import React from "react";
import { Terminal, CheckCircle, AlertTriangle, CircleDashed } from "lucide-react";
import { ToolViewProps } from "./types";
import { extractCommand, extractCommandOutput, extractExitCode, formatTimestamp, getToolTitle } from "./utils";
import { cn } from "@/lib/utils";

export function CommandToolView({ 
  name = "execute-command",
  assistantContent, 
  toolContent,
  assistantTimestamp,
  toolTimestamp,
  isSuccess = true,
  isStreaming = false
}: ToolViewProps) {
  // Extract command with improved XML parsing
  const rawCommand = React.useMemo(() => {
    if (!assistantContent) return null;
    
    try {
      // Try to parse JSON content first
      const parsed = JSON.parse(assistantContent);
      if (parsed.content) {
        // Look for execute-command tag
        const commandMatch = parsed.content.match(/<execute-command[^>]*>([\s\S]*?)<\/execute-command>/);
        if (commandMatch) {
          return commandMatch[1].trim();
        }
      }
    } catch (e) {
      // If JSON parsing fails, try direct XML extraction
      const commandMatch = assistantContent.match(/<execute-command[^>]*>([\s\S]*?)<\/execute-command>/);
      if (commandMatch) {
        return commandMatch[1].trim();
      }
    }
    
    return null;
  }, [assistantContent]);

  // Clean the command by removing any leading/trailing whitespace and newlines
  const command = rawCommand
    ?.replace(/^suna@computer:~\$\s*/g, '') // Remove prompt prefix
    ?.replace(/\\n/g, '') // Remove escaped newlines
    ?.replace(/\n/g, '') // Remove actual newlines
    ?.trim(); // Clean up any remaining whitespace
  
  // Extract and clean the output with improved parsing
  const output = React.useMemo(() => {
    if (!toolContent) return null;
    
    try {
      // Try to parse JSON content first
      const parsed = JSON.parse(toolContent);
      if (parsed.content) {
        // Look for tool_result tag
        const toolResultMatch = parsed.content.match(/<tool_result>\s*<execute-command>([\s\S]*?)<\/execute-command>\s*<\/tool_result>/);
        if (toolResultMatch) {
          return toolResultMatch[1].trim();
        }
        
        // Look for output field in a ToolResult pattern
        const outputMatch = parsed.content.match(/ToolResult\(.*?output='([\s\S]*?)'.*?\)/);
        if (outputMatch) {
          return outputMatch[1].replace(/\\n/g, '\n').replace(/\\"/g, '"');
        }
        
        // Try to parse as direct JSON
        try {
          const outputJson = JSON.parse(parsed.content);
          if (outputJson.output) {
            return outputJson.output;
          }
        } catch (e) {
          // If JSON parsing fails, use the content as-is
          return parsed.content;
        }
      }
    } catch (e) {
      // If JSON parsing fails, try direct XML extraction
      const toolResultMatch = toolContent.match(/<tool_result>\s*<execute-command>([\s\S]*?)<\/execute-command>\s*<\/tool_result>/);
      if (toolResultMatch) {
        return toolResultMatch[1].trim();
      }
      
      const outputMatch = toolContent.match(/ToolResult\(.*?output='([\s\S]*?)'.*?\)/);
      if (outputMatch) {
        return outputMatch[1].replace(/\\n/g, '\n').replace(/\\"/g, '"');
      }
    }
    
    return toolContent;
  }, [toolContent]);
  
  const exitCode = extractExitCode(toolContent);
  const toolTitle = getToolTitle(name);
  
