const { ipcMain, dialog, shell } = require('electron');
const { runPythonCommand } = require('./backend-bridge');
const fs = require('fs-extra');
const path = require('path');

const setupKeyIPCHandlers = () => {
  // List keys handler
  ipcMain.handle('list-keys', async (event) => {
    const kwargs = {};
    return runPythonCommand('list_keys', kwargs, event);
  });

  // Generate key handler
  ipcMain.handle('generate-key', async (event, { keyName, keyType, outputDir }) => {
    const kwargs = {
      key_name: keyName,
      key_type: keyType,
      output_dir: outputDir
    };
    return runPythonCommand('generate_key', kwargs, event);
  });

  // Add key handler
  ipcMain.handle('add-key', async (event, keyPath) => {
    const kwargs = {
      key_path: keyPath
    };
    return runPythonCommand('add_key', kwargs, event);
  });

  // Remove key handler
  ipcMain.handle('remove-key', async (event, keyIdentifier) => {
    const kwargs = {
      key_identifier: keyIdentifier
    };
    return runPythonCommand('remove_key', kwargs, event);
  });

  // Sync remotes handler
  ipcMain.handle('sync-remotes', async (event) => {
    const kwargs = {};
    return runPythonCommand('sync_remotes', kwargs, event);
  });

  // Get remote sources handler
  ipcMain.handle('get-remote-sources', async (event) => {
    const kwargs = {};
    return runPythonCommand('get_remote_sources', kwargs, event);
  });

  // Add remote source handler
  ipcMain.handle('add-remote-source', async (event, { name, url }) => {
    const kwargs = {
      name: name,
      url: url
    };
    return runPythonCommand('add_remote_source', kwargs, event);
  });

  // Remove remote source handler
  ipcMain.handle('remove-remote-source', async (event, name) => {
    const kwargs = {
      name: name
    };
    return runPythonCommand('remove_remote_source', kwargs, event);
  });
};

const setupBundleIPCHandlers = () => {
  // Create bundle handler
  ipcMain.handle('create-bundle', async (event, bundleData) => {
    const kwargs = {
      plugin_dirs: bundleData.pluginDirs,
      output_path: bundleData.outputPath,
      bundle_name: bundleData.bundleName,
      bundle_version: bundleData.bundleVersion,
      bundle_author: bundleData.bundleAuthor,
      bundle_comment: bundleData.bundleComment,
    };

    const result = await runPythonCommand('create_bundle', kwargs, event);

    // The renderer expects a 'path' property on success
    if (result.success) {
      result.path = bundleData.outputPath;
    }

    return result;
  });

  // Sign bundle handler
  ipcMain.handle('sign-bundle', async (event, bundlePath) => {
    // Prompt for private key
    const result = await dialog.showOpenDialog({
      properties: ['openFile'],
      title: 'Select Private Key',
      filters: [{ name: 'PEM Private Key', extensions: ['pem'] }],
    });

    if (result.canceled || !result.filePaths || result.filePaths.length === 0) {
      return { success: false, error: 'Private key selection was canceled.' };
    }

    const privateKeyPath = result.filePaths[0];

    const kwargs = {
      bundle_path: bundlePath,
      private_key: privateKeyPath,
    };

    return runPythonCommand('sign_bundle', kwargs, event);
  });

  // Validate bundle handler
  ipcMain.handle('validate-bundle', async (event, bundlePath) => {
    const kwargs = {
      bundle_path: bundlePath
    };
    return runPythonCommand('validate_bundle', kwargs, event);
  });

  // Clear bundle handler
  ipcMain.handle('clear-bundle', async (event, bundlePath) => {
    const kwargs = { bundle_path: bundlePath };
    return runPythonCommand('clear_bundle', kwargs, event);
  });

  // Get fillable targets handler
  ipcMain.handle('get-fillable-targets', async (event, bundlePath) => {
    const kwargs = { bundle_path: bundlePath };
    return runPythonCommand('get_fillable_targets', kwargs, event);
  });

  // Fill bundle handler
  ipcMain.handle('fill-bundle', async (event, { bundlePath, targetsToBuild }) => {
    const kwargs = {
      bundle_path: bundlePath,
      targets_to_build: targetsToBuild
    };
    
    // Pass event to stream progress
    return runPythonCommand('fill_bundle', kwargs, event);
  });

  // Edit bundle metadata handler
  ipcMain.handle('edit-bundle', async (event, { bundlePath, updatedManifest }) => {
    const kwargs = {
      bundle_path: bundlePath,
      metadata: updatedManifest
    };
    return runPythonCommand('edit_bundle_metadata', kwargs, event);
  });

  // Open bundle handler
  ipcMain.handle('open-bundle', async (event, bundlePath) => {
    console.log(`[IPC_HANDLER] Opening bundle: ${bundlePath}`);
    const kwargs = { bundle_path: bundlePath };
    const result = await runPythonCommand('inspect_bundle', kwargs, event);
    
    console.log(`[IPC_HANDLER] inspect_bundle result:`, result);

