#!/usr/bin/env bash
# Build a distributable .zip of the DIDI browser extension.
# Output: ../web/public/downloads/didi-extension-v<VERSION>.zip
#         ../web/public/downloads/didi-extension-latest.zip (copy)
#
# Usage: ./build.sh
#
# Excluded from the zip: docs (*.md), build artifacts (*.zip), icon generators,
# the legacy extractors/ folder (dead code — extraction logic lives in content.js).

set -euo pipefail

SRC_DIR="$(cd "$(dirname "$0")" && pwd)"
OUT_DIR="$(cd "$SRC_DIR/../web/public/downloads" && pwd)"

VERSION=$(grep '"version"' "$SRC_DIR/manifest.json" | head -1 | sed -E 's/.*"version"[[:space:]]*:[[:space:]]*"([^"]+)".*/\1/')
if [ -z "$VERSION" ]; then
  echo "ERROR: cannot read version from manifest.json" >&2
  exit 1
fi

ZIP_NAME="didi-extension-v${VERSION}.zip"
LATEST_NAME="didi-extension-latest.zip"

echo "[ext-build] Version: $VERSION"
echo "[ext-build] Source:  $SRC_DIR"
echo "[ext-build] Output:  $OUT_DIR/$ZIP_NAME"

cd "$SRC_DIR"
rm -f "$OUT_DIR/$ZIP_NAME" "$OUT_DIR/$LATEST_NAME"

# Build the zip excluding docs, build artifacts, and dead code.
# Try native zip first, fall back to docker (alpine has zip).
if command -v zip >/dev/null 2>&1; then
  zip -r "$OUT_DIR/$ZIP_NAME" . \
    -x "*.md" \
    -x "*.zip" \
    -x "build.sh" \
    -x "generate_icons.*" \
    -x "extractors/*" \
    -x ".git/*"
else
  docker run --rm -v "$SRC_DIR":/src -v "$OUT_DIR":/out -w /src alpine:latest \
    sh -c "apk add --no-cache zip >/dev/null && zip -r /out/$ZIP_NAME . \
      -x '*.md' -x '*.zip' -x 'build.sh' -x 'generate_icons.*' -x 'extractors/*' -x '.git/*'"
fi

cp "$OUT_DIR/$ZIP_NAME" "$OUT_DIR/$LATEST_NAME"

echo "[ext-build] Done."
echo "[ext-build] $OUT_DIR/$ZIP_NAME ($(du -h "$OUT_DIR/$ZIP_NAME" | cut -f1))"
echo "[ext-build] $OUT_DIR/$LATEST_NAME"