chore: use gpt-4o-mini for title generation by default

feat: support more customizable parameters

src/pages/api/title-gen.ts

@@ -18,6 +18,8 @@ You should respond in valid JSON format, with a single string field \`title\`.
 The title should be in Chinese if you think the user is Chinese.
 `.trim()
 
+const model = import.meta.env.TITLE_GEN_MODEL ?? import.meta.env.OPENAI_API_MODEL ?? 'gpt-4o-mini'
+
 export const POST: APIRoute = async(context) => {
   const content = await context.request.text()
 
@@ -27,7 +29,7 @@ export const POST: APIRoute = async(context) => {
         { role: 'system', content: systemPrompt },
         { role: 'user', content: `"""\n${content}\n"""` },
       ],
-      model: 'gpt-3.5-turbo-0125',
+      model,
       temperature: 0,
       response_format: { type: 'json_object' },
       stream: true,

src/utils/client.ts

@@ -1,3 +1,3 @@
 import { OpenAI } from 'openai'
 import { openaiBaseUrl } from './constants'
-export const openai = new OpenAI({ apiKey: import.meta.env.OPENAI_API_KEY ?? '', baseURL: `${openaiBaseUrl}/v1`, timeout: 10000, maxRetries: 5 })
+export const openai = new OpenAI({ apiKey: import.meta.env.OPENAI_API_KEY ?? '', baseURL: openaiBaseUrl, timeout: 10000, maxRetries: 5 })

src/utils/constants.ts

@@ -1,2 +1,2 @@
-export const openaiBaseUrl = (import.meta.env.OPENAI_API_BASE_URL || 'https://api.openai.com').trim().replace(/\/$/, '')
+export const openaiBaseUrl = (import.meta.env.OPENAI_BASE_URL ?? `${(import.meta.env.OPENAI_API_BASE_URL ?? 'https://api.openai.com').trim().replace(/\/$/, '')}/v1`).trim().replace(/\/$/, '')
 export const promplateBaseUrl = import.meta.env.PUBLIC_PROMPLATE_DEMO_BASE_URL.replace(/\/$/, '')