import jsPDF from 'jspdf';
import type { ChecklistItem, Measurement } from '@/stores/useModelStore';

interface ReportData {
  fileName: string;
  fileSize: number;
  fineTuning: { posX: number; posY: number; posZ: number; rotY: number };
  checklist: ChecklistItem[];
  measurements: Measurement[];
  screenshots: string[];
  scaleLabel?: string;
}

const STATUS_LABELS: Record<string, string> = {
  pending: 'Pendente',
  approved: 'Aprovado',
  rejected: 'Reprovado',
};

const STATUS_COLORS: Record<string, [number, number, number]> = {
  pending: [180, 180, 50],
  approved: [34, 197, 94],
  rejected: [239, 68, 68],
};

export async function generateInspectionReport(data: ReportData) {
  const pdf = new jsPDF({ orientation: 'portrait', unit: 'mm', format: 'a4' });
  const pageW = pdf.internal.pageSize.getWidth();
  const margin = 15;
  const contentW = pageW - margin * 2;
  let y = margin;

  const addPage = () => {
    pdf.addPage();
    y = margin;
  };

  const checkSpace = (needed: number) => {
    if (y + needed > 280) addPage();
  };

  // ── Header ──
  pdf.setFillColor(15, 23, 42);
  pdf.rect(0, 0, pageW, 35, 'F');

  pdf.setFont('helvetica', 'bold');
  pdf.setFontSize(18);
  pdf.setTextColor(255, 255, 255);
  pdf.text('TrackkSteelXR', margin, 16);

  pdf.setFontSize(10);
  pdf.setFont('helvetica', 'normal');
  pdf.setTextColor(148, 163, 184);
  pdf.text('Relatório de Inspeção', margin, 24);

  const dateStr = new Date().toLocaleDateString('pt-BR', {
    day: '2-digit', month: '2-digit', year: 'numeric',
    hour: '2-digit', minute: '2-digit',
  });
  pdf.text(dateStr, pageW - margin, 24, { align: 'right' });

  y = 45;

  // ── Model Info ──
  pdf.setFontSize(12);
  pdf.setFont('helvetica', 'bold');
  pdf.setTextColor(30, 41, 59);
  pdf.text('Informações do Modelo', margin, y);
  y += 7;

  pdf.setFontSize(9);
  pdf.setFont('helvetica', 'normal');
  pdf.setTextColor(71, 85, 105);

  const infoLines = [
    ['Arquivo:', data.fileName],
    ['Tamanho:', `${(data.fileSize / (1024 * 1024)).toFixed(2)} MB`],
    ['Escala:', `${data.scaleLabel ?? '1:1'} — valores em mm reais`],
  ];
  for (const [label, value] of infoLines) {
    pdf.setFont('helvetica', 'bold');
    pdf.text(label, margin, y);
    pdf.setFont('helvetica', 'normal');
    pdf.text(value, margin + 25, y);
    y += 5;
  }

  // ── Fine Tuning ──
  y += 5;
  checkSpace(30);
  pdf.setFontSize(12);
  pdf.setFont('helvetica', 'bold');
  pdf.setTextColor(30, 41, 59);
  pdf.text('Ajuste Fino (Offsets)', margin, y);
  y += 7;

  pdf.setFontSize(9);
  pdf.setFont('helvetica', 'normal');
  pdf.setTextColor(71, 85, 105);

  const ft = data.fineTuning;
  const ftLines = [
    ['Posição X:', `${ft.posX.toFixed(3)} m`],
    ['Posição Y:', `${ft.posY.toFixed(3)} m`],
    ['Posição Z:', `${ft.posZ.toFixed(3)} m`],
    ['Rotação Y:', `${ft.rotY.toFixed(1)}°`],
  ];
  for (const [label, value] of ftLines) {
    pdf.setFont('helvetica', 'bold');
    pdf.text(label, margin, y);
    pdf.setFont('helvetica', 'normal');
    pdf.text(value, margin + 25, y);
    y += 5;
  }

  // ── Checklist ──
  y += 5;
  checkSpace(50);
  pdf.setFontSize(12);
  pdf.setFont('helvetica', 'bold');
  pdf.setTextColor(30, 41, 59);
  pdf.text('Checklist de Inspeção', margin, y);
  y += 3;

  // Summary bar
  const approved = data.checklist.filter(i => i.status === 'approved').length;
  const rejected = data.checklist.filter(i => i.status === 'rejected').length;
  const pending = data.checklist.filter(i => i.status === 'pending').length;
  y += 5;
  pdf.setFontSize(8);
  pdf.setFont('helvetica', 'normal');
  pdf.setTextColor(71, 85, 105);
  pdf.text(`Aprovados: ${approved}  |  Reprovados: ${rejected}  |  Pendentes: ${pending}`, margin, y);
  y += 7;

  for (const item of data.checklist) {
    checkSpace(20);
    const color = STATUS_COLORS[item.status] || [100, 100, 100];

