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pdf_export.py
Generates formatted PDF exports for study notes and quiz results using reportlab.
"""
import io
from datetime import date
from reportlab.lib.pagesizes import A4
from reportlab.lib import colors
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.units import mm
from reportlab.platypus import (
SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle,
HRFlowable, KeepTogether
)
from reportlab.lib.enums import TA_CENTER, TA_LEFT
# ── Brand colours ─────────────────────────────────────────────────────────────
PURPLE = colors.HexColor("#6c47ff")
ORANGE = colors.HexColor("#f97316")
LIGHT = colors.HexColor("#f7f4ef")
MUTED = colors.HexColor("#6b6880")
DARK = colors.HexColor("#1a1523")
WHITE = colors.white
GREEN = colors.HexColor("#10b981")
RED = colors.HexColor("#ef4444")
def _base_styles():
base = getSampleStyleSheet()
styles = {
"title": ParagraphStyle(
"Title2", parent=base["Title"],
fontSize=26, textColor=PURPLE, spaceAfter=4,
fontName="Helvetica-Bold", alignment=TA_CENTER,
),
"subtitle": ParagraphStyle(
"Subtitle", parent=base["Normal"],
fontSize=11, textColor=MUTED, spaceAfter=16,
fontName="Helvetica", alignment=TA_CENTER,
),
"section_head": ParagraphStyle(
"SectionHead", parent=base["Heading2"],
fontSize=13, textColor=PURPLE, spaceBefore=14, spaceAfter=6,
fontName="Helvetica-Bold",
),
"body": ParagraphStyle(
"Body2", parent=base["Normal"],
fontSize=10, textColor=DARK, spaceAfter=6,
fontName="Helvetica", leading=15,
),
"term": ParagraphStyle(
"Term", parent=base["Normal"],
fontSize=10, textColor=PURPLE, spaceAfter=2,
fontName="Helvetica-Bold",
),
"definition": ParagraphStyle(
"Def", parent=base["Normal"],
fontSize=9.5, textColor=MUTED, spaceAfter=8,
fontName="Helvetica", leading=14,
),
"summary_box": ParagraphStyle(
"SummaryBox", parent=base["Normal"],
fontSize=10, textColor=DARK, spaceAfter=6,
fontName="Helvetica-Oblique", leading=15,
),
"label": ParagraphStyle(
"Label", parent=base["Normal"],
fontSize=8, textColor=MUTED, spaceAfter=2,
fontName="Helvetica", alignment=TA_CENTER,
),
"score_big": ParagraphStyle(
"ScoreBig", parent=base["Normal"],
fontSize=40, textColor=PURPLE, spaceAfter=4,
fontName="Helvetica-Bold", alignment=TA_CENTER,
),
"feedback": ParagraphStyle(
"Feedback", parent=base["Normal"],
fontSize=12, textColor=DARK, spaceAfter=12,
fontName="Helvetica-Bold", alignment=TA_CENTER,
),
"q_text": ParagraphStyle(
"QText", parent=base["Normal"],
fontSize=10, textColor=DARK, spaceAfter=3,
fontName="Helvetica-Bold",
),
"q_detail": ParagraphStyle(
"QDetail", parent=base["Normal"],
fontSize=9.5, textColor=MUTED, spaceAfter=2,
fontName="Helvetica",
),
}
return styles
def export_study_notes_pdf(content: dict) -> bytes:
"""Generate a PDF for study notes. Returns bytes."""
