package main

import (
	"context"
	"crypto/rand"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"
	"strconv"
	"sync"
	"time"

	"git.teamworkapps.com/shortcut/cremote/client"
	"github.com/mark3labs/mcp-go/mcp"
	"github.com/mark3labs/mcp-go/server"
)

const Version = "2.0.0"

// ClientContext provides a unified interface for accessing client state
// This allows the same tool handlers to work with both single-client and multi-client modes
type ClientContext interface {
	GetClient() *client.Client
	GetCurrentTab() string
	SetCurrentTab(tabID string)
	AddToTabHistory(tabID string)
	GetTabHistory() []string
	SetIframeMode(mode bool)
	GetIframeMode() bool
	AddScreenshot(path string)
	GetScreenshots() []string
}

// ClientSession represents an isolated session for a single MCP client
type ClientSession struct {
	ID          string
	client      *client.Client
	currentTab  string
	tabHistory  []string
	iframeMode  bool
	screenshots []string
	createdAt   time.Time
	lastUsed    time.Time
	mu          sync.RWMutex
}

// SessionManager manages multiple client sessions
type SessionManager struct {
	sessions map[string]*ClientSession
	mu       sync.RWMutex
	host     string
	port     int
}

// CremoteServer wraps the cremote client for MCP (legacy single-client mode)
type CremoteServer struct {
	client      *client.Client
	currentTab  string
	tabHistory  []string
	iframeMode  bool
	screenshots []string
}

// NewSessionManager creates a new session manager
func NewSessionManager(host string, port int) *SessionManager {
	return &SessionManager{
		sessions: make(map[string]*ClientSession),
		host:     host,
		port:     port,
	}
}

// generateSessionID creates a cryptographically secure session ID
func generateSessionID() string {
	bytes := make([]byte, 16)
	rand.Read(bytes)
	return hex.EncodeToString(bytes)
}

// CreateSession creates a new client session
func (sm *SessionManager) CreateSession() *ClientSession {
	sm.mu.Lock()
	defer sm.mu.Unlock()

	session := &ClientSession{
		ID:          generateSessionID(),
		client:      client.NewClient(sm.host, sm.port),
		tabHistory:  make([]string, 0),
		screenshots: make([]string, 0),
		createdAt:   time.Now(),
		lastUsed:    time.Now(),
	}

	sm.sessions[session.ID] = session
	return session
}

// GetSession retrieves a session by ID
func (sm *SessionManager) GetSession(sessionID string) (*ClientSession, bool) {
	sm.mu.RLock()
	defer sm.mu.RUnlock()

	session, exists := sm.sessions[sessionID]
	if exists {
		session.mu.Lock()
		session.lastUsed = time.Now()
		session.mu.Unlock()
	}
	return session, exists
}

// RemoveSession removes a session
func (sm *SessionManager) RemoveSession(sessionID string) {
	sm.mu.Lock()
	defer sm.mu.Unlock()
	delete(sm.sessions, sessionID)
}

// CleanupExpiredSessions removes sessions that haven't been used recently
func (sm *SessionManager) CleanupExpiredSessions(maxAge time.Duration) {
	sm.mu.Lock()
	defer sm.mu.Unlock()

	now := time.Now()
	for id, session := range sm.sessions {
		session.mu.RLock()
		if now.Sub(session.lastUsed) > maxAge {
			delete(sm.sessions, id)
		}
		session.mu.RUnlock()
	}
}

// Session-aware methods for ClientSession
func (cs *ClientSession) GetCurrentTab() string {
	cs.mu.RLock()
	defer cs.mu.RUnlock()
	return cs.currentTab
}

func (cs *ClientSession) SetCurrentTab(tabID string) {
	cs.mu.Lock()
	defer cs.mu.Unlock()
	cs.currentTab = tabID
	cs.lastUsed = time.Now()
}

func (cs *ClientSession) AddToTabHistory(tabID string) {
	cs.mu.Lock()
	defer cs.mu.Unlock()
	cs.tabHistory = append(cs.tabHistory, tabID)
	cs.lastUsed = time.Now()
}

func (cs *ClientSession) GetTabHistory() []string {
	cs.mu.RLock()
	defer cs.mu.RUnlock()
	// Return a copy to prevent external modification
	history := make([]string, len(cs.tabHistory))
	copy(history, cs.tabHistory)
	return history
}

func (cs *ClientSession) SetIframeMode(mode bool) {
	cs.mu.Lock()
	defer cs.mu.Unlock()
	cs.iframeMode = mode
	cs.lastUsed = time.Now()
}

func (cs *ClientSession) GetIframeMode() bool {
	cs.mu.RLock()
	defer cs.mu.RUnlock()
	return cs.iframeMode
}

func (cs *ClientSession) AddScreenshot(path string) {
	cs.mu.Lock()
	defer cs.mu.Unlock()
	cs.screenshots = append(cs.screenshots, path)
	cs.lastUsed = time.Now()
}

func (cs *ClientSession) GetScreenshots() []string {
	cs.mu.RLock()
	defer cs.mu.RUnlock()
	// Return a copy to prevent external modification
	screenshots := make([]string, len(cs.screenshots))
	copy(screenshots, cs.screenshots)
	return screenshots
}