  return (
    <div className="flex flex-col h-full">
      <div className="flex-1 p-4 overflow-auto">
        <div className="border border-zinc-200 dark:border-zinc-800 rounded-md overflow-hidden h-full flex flex-col">
          <div className="flex items-center p-2 bg-zinc-100 dark:bg-zinc-900 justify-between border-b border-zinc-200 dark:border-zinc-800">
            <div className="flex items-center">
              <Terminal className="h-4 w-4 mr-2 text-zinc-600 dark:text-zinc-400" />
              <span className="text-xs font-medium text-zinc-700 dark:text-zinc-300">Terminal</span>
            </div>
            {exitCode !== null && !isStreaming && (
              <span className={cn(
                "text-xs flex items-center",
                isSuccess ? "text-emerald-600 dark:text-emerald-400" : "text-red-600 dark:text-red-400"
              )}>
                <span className="h-1.5 w-1.5 rounded-full mr-1.5 bg-current"></span>
                Exit: {exitCode}
              </span>
            )}
          </div>
          
          <div className="terminal-container flex-1 overflow-auto bg-black text-zinc-300 font-mono">
            <div className="p-3 text-xs">
              {command && output && !isStreaming && (
                <div className="space-y-2">
                  <div className="flex items-start">
                    <span className="text-emerald-400 shrink-0 mr-2">suna@computer:~$</span>
                    <span className="text-zinc-300">{command}</span>
                  </div>
                  
                  <div className="whitespace-pre-wrap break-words text-zinc-400 pl-0">
                    {output}
                  </div>
                  
                  {isSuccess && <div className="text-emerald-400 mt-1">suna@computer:~$ _</div>}
                </div>
              )}
              
              {command && !output && !isStreaming && (
                <div className="space-y-2">
                  <div className="flex items-start">
                    <span className="text-emerald-400 shrink-0 mr-2">suna@computer:~$</span>
                    <span className="text-zinc-300">{command}</span>
                  </div>
                  <div className="flex items-center h-4">
                    <div className="w-2 h-4 bg-zinc-500 animate-pulse"></div>
                  </div>
                </div>
              )}
              
              {!command && !output && !isStreaming && (
                <div className="flex items-start">
                  <span className="text-emerald-400 shrink-0 mr-2">suna@computer:~$</span>
                  <span className="w-2 h-4 bg-zinc-500 animate-pulse"></span>
                </div>
              )}
              
              {isStreaming && (
                <div className="space-y-2">
                  <div className="flex items-start">
                    <span className="text-emerald-400 shrink-0 mr-2">suna@computer:~$</span>
                    <span className="text-zinc-300">{command || 'running command...'}</span>
                  </div>
                  <div className="flex items-center gap-2 text-zinc-400">
                    <CircleDashed className="h-3 w-3 animate-spin text-blue-400" />
                    <span>Command execution in progress...</span>
                  </div>
                </div>
              )}
            </div>
          </div>
        </div>
      </div>
      
      {/* Footer */}
      <div className="p-4 border-t border-zinc-200 dark:border-zinc-800">
        <div className="flex items-center justify-between text-xs text-zinc-500 dark:text-zinc-400">
          {!isStreaming && (
            <div className="flex items-center gap-2">
              {isSuccess ? (
                <CheckCircle className="h-3.5 w-3.5 text-emerald-500" />
              ) : (
                <AlertTriangle className="h-3.5 w-3.5 text-red-500" />
              )}
              <span>
                {isSuccess 
                  ? `Command completed successfully${exitCode !== null ? ` (exit code: ${exitCode})` : ''}` 
                  : `Command failed${exitCode !== null ? ` with exit code ${exitCode}` : ''}`}
              </span>
            </div>
          )}
          
          {isStreaming && (
            <div className="flex items-center gap-2">
              <CircleDashed className="h-3.5 w-3.5 text-blue-500 animate-spin" />
              <span>Executing command...</span>
            </div>
          )}
          
          <div className="text-xs">
            {toolTimestamp && !isStreaming 
              ? formatTimestamp(toolTimestamp) 
              : assistantTimestamp 
                ? formatTimestamp(assistantTimestamp)
                : ''}
          </div>
        </div>
      </div>
    </div>
  );
}