三分钟上线你自己的Midjourney

news2024/10/6 6:51:19

文章尾部有demo
江湖惯例：先来一波感谢，感谢laf，让我们可以不使用魔法、免费接入Midjourney，不了解laf的请猛戳 Laf介绍

背景

laf官方最近发布了一个活动，活动链接，新手也可以接入哦！废话不多说，赶紧点击链接报名吧。

接入准备

在laf.dev（注意一定要用laf.dev，不要使用laf.run）注册账号，新用户可以免费一个月体验，老用户略过

开始开发

先在左下角NPM依赖添加依赖
新建一个云函数，随便取个名字，然后贴入以下代码

import cloud from '@lafjs/cloud'
import { Midjourney, MidjourneyMessage } from 'midjourney'
const SERVER_ID = '' // Midjourney 服务 ID
const CHANNEL_ID = '' // Midjourney 频道 ID
const SALAI_TOKEN = '' // Midjourney 服务 Token

const Limit = 100
const MaxWait = 3

const client = new Midjourney({
  ServerId: SERVER_ID,
  ChannelId: CHANNEL_ID,
  SalaiToken: SALAI_TOKEN,
  Debug: true,
  SessionId: SALAI_TOKEN,
  Limit: Limit,
  MaxWait: MaxWait
});

export default async function (ctx: FunctionContext) {
  const { type, param } = ctx.body
  switch (type) {
    case 'RetrieveMessages':
      return await RetrieveMessages(param)
    case 'imagine':
      return await imagine(param)
    case 'upscale':
      return await upscale(param)
    case 'variation':
      return await variation(param)
  }

}

// 查询最近消息
async function RetrieveMessages(param) {
  console.log("RetrieveMessages")
  const client = new MidjourneyMessage({
    ChannelId: CHANNEL_ID,
    SalaiToken: SALAI_TOKEN,
  });
  const msg = await client.RetrieveMessages();
  console.log("RetrieveMessages success ", msg)
  return msg
}

// 创建生图任务
async function imagine(param) {
  console.log("imagine", param)
  const { question, msg_Id } = param
  const msg = await client.Imagine(
    `[${msg_Id}] ${question}`,
    (uri: string, progress: string) => {
      console.log("loading", uri, "progress", progress);
    }
  );
  console.log("imagine success ", msg)
  return true
}

// upscale 放大图片
async function upscale(param) {
  console.log("upscale", param)
  const { question, index, id, url } = param
  const hash = url.split("_").pop()?.split(".")[0] ?? ""
  console.log(hash)
  const msg = await client.Upscale(
    question,
    index,
    id,
    hash,
    (uri: string, progress: string) => {
      console.log("loading", uri, "progress", progress);
    }
  );
  console.log("upscale success ", msg)
  return msg
}

// variation 变换图片
async function variation(param) {
  console.log("variation", param)
  const client = new Midjourney({
    ServerId: SERVER_ID,
    ChannelId: CHANNEL_ID,
    SalaiToken: SALAI_TOKEN,
    Debug: true,
    SessionId: SALAI_TOKEN,
    Limit: Limit,
    MaxWait: 100
  });
  const { question, index, id, url } = param
  const hash = url.split("_").pop()?.split(".")[0] ?? ""
  const msg = await client.Variation(
    question,
    index,
    id,
    hash,
    (uri: string, progress: string) => {
      console.log("loading", uri, "progress", progress);
    }
  );
  console.log("variation success ", msg)
  return msg
}