refactor: define provider names as constants across all providers

- Add providerName constant to all provider classes that use handleOpenAIError
- Replace hardcoded provider name strings with this.providerName
- Improves maintainability and consistency across providers
- Affected providers: OpenAI, HuggingFace, LM Studio, Ollama, OpenRouter, Requesty, xAI

Author: daniel-lxs

src/api/providers/huggingface.ts

@@ -14,6 +14,7 @@ export class HuggingFaceHandler extends BaseProvider implements SingleCompletion
 	private client: OpenAI
 	private options: ApiHandlerOptions
 	private modelCache: ModelRecord | null = null
+	private readonly providerName = "HuggingFace"
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -69,7 +70,7 @@ export class HuggingFaceHandler extends BaseProvider implements SingleCompletion
 		try {
 			stream = await this.client.chat.completions.create(params)
 		} catch (error) {
-			throw handleOpenAIError(error, "HuggingFace")
+			throw handleOpenAIError(error, this.providerName)
 		}
 
 		for await (const chunk of stream) {
@@ -103,7 +104,7 @@ export class HuggingFaceHandler extends BaseProvider implements SingleCompletion
 
 			return response.choices[0]?.message.content || ""
 		} catch (error) {
-			throw handleOpenAIError(error, "HuggingFace")
+			throw handleOpenAIError(error, this.providerName)
 		}
 	}
 

src/api/providers/lm-studio.ts

@@ -20,6 +20,7 @@ import { handleOpenAIError } from "./utils/openai-error-handler"
 export class LmStudioHandler extends BaseProvider implements SingleCompletionHandler {
 	protected options: ApiHandlerOptions
 	private client: OpenAI
+	private readonly providerName = "LM Studio"
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -96,7 +97,7 @@ export class LmStudioHandler extends BaseProvider implements SingleCompletionHan
 			try {
 				results = await this.client.chat.completions.create(params)
 			} catch (error) {
-				throw handleOpenAIError(error, "LM Studio")
+				throw handleOpenAIError(error, this.providerName)
 			}
 
 			const matcher = new XmlMatcher(
@@ -177,7 +178,7 @@ export class LmStudioHandler extends BaseProvider implements SingleCompletionHan
 			try {
 				response = await this.client.chat.completions.create(params)
 			} catch (error) {
-				throw handleOpenAIError(error, "LM Studio")
+				throw handleOpenAIError(error, this.providerName)
 			}
 			return response.choices[0]?.message.content || ""
 		} catch (error) {

src/api/providers/ollama.ts

@@ -21,6 +21,7 @@ type CompletionUsage = OpenAI.Chat.Completions.ChatCompletionChunk["usage"]
 export class OllamaHandler extends BaseProvider implements SingleCompletionHandler {
 	protected options: ApiHandlerOptions
 	private client: OpenAI
+	private readonly providerName = "Ollama"
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -65,7 +66,7 @@ export class OllamaHandler extends BaseProvider implements SingleCompletionHandl
 				stream_options: { include_usage: true },
 			})
 		} catch (error) {
-			throw handleOpenAIError(error, "Ollama")
+			throw handleOpenAIError(error, this.providerName)
 		}
 		const matcher = new XmlMatcher(
 			"think",
@@ -123,7 +124,7 @@ export class OllamaHandler extends BaseProvider implements SingleCompletionHandl
 					stream: false,
 				})
 			} catch (error) {
-				throw handleOpenAIError(error, "Ollama")
+				throw handleOpenAIError(error, this.providerName)
 			}
 			return response.choices[0]?.message.content || ""
 		} catch (error) {

src/api/providers/openrouter.ts

@@ -86,6 +86,7 @@ export class OpenRouterHandler extends BaseProvider implements SingleCompletionH
 	private client: OpenAI
 	protected models: ModelRecord = {}
 	protected endpoints: ModelRecord = {}
+	private readonly providerName = "OpenRouter"
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -166,7 +167,7 @@ export class OpenRouterHandler extends BaseProvider implements SingleCompletionH
 		try {
 			stream = await this.client.chat.completions.create(completionParams)
 		} catch (error) {
-			throw handleOpenAIError(error, "OpenRouter")
+			throw handleOpenAIError(error, this.providerName)
 		}
 
 		let lastUsage: CompletionUsage | undefined = undefined
@@ -269,7 +270,7 @@ export class OpenRouterHandler extends BaseProvider implements SingleCompletionH
 		try {
 			response = await this.client.chat.completions.create(completionParams)
 		} catch (error) {
-			throw handleOpenAIError(error, "OpenRouter")
+			throw handleOpenAIError(error, this.providerName)
 		}
 
 		if ("error" in response) {

src/api/providers/requesty.ts

@@ -43,6 +43,7 @@ export class RequestyHandler extends BaseProvider implements SingleCompletionHan
 	protected models: ModelRecord = {}
 	private client: OpenAI
 	private baseURL: string
+	private readonly providerName = "Requesty"
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -133,7 +134,7 @@ export class RequestyHandler extends BaseProvider implements SingleCompletionHan
 		try {
 			stream = await this.client.chat.completions.create(completionParams)
 		} catch (error) {
-			throw handleOpenAIError(error, "Requesty")
+			throw handleOpenAIError(error, this.providerName)
 		}
 		let lastUsage: any = undefined
 
@@ -174,7 +175,7 @@ export class RequestyHandler extends BaseProvider implements SingleCompletionHan
 		try {
 			response = await this.client.chat.completions.create(completionParams)
 		} catch (error) {
-			throw handleOpenAIError(error, "Requesty")
+			throw handleOpenAIError(error, this.providerName)
 		}
 		return response.choices[0]?.message.content || ""
 	}

src/api/providers/xai.ts

@@ -19,6 +19,7 @@ const XAI_DEFAULT_TEMPERATURE = 0
 export class XAIHandler extends BaseProvider implements SingleCompletionHandler {
 	protected options: ApiHandlerOptions
 	private client: OpenAI
+	private readonly providerName = "xAI"
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -64,7 +65,7 @@ export class XAIHandler extends BaseProvider implements SingleCompletionHandler
 				...(reasoning && reasoning),
 			})
 		} catch (error) {
-			throw handleOpenAIError(error, "xAI")
+			throw handleOpenAIError(error, this.providerName)
 		}
 
 		for await (const chunk of stream) {
@@ -120,7 +121,7 @@ export class XAIHandler extends BaseProvider implements SingleCompletionHandler
 
 			return response.choices[0]?.message.content || ""
 		} catch (error) {
-			throw handleOpenAIError(error, "xAI")
+			throw handleOpenAIError(error, this.providerName)
 		}
 	}
 }