buffer = io.BytesIO()
doc = SimpleDocTemplate(
buffer, pagesize=A4,
leftMargin=20*mm, rightMargin=20*mm,
topMargin=18*mm, bottomMargin=18*mm,
)
s = _base_styles()
story = []
# Header
story.append(Paragraph("LearnCraft", s["title"]))
story.append(Paragraph("Personalized Study Notes", s["subtitle"]))
story.append(HRFlowable(width="100%", thickness=2, color=PURPLE, spaceAfter=12))
# Meta table
meta_data = [
["Topic", content.get("topic", "—"), "Level", content.get("level", "—")],
["Style", content.get("style", "—"), "Read Time", content.get("read_time", "—")],
["Generated", str(date.today()), "", ""],
]
meta_table = Table(meta_data, colWidths=[30*mm, 65*mm, 30*mm, 50*mm])
meta_table.setStyle(TableStyle([
("FONTNAME", (0,0), (-1,-1), "Helvetica"),
("FONTSIZE", (0,0), (-1,-1), 9),
("FONTNAME", (0,0), (0,-1), "Helvetica-Bold"),
("FONTNAME", (2,0), (2,-1), "Helvetica-Bold"),
("TEXTCOLOR", (0,0), (0,-1), PURPLE),
("TEXTCOLOR", (2,0), (2,-1), PURPLE),
("TEXTCOLOR", (1,0), (1,-1), DARK),
("TEXTCOLOR", (3,0), (3,-1), DARK),
("BACKGROUND", (0,0), (-1,-1), LIGHT),
("ROWBACKGROUNDS", (0,0), (-1,-1), [LIGHT, WHITE]),
("GRID", (0,0), (-1,-1), 0.5, colors.HexColor("#e2ddf5")),
("ROUNDEDCORNERS", [4]),
("TOPPADDING", (0,0), (-1,-1), 5),
("BOTTOMPADDING",(0,0), (-1,-1), 5),
("LEFTPADDING", (0,0), (-1,-1), 8),
]))
story.append(meta_table)
story.append(Spacer(1, 10))
# Sections
for section in content.get("sections", []):
story.append(Paragraph(f"▸ {section['title']}", s["section_head"]))
story.append(HRFlowable(width="100%", thickness=0.5, color=colors.HexColor("#e2ddf5"), spaceAfter=6))
story.append(Paragraph(section["content"], s["body"]))
# Key terms
key_terms = content.get("key_terms", [])
if key_terms:
story.append(Spacer(1, 6))
story.append(Paragraph("Key Terms", s["section_head"]))
story.append(HRFlowable(width="100%", thickness=0.5, color=colors.HexColor("#e2ddf5"), spaceAfter=8))
for term in key_terms:
story.append(Paragraph(term["term"], s["term"]))
story.append(Paragraph(term["definition"], s["definition"]))
# Summary
summary = content.get("summary", "")
if summary:
story.append(Spacer(1, 4))
story.append(Paragraph("Quick Summary", s["section_head"]))
summary_table = Table([[Paragraph(f'"{summary}"', s["summary_box"])]], colWidths=[170*mm])
summary_table.setStyle(TableStyle([
("BACKGROUND", (0,0), (-1,-1), colors.HexColor("#ede9fe")),
("LEFTPADDING", (0,0), (-1,-1), 12),
("RIGHTPADDING", (0,0), (-1,-1), 12),
("TOPPADDING", (0,0), (-1,-1), 10),
("BOTTOMPADDING",(0,0), (-1,-1), 10),
("ROUNDEDCORNERS", [8]),
]))
story.append(summary_table)
# Footer
story.append(Spacer(1, 16))
story.append(HRFlowable(width="100%", thickness=1, color=colors.HexColor("#e2ddf5"), spaceAfter=6))
story.append(Paragraph(f"Generated by LearnCraft · {date.today()}", s["label"]))
doc.build(story)
return buffer.getvalue()
def export_quiz_results_pdf(quiz: dict, results: dict, answers: dict) -> bytes:
"""Generate a PDF for quiz results. Returns bytes."""
