fix: better errors

server/src/errors/CatAIError.ts

@@ -0,0 +1,3 @@
+export class CatAIError extends Error {
+
+}

server/src/index.ts

@@ -3,10 +3,12 @@ import FetchModels from './manage-models/about-models/fetch-models.js';
 import createChat, {getModelPath} from './manage-models/bind-class/bind-class.js';
 import CatAIDB from './storage/app-db.js';
 import ENV_CONFIG from './storage/config.js';
+import {CatAIError} from './errors/CatAIError.js';
 
 const downloadModel = FetchModels.simpleDownload;
 
 export {
+    CatAIError,
     RemoteCatAI,
     FetchModels,
     createChat,

server/src/manage-models/bind-class/bind-class.ts

@@ -1,19 +1,28 @@
 import BaseBindClass, {CreateChatOptions} from './binds/base-bind-class.js';
 import AppDb, {ModelSettings} from '../../storage/app-db.js';
 import NodeLlamaCppV2 from './binds/node-llama-cpp/node-llama-cpp-v2/node-llama-cpp-v2.js';
-import {withLock} from "lifecycle-utils";
+import {withLock} from 'lifecycle-utils';
+import {ModelNotInstalledError} from './errors/ModelNotInstalledError.js';
+import {NoActiveModelError} from './errors/NoActiveModelError.js';
+import {NoModelBindError} from './errors/NoModelBindError.js';
+import {BindNotFoundError} from './errors/BindNotFoundError.js';
 
 export const ALL_BINDS = [NodeLlamaCppV2];
 const cachedBinds: { [key: string]: InstanceType<typeof BaseBindClass> } = {};
 
 export function findLocalModel(modelName?: string) {
     const modelDetails = AppDb.db.models[modelName || AppDb.db.activeModel!];
 
-    if (!modelDetails)
-        throw new Error('No active model');
+    if (!modelDetails) {
+        if (modelName) {
+            throw new ModelNotInstalledError(`Model ${modelName} not installed`);
+        }
+        throw new NoActiveModelError('No active model');
+    }
+
 
     if (!modelDetails.settings.bind)
-        throw new Error('No bind class');
+        throw new NoModelBindError('No bind class');
 
     return modelDetails;
 }
@@ -40,7 +49,7 @@ export default async function createChat(options?: CreateChatOptions) {
 
         const bindClass = ALL_BINDS.find(x => x.shortName === bind);
         if (!bindClass)
-            throw new Error(`Bind class "${bind}" not found. Try to update the model/CatAI`);
+            throw new BindNotFoundError(`Bind class "${bind}" not found. Try to update the model/CatAI`);
 
         const bindClassInstance = cachedBinds[bind] ??= new bindClass(modelDetails);
         await bindClassInstance.initialize();
@@ -50,4 +59,4 @@ export default async function createChat(options?: CreateChatOptions) {
 
 export function getModelPath(name: string) {
     return findLocalModel(name).downloadedFiles?.model;
-}
+}

server/src/manage-models/bind-class/errors/BindNotFoundError.ts

@@ -0,0 +1,5 @@
+import {CatAIError} from '../../../errors/CatAIError.js';
+
+export class BindNotFoundError extends CatAIError {
+
+}

server/src/manage-models/bind-class/errors/ModelNotInstalledError.ts

@@ -0,0 +1,4 @@
+import {CatAIError} from '../../../errors/CatAIError.js';
+
+export class ModelNotInstalledError extends CatAIError {
+}

server/src/manage-models/bind-class/errors/NoActiveModelError.ts

@@ -0,0 +1,5 @@
+import {CatAIError} from '../../../errors/CatAIError.js';
+
+export class NoActiveModelError extends CatAIError {
+
+}

server/src/manage-models/bind-class/errors/NoModelBindError.ts

@@ -0,0 +1,5 @@
+import {CatAIError} from '../../../errors/CatAIError.js';
+
+export class NoModelBindError extends CatAIError {
+
+}