#!/bin/bash

# MangaReader Backend Integration Test Runner
# This script helps you run the integration tests easily

set -e

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Configuration
BACKEND_DIR="/home/ren/ios/MangaReader/backend"
SERVER_PID_FILE="$BACKEND_DIR/.server.pid"
LOG_DIR="$BACKEND_DIR/logs"

# Functions
log_info() {
    echo -e "${BLUE}ℹ ${1}${NC}"
}

log_success() {
    echo -e "${GREEN}✓ ${1}${NC}"
}

log_error() {
    echo -e "${RED}✗ ${1}${NC}"
}

log_warning() {
    echo -e "${YELLOW}⚠ ${1}${NC}"
}

print_header() {
    echo ""
    echo "============================================================"
    echo "  $1"
    echo "============================================================"
    echo ""
}

# Create logs directory if it doesn't exist
mkdir -p "$LOG_DIR"

# Check if server is running
is_server_running() {
    if [ -f "$SERVER_PID_FILE" ]; then
        PID=$(cat "$SERVER_PID_FILE")
        if ps -p $PID > /dev/null 2>&1; then
            return 0
        else
            rm -f "$SERVER_PID_FILE"
            return 1
        fi
    fi
    return 1
}

# Start server
start_server() {
    print_header "Starting Server"

    if is_server_running; then
        log_warning "Server is already running (PID: $(cat $SERVER_PID_FILE))"
        return 0
    fi

    log_info "Starting server in background..."
    cd "$BACKEND_DIR"

    # Start server and capture PID
    nohup node server.js > "$LOG_DIR/server.log" 2>&1 &
    SERVER_PID=$!
    echo $SERVER_PID > "$SERVER_PID_FILE"

    # Wait for server to start
    log_info "Waiting for server to start..."
    sleep 3

    # Check if server started successfully
    if is_server_running; then
        log_success "Server started successfully (PID: $SERVER_PID)"
        log_info "Logs: $LOG_DIR/server.log"

        # Verify server is responding
        if curl -s http://localhost:3000/api/health > /dev/null; then
            log_success "Server is responding to requests"
        else
            log_warning "Server started but not responding yet (may need more time)"
        fi
    else
        log_error "Failed to start server"
        log_info "Check logs: $LOG_DIR/server.log"
        exit 1
    fi
}

# Stop server
stop_server() {
    print_header "Stopping Server"

    if ! is_server_running; then
        log_warning "Server is not running"
        return 0
    fi

    PID=$(cat "$SERVER_PID_FILE")
    log_info "Stopping server (PID: $PID)..."

    kill $PID 2>/dev/null || true
    sleep 2

    # Force kill if still running
    if ps -p $PID > /dev/null 2>&1; then
        log_warning "Force killing server..."
        kill -9 $PID 2>/dev/null || true
    fi

    rm -f "$SERVER_PID_FILE"
    log_success "Server stopped"
}

# Show server logs
show_logs() {
    if [ -f "$LOG_DIR/server.log" ]; then
        tail -f "$LOG_DIR/server.log"
    else
        log_error "No log file found"
    fi
}

# Run VPS flow test
run_vps_flow_test() {
    print_header "Running VPS Flow Test"

    if ! is_server_running; then
        log_error "Server is not running. Start it with: $0 start"
        exit 1
    fi

    cd "$BACKEND_DIR"
    log_info "Executing test-vps-flow.js..."
    echo ""

    node test-vps-flow.js

    if [ $? -eq 0 ]; then
        log_success "VPS Flow Test PASSED"
        return 0
    else
        log_error "VPS Flow Test FAILED"
        return 1
    fi
}

# Run concurrent downloads test
run_concurrent_test() {
    print_header "Running Concurrent Downloads Test"

    if ! is_server_running; then
        log_error "Server is not running. Start it with: $0 start"
        exit 1
    fi

    cd "$BACKEND_DIR"
    log_info "Executing test-concurrent-downloads.js..."
    echo ""

    node test-concurrent-downloads.js

    if [ $? -eq 0 ]; then
        log_success "Concurrent Downloads Test PASSED"
        return 0
    else
        log_error "Concurrent Downloads Test FAILED"
        return 1
    fi
}

# Run all tests
run_all_tests() {
    print_header "Running All Integration Tests"

    local failed=0

    run_vps_flow_test || failed=1
    echo ""

    run_concurrent_test || failed=1

    echo ""
    print_header "Test Summary"

    if [ $failed -eq 0 ]; then
        log_success "ALL TESTS PASSED"
        return 0
    else
        log_error "SOME TESTS FAILED"
        return 1
    fi
}

# Cleanup test data
cleanup() {
    print_header "Cleaning Up Test Data"

    log_info "Removing test chapters from storage..."
    STORAGE_DIR="/home/ren/ios/MangaReader/storage/manga/one-piece_1695365223767"

    if [ -d "$STORAGE_DIR" ]; then
        rm -rf "$STORAGE_DIR"
        log_success "Test data removed"
    else
        log_info "No test data found"
    fi
}

# Show help
show_help() {
    cat << EOF
MangaReader Backend Integration Test Runner

Usage: $0 [COMMAND]

Commands:
    start           Start the server in background
    stop            Stop the server
    restart         Restart the server
    logs            Show server logs (tail -f)
    status          Check server status
    vps-flow        Run VPS flow integration test
    concurrent      Run concurrent downloads test
    all             Run all tests
    cleanup         Clean up test data
    help            Show this help message

Examples:
    $0 start              # Start server
    $0 vps-flow           # Run VPS flow test
    $0 all                # Run all tests
    $0 cleanup            # Clean up test data
    $0 stop               # Stop server

For full testing workflow:
    $0 start && $0 all && $0 cleanup && $0 stop

EOF
}

# Main
case "${1:-}" in
    start)
        start_server
        ;;
    stop)
        stop_server
        ;;
    restart)
        stop_server
        sleep 1
        start_server
        ;;
    logs)
        show_logs
        ;;
    status)
        if is_server_running; then
            log_success "Server is running (PID: $(cat $SERVER_PID_FILE))"
            exit 0
        else
            log_error "Server is not running"
            exit 1
        fi
        ;;
    vps-flow)
        run_vps_flow_test
        ;;
    concurrent)
        run_concurrent_test
        ;;
    all)
        run_all_tests
        ;;
    cleanup)
        cleanup
        ;;
    help|--help|-h)
        show_help
        ;;
    *)
        log_error "Unknown command: ${1:-}"
        echo ""
        show_help
        exit 1
        ;;
esac