import os
from reportlab.lib.pagesizes import letter
from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer
from reportlab.lib.styles import getSampleStyleSheet

def export_report_to_pdf(query, summary, citations, structures, funding_data, regulation_data, filename="output.pdf"):
    """Export research report to PDF."""
    filepath = os.path.join(os.getcwd(), filename)
    doc = SimpleDocTemplate(filepath, pagesize=letter)
    styles = getSampleStyleSheet()
    story = []

    # Title
    story.append(Paragraph(f"GENESIS-AI Research Report", styles["Title"]))
    story.append(Spacer(1, 12))

    # Query
    story.append(Paragraph(f"<b>Query:</b> {query}", styles["Normal"]))
    story.append(Spacer(1, 12))

    # Summary
    story.append(Paragraph("<b>Summary:</b>", styles["Heading2"]))
    story.append(Paragraph(summary, styles["Normal"]))
    story.append(Spacer(1, 12))

    # Citations
    if citations:
        story.append(Paragraph("<b>Citations:</b>", styles["Heading2"]))
        for c in citations:
            story.append(Paragraph(f"{c.get('type', '')}: {c.get('url', '')}", styles["Normal"]))
        story.append(Spacer(1, 12))

    # Structures
    if structures:
        story.append(Paragraph("<b>Structures:</b>", styles["Heading2"]))
        for s in structures:
            story.append(Paragraph(str(s), styles["Normal"]))
        story.append(Spacer(1, 12))

    # Funding
    if funding_data:
        story.append(Paragraph("<b>Funding Data:</b>", styles["Heading2"]))
        for f in funding_data:
            story.append(Paragraph(str(f), styles["Normal"]))
        story.append(Spacer(1, 12))

    # Regulation
    if regulation_data:
        story.append(Paragraph("<b>Regulatory Info:</b>", styles["Heading2"]))
        for r in regulation_data:
            story.append(Paragraph(str(r), styles["Normal"]))
        story.append(Spacer(1, 12))

    doc.build(story)
    return filepath