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

echo "=== Phase 6: Integration Testing ==="
echo ""

PLUGIN_PATH="$(pwd)/build/nix-ir-plugin.so"
TEST_DIR="$(pwd)/tests/integration"

if [ ! -f "$PLUGIN_PATH" ]; then
	echo "ERROR: Plugin not found at $PLUGIN_PATH"
	exit 1
fi

echo "Plugin path: $PLUGIN_PATH"
echo ""

echo "Test 1: Plugin Loading"
echo "----------------------"
if nix-instantiate --plugin-files "$PLUGIN_PATH" --eval "$TEST_DIR/simple_eval.nix" 2>&1 | grep -q "30"; then
	echo "[PASS] Plugin loads and evaluates correctly"
else
	echo "[FAIL] Plugin failed to load or evaluate"
	exit 1
fi
echo ""

echo "Test 2: Normal Nix Evaluation (No Plugin)"
echo "------------------------------------------"
result=$(nix-instantiate --eval --strict --json "$TEST_DIR/regression_normal_nix.nix" 2>&1)
if echo "$result" | grep -q '"math":7'; then
	echo "[PASS] Normal Nix evaluation works without plugin"
else
	echo "[FAIL] Normal Nix evaluation broken"
	echo "$result"
	exit 1
fi
echo ""

echo "Test 3: Normal Nix Evaluation (With Plugin)"
echo "--------------------------------------------"
result=$(nix-instantiate --plugin-files "$PLUGIN_PATH" --eval --strict --json "$TEST_DIR/regression_normal_nix.nix" 2>&1)
if echo "$result" | grep -q '"math":7'; then
	echo "[PASS] Normal Nix evaluation works with plugin loaded"
else
	echo "[FAIL] Plugin breaks normal Nix evaluation"
	echo "$result"
	exit 1
fi
echo ""

echo "Test 4: Import Builtin"
echo "----------------------"
cd "$TEST_DIR"
result=$(nix-instantiate --plugin-files "$PLUGIN_PATH" --eval --strict --json import_test.nix 2>&1)
if echo "$result" | grep -q '"value":142'; then
	echo "[PASS] Import builtin works correctly"
else
	echo "[FAIL] Import builtin broken"
	echo "$result"
	exit 1
fi
cd - >/dev/null
echo ""

echo "Test 5: IR Builtins Available"
echo "------------------------------"
result=$(nix-instantiate --plugin-files "$PLUGIN_PATH" --eval "$TEST_DIR/ir_builtins_test.nix" 2>&1)
if echo "$result" | grep -q "info.*="; then
	echo "[PASS] IR builtins (nixIR_info, nixIR_compile, nixIR_loadIR) available"
else
	echo "[WARN] IR builtins may not be available (check plugin initialization)"
fi
echo ""

echo "Integration Tests Complete"