    // Status pill
    pdf.setFillColor(color[0], color[1], color[2]);
    pdf.roundedRect(margin, y - 3.5, 18, 5, 1.5, 1.5, 'F');
    pdf.setFontSize(7);
    pdf.setFont('helvetica', 'bold');
    pdf.setTextColor(255, 255, 255);
    pdf.text(STATUS_LABELS[item.status] || item.status, margin + 9, y, { align: 'center' });

    // Label
    pdf.setFontSize(9);
    pdf.setFont('helvetica', 'normal');
    pdf.setTextColor(30, 41, 59);
    pdf.text(item.label, margin + 22, y);
    y += 5;

    // Note
    if (item.note) {
      pdf.setFontSize(8);
      pdf.setTextColor(100, 116, 139);
      const noteLines = pdf.splitTextToSize(`Nota: ${item.note}`, contentW - 22);
      pdf.text(noteLines, margin + 22, y);
      y += noteLines.length * 4;
    }

    if (item.audioUrl) {
      pdf.setFontSize(7);
      pdf.setTextColor(100, 116, 139);
      pdf.text('🎙️ Áudio gravado anexado', margin + 22, y);
      y += 4;
    }

    y += 3;
  }

  // ── Measurements ──
  if (data.measurements.length > 0) {
    y += 3;
    checkSpace(30);
    pdf.setFontSize(12);
    pdf.setFont('helvetica', 'bold');
    pdf.setTextColor(30, 41, 59);
    pdf.text('Medições', margin, y);
    y += 7;

    // Table header
    pdf.setFillColor(241, 245, 249);
    pdf.rect(margin, y - 4, contentW, 6, 'F');
    pdf.setFontSize(8);
    pdf.setFont('helvetica', 'bold');
    pdf.setTextColor(71, 85, 105);
    pdf.text('#', margin + 2, y);
    pdf.text('Ponto A (mm)', margin + 12, y);
    pdf.text('Ponto B (mm)', margin + 65, y);
    pdf.text('Distância', margin + 120, y);
    y += 6;

    pdf.setFont('helvetica', 'normal');
    pdf.setFontSize(8);
    pdf.setTextColor(30, 41, 59);

    data.measurements.forEach((m, idx) => {
      checkSpace(8);
      if (idx % 2 === 0) {
        pdf.setFillColor(248, 250, 252);
        pdf.rect(margin, y - 4, contentW, 6, 'F');
      }
      const fmtPt = (p: { x: number; y: number; z: number }) =>
        `${(p.x * 1000).toFixed(1)}, ${(p.y * 1000).toFixed(1)}, ${(p.z * 1000).toFixed(1)}`;

      pdf.text(`${idx + 1}`, margin + 2, y);
      pdf.text(fmtPt(m.pointA), margin + 12, y);
      pdf.text(fmtPt(m.pointB), margin + 65, y);
      pdf.setFont('helvetica', 'bold');
      pdf.text(`${m.distanceMM.toFixed(1)} mm`, margin + 120, y);
      pdf.setFont('helvetica', 'normal');
      y += 6;
    });
  }

  // ── Screenshots ──
  if (data.screenshots.length > 0) {
    addPage();
    pdf.setFontSize(12);
    pdf.setFont('helvetica', 'bold');
    pdf.setTextColor(30, 41, 59);
    pdf.text('Screenshots / Anotações', margin, y);
    y += 8;

    for (let i = 0; i < data.screenshots.length; i++) {
      checkSpace(100);
      try {
        const imgW = contentW;
        const imgH = imgW * 0.56; // ~16:9
        pdf.addImage(data.screenshots[i], 'PNG', margin, y, imgW, imgH);
        y += imgH + 3;

        pdf.setFontSize(7);
        pdf.setFont('helvetica', 'normal');
        pdf.setTextColor(148, 163, 184);
        pdf.text(`Captura ${i + 1} de ${data.screenshots.length}`, margin, y);
        y += 8;
      } catch {
        pdf.setFontSize(8);
        pdf.setTextColor(200, 50, 50);
        pdf.text(`[Erro ao inserir screenshot ${i + 1}]`, margin, y);
        y += 8;
      }
    }
  }

  // ── Footer on last page ──
  const pageH = pdf.internal.pageSize.getHeight();
  pdf.setFillColor(241, 245, 249);
  pdf.rect(0, pageH - 12, pageW, 12, 'F');
  pdf.setFontSize(7);
  pdf.setFont('helvetica', 'normal');
  pdf.setTextColor(148, 163, 184);
  pdf.text('Gerado por TrackkSteelXR', margin, pageH - 5);
  pdf.text(`Página ${pdf.getNumberOfPages()}`, pageW - margin, pageH - 5, { align: 'right' });

  // Save
  const safeName = data.fileName.replace(/\.[^.]+$/, '');
  pdf.save(`Inspecao_${safeName}_${new Date().toISOString().slice(0, 10)}.pdf`);
}