// Implement ClientContext interface for ClientSession
func (cs *ClientSession) GetClient() *client.Client {
	return cs.client
}

// NewCremoteServer creates a new cremote MCP server (legacy single-client mode)
func NewCremoteServer(host string, port int) *CremoteServer {
	return &CremoteServer{
		client:      client.NewClient(host, port),
		tabHistory:  make([]string, 0),
		screenshots: make([]string, 0),
	}
}

// Implement ClientContext interface for CremoteServer (legacy mode)
func (cs *CremoteServer) GetClient() *client.Client {
	return cs.client
}

func (cs *CremoteServer) GetCurrentTab() string {
	return cs.currentTab
}

func (cs *CremoteServer) SetCurrentTab(tabID string) {
	cs.currentTab = tabID
}

func (cs *CremoteServer) AddToTabHistory(tabID string) {
	cs.tabHistory = append(cs.tabHistory, tabID)
}

func (cs *CremoteServer) GetTabHistory() []string {
	// Return a copy to prevent external modification
	history := make([]string, len(cs.tabHistory))
	copy(history, cs.tabHistory)
	return history
}

func (cs *CremoteServer) SetIframeMode(mode bool) {
	cs.iframeMode = mode
}

func (cs *CremoteServer) GetIframeMode() bool {
	return cs.iframeMode
}

func (cs *CremoteServer) AddScreenshot(path string) {
	cs.screenshots = append(cs.screenshots, path)
}

func (cs *CremoteServer) GetScreenshots() []string {
	// Return a copy to prevent external modification
	screenshots := make([]string, len(cs.screenshots))
	copy(screenshots, cs.screenshots)
	return screenshots
}

// Helper functions for parameter extraction
func getStringParam(params map[string]any, key, defaultValue string) string {
	if val, ok := params[key].(string); ok {
		return val
	}
	return defaultValue
}

func getBoolParam(params map[string]any, key string, defaultValue bool) bool {
	if val, ok := params[key].(bool); ok {
		return val
	}
	return defaultValue
}

func getIntParam(params map[string]any, key string, defaultValue int) int {
	if val, ok := params[key].(float64); ok {
		return int(val)
	}
	if val, ok := params[key].(int); ok {
		return val
	}
	return defaultValue
}

// createToolHandlers creates session-aware tool handlers that work with ClientContext
func createToolHandlers(getContext func() ClientContext) map[string]func(context.Context, mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	handlers := make(map[string]func(context.Context, mcp.CallToolRequest) (*mcp.CallToolResult, error))

	// Version tool handler
	handlers["version_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		daemonVersion, err := clientCtx.GetClient().GetVersion()
		if err != nil {
			daemonVersion = fmt.Sprintf("Unable to connect: %v", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(fmt.Sprintf("MCP Server version: %s\nDaemon version: %s", Version, daemonVersion)),
			},
			IsError: false,
		}, nil
	}

	// Navigation tool handler
	handlers["web_navigate_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		url := getStringParam(params, "url", "")
		if url == "" {
			return nil, fmt.Errorf("url parameter is required")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		takeScreenshot := getBoolParam(params, "screenshot", false)

		// If no tab specified and no current tab, create a new one
		if tab == "" {
			newTab, err := clientCtx.GetClient().OpenTab(timeout)
			if err != nil {
				return nil, fmt.Errorf("failed to create new tab: %w", err)
			}
			tab = newTab
			clientCtx.SetCurrentTab(tab)
			clientCtx.AddToTabHistory(tab)
		}

		// Load the URL
		err := clientCtx.GetClient().LoadURL(tab, url, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to load URL: %w", err)
		}

		message := fmt.Sprintf("Successfully navigated to %s in tab %s", url, tab)

		// Take screenshot if requested
		if takeScreenshot {
			screenshotPath := fmt.Sprintf("/tmp/navigate-%d.png", time.Now().Unix())
			err = clientCtx.GetClient().TakeScreenshot(tab, screenshotPath, false, timeout)
			if err == nil {
				clientCtx.AddScreenshot(screenshotPath)
				message += fmt.Sprintf(" (screenshot saved to %s)", screenshotPath)
			}
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(message),
			},
			IsError: false,
		}, nil
	}

