/**
 * PowerPoint export functionality
 * Generates presentation decks from memos and models
 */

import PptxGenJS from "pptxgenjs";
import type { Memo, Company } from "@mosaiciq/contracts/rpc";

export interface PPTXOptions {
  includeCharts?: boolean;
  includeModel?: boolean;
  maxBulletPoints?: number;
}

/**
 * Export memo as PowerPoint presentation
 */
export async function exportPresentation(
  memo: Memo,
  company: Company,
  options: PPTXOptions = {}
): Promise<Buffer> {
  const {
    includeCharts = true,
    includeModel = true,
    maxBulletPoints = 5,
  } = options;

  const pptx = new (PptxGenJS as any)();
  pptx.author = "MosaicIQ";
  pptx.company = "MosaicIQ Research";
  pptx.title = `${company.name} Investment Committee Presentation`;
  pptx.subject = "Investment Research";

  const COLORS = {
    primary: "4472C4",
    secondary: "6C757D",
    accent: "28A745",
    warning: "FFC107",
    danger: "DC3545",
    dark: "363636",
    light: "F8F9FA",
  };

  // Slide 1: Title slide
  addTitleSlide(pptx, company, COLORS);

  // Slide 2: Investment Thesis
  const thesisSection = memo.sections.find((s) => s.id === "thesis");
  if (thesisSection) {
    addThesisSlide(pptx, thesisSection, COLORS);
  }

  // Slide 3: Key Drivers
  const driversSection = memo.sections.find((s) => s.id === "drivers");
  if (driversSection) {
    addDriversSlide(pptx, driversSection, COLORS, maxBulletPoints);
  }

  // Slide 4: Business Quality
  const qualitySection = memo.sections.find((s) => s.id === "quality");
  if (qualitySection) {
    addContentSlide(pptx, "Business Quality", qualitySection.content, COLORS);
  }

  // Slide 5: Financial Summary
  const financialsSection = memo.sections.find((s) => s.id === "financials");
  if (financialsSection) {
    addContentSlide(pptx, "Financial Summary", financialsSection.content, COLORS);
  }

  // Slide 6: Valuation
  const valuationSection = memo.sections.find((s) => s.id === "valuation");
  if (valuationSection) {
    addValuationSlide(pptx, valuationSection, COLORS);
  }

  // Slide 7: Key Risks
  const risksSection = memo.sections.find((s) => s.id === "risks");
  if (risksSection) {
    addRisksSlide(pptx, risksSection.content, COLORS, maxBulletPoints);
  }

  // Slide 8: Catalysts
  const catalystsSection = memo.sections.find((s) => s.id === "catalysts");
  if (catalystsSection) {
    addCatalystsSlide(pptx, catalystsSection.content, COLORS, maxBulletPoints);
  }

  // Slide 9: Conclusion/Recommendation
  addConclusionSlide(pptx, company, COLORS);

  // Generate buffer
  const buffer = await pptx.write({ outputType: "nodebuffer", compression: false }) as Buffer;
  return buffer;
}

function addTitleSlide(pptx: any, company: Company, COLORS: any) {
  const slide = pptx.addSlide();

  // Background color
  slide.background = { color: COLORS.light };

  // Company name and ticker
  slide.addText(company.name, {
    x: 0.5,
    y: 1.5,
    w: 9,
    h: 0.8,
    fontSize: 44,
    bold: true,
    color: COLORS.dark,
    fontFace: "Arial",
  });

  slide.addText(`(${company.ticker})`, {
    x: 0.5,
    y: 2.2,
    w: 9,
    h: 0.4,
    fontSize: 24,
    color: COLORS.secondary,
    fontFace: "Arial",
  });

  // Subtitle
  slide.addText("Investment Committee Presentation", {
    x: 0.5,
    y: 3.0,
    w: 9,
    h: 0.5,
    fontSize: 20,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Date
  slide.addText(new Date().toLocaleDateString(), {
    x: 0.5,
    y: 3.6,
    w: 9,
    h: 0.4,
    fontSize: 16,
    color: COLORS.secondary,
    fontFace: "Arial",
  });

  // Divider line
  slide.addShape("line", {
    x: 0.5,
    y: 4.2,
    w: 9,
    h: 0,
    line: { color: COLORS.primary, width: 2 },
  });

  // Sector info
  slide.addText(`Sector: ${company.sector}`, {
    x: 0.5,
    y: 4.5,
    w: 9,
    h: 0.4,
    fontSize: 14,
    color: COLORS.secondary,
    fontFace: "Arial",
  });
}

function addThesisSlide(pptx: any, section: any, COLORS: any) {
  const slide = pptx.addSlide();

  // Title
  slide.addText("Investment Thesis", {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Content (truncated if too long)
  const content = section.content.slice(0, 600) + (section.content.length > 600 ? "..." : "");
  slide.addText(content, {
    x: 0.5,
    y: 1.2,
    w: 9,
    h: 4,
    fontSize: 18,
    color: COLORS.dark,
    fontFace: "Arial",
    align: "justify",
  });
}

function addDriversSlide(pptx: any, section: any, COLORS: any, maxBullets: number) {
  const slide = pptx.addSlide();

