Finalizing #9

- Added service handler for system services
- Control OP25 from service handler
- Generate and save OP25 config file
- Handlers for OP25

client/op25Handler/op25Handler.mjs

@@ -1,14 +1,84 @@
+import { P25ConfigGenerator, NBFMConfigGenerator } from './modules/op25ConfigGenerators.mjs';
+import { getAllPresets } from '../modules/radioPresetHandler.mjs';
+import { startService, stopService } from '../modules/serviceHandler.mjs';
+
+import dotenv from 'dotenv';
+dotenv.config()
+
 let currentSystem = undefined;
 
+/**
+ * Creates configuration based on the preset and restarts the OP25 service.
+ * @param {Object} preset The preset object containing system configuration.
+ * @returns {Promise<void>}
+ */
+const createConfigAndRestartService = async (systemName, preset) => {
+    const { mode, frequencies, trunkFile, whitelistFile } = preset;
 
+    let generator;
+    if (mode === 'p25') {
+        console.log("Using P25 Config Generator based on preset mode", systemName, mode);
+        generator = new P25ConfigGenerator({
+            systemName,
+            controlChannels: frequencies,
+            tagsFile: trunkFile,
+            whitelistFile: whitelistFile !== 'none' ? whitelistFile : undefined
+        });
+    } else if (mode === 'nbfm') {
+        console.log("Using NBFM Config Generator based on preset mode", systemName, mode);
+        generator = new NBFMConfigGenerator({
+            systemName,
+            frequencies,
+            tagsFile: trunkFile
+        });
+    } else {
+        throw new Error(`Unsupported mode: ${mode}`);
+    }
+
+    const op25FilePath = process.env.OP25_FULL_PATH || './'; // Default to current directory if OP25_FULL_PATH is not set
+    const op25ConfigPath = `${op25FilePath}${op25FilePath.endsWith('/') ? 'active.cfg.json' : '/active.cfg.json'}`;
+    await generator.exportToFile(op25ConfigPath);
+
+    // Restart the service
+    await stopService('op25');
+    await startService('op25');
+};
+
+/**
+ * Opens the OP25 service for the specified system.
+ * @param {string} systemName The name of the system to open.
+ * @returns {Promise<void>}
+ */
 export const openOP25 = async (systemName) => {
     currentSystem = systemName;
-}
 
+    // Retrieve preset for the specified system name
+    const presets = await getAllPresets();
+    const preset = presets[systemName];
+
+    console.log("Found preset:", preset);
+
+    if (!preset) {
+        throw new Error(`Preset for system "${systemName}" not found.`);
+    }
+
+    await createConfigAndRestartService(systemName, preset);
+};
+
+
+/**
+ * Closes the OP25 service.
+ * @returns {Promise<void>}
+ */
 export const closeOP25 = async () => {
     currentSystem = undefined;
-}
+    await stopService('op25');
+};
 
+/**
+ * Gets the current system.
+ * @returns {Promise<string | undefined>} The name of the current system.
+ */
 export const getCurrentSystem = async () => {
     return currentSystem;
-}
+};