	// Legacy navigation tool handler (for backward compatibility)
	handlers["web_navigate"] = handlers["web_navigate_cremotemcp"]

	// Web interaction tool handler
	handlers["web_interact"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		action := getStringParam(params, "action", "")
		selector := getStringParam(params, "selector", "")
		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		if action == "" {
			return nil, fmt.Errorf("action parameter is required")
		}
		if selector == "" {
			return nil, fmt.Errorf("selector parameter is required")
		}

		var err error
		var message string

		switch action {
		case "click":
			err = clientCtx.GetClient().ClickElement(tab, selector, timeout)
			message = fmt.Sprintf("Clicked element: %s", selector)

		case "fill":
			value := getStringParam(params, "value", "")
			if value == "" {
				return nil, fmt.Errorf("value parameter is required for fill action")
			}
			err = clientCtx.GetClient().FillFormField(tab, selector, value, timeout)
			message = fmt.Sprintf("Filled element %s with value: %s", selector, value)

		case "submit":
			err = clientCtx.GetClient().SubmitForm(tab, selector, timeout)
			message = fmt.Sprintf("Submitted form: %s", selector)

		case "select":
			value := getStringParam(params, "value", "")
			if value == "" {
				return nil, fmt.Errorf("value parameter is required for select action")
			}
			err = clientCtx.GetClient().SelectElement(tab, selector, value, timeout)
			message = fmt.Sprintf("Selected option %s in element %s", value, selector)

		default:
			return nil, fmt.Errorf("unknown action: %s", action)
		}

		if err != nil {
			return nil, fmt.Errorf("failed to %s: %w", action, err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(message),
			},
			IsError: false,
		}, nil
	}

	// Web extract tool handler
	handlers["web_extract"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		extractType := getStringParam(params, "type", "")
		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		if extractType == "" {
			return nil, fmt.Errorf("type parameter is required")
		}

		var result interface{}
		var err error

		switch extractType {
		case "source":
			result, err = clientCtx.GetClient().GetPageSource(tab, timeout)
		case "element":
			selector := getStringParam(params, "selector", "")
			if selector == "" {
				return nil, fmt.Errorf("selector parameter is required for element extraction")
			}
			result, err = clientCtx.GetClient().GetElementHTML(tab, selector, timeout)
		case "javascript":
			code := getStringParam(params, "code", "")
			if code == "" {
				return nil, fmt.Errorf("code parameter is required for javascript extraction")
			}
			result, err = clientCtx.GetClient().EvalJS(tab, code, timeout)
		default:
			return nil, fmt.Errorf("unknown extraction type: %s", extractType)
		}

		if err != nil {
			return nil, fmt.Errorf("failed to extract %s: %w", extractType, err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Web screenshot tool handler
	handlers["web_screenshot"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		output := getStringParam(params, "output", "")
		if output == "" {
			return nil, fmt.Errorf("output parameter is required")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		fullPage := getBoolParam(params, "full_page", false)

		err := clientCtx.GetClient().TakeScreenshot(tab, output, fullPage, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to take screenshot: %w", err)
		}

		clientCtx.AddScreenshot(output)

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(fmt.Sprintf("Screenshot saved to: %s", output)),
			},
			IsError: false,
		}, nil
	}

	// Web manage tabs tool handler
	handlers["web_manage_tabs"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		action := getStringParam(params, "action", "")
		tab := getStringParam(params, "tab", "")
		timeout := getIntParam(params, "timeout", 5)

		if action == "" {
			return nil, fmt.Errorf("action parameter is required")
		}

		var err error
		var message string

		switch action {
		case "open":
			newTab, err := clientCtx.GetClient().OpenTab(timeout)
			if err != nil {
				return nil, fmt.Errorf("failed to open new tab: %w", err)
			}
			clientCtx.SetCurrentTab(newTab)
			clientCtx.AddToTabHistory(newTab)
			message = fmt.Sprintf("Opened new tab: %s", newTab)

		case "close":
			if tab == "" {
				tab = clientCtx.GetCurrentTab()
			}
			if tab == "" {
				return nil, fmt.Errorf("no tab to close")
			}
			err = clientCtx.GetClient().CloseTab(tab, timeout)
			if err != nil {
				return nil, fmt.Errorf("failed to close tab: %w", err)
			}
			// Clear current tab if we closed it
			if tab == clientCtx.GetCurrentTab() {
				clientCtx.SetCurrentTab("")
			}
			message = fmt.Sprintf("Closed tab: %s", tab)

