#!/usr/bin/env bash
# Run a real Tank Royale battle with a classic-Robocode-shim bot (the "subject")
# against an adversary and dump the movement fixture + statistics.
#
#   tools/robocode_shim/run_bridge_battle.sh <adversaryBotDir> [rounds] [outJsonl]
#
# The subject is the DrussGT bridge bot dir by default (legacy behaviour). Point
# it at any other generated legacy bot directory with SHIM_BOTDIR:
#
#   SHIM_BOTDIR=/tmp/tr_bots/Diamond \
#     tools/robocode_shim/run_bridge_battle.sh <adversaryBotDir> 2 /tmp/diamond.jsonl
#
# Environment:
#   SHIM_BOTDIR    subject bot dir; if set it is used as-is (not regenerated)
#   DRUSSGT_BOTDIR legacy alias for the DrussGT subject dir (regenerated)
#   SHIM_BOT_NAME  subject name as reported in the battle (default: dir basename)
#   SHIM_DATA      classic data dir for the subject; unset => fresh dir per battle
#   TR_EVENTS_OUT  optional raw bullet-event sidecar
#
# Example:
#   tools/robocode_shim/run_bridge_battle.sh \
#       /home/davide/Projects/tank-royale/sample-bots/java/build/archive/SpinBot 5
set -euo pipefail

HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO="$(cd "$HERE/../.." && pwd)"
ADVERSARY="${1:?usage: run_bridge_battle.sh <adversaryBotDir> [rounds] [outJsonl]}"
ROUNDS="${2:-5}"
OUT_JSONL="${3:-/tmp/tr_shim_$(basename "$ADVERSARY" | tr 'A-Z' 'a-z').jsonl}"

RUNNER="${TR_RUNNER_JAR:-/home/davide/Projects/tank-royale/runner/examples/lib/robocode-tankroyale-runner.jar}"

if [[ -n "${SHIM_BOTDIR:-}" ]]; then
  SUBJECT_BOTDIR="$SHIM_BOTDIR"
  [[ -d "$SUBJECT_BOTDIR" ]] || { echo "subject bot dir not found: $SUBJECT_BOTDIR" >&2; exit 1; }
else
  # Legacy DrussGT path: regenerate the shared/overridden DrussGT bot dir.
  SUBJECT_BOTDIR="${DRUSSGT_BOTDIR:-/tmp/tr_bots/DrussGT}"
  export DRUSSGT_JAR="${DRUSSGT_JAR:-/tmp/drussgt/DrussGT.jar}"
  export DRUSSGT_DATA="${DRUSSGT_DATA:-/tmp/drussgt_bridge_data}"
  "$HERE/make_botdir.sh" "$SUBJECT_BOTDIR" >/dev/null
fi

SUBJECT_NAME="${SHIM_BOT_NAME:-$(basename "$SUBJECT_BOTDIR")}"

EVENTS_ARGS=()
if [[ -n "${TR_EVENTS_OUT:-}" ]]; then
  EVENTS_ARGS=(--events-out "$TR_EVENTS_OUT")
fi

java -cp "$HERE/out:$RUNNER" robocode_shim.TrBattleCapture \
  --rounds "$ROUNDS" --out "$OUT_JSONL" \
  --bot "$SUBJECT_BOTDIR" --bot "$ADVERSARY" \
  --subject "$SUBJECT_NAME" --adversary "$(basename "$ADVERSARY")" \
  "${EVENTS_ARGS[@]}"

echo
echo "=== movement statistics (TR, subject=$SUBJECT_NAME) ==="
python3 "$REPO/tools/robocode_fixture_capture/analyze.py" "$OUT_JSONL"