#!/usr/bin/env bash
# Verify that crashpad_handler is active when zenserver (release build) starts.
#
# This test:
#   1. Launches zenserver from the release build.
#   2. Waits for the HTTP health endpoint to become ready.
#   3. Checks that a crashpad_handler child process is running.
#   4. Checks that the startup log contains "sentry initialized" (not a failure).
#
# Usage:
#   ./scripts/test_linux/crashpad-test.sh [path-to-zenserver]
#
# If no path is given, defaults to build/linux/x86_64/release/zenserver
# relative to the repository root.
#
# The test exits 0 on success, 1 on failure.

set -euo pipefail

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

ZENSERVER_BINARY="${1:-$REPO_ROOT/build/linux/x86_64/release/zenserver}"
CRASHPAD_HANDLER="$(dirname "$ZENSERVER_BINARY")/crashpad_handler"
PORT=18558   # Use a non-default port so we don't collide with a running zenserver
DATA_DIR="$(mktemp -d)"
STDOUT_FILE="$DATA_DIR/stdout.log"
ZENSERVER_PID=""

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

PASSED=0
FAILED=0

pass() {
    echo -e "  ${GREEN}PASS${NC}  $1"
    (( PASSED++ )) || true
}

fail() {
    echo -e "  ${RED}FAIL${NC}  $1"
    (( FAILED++ )) || true
}

cleanup() {
    set +e
    if [ -n "$ZENSERVER_PID" ] && kill -0 "$ZENSERVER_PID" 2>/dev/null; then
        kill "$ZENSERVER_PID" 2>/dev/null
        wait "$ZENSERVER_PID" 2>/dev/null
    fi
    rm -rf "$DATA_DIR"
}
trap cleanup EXIT

# ── Preflight ────────────────────────────────────────────────────────────────

echo ""
echo "=============================="
echo "  Crashpad active check"
echo "=============================="
echo ""

if [ ! -f "$ZENSERVER_BINARY" ]; then
    echo -e "${RED}ERROR: zenserver binary not found: $ZENSERVER_BINARY${NC}"
    echo "       Build with: xmake config -m release && xmake build zenserver"
    exit 1
fi

if [ ! -f "$CRASHPAD_HANDLER" ]; then
    echo -e "${RED}ERROR: crashpad_handler not found alongside zenserver: $CRASHPAD_HANDLER${NC}"
    echo "       It should be copied there automatically by the build."
    exit 1
fi

echo "zenserver:        $ZENSERVER_BINARY"
echo "crashpad_handler: $CRASHPAD_HANDLER"
echo "port:             $PORT"
echo "data dir:         $DATA_DIR"
echo ""

# ── Start zenserver ──────────────────────────────────────────────────────────

# zenserver runs in the foreground until SIGINT/SIGTERM. Launch in background
# so we can poll its health endpoint and inspect child processes.
"$ZENSERVER_BINARY" \
    --port="$PORT" \
    --data-dir="$DATA_DIR" \
    > "$STDOUT_FILE" 2>&1 &
ZENSERVER_PID=$!

echo "Started zenserver (pid $ZENSERVER_PID), waiting for health endpoint..."

# ── Wait for health endpoint ─────────────────────────────────────────────────

READY=false
for i in $(seq 1 40); do
    if curl -sf "http://localhost:$PORT/health" > /dev/null 2>&1; then
        READY=true
        break
    fi
    sleep 0.5
done

if [ "$READY" = false ]; then
    echo -e "${RED}ERROR: zenserver did not become ready within 20 seconds${NC}"
    if [ -f "$STDOUT_FILE" ]; then
        echo ""
        echo "--- stdout ---"
        cat "$STDOUT_FILE"
    fi
    exit 1
fi

echo "Server is ready."

# Give the server a moment to finish startup logging (sentry init log
# message is emitted after the health endpoint comes up).
sleep 1
echo ""

# ── Test 1: crashpad_handler process is running for our data dir ─────────────
#
# sentry-native starts crashpad_handler with --database pointing at
# $DATA_DIR/.sentry-native. The process re-parents itself out of zenserver's
# process tree, so we look for it by its command-line arguments rather than
# by parent PID.

HANDLER_PID="$(pgrep -f "crashpad_handler.*${DATA_DIR}" 2>/dev/null | head -1 || true)"
if [ -n "$HANDLER_PID" ]; then
    pass "crashpad_handler is running (pid $HANDLER_PID) with database in our data dir"
else
    fail "crashpad_handler process not found — sentry_init may have failed or sentry is disabled"
fi

# ── Test 2: No sentry_init failure in startup log ────────────────────────────
#
# The "sentry initialized" success message is logged at INFO level under the
# sentry-sdk log category, which is filtered to Warn by default — so it won't
# appear in normal stdout. We check for the absence of the failure message
# instead (which IS at Warn level and would appear if sentry_init failed).

if grep -q "sentry_init returned failure" "$STDOUT_FILE" 2>/dev/null; then
    ERRMSG="$(grep "sentry_init returned failure" "$STDOUT_FILE" | head -1)"
    fail "sentry_init reported failure: $ERRMSG"
else
    pass "No sentry_init failure message in startup log"
fi

# ── Test 3: ldd sanity — crashpad_handler must not need libc++.so.1 ──────────

MISSING_LIBCXX="$(ldd "$CRASHPAD_HANDLER" 2>/dev/null | grep "libc++\.so\.1" | grep "not found" || true)"
if [ -n "$MISSING_LIBCXX" ]; then
    fail "crashpad_handler has an unsatisfied libc++.so.1 dependency (static linking patch not applied)"
elif ldd "$CRASHPAD_HANDLER" 2>/dev/null | grep -q "libc++\.so\.1"; then
    fail "crashpad_handler links libc++.so.1 dynamically — it should be statically linked"
else
    pass "crashpad_handler has no dynamic libc++.so.1 dependency"
fi

# ── Summary ──────────────────────────────────────────────────────────────────

echo ""
echo "=============================="
printf "  Passed: "
echo -e "${GREEN}${PASSED}${NC}"
printf "  Failed: "
if [ "$FAILED" -gt 0 ]; then
    echo -e "${RED}${FAILED}${NC}"
else
    echo -e "${GREEN}${FAILED}${NC}"
fi
echo "=============================="
echo ""

if [ "$FAILED" -gt 0 ]; then
    if [ -f "$STDOUT_FILE" ]; then
        echo "--- stdout ---"
        cat "$STDOUT_FILE"
    fi
    exit 1
fi