		case "list":
			tabs, err := clientCtx.GetClient().ListTabs()
			if err != nil {
				return nil, fmt.Errorf("failed to list tabs: %w", err)
			}
			message = fmt.Sprintf("Found %d tabs: %v", len(tabs), tabs)

		case "switch":
			if tab == "" {
				return nil, fmt.Errorf("tab parameter is required for switch action")
			}
			clientCtx.SetCurrentTab(tab)
			clientCtx.AddToTabHistory(tab)
			message = fmt.Sprintf("Switched to tab: %s", tab)

		default:
			return nil, fmt.Errorf("unknown tab action: %s", action)
		}

		if err != nil {
			return nil, fmt.Errorf("failed to %s tab: %w", action, err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(message),
			},
			IsError: false,
		}, nil
	}

	// Web iframe tool handler
	handlers["web_iframe"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		action := getStringParam(params, "action", "")
		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		if action == "" {
			return nil, fmt.Errorf("action parameter is required")
		}

		var err error
		var message string

		switch action {
		case "enter":
			selector := getStringParam(params, "selector", "")
			if selector == "" {
				return nil, fmt.Errorf("selector parameter is required for enter action")
			}
			err = clientCtx.GetClient().SwitchToIframe(tab, selector, timeout)
			clientCtx.SetIframeMode(true)
			message = fmt.Sprintf("Entered iframe: %s", selector)

		case "exit":
			err = clientCtx.GetClient().SwitchToMain(tab, timeout)
			clientCtx.SetIframeMode(false)
			message = "Exited iframe context"

		default:
			return nil, fmt.Errorf("unknown iframe action: %s", action)
		}

		if err != nil {
			return nil, fmt.Errorf("failed to %s iframe: %w", action, err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(message),
			},
			IsError: false,
		}, nil
	}

	// Console logs tool handler
	handlers["console_logs"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		clear := getBoolParam(params, "clear", false)

		logs, err := clientCtx.GetClient().GetConsoleLogs(tab, clear)
		if err != nil {
			return nil, fmt.Errorf("failed to get console logs: %w", err)
		}

		logsJSON, err := json.MarshalIndent(logs, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal logs: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(logsJSON)),
			},
			IsError: false,
		}, nil
	}

	// Console command tool handler
	handlers["console_command"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		command := getStringParam(params, "command", "")
		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		if command == "" {
			return nil, fmt.Errorf("command parameter is required")
		}

		result, err := clientCtx.GetClient().EvalJS(tab, command, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to execute console command: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// File upload tool handler
	handlers["file_upload"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		localPath := getStringParam(params, "local_path", "")
		containerPath := getStringParam(params, "container_path", "")

		if localPath == "" {
			return nil, fmt.Errorf("local_path parameter is required")
		}

		result, err := clientCtx.GetClient().UploadFileToContainer(localPath, containerPath)
		if err != nil {
			return nil, fmt.Errorf("failed to upload file: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(fmt.Sprintf("File uploaded successfully to: %s", result)),
			},
			IsError: false,
		}, nil
	}

	// File download tool handler
	handlers["file_download"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		containerPath := getStringParam(params, "container_path", "")
		localPath := getStringParam(params, "local_path", "")

		if containerPath == "" {
			return nil, fmt.Errorf("container_path parameter is required")
		}
		if localPath == "" {
			return nil, fmt.Errorf("local_path parameter is required")
		}

		err := clientCtx.GetClient().DownloadFileFromContainer(containerPath, localPath)
		if err != nil {
			return nil, fmt.Errorf("failed to download file: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(fmt.Sprintf("File downloaded successfully to: %s", localPath)),
			},
			IsError: false,
		}, nil
	}

	// Enhanced tools with _cremotemcp suffix

	// Web element check tool handler
	handlers["web_element_check_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		selector := getStringParam(params, "selector", "")
		if selector == "" {
			return nil, fmt.Errorf("selector parameter is required")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		checkType := getStringParam(params, "check_type", "exists")

		result, err := clientCtx.GetClient().CheckElement(tab, selector, checkType, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to check element: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Web element attributes tool handler
	handlers["web_element_attributes_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		selector := getStringParam(params, "selector", "")
		if selector == "" {
			return nil, fmt.Errorf("selector parameter is required")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		attributes := getStringParam(params, "attributes", "all")

		result, err := clientCtx.GetClient().GetElementAttributes(tab, selector, attributes, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to get element attributes: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Web extract multiple tool handler
	handlers["web_extract_multiple_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		selectors, ok := params["selectors"].(map[string]interface{})
		if !ok {
			return nil, fmt.Errorf("selectors parameter is required and must be an object")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		// Convert selectors to map[string]string
		selectorsMap := make(map[string]string)
		for key, value := range selectors {
			if strValue, ok := value.(string); ok {
				selectorsMap[key] = strValue
			}
		}

		result, err := clientCtx.GetClient().ExtractMultiple(tab, selectorsMap, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to extract multiple elements: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Add remaining key tools

