drinktracker/src/lib/ai/openai-provider.ts

import OpenAI from "openai"
import { BaseAIProvider } from "./base-provider"

export class OpenAIProvider extends BaseAIProvider {
  name = "openai"
  private client: OpenAI

  constructor(apiKey: string) {
    super()
    this.client = new OpenAI({ apiKey })
  }

  async sendVisionRequest(
    systemPrompt: string,
    imageBase64: string,
    mimeType: string
  ): Promise<string> {
    const dataUrl = `data:${mimeType};base64,${imageBase64}`

    const response = await this.client.chat.completions.create({
      model: "gpt-4o",
      max_tokens: 4096,
      messages: [
        {
          role: "system",
          content: systemPrompt,
        },
        {
          role: "user",
          content: [
            {
              type: "image_url",
              image_url: {
                url: dataUrl,
                detail: "high",
              },
            },
            {
              type: "text",
              text: "Please analyze this image and extract the information as instructed.",
            },
          ],
        },
      ],
    })

    const message = response.choices[0]?.message?.content
    if (!message) {
      throw new Error("No response received from OpenAI")
    }

    return message
  }

  async sendTextRequest(
    systemPrompt: string,
    userMessage: string
  ): Promise<string> {
    const response = await this.client.chat.completions.create({
      model: "gpt-4o",
      max_tokens: 4096,
      messages: [
        {
          role: "system",
          content: systemPrompt,
        },
        {
          role: "user",
          content: userMessage,
        },
      ],
    })

    const message = response.choices[0]?.message?.content
    if (!message) {
      throw new Error("No response received from OpenAI")
    }

    return message
  }
}