├── .gitignore ├── src ├── middlewares.ts ├── chatgpt.ts └── index.ts ├── package.json ├── README.md └── tsconfig.json /.gitignore: -------------------------------------------------------------------------------- 1 | dist/ 2 | node_modules/ 3 | .env 4 | -------------------------------------------------------------------------------- /src/middlewares.ts: -------------------------------------------------------------------------------- 1 | import { ErrorRequestHandler } from 'express'; 2 | 3 | export const errorHandler: ErrorRequestHandler = (error, req, res, next) => { 4 | const status = error.status || 500; 5 | const message = error.message || 'Something went wrong'; 6 | res.status(status).send({ error: message }); 7 | }; 8 | -------------------------------------------------------------------------------- /src/chatgpt.ts: -------------------------------------------------------------------------------- 1 | import { ChatGPTAPI } from 'chatgpt'; 2 | 3 | export { ChatGPTAPI }; 4 | 5 | export async function getChatGPTAPI(): Promise { 6 | const apiKey = process.env.OPENAI_API_KEY; 7 | 8 | if (!apiKey) { 9 | throw new Error('Missing OpenAI API key. Please provide OPENAI_API_KEY as an env variable.'); 10 | } 11 | 12 | const api = new ChatGPTAPI({ apiKey }); 13 | 14 | return api; 15 | } 16 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "chatgpt-server", 3 | "version": "1.0.0", 4 | "description": "", 5 | "main": "dist/index.js", 6 | "type": "module", 7 | "scripts": { 8 | "build": "npx tsc", 9 | "start": "node dist/index.js", 10 | "dev": "concurrently \"npx tsc --watch\" \"nodemon -q dist/index.js\"" 11 | }, 12 | "keywords": [], 13 | "author": "", 14 | "license": "ISC", 15 | "dependencies": { 16 | "chatgpt": "^5.0.8", 17 | "cors": "^2.8.5", 18 | "dotenv": "^16.0.3", 19 | "express": "^4.18.2", 20 | "puppeteer": "^19.4.1" 21 | }, 22 | "devDependencies": { 23 | "@tsconfig/node18": "^1.0.1", 24 | "@types/cors": "^2.8.13", 25 | "@types/express": "^4.17.15", 26 | "@types/node": "^18.11.18", 27 | "concurrently": "^7.6.0", 28 | "nodemon": "^2.0.20", 29 | "typescript": "^4.9.4" 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # API server for ChatGPT 2 | 3 | Backend server for **ChatGPT With Voice**, now using the ✨ official ChatGPT APIs ✨. You can check out [the website](https://chatgpt.sonng.dev/), or find the [frontend repo](https://github.com/sonngdev/chatgpt-voice) on GitHub. 4 | 5 | ## Installation 6 | Clone this repo. 7 | 8 | ```bash 9 | git clone https://github.com/sonngdev/chatgpt-server.git 10 | ``` 11 | 12 | Prepare environment variables by creating `.env` at the project root. You need to sign up for an [OpenAI API Key](https://platform.openai.com/overview). 13 | 14 | ```t 15 | PORT=8000 # Or whichever port available 16 | OPENAI_API_KEY="" 17 | ``` 18 | 19 | Start the server and you are done! Remember to use Node 18 or higher, this is the requirement of this package's core dependency – [`chatgpt`](https://github.com/transitive-bullshit/chatgpt-api). 20 | 21 | ```bash 22 | npm install 23 | 24 | # Run locally, or... 25 | npm run dev 26 | 27 | # Run on production 28 | npm run build 29 | npm run start 30 | ``` 31 | 32 | ## Contribution 33 | Thank you [Travis Fischer](https://github.com/transitive-bullshit) for your [`chatgpt`](https://github.com/transitive-bullshit/chatgpt-api) package. 34 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | import express, { Request } from 'express'; 2 | import dotenv from 'dotenv'; 3 | import cors from 'cors'; 4 | import { errorHandler } from './middlewares.js'; 5 | import { getChatGPTAPI } from './chatgpt.js'; 6 | 7 | interface CreateChatGPTMessageRequestBody { 8 | text: string; 9 | parentMessageId?: string; 10 | } 11 | 12 | interface CreateChatGPTMessageResponse { 13 | answer: string; 14 | messageId: string; 15 | } 16 | 17 | dotenv.config(); 18 | 19 | const app = express(); 20 | const port = process.env.PORT || 8000; 21 | const api = await getChatGPTAPI(); 22 | 23 | app.use(cors()); 24 | app.use(express.json()); 25 | app.use(errorHandler); 26 | 27 | app.get('/', (req, res) => { 28 | res.send('ChatGPT server is running OK'); 29 | }); 30 | 31 | app.post( 32 | '/chatgpt/messages', 33 | async ( 34 | req: Request< 35 | {}, 36 | CreateChatGPTMessageResponse, 37 | CreateChatGPTMessageRequestBody 38 | >, 39 | res, 40 | next, 41 | ) => { 42 | const { text, parentMessageId } = req.body; 43 | 44 | try { 45 | const response = await api.sendMessage(text, { 46 | parentMessageId, 47 | }); 48 | res.json({ 49 | answer: response.text, 50 | messageId: response.id, 51 | }); 52 | } catch (error: unknown) { 53 | if (error instanceof Error) { 54 | return next(error); 55 | } 56 | const errorMessage = typeof error === 'string' ? error : 'Something went wrong'; 57 | return next(new Error(errorMessage)); 58 | } 59 | }, 60 | ); 61 | 62 | app.listen(port, () => { 63 | console.log(`[server]: Server is running at http://localhost:${port}`); 64 | }); 65 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "@tsconfig/node18/tsconfig.json", 3 | "compilerOptions": { 4 | /* Visit https://aka.ms/tsconfig to read more about this file */ 5 | 6 | /* Projects */ 7 | // "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */ 8 | // "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */ 9 | // "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */ 10 | // "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */ 11 | // "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */ 12 | // "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */ 13 | 14 | /* Language and Environment */ 15 | "target": "ESNext", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */ 