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

# Two-player extension of verify_control_plane_integration.sh: a real
# PostgreSQL instance, the real api.Service (via testkit-api, see that
# script's header for why), a real server/cmd/matcher (the actual production
# binary -- it needs no fake, it only ever touches queue_tickets/proposals),
# and two real headless Godot clients each playing one player through
# login -> queue_create -> (real matcher pairs them) -> proposal accept.
# multiplayer-next.md 8.40 names this as the next scoped extension to the
# single-player harness.

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

godot_bin="${GODOT_BIN:-}"
godot_image="barichello/godot-ci@sha256:622e5ca81b54cd8038ecf7de5d157b47efc800d7cf635af2eec18a6aee4bab7e"
container_name="cosmic-clash-control-plane-proposal-integration"
database="cosmic_clash_test"
user="cosmic_clash_test"
password="cosmic_clash_test"
pg_port="55435"
api_port="18100"
logs_dir="$(mktemp -d "${TMPDIR:-/tmp}/cosmic-clash-control-plane-proposal.XXXXXX")"

testkit_pid=""
matcher_pid=""
if [[ -z "$godot_bin" ]]; then
  if command -v godot >/dev/null 2>&1; then
    godot_bin="$(command -v godot)"
  elif [[ -x /Applications/Godot.app/Contents/MacOS/Godot ]]; then
    godot_bin="/Applications/Godot.app/Contents/MacOS/Godot"
  fi
fi
use_container_godot=0
if [[ -z "$godot_bin" || ! -x "$godot_bin" ]]; then
  use_container_godot=1
fi

run_godot() {
  if [[ "$use_container_godot" == 0 ]]; then
    "$godot_bin" --headless --path Game res://tests/control_plane_proposal_smoke.tscn -- "$@"
    return
  fi
  docker run --rm --platform linux/amd64 \
    --mount "type=bind,src=$root_dir,dst=/workspace" -w /workspace "$godot_image" \
    godot --headless --path Game res://tests/control_plane_proposal_smoke.tscn -- "$@"
}
cleanup() {
  local status=$?
  if (( status != 0 )); then
    for log_file in "$logs_dir"/*.log; do
      [[ -f "$log_file" ]] || continue
      echo "--- $log_file" >&2
      cat "$log_file" >&2
    done
  fi
  [[ -n "$testkit_pid" ]] && kill "$testkit_pid" 2>/dev/null || true
  [[ -n "$matcher_pid" ]] && kill "$matcher_pid" 2>/dev/null || true
  lsof -ti "tcp:${api_port}" 2>/dev/null | xargs -r kill -9 2>/dev/null || true
  docker rm -f "$container_name" >/dev/null 2>&1 || true
  echo "Control-plane proposal integration logs: $logs_dir"
}
trap cleanup EXIT

docker rm -f "$container_name" >/dev/null 2>&1 || true
docker run --rm -d --name "$container_name" \
  -e POSTGRES_DB="$database" \
  -e POSTGRES_USER="$user" \
  -e POSTGRES_PASSWORD="$password" \
  -p "${pg_port}:5432" postgres:17-alpine >/dev/null

for attempt in $(seq 1 30); do
  if docker exec "$container_name" pg_isready -U "$user" -d "$database" >/dev/null 2>&1; then
    break
  fi
  if [ "$attempt" = 30 ]; then
    echo "PostgreSQL did not become ready" >&2
    exit 1
  fi
  sleep 1
done

dsn="postgres://${user}:${password}@127.0.0.1:${pg_port}/${database}?sslmode=disable"

go -C server build -o "$logs_dir/testkit-api" ./cmd/testkit-api
go -C server build -o "$logs_dir/matcher" ./cmd/matcher

COSMIC_CLASH_POSTGRES_DSN="$dsn" "$logs_dir/testkit-api" --listen="127.0.0.1:${api_port}" --migrations="$root_dir/server/migrations" \
  >"$logs_dir/testkit-api.log" 2>&1 &
testkit_pid=$!

for attempt in $(seq 1 30); do
  if curl -sSf "http://127.0.0.1:${api_port}/healthz" >/dev/null 2>&1; then
    break
  fi
  if [ "$attempt" = 30 ]; then
    echo "testkit-api did not become ready" >&2
    exit 1
  fi
  sleep 1
done

# --interval=250ms: this is the whole test's own latency budget, not a
# production setting -- fast polling here just keeps the smoke test quick.
COSMIC_CLASH_POSTGRES_DSN="$dsn" "$logs_dir/matcher" --playlist=casual --size=2 --interval=250ms --migrations="$root_dir/server/migrations" \
  >"$logs_dir/matcher.log" 2>&1 &
matcher_pid=$!

client_api_host="127.0.0.1"
if [[ "$use_container_godot" == 1 ]]; then
  client_api_host="host.docker.internal"
fi
run_godot --control-plane-url="http://${client_api_host}:${api_port}" --role=player-a \
  >"$logs_dir/godot-player-a.log" 2>&1 &
player_a_pid=$!
run_godot --control-plane-url="http://${client_api_host}:${api_port}" --role=player-b \
  >"$logs_dir/godot-player-b.log" 2>&1 &
player_b_pid=$!

# The matcher only forms a match from candidates that share a verified
# region (server/domain/matcher.go's commonRegions, over each candidate's
# queue_tickets.predicted_rtt) -- populated for real only via the
# authenticated Steam-relay probe flow (task 8.15/8.16), which this harness
# has no real Steam access to drive. Seed it directly in the same database
# instead of building another fake auth boundary just for this: both real
# clients still go through the real queue/matcher/proposal path end to end,
# only the region-probe INPUT is synthetic, exactly like testkit-api's fake
# Steam login already is for identity. Bounded to the same overall timeout
# the Godot clients themselves use.
seed_deadline=$(( $(date +%s) + 20 ))
while [ "$(date +%s)" -lt "$seed_deadline" ]; do
  if ! kill -0 "$player_a_pid" 2>/dev/null && ! kill -0 "$player_b_pid" 2>/dev/null; then
    break
  fi
  docker exec "$container_name" psql -U "$user" -d "$database" -c \
    "UPDATE queue_tickets SET predicted_rtt = '{\"EU\": 20}'::jsonb WHERE state = 'QUEUED' AND client_build = 'smoke-build'" \
    >/dev/null 2>&1 || true
  sleep 0.2
done

status_a=0
status_b=0
wait "$player_a_pid" || status_a=$?
wait "$player_b_pid" || status_b=$?

if [ "$status_a" -ne 0 ] || [ "$status_b" -ne 0 ] \
   || ! grep -q "^SMOKE PASS:" "$logs_dir/godot-player-a.log" \
   || ! grep -q "^SMOKE PASS:" "$logs_dir/godot-player-b.log"; then
  echo "Control-plane proposal integration FAILED (player-a=$status_a player-b=$status_b)" >&2
  docker exec "$container_name" psql -U "$user" -d "$database" -c \
    "SELECT state, client_build, predicted_rtt, count(*) FROM queue_tickets GROUP BY state, client_build, predicted_rtt ORDER BY state" >&2 || true
  docker exec "$container_name" psql -U "$user" -d "$database" -c \
    "SELECT proposal_id, state, revision, count(*) AS participants FROM proposals LEFT JOIN proposal_participants USING (proposal_id) GROUP BY proposal_id, state, revision" >&2 || true
  cat "$logs_dir/godot-player-a.log" >&2
  cat "$logs_dir/godot-player-b.log" >&2
  exit 1
fi

echo "Control-plane proposal integration PASS"