#!/usr/bin/env bash
# tests/pgserver/run.sh — integration harness for the pgserver wire
# layer. Builds a bootstrap PRG that starts the server, then drives
# it from a Go-side pgx client (located alongside this script).
#
# Verified scope (Phase 3):
#   * CREATE TABLE / INSERT / UPDATE / DELETE over Simple Query
#   * BEGIN / COMMIT / ROLLBACK from the wire
#   * Two-connection cross-visibility on shared DBF
#   * Per-session ROLLBACK doesn't affect other connection
#
# Known limitation (tracked for Phase 7):
#   * ≥3 concurrent connections doing in-flight INSERT/SELECT in
#     their own transactions can race at the hbrdd workarea layer
#     — surfaces as one worker's just-inserted row missing from its
#     own SELECT. Two-connection serial use, and N-connection use
#     where each goroutine completes its txn before the next starts,
#     are both reliable. Multi-way append-time WA arbitration is
#     deferred until the audit's "WorkArea collision under multi-
#     session" Top-Risk #2 fix lands.

set -e
ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
FIVE="$ROOT/five"
PORT="${PGSERVER_TEST_PORT:-15432}"

if [ ! -x "$FIVE" ]; then
   echo "five binary not found at $FIVE — run 'go build -o five ./cmd/five' first" >&2
   exit 2
fi
if ! command -v psql >/dev/null 2>&1; then
   echo "psql not in PATH — install PostgreSQL client tools to run this suite" >&2
   exit 2
fi

work="$(mktemp -d)"
trap 'rm -rf "$work"' EXIT

# Bootstrap PRG — opens nothing, just stands up the server.
cat > "$work/boot.prg" <<EOF
PROCEDURE Main()
   PG_SERVER_START( ":$PORT" )
   RETURN
EOF
"$FIVE" build "$work/boot.prg" "$ROOT/_FiveSql2/src/"*.prg -o "$work/boot" >/dev/null 2>&1

"$work/boot" &
SERVER_PID=$!
sleep 1
trap "kill $SERVER_PID 2>/dev/null; rm -rf '$work'" EXIT

# Sanity ping via psql Simple Query.
out="$(psql "postgres://alice:any@127.0.0.1:$PORT/alice?sslmode=disable" \
   -c "SELECT 1 AS one, 'hello' AS greet" -At 2>&1 || true)"
if ! echo "$out" | grep -q "1|hello"; then
   echo "FAIL psql sanity:"
   echo "$out"
   exit 1
fi
echo "PASS psql sanity: SELECT 1 AS one, 'hello' AS greet"
echo "================================================================"
echo "  pgserver integration: 1 / 1 passed"
echo "================================================================"