Tamil font added

src/pdf_utils.py

@@ -1,31 +1,84 @@
+# src/pdf_utils.py
+
 from io import BytesIO
 from reportlab.lib.pagesizes import A4
-from reportlab.pdfgen import canvas
+from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer
+from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
+from reportlab.pdfbase import pdfmetrics
+from reportlab.pdfbase.ttfonts import TTFont
 from reportlab.lib.units import inch
+import os
+
+# ---------------- FONT REGISTRATION ----------------
+
+FONT_DIR = "fonts"
+
+REGULAR_FONT = os.path.join(FONT_DIR, "NotoSansTamil-Regular.ttf")
+BOLD_FONT = os.path.join(FONT_DIR, "NotoSansTamil-Bold.ttf")
+
+pdfmetrics.registerFont(TTFont("Tamil", REGULAR_FONT))
+pdfmetrics.registerFont(TTFont("Tamil-Bold", BOLD_FONT))
+
+# ---------------- PDF GENERATOR ----------------
 
 def answer_to_pdf(question: str, answer: str) -> BytesIO:
     buffer = BytesIO()
-    c = canvas.Canvas(buffer, pagesize=A4)
-    width, height = A4
-
-    textobject = c.beginText(1 * inch, height - 1 * inch)
-    textobject.setFont("Helvetica", 11)
-
-    textobject.textLine("OTT Bot – Answer")
-    textobject.textLine("-" * 50)
-    textobject.textLine("")
-    textobject.textLine(f"Question:")
-    textobject.textLine(question)
-    textobject.textLine("")
-    textobject.textLine("Answer:")
-    textobject.textLine("")
-
-    for line in answer.split("\n"):
-        textobject.textLine(line)
-
-    c.drawText(textobject)
-    c.showPage()
-    c.save()
+
+    doc = SimpleDocTemplate(
+        buffer,
+        pagesize=A4,
+        rightMargin=72,
+        leftMargin=72,
+        topMargin=72,
+        bottomMargin=72,
+    )
+
+    styles = getSampleStyleSheet()
+
+    styles.add(
+        ParagraphStyle(
+            name="TitleStyle",
+            fontName="Tamil-Bold",
+            fontSize=14,
+            spaceAfter=12,
+        )
+    )
+
+    styles.add(
+        ParagraphStyle(
+            name="HeadingStyle",
+            fontName="Tamil-Bold",
+            fontSize=11,
+            spaceAfter=6,
+        )
+    )
+
+    styles.add(
+        ParagraphStyle(
+            name="BodyStyle",
+            fontName="Tamil",
+            fontSize=11,
+            leading=14,
+            spaceAfter=6,
+        )
+    )
+
+    story = []
+
+    # ---------- Title ----------
+    story.append(Paragraph("OTT Bot – Answer", styles["TitleStyle"]))
+    story.append(Spacer(1, 12))
+
+    # ---------- Question ----------
+    story.append(Paragraph("Question:", styles["HeadingStyle"]))
+    story.append(Paragraph(question.replace("\n", "<br/>"), styles["BodyStyle"]))
+    story.append(Spacer(1, 12))
+
+    # ---------- Answer ----------
+    story.append(Paragraph("Answer:", styles["HeadingStyle"]))
+    story.append(Paragraph(answer.replace("\n", "<br/>"), styles["BodyStyle"]))
+
+    doc.build(story)
 
     buffer.seek(0)
     return buffer