genrules/index.js

import fs, { readFileSync } from "fs"

const outbounds = fs
    .readFileSync("proxies.txt")
    .toString()
    .split("\n")
    .filter(line => !!line)
    .map((line, i) => {
        const [host, port, username, password] = line.split(":")
        return {
            tag: `us-${i + 1}`,
            protocol: "http",
            settings: {
                servers: [
                    {
                        address: host,
                        port: parseInt(port),
                        users: [
                            {
                                user: username,
                                pass: password
                            }
                        ]
                    }
                ]
            }
        }
    })
fs.writeFileSync("outbounds.json", JSON.stringify(outbounds, null, 2))

const routingRules = outbounds.map((p, i) => {
    return {
        type: "field",
        user: [`rcs_${i + 1}`],
        outboundTag: p.tag
    }
})

fs.writeFileSync("routingRules.json", JSON.stringify(routingRules, null, 2))

const xray = JSON.parse(fs.readFileSync("xray.json").toString())
xray.outbounds = xray.outbounds.concat(outbounds)
xray.routing.rules = xray.routing.rules.concat(routingRules)

fs.writeFileSync("xray_edited.json", JSON.stringify(xray, null, 2))