    // Core functions now return consistent JSON structure directly
    if (result && result.success) {
      // The core inspect_bundle function returns the data directly
      // We just need to add the bundlePath for the renderer
      return {
        success: true,
        manifest: result.manifest,
        report: result,  // The entire result is the report
        bundlePath: bundlePath
      };
    }
    
    // Return error as-is since it's already in the correct format
    return result || { success: false, error: 'An unknown error occurred while opening the bundle.' };
  });

  // File copying handler
  ipcMain.handle('copy-file', async (event, { source, destination }) => {
    try {
      const fs = require('fs-extra');
      await fs.copy(source, destination);
      return { success: true };
    } catch (error) {
      return { success: false, error: error.message };
    }
  });

  // Read license file handler
  ipcMain.handle('read-license', async () => {
    try {
      const licensePath = path.join(__dirname, '..', 'LICENSE.txt');
      console.log(`[IPC_HANDLER] Reading license from: ${licensePath}`);
      
      // Check if file exists
      const exists = await fs.pathExists(licensePath);
      console.log(`[IPC_HANDLER] License file exists: ${exists}`);
      
      if (!exists) {
        return { 
          success: false, 
          error: 'License file not found',
          content: `License file not found at: ${licensePath}`
        };
      }
      
      const licenseContent = await fs.readFile(licensePath, 'utf8');
      console.log(`[IPC_HANDLER] License content length: ${licenseContent.length} characters`);
      console.log(`[IPC_HANDLER] License starts with: "${licenseContent.substring(0, 100)}..."`);
      console.log(`[IPC_HANDLER] License ends with: "...${licenseContent.substring(licenseContent.length - 100)}"`);
      
      return { success: true, content: licenseContent };
    } catch (error) {
      console.error('Failed to read LICENSE.txt:', error);
      return { 
        success: false, 
        error: 'Could not load license file',
        content: 'GPL v3 license text could not be loaded. Please check that LICENSE.txt exists in the application directory.'
      };
    }
  });

  // Open external URL handler
  ipcMain.handle('open-external-url', async (event, url) => {
    try {
      console.log(`[IPC_HANDLER] Opening external URL: ${url}`);
      await shell.openExternal(url);
      return { success: true };
    } catch (error) {
      console.error('Failed to open external URL:', error);
      return { success: false, error: error.message };
    }
  });


};

const setupPluginIPCHandlers = () => {
  // Parse C++ interface handler
  ipcMain.handle('parse-cpp-interface', async (event, { headerContent, fileName }) => {
    try {
      // Write header content to a temporary file since parse_cpp_interface expects a file path
      const os = require('os');
      const tempDir = os.tmpdir();
      const tempFilePath = path.join(tempDir, fileName || 'temp_interface.h');
      
      await fs.writeFile(tempFilePath, headerContent);
      
      const kwargs = {
        header_path: tempFilePath
      };
      
      const result = await runPythonCommand('parse_cpp_interface', kwargs, event);
      
      // Clean up temporary file
      try {
        await fs.unlink(tempFilePath);
      } catch (cleanupError) {
        console.warn('[IPC_HANDLER] Failed to clean up temp file:', cleanupError);
      }
      
      return result;
    } catch (error) {
      console.error('[IPC_HANDLER] Error in parse-cpp-interface:', error);
      return { success: false, error: error.message };
    }
  });

  // Generate plugin project handler
  ipcMain.handle('generate-plugin-project', async (event, projectConfig) => {
    // The function expects a single 'config' parameter containing all the configuration
    // Note: directory and header_path need to be converted to Path objects in Python
    const kwargs = {
      config: {
        project_name: projectConfig.project_name,
        chosen_interface: projectConfig.chosen_interface,
        interfaces: projectConfig.interfaces,
        directory: projectConfig.output_directory, // Will be converted to Path in Python
        version: projectConfig.version,
        libplugin_rev: projectConfig.libplugin_revision,
        header_path: projectConfig.header_path // Will be converted to Path in Python
      }
    };
    return runPythonCommand('generate_plugin_project', kwargs, event);
  });

  // Validate plugin project handler
  ipcMain.handle('validate-plugin-project', async (event, { plugin_directory }) => {
    const kwargs = {
      project_path: plugin_directory  // Function expects 'project_path', not 'plugin_directory'
    };
    return runPythonCommand('validate_plugin_project', kwargs, event);
  });



  // Extract plugin from bundle handler
  ipcMain.handle('extract-plugin-from-bundle', async (event, { plugin_name, bundle_path, output_directory }) => {
    const kwargs = {
      plugin_name: plugin_name,
      bundle_path: bundle_path,
      output_directory: output_directory
    };
    return runPythonCommand('extract_plugin_from_bundle', kwargs, event);
  });

  // Compare plugin sources handler
  ipcMain.handle('compare-plugin-sources', async (event, { plugin_name, bundle_a_path, bundle_b_path }) => {
    const kwargs = {
      plugin_name: plugin_name,
      bundle_a_path: bundle_a_path,
      bundle_b_path: bundle_b_path
    };
    return runPythonCommand('compare_plugin_sources', kwargs, event);
  });
};

module.exports = {
  setupBundleIPCHandlers,
  setupKeyIPCHandlers,
  setupPluginIPCHandlers
};