	// Web extract links tool handler
	handlers["web_extract_links_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		containerSelector := getStringParam(params, "container_selector", "")
		hrefPattern := getStringParam(params, "href_pattern", "")
		textPattern := getStringParam(params, "text_pattern", "")

		result, err := clientCtx.GetClient().ExtractLinks(tab, containerSelector, hrefPattern, textPattern, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to extract links: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Web extract table tool handler
	handlers["web_extract_table_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		selector := getStringParam(params, "selector", "")
		if selector == "" {
			return nil, fmt.Errorf("selector parameter is required")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		includeHeaders := getBoolParam(params, "include_headers", true)

		result, err := clientCtx.GetClient().ExtractTable(tab, selector, includeHeaders, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to extract table: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Web page info tool handler
	handlers["web_page_info_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		result, err := clientCtx.GetClient().GetPageInfo(tab, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to get page info: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// File management tool handler
	handlers["file_management_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		operation := getStringParam(params, "operation", "")
		pattern := getStringParam(params, "pattern", "")
		maxAge := getStringParam(params, "max_age", "")

		if operation == "" {
			return nil, fmt.Errorf("operation parameter is required")
		}

		result, err := clientCtx.GetClient().ManageFiles(operation, pattern, maxAge)
		if err != nil {
			return nil, fmt.Errorf("failed to manage files: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Accessibility tree tool handlers

	// Get full accessibility tree
	handlers["get_accessibility_tree_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)

		// Parse depth parameter
		var depth *int
		if depthParam := getIntParam(params, "depth", -1); depthParam >= 0 {
			depth = &depthParam
		}

		result, err := clientCtx.GetClient().GetAccessibilityTree(tab, depth, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to get accessibility tree: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Get partial accessibility tree for specific element
	handlers["get_partial_accessibility_tree_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		selector := getStringParam(params, "selector", "")
		if selector == "" {
			return nil, fmt.Errorf("selector parameter is required")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		fetchRelatives := getBoolParam(params, "fetch_relatives", true)

		result, err := clientCtx.GetClient().GetPartialAccessibilityTree(tab, selector, fetchRelatives, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to get partial accessibility tree: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	// Query accessibility tree for nodes matching criteria
	handlers["query_accessibility_tree_cremotemcp"] = func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
		clientCtx := getContext()
		params, ok := request.Params.Arguments.(map[string]any)
		if !ok {
			return nil, fmt.Errorf("invalid arguments format")
		}

		tab := getStringParam(params, "tab", clientCtx.GetCurrentTab())
		timeout := getIntParam(params, "timeout", 5)
		selector := getStringParam(params, "selector", "")
		accessibleName := getStringParam(params, "accessible_name", "")
		role := getStringParam(params, "role", "")

		// At least one search criteria must be provided
		if selector == "" && accessibleName == "" && role == "" {
			return nil, fmt.Errorf("at least one search criteria (selector, accessible_name, or role) must be provided")
		}

		result, err := clientCtx.GetClient().QueryAccessibilityTree(tab, selector, accessibleName, role, timeout)
		if err != nil {
			return nil, fmt.Errorf("failed to query accessibility tree: %w", err)
		}

		resultJSON, err := json.MarshalIndent(result, "", "  ")
		if err != nil {
			return nil, fmt.Errorf("failed to marshal result: %w", err)
		}

		return &mcp.CallToolResult{
			Content: []mcp.Content{
				mcp.NewTextContent(string(resultJSON)),
			},
			IsError: false,
		}, nil
	}

	return handlers
}

// registerAllTools registers all tools with their schemas
func registerAllTools(mcpServer *server.MCPServer, handlers map[string]func(context.Context, mcp.CallToolRequest) (*mcp.CallToolResult, error)) {
	// Version tool
	mcpServer.AddTool(mcp.Tool{
		Name:        "version_cremotemcp",
		Description: "Get version information for MCP server and daemon",
		InputSchema: mcp.ToolInputSchema{
			Type:       "object",
			Properties: map[string]any{},
			Required:   []string{},
		},
	}, handlers["version_cremotemcp"])

