#!/usr/bin/env bash
# SPDX-License-Identifier: AGPL-3.0-or-later
# QA-CORPUS-401-031: Deterministic runner for reachability corpus tests
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "${SCRIPT_DIR}/../.." && pwd)"
TEST_PROJECT="${REPO_ROOT}/tests/reachability/StellaOps.Reachability.FixtureTests/StellaOps.Reachability.FixtureTests.csproj"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

log_info() { echo -e "${GREEN}[INFO]${NC} $*"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $*"; }
log_error() { echo -e "${RED}[ERROR]${NC} $*"; }

# Parse arguments
FILTER=""
VERBOSITY="normal"
CONFIGURATION="Release"
NO_BUILD=false

while [[ $# -gt 0 ]]; do
    case $1 in
        --filter)
            FILTER="$2"
            shift 2
            ;;
        --verbosity|-v)
            VERBOSITY="$2"
            shift 2
            ;;
        --configuration|-c)
            CONFIGURATION="$2"
            shift 2
            ;;
        --no-build)
            NO_BUILD=true
            shift
            ;;
        --help|-h)
            echo "Usage: $0 [options]"
            echo ""
            echo "Options:"
            echo "  --filter <pattern>      xUnit filter pattern (e.g., 'CorpusFixtureTests')"
            echo "  --verbosity, -v <level> Test verbosity (quiet, minimal, normal, detailed, diagnostic)"
            echo "  --configuration, -c     Build configuration (Debug, Release)"
            echo "  --no-build              Skip build step"
            echo "  --help, -h              Show this help"
            echo ""
            echo "Examples:"
            echo "  $0                                    # Run all fixture tests"
            echo "  $0 --filter CorpusFixtureTests        # Run only corpus tests"
            echo "  $0 --filter ReachbenchFixtureTests    # Run only reachbench tests"
            exit 0
            ;;
        *)
            log_error "Unknown option: $1"
            exit 1
            ;;
    esac
done

cd "${REPO_ROOT}"

log_info "Reachability Corpus Test Runner"
log_info "Repository root: ${REPO_ROOT}"
log_info "Test project: ${TEST_PROJECT}"

# Verify prerequisites
if ! command -v dotnet &> /dev/null; then
    log_error "dotnet CLI not found. Please install .NET SDK."
    exit 1
fi

# Verify corpus exists
if [[ ! -f "${REPO_ROOT}/tests/reachability/corpus/manifest.json" ]]; then
    log_error "Corpus manifest not found at tests/reachability/corpus/manifest.json"
    exit 1
fi

if [[ ! -f "${REPO_ROOT}/tests/reachability/fixtures/reachbench-2025-expanded/INDEX.json" ]]; then
    log_error "Reachbench INDEX not found at tests/reachability/fixtures/reachbench-2025-expanded/INDEX.json"
    exit 1
fi

# Build if needed
if [[ "${NO_BUILD}" == false ]]; then
    log_info "Building test project (${CONFIGURATION})..."
    dotnet build "${TEST_PROJECT}" -c "${CONFIGURATION}" --nologo
fi

# Build test command
TEST_CMD="dotnet test ${TEST_PROJECT} -c ${CONFIGURATION} --no-build --verbosity ${VERBOSITY}"

if [[ -n "${FILTER}" ]]; then
    TEST_CMD="${TEST_CMD} --filter \"FullyQualifiedName~${FILTER}\""
    log_info "Running tests with filter: ${FILTER}"
else
    log_info "Running all fixture tests..."
fi

# Run tests
log_info "Executing: ${TEST_CMD}"
eval "${TEST_CMD}"

EXIT_CODE=$?

if [[ ${EXIT_CODE} -eq 0 ]]; then
    log_info "All tests passed!"
else
    log_error "Some tests failed (exit code: ${EXIT_CODE})"
fi

exit ${EXIT_CODE}