
  currencyCode: string,
  headers: [string, string, string, string] = ['Service Type', 'Count', 'Avg Value', 'Avg Hours']
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.topServiceTypes.map((t) => ({
    type: t.type,
    count: t.count,
    avgValue: fmt(t.avgValue),
    avgHours: t.avgHours.toFixed(1),
  }))
  downloadCsv('job-analytics-report.csv', headers, rows, ['type', 'count', 'avgValue', 'avgHours'])
}

export function exportRetentionCsv(
  data: CustomerRetentionReport,
  currencyCode: string,
  headers: [string, string, string, string, string] = [
    'Customer',
    'Company',
    'Visits',
    'Total Spent',
    'Avg Days Between Visits',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.topReturning.map((c) => ({
    name: c.name,
    company: c.company ?? '',
    visitCount: c.visitCount,
    totalSpent: fmt(c.totalSpent),
    avgDaysBetweenVisits: c.avgTimeBetweenVisits ?? '',
  }))
  downloadCsv('retention-report.csv', headers, rows, [
    'name',
    'company',
    'visitCount',
    'totalSpent',
    'avgDaysBetweenVisits',
  ])
}

export function exportPastDueInvoicesCsv(
  data: PastDueInvoicesReport,
  currencyCode: string,
  headers: [string, string, string, string, string, string, string, string] = [
    'Customer',
    'Company',
    'Invoice #',
    'Total Amount',
    'Amount Paid',
    'Amount Due',
    'Due Date',
    'Days Past Due',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.invoices.map((inv) => ({
    customer: inv.customerName,
    company: inv.customerCompany ?? '',
    invoiceNumber: inv.invoiceNumber ?? '',
    totalAmount: fmt(inv.totalAmount),
    amountPaid: fmt(inv.amountPaid),
    amountDue: fmt(inv.amountDue),
    dueDate: inv.dueDate,
    daysPastDue: inv.daysPastDue,
  }))
  downloadCsv('past-due-invoices-report.csv', headers, rows, [
    'customer',
    'company',
    'invoiceNumber',
    'totalAmount',
    'amountPaid',
    'amountDue',
    'dueDate',
    'daysPastDue',
  ])
}

export function exportVehicleReportCsv(
  data: VehicleReportData,
  currencyCode: string,
  headers: [string, string, string, string, string, string, string] = [
    'Date',
    'Title',
    'Type',
    'Status',
    'Total',
    'Parts',
    'Labor Hours',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.serviceHistory.map((s) => ({
    date: s.date,
    title: s.title,
    type: s.type,
    status: s.status,
    totalAmount: fmt(s.totalAmount),
    partsCount: s.partsCount,
    laborHours: s.laborHours.toFixed(1),
  }))
  const vehicleLabel = `${data.vehicleInfo.year} ${data.vehicleInfo.make} ${data.vehicleInfo.model}`
  downloadCsv(`vehicle-report-${vehicleLabel.replace(/\s+/g, '-')}.csv`, headers, rows, [
    'date',
    'title',
    'type',
    'status',
    'totalAmount',
    'partsCount',
    'laborHours',
  ])
}

export function exportTaxCsv(
  data: TaxReport,
  currencyCode: string,
  headers: [string, string, string, string] = [
    'Month',
    'Tax Collected',
    'Taxable Amount',
    'Invoice Count',
  ]
) {
  const fmt = (n: number) => formatCurrency(n, currencyCode)
  const rows = data.monthly.map((m) => ({
    month: m.month,
    taxCollected: fmt(m.taxCollected),
    taxableAmount: fmt(m.taxableAmount),
    invoiceCount: m.invoiceCount,
  }))
  downloadCsv('tax-report.csv', headers, rows, [
    'month',
    'taxCollected',
    'taxableAmount',
    'invoiceCount',
  ])
}