	// Navigation tools
	mcpServer.AddTool(mcp.Tool{
		Name:        "web_navigate_cremotemcp",
		Description: "Navigate to a URL and optionally take a screenshot",
		InputSchema: mcp.ToolInputSchema{
			Type: "object",
			Properties: map[string]any{
				"url": map[string]any{
					"type":        "string",
					"description": "URL to navigate to",
				},
				"tab": map[string]any{
					"type":        "string",
					"description": "Tab ID (optional, uses current tab)",
				},
				"timeout": map[string]any{
					"type":        "integer",
					"description": "Timeout in seconds (default: 5)",
					"default":     5,
				},
				"screenshot": map[string]any{
					"type":        "boolean",
					"description": "Take screenshot after navigation",
				},
			},
			Required: []string{"url"},
		},
	}, handlers["web_navigate_cremotemcp"])

	// Legacy navigation tool
	mcpServer.AddTool(mcp.Tool{
		Name:        "web_navigate",
		Description: "Navigate to a URL and optionally take a screenshot",
		InputSchema: mcp.ToolInputSchema{
			Type: "object",
			Properties: map[string]any{
				"url": map[string]any{
					"type":        "string",
					"description": "URL to navigate to",
				},
				"tab": map[string]any{
					"type":        "string",
					"description": "Tab ID (optional, uses current tab)",
				},
				"timeout": map[string]any{
					"type":        "integer",
					"description": "Timeout in seconds (default: 5)",
					"default":     5,
				},
				"screenshot": map[string]any{
					"type":        "boolean",
					"description": "Take screenshot after navigation",
				},
			},
			Required: []string{"url"},
		},
	}, handlers["web_navigate"])

	// Interaction tool
	mcpServer.AddTool(mcp.Tool{
		Name:        "web_interact",
		Description: "Interact with web elements (click, fill, submit)",
		InputSchema: mcp.ToolInputSchema{
			Type: "object",
			Properties: map[string]any{
				"action": map[string]any{
					"type":        "string",
					"description": "Action to perform",
					"enum":        []string{"click", "fill", "submit", "select"},
				},
				"selector": map[string]any{
					"type":        "string",
					"description": "CSS selector for the element",
				},
				"tab": map[string]any{
					"type":        "string",
					"description": "Tab ID (optional)",
				},
				"timeout": map[string]any{
					"type":        "integer",
					"description": "Timeout in seconds",
					"default":     5,
				},
				"value": map[string]any{
					"type":        "string",
					"description": "Value to fill (for fill/select actions)",
				},
			},
			Required: []string{"action", "selector"},
		},
	}, handlers["web_interact"])

	// Add more key tools
	if handler, exists := handlers["web_extract"]; exists {
		mcpServer.AddTool(mcp.Tool{
			Name:        "web_extract",
			Description: "Extract data from the page (source, element HTML, or execute JavaScript)",
			InputSchema: mcp.ToolInputSchema{
				Type: "object",
				Properties: map[string]any{
					"type": map[string]any{
						"type":        "string",
						"description": "Type of extraction",
						"enum":        []string{"source", "element", "javascript"},
					},
					"selector": map[string]any{
						"type":        "string",
						"description": "CSS selector (for element type)",
					},
					"code": map[string]any{
						"type":        "string",
						"description": "JavaScript code (for javascript type)",
					},
					"tab": map[string]any{
						"type":        "string",
						"description": "Tab ID (optional)",
					},
					"timeout": map[string]any{
						"type":        "integer",
						"description": "Timeout in seconds",
						"default":     5,
					},
				},
				Required: []string{"type"},
			},
		}, handler)
	}

	if handler, exists := handlers["web_screenshot"]; exists {
		mcpServer.AddTool(mcp.Tool{
			Name:        "web_screenshot",
			Description: "Take a screenshot of the current page",
			InputSchema: mcp.ToolInputSchema{
				Type: "object",
				Properties: map[string]any{
					"output": map[string]any{
						"type":        "string",
						"description": "Output file path",
					},
					"tab": map[string]any{
						"type":        "string",
						"description": "Tab ID (optional)",
					},
					"timeout": map[string]any{
						"type":        "integer",
						"description": "Timeout in seconds",
						"default":     5,
					},
					"full_page": map[string]any{
						"type":        "boolean",
						"description": "Capture full page",
						"default":     false,
					},
				},
				Required: []string{"output"},
			},
		}, handler)
	}

