feat(plugins/community/chess): add plugin (#1215) [skip ci]

source/plugins/community/chess/index.mjs

@@ -0,0 +1,48 @@
+//Imports
+import { Chess } from "chess.js"
+
+//Setup
+export default async function({login, q, imports, data, account}, {enabled = false, token = "", extras = false} = {}) {
+  //Plugin execution
+  try {
+    //Check if plugin is enabled and requirements are met
+    if ((!q.chess) || (!imports.metadata.plugins.chess.enabled(enabled, {extras})))
+      return null
+
+    //Load inputs
+    const {user, platform, animation} = imports.metadata.plugins.chess.inputs({data, account, q})
+    for (const [key, defaulted] of Object.entries({size:40, delay:1, duration:4})) {
+      if (Number.isNaN(Number(animation[key])))
+        animation[key] = defaulted
+      if (animation[key] < 0)
+        animation[key] = defaulted
+    }
+
+    //Fetch PGN
+    console.debug(`metrics/compute/${login}/plugins > chess > fetching last game from ${platform}`)
+    let PGN
+    switch (platform) {
+      case "lichess.org":
+        PGN = (await imports.axios.get(`https://lichess.org/api/games/user/${user}?max=1`, {headers: {Authorization: `Bearer ${token}`}})).data
+        break
+      case "":
+        throw {error: {message: "Unspecified platform"}}
+      default:
+        throw {error: {message: `Unsupported platform "${platform}"`}}
+    }
+
+    //Parse PGN
+    const board = new Chess()
+    board.loadPgn(PGN)
+    const moves = board.history({verbose: true})
+    const meta = board.header()
+    const result = Object.fromEntries(meta.Result.split("-").map((score, i) => [i ? "black" : "white", Number(score)]))
+
+    //Results
+    return {platform, meta, moves, animation, result}
+  }
+  //Handle errors
+  catch (error) {
+    throw imports.format.error(error)
+  }
+}