buffer = io.BytesIO()
doc = SimpleDocTemplate(
buffer, pagesize=A4,
leftMargin=20*mm, rightMargin=20*mm,
topMargin=18*mm, bottomMargin=18*mm,
)
s = _base_styles()
story = []
# Header
story.append(Paragraph("LearnCraft", s["title"]))
story.append(Paragraph("Quiz Results Report", s["subtitle"]))
story.append(HRFlowable(width="100%", thickness=2, color=PURPLE, spaceAfter=14))
# Score hero
score = results["score_percent"]
score_col = GREEN if score >= 60 else RED
story.append(Paragraph(f"{score}%", ParagraphStyle(
"BigScore", fontSize=48, textColor=score_col,
fontName="Helvetica-Bold", alignment=TA_CENTER, spaceAfter=4,
)))
story.append(Paragraph(
f"{results['correct']} / {results['total']} correct · {results['feedback']}",
s["feedback"]
))
story.append(Spacer(1, 6))
# Meta
meta_data = [
["Topic", quiz.get("topic", "—"), "Difficulty", quiz.get("difficulty", "—")],
["Questions", str(results["total"]), "Date", str(date.today())],
]
meta_table = Table(meta_data, colWidths=[30*mm, 65*mm, 30*mm, 50*mm])
meta_table.setStyle(TableStyle([
("FONTNAME", (0,0), (-1,-1), "Helvetica"),
("FONTSIZE", (0,0), (-1,-1), 9),
("FONTNAME", (0,0), (0,-1), "Helvetica-Bold"),
("FONTNAME", (2,0), (2,-1), "Helvetica-Bold"),
("TEXTCOLOR", (0,0), (0,-1), PURPLE),
("TEXTCOLOR", (2,0), (2,-1), PURPLE),
("BACKGROUND", (0,0), (-1,-1), LIGHT),
("ROWBACKGROUNDS", (0,0), (-1,-1), [LIGHT, WHITE]),
("GRID", (0,0), (-1,-1), 0.5, colors.HexColor("#e2ddf5")),
("TOPPADDING", (0,0), (-1,-1), 5),
("BOTTOMPADDING",(0,0), (-1,-1), 5),
("LEFTPADDING", (0,0), (-1,-1), 8),
]))
story.append(meta_table)
story.append(Spacer(1, 14))
# Answer review
story.append(Paragraph("Answer Review", s["section_head"]))
story.append(HRFlowable(width="100%", thickness=0.5, color=colors.HexColor("#e2ddf5"), spaceAfter=8))
for i, q in enumerate(quiz.get("questions", [])):
correct = results["details"][i]["correct"]
user_ans = str(answers.get(i, "No answer"))
right_ans = results["details"][i]["correct_answer"]
explanation= results["details"][i].get("explanation", "")
icon = "✓" if correct else "✗"
bg_color = colors.HexColor("#d1fae5") if correct else colors.HexColor("#fee2e2")
icon_color = GREEN if correct else RED
block = [
[
Paragraph(f"<font color='{'#10b981' if correct else '#ef4444'}'><b>{icon}</b></font> Q{i+1}: {q['question']}", s["q_text"]),
],
[
Paragraph(
f"Your answer: <font color='{'#10b981' if correct else '#ef4444'}'><b>{user_ans}</b></font> | "
f"Correct: <font color='#10b981'><b>{right_ans}</b></font>"
+ (f"<br/><i>{explanation}</i>" if explanation else ""),
s["q_detail"]
),
],
]
t = Table(block, colWidths=[170*mm])
t.setStyle(TableStyle([
("BACKGROUND", (0,0), (-1,-1), bg_color),
("LEFTPADDING", (0,0), (-1,-1), 10),
("RIGHTPADDING", (0,0), (-1,-1), 10),
("TOPPADDING", (0,0), (-1,-1), 8),
("BOTTOMPADDING", (0,0), (-1,-1), 8),
("ROUNDEDCORNERS", [6]),
]))
story.append(KeepTogether([t, Spacer(1, 5)]))
# Footer
story.append(Spacer(1, 12))
story.append(HRFlowable(width="100%", thickness=1, color=colors.HexColor("#e2ddf5"), spaceAfter=6))
story.append(Paragraph(f"Generated by LearnCraft · {date.today()}", s["label"]))
doc.build(story)
return buffer.getvalue()
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