#!/usr/bin/env bash
# Take a fresh checkout to the point where you can play a match.
#
#   ./scripts/bootstrap.sh
#   ./spike-webswing/start.sh     # then open http://localhost:8080/megamek/
#
# Steps, all idempotent:
#   1. fetch third-party deps (JDK, MegaMek release + source, Webswing Lite)
#   2. compile the harness against the stock MegaMek jar
#   3. build MegaMek-patched.jar by applying patches/patchset/
#   4. generate the legacy fontconfig Webswing Lite's toolkit requires
#   5. prime MegaMek's units.cache so the first launch is not 17s slower
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

step() { printf '\n=== %s ===\n' "$1"; }

step "1/5  third-party dependencies"
./scripts/fetch-deps.sh

step "2/5  harness"
./harness/build.sh

step "3/5  patched MegaMek jar"
./patches/build-patched-jar.sh

step "4/5  fontconfig"
# Needs fontconfig tooling on the host; MegaMek's symbol glyphs depend on it.
if command -v fc-match >/dev/null; then
  ./scripts/gen-fontconfig.sh
else
  echo "SKIPPED: fc-match not found. Install fontconfig, then run" >&2
  echo "  ./scripts/gen-fontconfig.sh" >&2
  echo "Without it the MegaMek client dies at startup with 'Fontconfig head is null'." >&2
fi

step "5/5  prime units.cache"
# MegaMek builds this by walking ~11k unit files on first run - 20s instead of 3s.
# Doing it here keeps it out of the first match.
MM="$ROOT/MegaMek-0.51.00"
if [ -f "$MM/data/mekfiles/units.cache" ]; then
  echo "  already present"
else
  echo "  building (this takes ~20s) ..."
  ( cd "$MM" && "$ROOT/jdk-21.0.12+8/bin/java" \
      -Dlog4j2.configurationFile="$ROOT/harness/log4j2-quiet.xml" \
      --add-opens java.base/java.util=ALL-UNNAMED \
      --add-opens java.base/java.util.concurrent=ALL-UNNAMED \
      -cp "$ROOT/harness/out:$ROOT/MegaMek-patched.jar:$(ls "$MM"/lib/*.jar | tr '\n' ':')" \
      bench.IsolationCheck >/dev/null 2>&1 ) || true
  [ -f "$MM/data/mekfiles/units.cache" ] && echo "  built" || echo "  (not built; first launch will be slower)"
fi

cat <<'DONE'

=== ready ===

  ./spike-webswing/start.sh          then open http://localhost:8080/megamek/
  ./spike-webswing/stop.sh           stop it (never pkill - see README)

  You play TraineeA, Princess plays TraineeB. Press "Done" in the lobby.
DONE