import type { VoyageRow } from '@/hooks/use-vessels-data'; function todayISO(): string { const d = new Date(); const y = d.getFullYear(); const m = String(d.getMonth() + 1).padStart(2, '0'); const day = String(d.getDate()).padStart(2, '0'); return `${y}-${m}-${day}`; } function csvEscape(value: string | number | null | undefined): string { if (value === null || value === undefined) return ''; const s = String(value); if (/[",\n\r]/.test(s)) return `"${s.replace(/"/g, '""')}"`; return s; } function downloadBlob(content: string, mime: string, filename: string): void { const blob = new Blob([content], { type: mime }); const url = URL.createObjectURL(blob); const a = document.createElement('a'); a.href = url; a.download = filename; document.body.appendChild(a); a.click(); document.body.removeChild(a); setTimeout(() => URL.revokeObjectURL(url), 1000); } export type VoyageExportContext = { voyages: VoyageRow[]; filter: string; sort: string; totals: { revenue: number; margin: number; fuelCost: number; delayCost: number; avgTce: number; voyageCount: number; }; topRoutes?: | Array<{ route: string; voyages: number; totalRevenue: number; avgTce: number; avgMargin: number; }> | undefined; }; export function exportVoyagesToCsv(ctx: VoyageExportContext): void { const headers = [ 'Voyage Ref', 'Voyage ID', 'Vessel', 'Vessel ID', 'Vessel Class', 'Route', 'Origin', 'Destination', 'Cargo Type', 'Charter Type', 'Status', 'Distance (nm)', 'Duration (days)', 'Delay (h)', 'Revenue (USD)', 'Total Cost (USD)', 'Fuel Cost (USD)', 'Port Cost (USD)', 'Delay Cost (USD)', 'Net Margin (USD)', 'Margin %', 'TCE/day (USD)', ]; const lines = [headers.map(csvEscape).join(',')]; for (const v of ctx.voyages) { lines.push( [ v.voyageRef, v.voyageId, v.vesselName, v.vesselId, v.vesselClass, v.route, v.origin, v.destination, v.cargoType, v.charterType, v.status, Math.round(v.distanceNm), Number(v.durationDays).toFixed(2), Math.round(v.delayHours), Math.round(v.estimatedRevenue), Math.round(v.operatingCost), Math.round(v.fuelCost), Math.round(v.portCost), Math.round(v.delayCost), Math.round(v.marginEstimate), (v.marginPct * 100).toFixed(2), Math.round(v.tce), ] .map(csvEscape) .join(','), ); } const filterTag = ctx.filter && ctx.filter !== 'all' ? `-${ctx.filter}` : ''; const filename = `voyage-economics${filterTag}-${todayISO()}.csv`; downloadBlob(lines.join('\n'), 'text/csv;charset=utf-8;', filename); } const fmtUsd = (n: number): string => { if (Math.abs(n) >= 1e6) return `$${(n / 1e6).toFixed(2)}M`; if (Math.abs(n) >= 1e3) return `$${(n / 1e3).toFixed(1)}K`; return `$${Math.round(n).toLocaleString()}`; }; const escapeHtml = (s: string): string => s .replace(/&/g, '&') .replace(//g, '>') .replace(/"/g, '"'); export function exportVoyagesToPdf(ctx: VoyageExportContext): void { const { voyages, totals, topRoutes, filter, sort } = ctx; const date = todayISO(); const top10 = [...voyages] .sort((a, b) => (b.estimatedRevenue || 0) - (a.estimatedRevenue || 0)) .slice(0, 10); const maxTopRouteRev = Math.max(1, ...(topRoutes ?? []).map((r) => r.totalRevenue)); const filterLabel = filter === 'all' ? 'All voyages' : `Filter: ${filter}`; const sortLabel = `Sort: ${sort}`; const html = ` Voyage Economics — ${date}

Voyage Economics Report

Generated ${date} · ${filterLabel} · ${sortLabel} · ${totals.voyageCount} voyages

Fleet Revenue

${fmtUsd(totals.revenue)}

${totals.voyageCount} voyages

Fleet Margin

${fmtUsd(totals.margin)}

${totals.revenue > 0 ? `${((totals.margin / totals.revenue) * 100).toFixed(1)}% avg` : '—'}

Avg TCE/day

${totals.avgTce > 0 ? fmtUsd(totals.avgTce) : '—'}

per vessel/day

Delay Exposure

${fmtUsd(totals.delayCost)}

fleet-wide cost

${ topRoutes && topRoutes.length > 0 ? `

Top Routes by Revenue

${topRoutes .slice(0, 10) .map((r, i) => { const pct = (r.totalRevenue / maxTopRouteRev) * 100; return ``; }) .join('')}

#	Route	Voyages	Revenue	Share	Avg Margin
${i + 1}	${escapeHtml(r.route)}	${r.voyages}	${fmtUsd(r.totalRevenue)}		${fmtUsd(r.avgMargin)}

` : '' }

Top 10 Voyages by Revenue

${top10 .map( (v) => ``, ) .join('')}

Voyage	Vessel	Route	Status	Revenue	Cost	TCE/day	Margin
${escapeHtml(v.voyageRef ?? `#${v.voyageId}`)}	${escapeHtml(v.vesselName)}	${escapeHtml(v.route)}	${escapeHtml(v.status.replace('_', ' '))}	${fmtUsd(v.estimatedRevenue)}	${fmtUsd(v.operatingCost)}	${v.tce > 0 ? fmtUsd(v.tce) : '—'}	${fmtUsd(v.marginEstimate)} (${(v.marginPct * 100).toFixed(1)}%)

`; const w = window.open('', '_blank'); if (!w) { // Pop-up blocked — fall back to a download of the HTML so the operator // can still open + print it. downloadBlob(html, 'text/html;charset=utf-8;', `voyage-economics-${date}.html`); return; } w.document.open(); w.document.write(html); w.document.close(); w.document.title = `Voyage Economics — ${date}`; }