	// Accessibility tree tools
	if handler, exists := handlers["get_accessibility_tree_cremotemcp"]; exists {
		mcpServer.AddTool(mcp.Tool{
			Name:        "get_accessibility_tree_cremotemcp",
			Description: "Get the full accessibility tree for a page or with limited depth",
			InputSchema: mcp.ToolInputSchema{
				Type: "object",
				Properties: map[string]any{
					"tab": map[string]any{
						"type":        "string",
						"description": "Tab ID (optional, uses current tab)",
					},
					"depth": map[string]any{
						"type":        "integer",
						"description": "Maximum depth to retrieve (optional, omit for full tree)",
						"minimum":     0,
					},
					"timeout": map[string]any{
						"type":        "integer",
						"description": "Timeout in seconds",
						"default":     5,
					},
				},
				Required: []string{},
			},
		}, handler)
	}

	if handler, exists := handlers["get_partial_accessibility_tree_cremotemcp"]; exists {
		mcpServer.AddTool(mcp.Tool{
			Name:        "get_partial_accessibility_tree_cremotemcp",
			Description: "Get accessibility tree for a specific element and its relatives",
			InputSchema: mcp.ToolInputSchema{
				Type: "object",
				Properties: map[string]any{
					"selector": map[string]any{
						"type":        "string",
						"description": "CSS selector for the target element",
					},
					"tab": map[string]any{
						"type":        "string",
						"description": "Tab ID (optional, uses current tab)",
					},
					"fetch_relatives": map[string]any{
						"type":        "boolean",
						"description": "Whether to fetch ancestors, siblings, and children",
						"default":     true,
					},
					"timeout": map[string]any{
						"type":        "integer",
						"description": "Timeout in seconds",
						"default":     5,
					},
				},
				Required: []string{"selector"},
			},
		}, handler)
	}

	if handler, exists := handlers["query_accessibility_tree_cremotemcp"]; exists {
		mcpServer.AddTool(mcp.Tool{
			Name:        "query_accessibility_tree_cremotemcp",
			Description: "Query accessibility tree for nodes matching specific criteria",
			InputSchema: mcp.ToolInputSchema{
				Type: "object",
				Properties: map[string]any{
					"tab": map[string]any{
						"type":        "string",
						"description": "Tab ID (optional, uses current tab)",
					},
					"selector": map[string]any{
						"type":        "string",
						"description": "CSS selector to limit search scope (optional)",
					},
					"accessible_name": map[string]any{
						"type":        "string",
						"description": "Accessible name to match (optional)",
					},
					"role": map[string]any{
						"type":        "string",
						"description": "ARIA role to match (optional)",
					},
					"timeout": map[string]any{
						"type":        "integer",
						"description": "Timeout in seconds",
						"default":     5,
					},
				},
				Required: []string{},
			},
		}, handler)
	}
}

func main() {
	// Get cremote daemon connection settings
	cremoteHost := os.Getenv("CREMOTE_HOST")
	if cremoteHost == "" {
		cremoteHost = "localhost"
	}

	cremotePortStr := os.Getenv("CREMOTE_PORT")
	cremotePort := 8989
	if cremotePortStr != "" {
		if p, err := strconv.Atoi(cremotePortStr); err == nil {
			cremotePort = p
		}
	}

	// Get transport mode (stdio or http)
	transportMode := os.Getenv("CREMOTE_TRANSPORT")
	if transportMode == "" {
		transportMode = "stdio" // Default to stdio for backward compatibility
	}

	log.Printf("Starting cremote MCP server, transport: %s, connecting to cremote daemon at %s:%d", transportMode, cremoteHost, cremotePort)

	if transportMode == "http" {
		// Multi-client HTTP mode
		sessionManager := NewSessionManager(cremoteHost, cremotePort)
		startHTTPServer(sessionManager)
	} else {
		// Single-client stdio mode (legacy)
		cremoteServer := NewCremoteServer(cremoteHost, cremotePort)
		startStdioServer(cremoteServer)
	}
}

func startStdioServer(cremoteServer *CremoteServer) {
	// Create MCP server
	mcpServer := server.NewMCPServer("cremote-mcp", "2.0.0")

	// Create session-aware tool handlers
	toolHandlers := createToolHandlers(func() ClientContext {
		return cremoteServer
	})

	// Register all tools
	registerAllTools(mcpServer, toolHandlers)

	// Start the server
	log.Printf("Cremote MCP server ready (stdio mode)")
	if err := server.ServeStdio(mcpServer); err != nil {
		log.Fatalf("Server error: %v", err)
	}
}

func startHTTPServer(sessionManager *SessionManager) {
	// Start session cleanup routine
	go func() {
		ticker := time.NewTicker(5 * time.Minute)
		defer ticker.Stop()
		for {
			select {
			case <-ticker.C:
				sessionManager.CleanupExpiredSessions(30 * time.Minute)
			}
		}
	}()

