modify config functions

src/utils/configuration.ts

@@ -4,17 +4,23 @@ import { dataDir } from '@tauri-apps/api/path'
 let configFilePath: string
 
 export async function setConfigOption(key: string, value: any): Promise<void> {
-  return
+  const config = await getConfig()
+
+  config[key] = value
+
+  await saveConfig(config)
 }
 
 export async function getConfigOption(key: string): Promise<any> {
   const config = await getConfig()
+
+  return config[key] || null
 }
 
 export async function getConfig() {
   const raw = await readConfigFile()
   let parsed
-
+  
   try {
     parsed = JSON.parse(raw)
   } catch(e) {
@@ -26,7 +32,9 @@ export async function getConfig() {
 }
 
 export async function saveConfig(obj: { [key: string]: any }) {
-  return
+  const raw = JSON.stringify(obj)
+
+  await writeConfigFile(raw)
 }
 
 async function readConfigFile() {
@@ -48,18 +56,21 @@ async function readConfigFile() {
   if (!dataFiles.find((fileOrDir) => fileOrDir?.name === 'configuration.json')) {
     // Create config file
     const file: fs.FsTextFileOption = {
-      path: local + 'cultivation\\configuration.json',
+      path: configFilePath,
       contents: '{}'
     }
 
     await fs.writeFile(file)
   }
 
-  // Finally read the file
-  
-  return await fs.readTextFile(local + 'cultivation\\configuration.json')
+  // Finally read the file 
+  return await fs.readTextFile(configFilePath)
 }
 
-async function writeConfigFile() {
-  return
+async function writeConfigFile(raw: string) {
+  // All external config functions call readConfigFile, which ensure files exists
+  await fs.writeFile({
+    path: configFilePath,
+    contents: raw
+  })
 }