16 | // "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */ 17 | // "jsx": "preserve", /* Specify what JSX code is generated. */ 18 | // "experimentalDecorators": true, /* Enable experimental support for TC39 stage 2 draft decorators. */ 19 | // "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */ 20 | // "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */ 21 | // "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */ 22 | // "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */ 23 | // "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */ 24 | // "noLib": true, /* Disable including any library files, including the default lib.d.ts. */ 25 | // "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */ 26 | // "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */ 27 | 28 | /* Modules */ 29 | "module": "ESNext", /* Specify what module code is generated. */ 30 | // "rootDir": "./", /* Specify the root folder within your source files. */ 31 | "moduleResolution": "Node", /* Specify how TypeScript looks up a file from a given module specifier. */ 32 | // "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */ 33 | // "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */ 34 | // "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */ 35 | // "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */ 36 | // "types": [], /* Specify type package names to be included without being referenced in a source file. */ 37 | // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */ 38 | // "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */ 39 | "resolveJsonModule": true, /* Enable importing .json files. */ 40 | // "noResolve": true, /* Disallow 'import's, 'require's or ''s from expanding the number of files TypeScript should add to a project. */ 41 | 42 | /* JavaScript Support */ 43 | // "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */ 44 | // "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */ 45 | // "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */ 46 | 47 | /* Emit */ 48 | // "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */ 49 | // "declarationMap": true, /* Create sourcemaps for d.ts files. */ 50 | // "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */ 51 | "sourceMap": true, /* Create source map files for emitted JavaScript files. */ 52 | // "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */ 53 | "outDir": "dist", /* Specify an output folder for all emitted files. */ 54 | // "removeComments": true, /* Disable emitting comments. */ 55 | // "noEmit": true, /* Disable emitting files from a compilation. */ 56 | // "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */ 57 | // "importsNotUsedAsValues": "remove", /* Specify emit/checking behavior for imports that are only used for types. */ 58 | // "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */ 59 | // "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */ 60 | // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */ 61 | // "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */ 62 | // "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */ 63 | // "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */ 64 | // "newLine": "crlf", /* Set the newline character for emitting files. */ 65 | // "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */ 66 | // "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */ 67 | // "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */ 68 | // "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */ 69 | // "declarationDir": "./", /* Specify the output directory for generated declaration files. */ 70 | // "preserveValueImports": true, /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */ 71 | 72 | /* Interop Constraints */ 73 | // "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */ 74 | "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */ 75 | "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */ 76 | // "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */ 77 | "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */ 78 | 79 | /* Type Checking */ 80 | "strict": true, /* Enable all strict type-checking options. */ 81 | "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */ 82 | // "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */ 83 | // "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */ 84 | // "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */ 85 | // "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */ 86 | // "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */ 87 | // "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */ 88 | // "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */ 89 | // "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */ 90 | // "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */ 91 | // "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */ 92 | // "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */ 93 | // "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */ 94 | // "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */ 95 | // "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */ 96 | // "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */ 97 | // "allowUnusedLabels": true, /* Disable error reporting for unused labels. */ 98 | // "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */ 99 | 100 | /* Completeness */ 101 | // "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */ 102 | "skipLibCheck": true /* Skip type checking all .d.ts files. */ 103 | } 104 | } 105 | --------------------------------------------------------------------------------