#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="$(cd -- "$SCRIPT_DIR/.." && pwd)"
TOOL_DIR="$SCRIPT_DIR/sdlc-delivery"
SOURCE_DIR="$ROOT_DIR/sdlc"
DELIVERY_ROOT="$ROOT_DIR/sdlc-delivery"
STAGING_DIR="$ROOT_DIR/.sdlc-delivery.staging"

if [[ ! -d "$TOOL_DIR/node_modules/playwright" ]]; then
  echo "Installing the local PDF renderer..."
  npm install --prefix "$TOOL_DIR"
  npx --prefix "$TOOL_DIR" playwright install chromium
fi

# The Software Design figures are drawn in scripts/sdlc-seed/figures.mjs and
# rasterised with the document font before the seed copies them into sdlc/.
echo "Rendering Software Design figures..."
node "$TOOL_DIR/render-figures.mjs"

# sdlc/ is generated output: the seed rebuilds every work product from the
# controlled project data in scripts/sdlc-seed/ before anything is rendered.
echo "Seeding work products from project data..."
node "$SCRIPT_DIR/sdlc-seed/build.mjs"

rm -rf "$STAGING_DIR"
mkdir -p "$STAGING_DIR"

while IFS= read -r -d '' source; do
  relative="${source#"$ROOT_DIR/sdlc/"}"
  destination="$STAGING_DIR/${relative%.md}.pdf"
  echo "Rendering ${relative%.md}.pdf"
  node "$TOOL_DIR/render-sdlc.mjs" "$source" "$destination"
done < <(find "$SOURCE_DIR" -type f -name '*.md' -print0 | sort -z)

# Every .pdf gets a Word copy beside it, reconstructed from the rendered page.
# The CI header bands need Playwright, so they are rendered here with node and
# handed to the converter, which then only needs Python with pdf2docx: the local
# interpreter ($PYTHON) when it has it, otherwise a throwaway python container.
BAND_DIR="$(mktemp -d)"
trap 'rm -rf "$BAND_DIR"' EXIT
echo "Rendering CI header bands..."
node "$TOOL_DIR/render-ci-band.mjs" "$SOURCE_DIR" "$BAND_DIR"

echo "Converting PDFs to Word..."
PYTHON="${PYTHON:-python3}"
if "$PYTHON" -c 'import pdf2docx, docx' 2>/dev/null; then
  "$PYTHON" "$TOOL_DIR/convert-to-docx.py" "$SOURCE_DIR" "$STAGING_DIR" "$BAND_DIR"
elif command -v docker >/dev/null 2>&1; then
  PY_CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/sdlc-delivery-python"
  mkdir -p "$PY_CACHE"
  docker run --rm --user "$(id -u):$(id -g)" -e HOME=/tmp -e PYTHONPATH=/py \
    -v "$ROOT_DIR:$ROOT_DIR" -v "$BAND_DIR:$BAND_DIR:ro" -v "$PY_CACHE:/py" \
    -w "$ROOT_DIR" python:3.12-slim sh -c '
      python -c "import pdf2docx, docx" 2>/dev/null ||
        pip install --quiet --disable-pip-version-check --target /py -r "$1"
      shift; python "$@"' _ \
    "$TOOL_DIR/requirements.txt" "$TOOL_DIR/convert-to-docx.py" "$SOURCE_DIR" "$STAGING_DIR" "$BAND_DIR"
else
  echo "pdf2docx is not available: pip install -r $TOOL_DIR/requirements.txt, or install docker." >&2
  exit 1
fi

echo "Verifying staged delivery package..."
"$SCRIPT_DIR/verify-sdlc-delivery.sh" "$STAGING_DIR"

rm -rf "$DELIVERY_ROOT"
mv "$STAGING_DIR" "$DELIVERY_ROOT"
echo "Delivery and verification passed: $DELIVERY_ROOT"