	// Get HTTP server configuration
	httpHost := os.Getenv("CREMOTE_HTTP_HOST")
	if httpHost == "" {
		httpHost = "localhost"
	}

	httpPortStr := os.Getenv("CREMOTE_HTTP_PORT")
	httpPort := 8990
	if httpPortStr != "" {
		if p, err := strconv.Atoi(httpPortStr); err == nil {
			httpPort = p
		}
	}

	// Create HTTP server
	mux := http.NewServeMux()
	mux.HandleFunc("/mcp", func(w http.ResponseWriter, r *http.Request) {
		handleMCPRequest(w, r, sessionManager)
	})

	server := &http.Server{
		Addr:    fmt.Sprintf("%s:%d", httpHost, httpPort),
		Handler: mux,
	}

	log.Printf("Cremote MCP HTTP server ready on %s", server.Addr)
	if err := server.ListenAndServe(); err != nil {
		log.Fatalf("HTTP server error: %v", err)
	}
}

// handleMCPRequest handles HTTP MCP requests with session management
func handleMCPRequest(w http.ResponseWriter, r *http.Request, sessionManager *SessionManager) {
	// Set CORS headers
	w.Header().Set("Access-Control-Allow-Origin", "*")
	w.Header().Set("Access-Control-Allow-Methods", "GET, POST, DELETE, OPTIONS")
	w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Accept, Mcp-Session-Id, MCP-Protocol-Version")

	if r.Method == "OPTIONS" {
		w.WriteHeader(http.StatusOK)
		return
	}

	// Get or create session
	sessionID := r.Header.Get("Mcp-Session-Id")
	var session *ClientSession
	var isNewSession bool

	if sessionID == "" {
		// Create new session for initialization
		session = sessionManager.CreateSession()
		isNewSession = true
		w.Header().Set("Mcp-Session-Id", session.ID)
	} else {
		// Get existing session
		var exists bool
		session, exists = sessionManager.GetSession(sessionID)
		if !exists {
			http.Error(w, "Session not found", http.StatusNotFound)
			return
		}
	}

	// Handle different HTTP methods according to MCP Streamable HTTP spec
	switch r.Method {
	case "POST":
		handleMCPPost(w, r, session, isNewSession)
	case "GET":
		handleMCPGet(w, r, session)
	case "DELETE":
		handleMCPDelete(w, r, sessionManager, sessionID)
	default:
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
	}
}

// handleMCPPost handles POST requests (JSON-RPC messages)
func handleMCPPost(w http.ResponseWriter, r *http.Request, session *ClientSession, isNewSession bool) {
	// Read request body
	var jsonRPCRequest map[string]interface{}
	if err := json.NewDecoder(r.Body).Decode(&jsonRPCRequest); err != nil {
		http.Error(w, "Invalid JSON", http.StatusBadRequest)
		return
	}

	// For now, implement a basic response for initialization
	// TODO: Implement full JSON-RPC handling with session-aware tools
	method, ok := jsonRPCRequest["method"].(string)
	if !ok {
		http.Error(w, "Missing method", http.StatusBadRequest)
		return
	}

	if method == "initialize" {
		// Handle initialization
		response := map[string]interface{}{
			"jsonrpc": "2.0",
			"id":      jsonRPCRequest["id"],
			"result": map[string]interface{}{
				"protocolVersion": "2025-06-18",
				"capabilities": map[string]interface{}{
					"tools": map[string]interface{}{},
				},
				"serverInfo": map[string]interface{}{
					"name":    "cremote-mcp",
					"version": Version,
				},
			},
		}

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(response)
		return
	}

	// For other methods, return not implemented for now
	w.WriteHeader(http.StatusNotImplemented)
	w.Write([]byte("Method not yet implemented in HTTP transport"))
}

// handleMCPGet handles GET requests (SSE streams)
func handleMCPGet(w http.ResponseWriter, r *http.Request, session *ClientSession) {
	// For now, return method not allowed as we don't implement SSE yet
	http.Error(w, "SSE not yet implemented", http.StatusMethodNotAllowed)
}

// handleMCPDelete handles DELETE requests (session termination)
func handleMCPDelete(w http.ResponseWriter, r *http.Request, sessionManager *SessionManager, sessionID string) {
	if sessionID == "" {
		http.Error(w, "No session to delete", http.StatusBadRequest)
		return
	}

	sessionManager.RemoveSession(sessionID)
	w.WriteHeader(http.StatusOK)
	w.Write([]byte("Session terminated"))
}