chore: Add fs abstraction for checkFileExists

core/src/fs.ts

@@ -5,52 +5,52 @@
  * @returns {Promise<any>} A Promise that resolves when the file is written successfully.
  */
 const writeFile: (path: string, data: string) => Promise<any> = (path, data) =>
-  global.core.api?.writeFile(path, data);
+  global.core.api?.writeFile(path, data)
 
 /**
  * Checks whether the path is a directory.
  * @param path - The path to check.
  * @returns {boolean} A boolean indicating whether the path is a directory.
  */
-const isDirectory = (path: string): Promise<boolean> =>
-  global.core.api?.isDirectory(path);
+const isDirectory = (path: string): Promise<boolean> => global.core.api?.isDirectory(path)
 
 /**
  * Reads the contents of a file at the specified path.
  * @param {string} path - The path of the file to read.
  * @returns {Promise<any>} A Promise that resolves with the contents of the file.
  */
-const readFile: (path: string) => Promise<any> = (path) =>
-  global.core.api?.readFile(path);
+const readFile: (path: string) => Promise<any> = (path) => global.core.api?.readFile(path)
+/**
+ * Check whether the file exists
+ * @param {string} path
+ * @returns {boolean} A boolean indicating whether the path is a file.
+ */
+const checkFileExists = (path: string): Promise<boolean> => global.core.api?.checkFileExists(path)
 /**
  * List the directory files
  * @param {string} path - The path of the directory to list files.
  * @returns {Promise<any>} A Promise that resolves with the contents of the directory.
  */
-const listFiles: (path: string) => Promise<any> = (path) =>
-  global.core.api?.listFiles(path);
+const listFiles: (path: string) => Promise<any> = (path) => global.core.api?.listFiles(path)
 /**
  * Creates a directory at the specified path.
  * @param {string} path - The path of the directory to create.
  * @returns {Promise<any>} A Promise that resolves when the directory is created successfully.
  */
-const mkdir: (path: string) => Promise<any> = (path) =>
-  global.core.api?.mkdir(path);
+const mkdir: (path: string) => Promise<any> = (path) => global.core.api?.mkdir(path)
 
 /**
  * Removes a directory at the specified path.
  * @param {string} path - The path of the directory to remove.
  * @returns {Promise<any>} A Promise that resolves when the directory is removed successfully.
  */
-const rmdir: (path: string) => Promise<any> = (path) =>
-  global.core.api?.rmdir(path);
+const rmdir: (path: string) => Promise<any> = (path) => global.core.api?.rmdir(path)
 /**
  * Deletes a file from the local file system.
  * @param {string} path - The path of the file to delete.
  * @returns {Promise<any>} A Promise that resolves when the file is deleted.
  */
-const deleteFile: (path: string) => Promise<any> = (path) =>
-  global.core.api?.deleteFile(path);
+const deleteFile: (path: string) => Promise<any> = (path) => global.core.api?.deleteFile(path)
 
 /**
  * Appends data to a file at the specified path.
@@ -58,10 +58,10 @@ const deleteFile: (path: string) => Promise<any> = (path) =>
  * @param data data to append
  */
 const appendFile: (path: string, data: string) => Promise<any> = (path, data) =>
-  global.core.api?.appendFile(path, data);
+  global.core.api?.appendFile(path, data)
 
 const copyFile: (src: string, dest: string) => Promise<any> = (src, dest) =>
-  global.core.api?.copyFile(src, dest);
+  global.core.api?.copyFile(src, dest)
 
 /**
  * Reads a file line by line.
@@ -69,12 +69,13 @@ const copyFile: (src: string, dest: string) => Promise<any> = (src, dest) =>
  * @returns {Promise<any>} A promise that resolves to the lines of the file.
  */
 const readLineByLine: (path: string) => Promise<any> = (path) =>
-  global.core.api?.readLineByLine(path);
+  global.core.api?.readLineByLine(path)
 
 export const fs = {
   isDirectory,
   writeFile,
   readFile,
+  checkFileExists,
   listFiles,
   mkdir,
   rmdir,
@@ -82,4 +83,4 @@ export const fs = {
   appendFile,
   readLineByLine,
   copyFile,
-};
+}

electron/handlers/fs.ts

@@ -50,6 +50,19 @@ export function handleFsIPCs() {
     })
   })
 
+  /**
+   * Checks whether a file exists in the user data directory.
+   * @param event - The event object.
+   * @param path - The path of the file to check.
+   * @returns A promise that resolves with a boolean indicating whether the file exists.
+   */
+  ipcMain.handle('checkFileExists', async (_event, path: string) => {
+    return new Promise((resolve, reject) => {
+      const fullPath = join(userSpacePath, path)
+      fs.existsSync(fullPath) ? resolve(true) : resolve(false)
+    })
+  })
+
   /**
    * Writes data to a file in the user data directory.
    * @param event - The event object.

electron/invokers/fs.ts

@@ -27,6 +27,12 @@ export function fsInvokers() {
      */
     readFile: (path: string) => ipcRenderer.invoke('readFile', path),
 
+    /**
+     * Reads a file at the specified path.
+     * @param {string} path - The path of the file to read.
+     */
+    checkFileExists: (path: string) => ipcRenderer.invoke('checkFileExists', path),
+    
     /**
      * Writes data to a file at the specified path.
      * @param {string} path - The path of the file to write to.