diff --git a/package-lock.json b/package-lock.json index 0c71ea2..7c0d572 100644 --- a/package-lock.json +++ b/package-lock.json @@ -11,10 +11,11 @@ "dependencies": { "@supercharge/promise-pool": "^2.3.2", "big.js": "^6.1.1", + "bn-sqrt": "^1.0.0", "commander": "^12.0.0", "dotenv": "^16.3.1", "fs": "^0.0.1security", - "near-api-js": "3.0.4", + "near-api-js": "^3.0.4", "p-retry": "^6.2.0", "pg": "^8.11.3", "secp256k1": "^5.0.0", @@ -422,6 +423,14 @@ "resolved": "https://registry.npmjs.org/@types/node/-/node-11.11.6.tgz", "integrity": "sha512-Exw4yUWMBXM3X+8oqzJNRqZSwUAaS4+7NdvHqQuFi/d+synz++xmX3QIf+BFqneW8N31R8Ky+sikfZUXq07ggQ==" }, + "node_modules/bn-sqrt": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/bn-sqrt/-/bn-sqrt-1.0.0.tgz", + "integrity": "sha512-XdCMQ7tfEF/f7nrQgnrJ+DLQBwQzSQyPOKIXdUOTcGEvsRKBcIsdfORp7B5H8DWo8FOzZ4+a2TjSZzaqKgzicg==", + "dependencies": { + "bn.js": "^5.2.0" + } + }, "node_modules/bn.js": { "version": "5.2.1", "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz", diff --git a/package.json b/package.json index 0d960bf..920dbc2 100644 --- a/package.json +++ b/package.json @@ -15,10 +15,11 @@ "dependencies": { "@supercharge/promise-pool": "^2.3.2", "big.js": "^6.1.1", + "bn-sqrt": "^1.0.0", "commander": "^12.0.0", "dotenv": "^16.3.1", "fs": "^0.0.1security", - "near-api-js": "3.0.4", + "near-api-js": "^3.0.4", "p-retry": "^6.2.0", "pg": "^8.11.3", "secp256k1": "^5.0.0", diff --git a/snapshotter/server/README.md b/snapshotter/server/README.md new file mode 100644 index 0000000..cfb477d --- /dev/null +++ b/snapshotter/server/README.md @@ -0,0 +1,52 @@ +# Snapshot API + +This is a Node.js application that provides an API endpoint for retrieving paginated, sorted, and filtered snapshot data. + +## Installation + +1. Install the dependencies: + + ```bash + npm i + ``` + +2. Start the application: + + ```bash + npm start:local + ``` + +## API Endpoint + +The API endpoint is available at `/api/snapshot`. + +### Query Parameters + +The following query parameters can be used to customize the API response: + +- `page` (optional, default: 0): Page number of the paginated results. +- `limit` (optional, default: 100): Maximum number of items per page. +- `sortBy` (optional, default: "name"): Field to sort the results by. + - Possible values: "name", "stake", "active_months", "vote_power", "stake_power", "activity_power" +- `sortOrder` (optional, default: "asc"): Order in which the results should be sorted. + - Possible values: "asc" (ascending), "desc" (descending) +- `prefix` (optional, default: ""): Prefix to filter the `account_id` field by. + +### Example Requests + +- `/api/snapshot`: First page of data with default sorting and no filtering. +- `/api/snapshot?page=1&limit=50`: Second page of data with 50 items per page. +- `/api/snapshot?sortBy=stake&sortOrder=desc`: First page of data sorted by stake in descending order. +- `/api/snapshot?page=2&limit=20&sortBy=vote_power&sortOrder=asc`: Third page of data sorted by vote power in ascending order with 20 items per page. +- `/api/snapshot?prefix=00&sortBy=activity_power&sortOrder=desc`: First page of data filtered by `account_id` prefix "00" and sorted by activity power in descending order. + +### Error Handling + +If an invalid `sortBy` parameter is provided, the API will respond with a 400 status code and an error message indicating the invalid parameter. + +## Configuration + +The application can be configured using the following environment variables: + +- `SERVER_PORT` (default: 3000): The port on which the server will run. +- `SNAPSHOT_FILE` (default: 'snapshot.json'): The path to the snapshot JSON file. diff --git a/snapshotter/server/api/app.js b/snapshotter/server/api/app.js new file mode 100644 index 0000000..8c6c932 --- /dev/null +++ b/snapshotter/server/api/app.js @@ -0,0 +1,12 @@ +import express from "express"; +import cors from "cors"; +import { corsConfig } from "./config/cors.config.js"; +import { routes } from "./routes.js"; + +export const app = express(); + +app.use(express.urlencoded({ extended: true })); +app.use(express.json()); +app.use(cors(corsConfig)); + +app.use("/api", routes); diff --git a/snapshotter/server/api/config/cors.config.js b/snapshotter/server/api/config/cors.config.js new file mode 100644 index 0000000..5553da5 --- /dev/null +++ b/snapshotter/server/api/config/cors.config.js @@ -0,0 +1,9 @@ +export const corsConfig = { + origin: [ + "http://localhost:3000", + "https://near.org", + "https://near.social", + ], + methods: "GET,OPTION,HEAD", + optionsSuccessStatus: 200, +}; diff --git a/snapshotter/server/api/routes.js b/snapshotter/server/api/routes.js new file mode 100644 index 0000000..5e7b38b --- /dev/null +++ b/snapshotter/server/api/routes.js @@ -0,0 +1,8 @@ +import express from "express"; +import { GetSnapshot } from "./snapshot.js"; + +const routes = express.Router(); + +routes.get("/snapshot", GetSnapshot); + +export { routes }; diff --git a/snapshotter/server/api/snapshot.js b/snapshotter/server/api/snapshot.js new file mode 100644 index 0000000..51acaff --- /dev/null +++ b/snapshotter/server/api/snapshot.js @@ -0,0 +1,91 @@ +import { parseNearAmount } from "near-api-js/lib/utils/format.js"; +import { snapshot } from "../index.js"; +import { BN } from 'bn.js'; + +const NEAR_THRESHOLD = new BN(parseNearAmount('1000')); +const NEAR_TO_YOCTO = new BN(parseNearAmount('1')); + +const stakePower = (stakeStr) => { + const stake = new BN(stakeStr); + + let stake_power = stake.div(NEAR_TO_YOCTO).toNumber(); + + if (stake.gt(NEAR_THRESHOLD)) { + stake_power = 1000; + stake_power += Math.floor(Math.sqrt(stake.sub(NEAR_THRESHOLD).div(NEAR_TO_YOCTO).toNumber())); + } + return stake_power; + +} + +const activityPower = (activeMonths) => { + return activeMonths * 20; +} + +const userToVotePower = (user) => { + const activeMonthsPower = activityPower(user.active_months); + const stake_power = stakePower(user.stake); + + return activeMonthsPower + stake_power; +} + +export const GetSnapshot = (req, res) => { + const { page = 0, limit = 100, sortBy = "name", sortOrder = "asc", prefix = "" } = req.query; + + // Convert page and limit to numbers + const pageNumber = parseInt(page); + const limitNumber = parseInt(limit); + + let filteredSnapshot = snapshot; + if (prefix) { + filteredSnapshot = snapshot.filter((item) => item.account_id.startsWith(prefix)); + } + + // Sort the snapshot data based on the sortBy and sortOrder parameters + let sortedSnapshot = [...filteredSnapshot]; + switch (sortBy) { + case "name": + sortedSnapshot.sort((a, b) => a.account_id.localeCompare(b.account_id)); + break; + case "stake": + sortedSnapshot.sort((a, b) => { + const stakeA = new BN(a.stake); + const stakeB = new BN(b.stake); + return stakeA.cmp(stakeB); + }); + break; + case "active_months": + sortedSnapshot.sort((a, b) => a.active_months - b.active_months); + break; + case "vote_power": + sortedSnapshot = sortedSnapshot.map(a => ({ power: userToVotePower(a), ...a })).sort((a, b) => a.power - b.power); + break; + case "stake_power": + sortedSnapshot = sortedSnapshot.map(a => ({ power: stakePower(a.stake), ...a })).sort((a, b) => a.power - b.power); + break; + case "activity_power": + sortedSnapshot = sortedSnapshot.map(a => ({ power: activityPower(a.active_months), ...a })).sort((a, b) => a.power - b.power); + break; + default: + res.status(400).send(`Invalid sortBy parameter: ${sortBy}`); + break; + } + + if (sortOrder === "desc") { + sortedSnapshot.reverse(); + } + + const startIndex = pageNumber * limitNumber; + const endIndex = startIndex + limitNumber; + const paginatedData = sortedSnapshot.slice(startIndex, endIndex); + + // Prepare the response + const response = { + data: paginatedData, + currentPage: pageNumber + 1, + totalPages: Math.ceil(sortedSnapshot.length / limitNumber), + totalItems: sortedSnapshot.length, + }; + + res.json(response); +}; diff --git a/snapshotter/server/index.js b/snapshotter/server/index.js new file mode 100644 index 0000000..40f1cce --- /dev/null +++ b/snapshotter/server/index.js @@ -0,0 +1,18 @@ +import { app } from "./api/app.js"; +import fs from 'fs'; + +const port = process.env.SERVER_PORT || 3000; + +const configFile = process.env.SNAPSHOT_FILE || 'snapshot.json'; +export let snapshot = {} + +function loadSnapshot() { + const data = JSON.parse(fs.readFileSync(configFile, 'utf-8')).data; + snapshot = data; +} + +app.listen(port, () => { + loadSnapshot(); + console.log(`Dashboard server running on port :${port}`); + console.log(`------------------`); +}); diff --git a/snapshotter/server/package-lock.json b/snapshotter/server/package-lock.json new file mode 100644 index 0000000..3af7944 --- /dev/null +++ b/snapshotter/server/package-lock.json @@ -0,0 +1,1094 @@ +{ + "name": "server", 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