#!/bin/bash

# Build the Vietnamese translation as a single PDF.

# Requirements: pandoc, xelatex, ElegantBook class, rsvg-convert/librsvg,

# and fonts that support Vietnamese + CJK fallback.

# Usage: cd book-vi && bash build_pdf.sh

set -e

set -o pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

cd "$SCRIPT_DIR"

# Homebrew and MacTeX often are not visible inside non-login shells.

export PATH="/opt/homebrew/bin:/usr/local/bin:/Library/TeX/texbin:$PATH"

for cmd in pandoc xelatex rsvg-convert python3; do

if ! command -v "$cmd" >/dev/null 2>&1; then

echo "Error: $cmd not found in PATH." >&2

if [ "$cmd" = "xelatex" ]; then

echo "If MacTeX is installed, run: export PATH=\"/Library/TeX/texbin:\\$PATH\"" >&2

echo "Then check: /Library/TeX/texbin/xelatex --version" >&2

elif [ "$cmd" = "rsvg-convert" ]; then

echo "Install it with: brew install librsvg" >&2

elif [ "$cmd" = "pandoc" ]; then

echo "Install it with: brew install pandoc" >&2

fi

exit 1

fi

done

OUT="AI-Agents-in-Depth-Bojie-Li-v1.3-vi.pdf"

CHAPTERS=(

introduction.vi.md

glossary.vi.md

chapter1.vi.md

chapter2.vi.md

chapter3.vi.md

chapter4.vi.md

chapter5.vi.md

chapter6.vi.md

chapter7.vi.md

chapter8.vi.md

chapter9.vi.md

chapter10.vi.md

afterword.vi.md

)

for ch in "${CHAPTERS[@]}"; do

if [ ! -f "$ch" ]; then

echo "Error: $ch not found. Run the translation step first." >&2

exit 1

fi

done

echo "Checking Vietnamese SVG layout..."

python3 fix_svg_text_layout.py --check

echo "Building Vietnamese PDF from ${#CHAPTERS[@]} files..."

echo "Note: after the initial Pandoc warnings, XeLaTeX may be quiet for several minutes."

echo "Full build log: build_pdf_vi.log"

LOG="build_pdf_vi.log"

: > "$LOG"

pandoc "${CHAPTERS[@]}" \

-o "$OUT" \

--from markdown+lists_without_preceding_blankline \

--pdf-engine=xelatex \

--pdf-engine-opt=-interaction=nonstopmode \

--pdf-engine-opt=-halt-on-error \

--pdf-engine-opt=-file-line-error \

--lua-filter=crossref.lua \

--lua-filter=experiment_box.lua \

--toc \

--toc-depth=3 \

--number-sections \

-V documentclass=elegantbook \

-V classoption=lang=cn \

-V classoption=fontset=fandol \

-V classoption=cyan \

-V classoption=device=normal \

-V author="Lý Bác Kiệt" \

--metadata title-meta="Hiểu sâu về AI Agent: Nguyên lý thiết kế và thực hành kỹ thuật" \

--metadata author-meta="Lý Bác Kiệt" \

-H preamble.tex \

--include-before-body=cover.tex \

--highlight-style=kate \

--columns=80 \

> "$LOG" 2>&1 &

PANDOC_PID=$!

START_TIME=$(date +%s)

while kill -0 "$PANDOC_PID" >/dev/null 2>&1; do

sleep 30

if ! kill -0 "$PANDOC_PID" >/dev/null 2>&1; then

break

fi

NOW=$(date +%s)

ELAPSED=$((NOW - START_TIME))

echo "Still building... ${ELAPSED}s elapsed. Last log lines:"

tail -5 "$LOG" || true

echo "---"

done

if ! wait "$PANDOC_PID"; then

echo "PDF build failed. Last 80 log lines:" >&2

tail -80 "$LOG" >&2 || true

exit 1

fi

cat "$LOG"

if [ -f "$OUT" ]; then

SIZE=$(du -h "$OUT" | cut -f1)

PAGES=$(pdfinfo "$OUT" 2>/dev/null | awk '/^Pages:/ {print $2; exit}')

PAGES=${PAGES:-?}

echo ""

echo "Done: $OUT ($SIZE, $PAGES pages)"

else

echo "Error: PDF generation failed" >&2

exit 1

fi