Add support for lines and traffic plugins

src/plugins/lines/index.mjs

@@ -1 +1,43 @@
-//Placeholder for https://docs.github.com/en/rest/reference/repos#get-all-contributor-commit-activity
+//Formatter
+  function format(n) {
+    for (const {u, v} of [{u:"b", v:10**9}, {u:"m", v:10**6}, {u:"k", v:10**3}])
+      if (n/v >= 1)
+        return `${(n/v).toFixed(2).substr(0, 4).replace(/[.]0*$/, "")}${u}`
+    return n
+  }
+
+//Setup
+  export default function ({login, repositories = [], rest, computed, pending, q}, {enabled = false} = {}) {
+    //Check if plugin is enabled and requirements are met
+      if (!enabled)
+        return computed.plugins.lines = null
+      if (!q.lines)
+        return computed.plugins.lines = null
+      console.debug(`metrics/plugins/lines/${login} > started`)
+
+    //Plugin execution
+      pending.push(new Promise(async solve => {
+        //Get contributors stats from repositories
+          const lines = {added:0, deleted:0}
+          const response = await Promise.all(repositories.map(async repo => await rest.repos.getContributorsStats({owner:login, repo})))
+        //Compute changed lines
+          response.map(({data:repository}) => {
+            //Check if data are available
+              if (!repository)
+                return
+            //Extract author
+              const [contributor] = repository.filter(({author}) => author.login === login)
+            //Compute editions
+              if (contributor)
+                contributor.weeks.forEach(({a, d}) => (lines.added += a, lines.deleted += d))
+          })
+        //Format values
+          lines.added = format(lines.added)
+          lines.deleted = format(lines.deleted)
+        //Save results
+          computed.plugins = {lines}
+          console.debug(`metrics/plugins/lines/${login} > ${JSON.stringify(computed.plugins.lines)}`)
+          solve()
+      }))
+  }
+