feat(cli): user now inferred from auth token

If just a repo is specified we assume the intended user is the owner of
the auth token.

src/cli.js

@@ -64,6 +64,18 @@ const handleError = e => {
   process.exit(1)
 }
 
+const fetchRepo = (user, repo) =>
+      main.repoContributors({
+        user,
+        repo,
+        before,
+        after,
+        token,
+        debug: debugMode
+      }).then(formatReturn)
+      .then(handleOut)
+      .catch(handleError)
+
 if (cli.flags.o) {
   main.orgContributors({
     debug: debugMode,
@@ -75,37 +87,11 @@ if (cli.flags.o) {
     .then(handleOut)
     .catch(handleError)
 } else if (cli.flags.u && cli.flags.r) {
-  main.repoContributors({
-    debug: debugMode,
-    token: token,
-    user: cli.flags.u,
-    repo: cli.flags.r,
-    before: before,
-    after: after
-  }).then(formatReturn)
-    .then(handleOut)
-    .catch(handleError)
-} else {
-  (async () => {
-    const creds = await main.getCurrentRepoInfo()
+  fetchRepo(cli.flags.u, cli.flags.r)
+} else if (cli.flags.r) {
+  main.currentUser(token).then(user => fetchRepo(user, cli.flags.r))
+} else if (cli.flags.u) {
 
-    return main.repoContributors({
-      token,
-      debug: debugMode,
-      user: creds.user,
-      repo: creds.repo,
-      before,
-      after
-    }).then(x => {
-      if (!x.user || !x.repo) {
-        return x
-      } else {
-        console.error('Not in a git repository')
-        console.error(cli.help)
-        process.exit(1)
-      }
-    }).then(formatReturn)
-      .then(handleOut)
-      .catch(handleError)
-  })()
+} else {
+  main.getCurrentRepoInfo().then(({user, repo}) => fetchRepo(user, repo))
 }

src/index.js

@@ -78,9 +78,17 @@ const orgContributors = ({token, orgName, before, after, debug}) =>
       graphql.executequery(token, queries.orgRepos(orgName, before, after), debug)
       .then(data => queries.cleanOrgRepos(token, data, before, after))
 
+/** Returns the login of the user to whom the given token is registered.
+  * @param token - GitHub Auth token
+  */
+const currentUser = token =>
+      graphql.executequery(token, queries.whoAmI)
+      .then(queries.cleanWhoAmI)
+
 module.exports = {
   toCSV,
   getCurrentRepoInfo,
+  currentUser,
   repoContributors,
   orgContributors,
   userRepoNames

src/queries.js

@@ -7,6 +7,8 @@ const node = graphql.queryNode
 // Queries
 /// //
 
+const whoAmI = node('viewer').addChild(node('login'))
+
 const pagination = node('pageInfo')
       .addChild(node('endCursor'))
       .addChild(node('hasNextPage'))
@@ -378,7 +380,11 @@ const cleanOrgRepos = async (token, result, before, after) => {
     await Promise.all(repos.map(repo => cleanRepo(token, repo, before, after))))
 }
 
+const cleanWhoAmI = x => x.viewer.login
+
 module.exports = {
+  whoAmI,
+  cleanWhoAmI,
   repository,
   organization,
   orgRepos,