  // Title
  slide.addText("Key Value Drivers", {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Parse bullets (simplified - assumes line breaks separate bullets)
  const lines = section.content.split("\n").filter((l: string) => l.trim().length > 0);
  const bullets = lines.slice(0, maxBullets);

  bullets.forEach((bullet: string, index: number) => {
    slide.addText(bullet.trim(), {
      x: 0.5,
      y: 1.2 + index * 0.5,
      w: 9,
      h: 0.4,
      fontSize: 18,
      color: COLORS.dark,
      fontFace: "Arial",
      bullet: true,
    });
  });
}

function addValuationSlide(pptx: any, section: any, COLORS: any) {
  const slide = pptx.addSlide();

  // Title
  slide.addText("Valuation", {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Content
  const content = section.content.slice(0, 500);
  slide.addText(content, {
    x: 0.5,
    y: 1.2,
    w: 9,
    h: 3,
    fontSize: 16,
    color: COLORS.dark,
    fontFace: "Arial",
    align: "justify",
  });

  // Valuation summary box
  slide.addShape("rect", {
    x: 0.5,
    y: 4.5,
    w: 9,
    h: 1.5,
    fill: { color: COLORS.light },
    line: { color: COLORS.primary, width: 1 },
  });

  slide.addText("Valuation Summary", {
    x: 0.7,
    y: 4.7,
    w: 8.6,
    h: 0.3,
    fontSize: 14,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });
}

function addRisksSlide(pptx: any, content: string, COLORS: any, maxBullets: number) {
  const slide = pptx.addSlide();

  // Title
  slide.addText("Key Risks", {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.danger,
    fontFace: "Arial",
  });

  // Parse bullets
  const lines = content.split("\n").filter((l) => l.trim().length > 0);
  const bullets = lines.slice(0, maxBullets);

  bullets.forEach((bullet, index) => {
    slide.addText(bullet.trim(), {
      x: 0.5,
      y: 1.2 + index * 0.5,
      w: 9,
      h: 0.4,
      fontSize: 16,
      color: COLORS.dark,
      fontFace: "Arial",
      bullet: true,
    });
  });
}

function addCatalystsSlide(pptx: any, content: string, COLORS: any, maxBullets: number) {
  const slide = pptx.addSlide();

  // Title
  slide.addText("Upcoming Catalysts", {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.accent,
    fontFace: "Arial",
  });

  // Parse bullets
  const lines = content.split("\n").filter((l) => l.trim().length > 0);
  const bullets = lines.slice(0, maxBullets);

  bullets.forEach((bullet, index) => {
    slide.addText(bullet.trim(), {
      x: 0.5,
      y: 1.2 + index * 0.5,
      w: 9,
      h: 0.4,
      fontSize: 16,
      color: COLORS.dark,
      fontFace: "Arial",
      bullet: true,
    });
  });
}

function addContentSlide(pptx: any, title: string, content: string, COLORS: any) {
  const slide = pptx.addSlide();

  // Title
  slide.addText(title, {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Content
  const truncated = content.slice(0, 700);
  slide.addText(truncated, {
    x: 0.5,
    y: 1.2,
    w: 9,
    h: 5,
    fontSize: 16,
    color: COLORS.dark,
    fontFace: "Arial",
    align: "justify",
  });
}

function addConclusionSlide(pptx: any, company: Company, COLORS: any) {
  const slide = pptx.addSlide();

  // Title
  slide.addText("Conclusion & Recommendation", {
    x: 0.5,
    y: 0.5,
    w: 9,
    h: 0.5,
    fontSize: 32,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Recommendation box
  slide.addShape("rect", {
    x: 0.5,
    y: 1.2,
    w: 9,
    h: 2,
    fill: { color: "E7F3FF" },
    line: { color: COLORS.primary, width: 2 },
  });

  slide.addText("Investment Recommendation", {
    x: 0.7,
    y: 1.4,
    w: 8.6,
    h: 0.4,
    fontSize: 18,
    bold: true,
    color: COLORS.primary,
    fontFace: "Arial",
  });

  // Disclaimer
  slide.addText(
    "This presentation is for informational purposes only and does not constitute investment advice. " +
    "Please refer to the full investment memo for detailed analysis and disclosures.",
    {
      x: 0.5,
      y: 5.5,
      w: 9,
      h: 1,
      fontSize: 10,
      color: COLORS.secondary,
      fontFace: "Arial",
      align: "center",
    }
  );
}

/**
 * Generate filename for presentation export
 */
export function getPresentationFilename(company: Company): string {
  const date = new Date().toISOString().split("T")[0];
  return `${company.ticker}_Presentation_${date}.pptx`;
}