build.sh

#!/usr/bin/env bash
# jobmeta — per-browser build script.
#
# Concatenates src/shared/*.js (in load order) + src/background/service-worker.js
# into dist/<browser>/background/service-worker.js so the SW sees JM_CONFIG /
# JM_API / JM_getInstallId on the global scope without ES imports (Firefox
# MV3's `background.scripts` doesn't support importScripts; modules are
# half-supported across the matrix; concat is the lowest-friction path).
#
# Everything else is copied verbatim. Each browser's manifest comes from
# manifests/<browser>.json so reviewers can audit the per-browser permission
# set without diffing a generated file.
#
# Usage: ./build.sh                  # build all 3 browsers
#        ./build.sh chrome           # build chrome only
#        ./build.sh chrome firefox   # build chrome and firefox
#        ./build.sh --zip            # build all + produce zips

set -euo pipefail

ROOT="$(cd "$(dirname "$0")" && pwd)"
SRC="$ROOT/src"
DIST="$ROOT/dist"

BROWSERS=()
ZIP=0
for arg in "$@"; do
  case "$arg" in
    --zip) ZIP=1 ;;
    chrome|firefox|edge) BROWSERS+=("$arg") ;;
    *) echo "unknown arg: $arg" >&2; exit 2 ;;
  esac
done
if [ "${#BROWSERS[@]}" -eq 0 ]; then
  BROWSERS=(chrome firefox edge)
fi

# Shared files concatenated into the SW, in load order.
SHARED_FOR_SW=(
  "$SRC/shared/constants.js"
  "$SRC/shared/browser.js"
  "$SRC/shared/install_id.js"
)

build_one() {
  local browser="$1"
  local out="$DIST/$browser"
  echo "→ building $browser"
  rm -rf "$out"
  mkdir -p "$out"
  # Copy verbatim trees.
  for d in popup content pages icons shared; do
    if [ -d "$SRC/$d" ]; then
      cp -r "$SRC/$d" "$out/"
    fi
  done
  # Service worker = shared concat + sw.
  mkdir -p "$out/background"
  {
    echo "// jobmeta service worker — built $(date -u +%Y-%m-%dT%H:%M:%SZ)"
    echo "// generated by build.sh — do not edit dist/ directly"
    echo ""
    for f in "${SHARED_FOR_SW[@]}"; do
      echo "// === $(basename "$f") ==="
      cat "$f"
      echo ""
    done
    echo "// === service-worker.js ==="
    cat "$SRC/background/service-worker.js"
  } > "$out/background/service-worker.js"
  # Manifest.
  cp "$ROOT/manifests/$browser.json" "$out/manifest.json"
  # Validate JSON.
  python3 -c "import json,sys; json.load(open('$out/manifest.json'))" \
    || { echo "manifest.json invalid in $out" >&2; exit 3; }
  echo "  ✓ $out"
}

for b in "${BROWSERS[@]}"; do
  build_one "$b"
done

if [ "$ZIP" = "1" ]; then
  echo ""
  for b in "${BROWSERS[@]}"; do
    local_dir="$DIST/$b"
    zip_path="$DIST/jobmeta-${b}-v2.0.0.zip"
    rm -f "$zip_path"
    (cd "$local_dir" && zip -qr "$zip_path" .)
    sz=$(stat -c '%s' "$zip_path" 2>/dev/null || stat -f '%z' "$zip_path")
    echo "  📦 $zip_path ($sz bytes)"
  done
fi

echo "done."