Display lint overview in Diffusion

Summary: I will add links from /diffusion/ARC/lint/ in future diff.

Test Plan:
/diffusion/ - clicked on lint messages link.
/diffusion/ARC/ - clicked on lint messages link.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3926

src/__phutil_library_map__.php

@@ -360,6 +360,7 @@ phutil_register_library_map(array(
     'DiffusionInlineCommentPreviewController' => 'applications/diffusion/controller/DiffusionInlineCommentPreviewController.php',
     'DiffusionLastModifiedController' => 'applications/diffusion/controller/DiffusionLastModifiedController.php',
     'DiffusionLastModifiedQuery' => 'applications/diffusion/query/lastmodified/DiffusionLastModifiedQuery.php',
+    'DiffusionLintController' => 'applications/diffusion/controller/DiffusionLintController.php',
     'DiffusionMercurialBranchQuery' => 'applications/diffusion/query/branch/DiffusionMercurialBranchQuery.php',
     'DiffusionMercurialBrowseQuery' => 'applications/diffusion/query/browse/DiffusionMercurialBrowseQuery.php',
     'DiffusionMercurialCommitParentsQuery' => 'applications/diffusion/query/parents/DiffusionMercurialCommitParentsQuery.php',
@@ -1599,6 +1600,7 @@ phutil_register_library_map(array(
     'DiffusionInlineCommentPreviewController' => 'PhabricatorInlineCommentPreviewController',
     'DiffusionLastModifiedController' => 'DiffusionController',
     'DiffusionLastModifiedQuery' => 'DiffusionQuery',
+    'DiffusionLintController' => 'DiffusionController',
     'DiffusionMercurialBranchQuery' => 'DiffusionBranchQuery',
     'DiffusionMercurialBrowseQuery' => 'DiffusionBrowseQuery',
     'DiffusionMercurialCommitParentsQuery' => 'DiffusionCommitParentsQuery',

src/applications/diffusion/application/PhabricatorApplicationDiffusion.php

@@ -41,6 +41,7 @@ final class PhabricatorApplicationDiffusion extends PhabricatorApplication {
           'diff/'                       => 'DiffusionDiffController',
           'tags/(?P<dblob>.*)'          => 'DiffusionTagListController',
           'branches/(?P<dblob>.*)'      => 'DiffusionBranchTableController',
+          'lint/(?P<dblob>.*)'          => 'DiffusionLintController',
 
           'commit/(?P<commit>[a-z0-9]+)/branches/'
             => 'DiffusionCommitBranchesController',

src/applications/diffusion/controller/DiffusionController.php

@@ -53,6 +53,11 @@ abstract class DiffusionController extends PhabricatorController {
     }
 
     $drequest = $this->getDiffusionRequest();
+    $branch = $drequest->loadBranch();
+
+    if ($branch && $branch->getLintCommit()) {
+      $navs['lint'] = 'Lint View';
+    }
 
     foreach ($navs as $action => $name) {
       $href = $drequest->generateURI(
@@ -243,6 +248,9 @@ abstract class DiffusionController extends PhabricatorController {
       case 'browse':
         $view_name = 'Browse';
         break;
+      case 'lint':
+        $view_name = 'Lint';
+        break;
       case 'change':
         $view_name = 'Change';
         $crumb_list[] = phutil_escape_html($path).' ('.$commit_link.')';
@@ -306,7 +314,7 @@ abstract class DiffusionController extends PhabricatorController {
         ),
         'Jump to HEAD');
       $last_crumb .= " @ {$commit_link} ({$jump_link})";
-    } else {
+    } else if ($spec['view'] != 'lint') {
       $last_crumb .= " @ HEAD";
     }
 

src/applications/diffusion/controller/DiffusionHomeController.php

@@ -98,11 +98,20 @@ final class DiffusionHomeController extends DiffusionController {
           number_format($size));
       }
 
+      $lint_count = '';
       $lint_branches = ipull(idx($lint_messages, $id, array()), 'n', 'name');
       $branch = $repository->getDefaultArcanistBranch();
-
       if (isset($lint_branches[$branch])) {
         $show_lint = true;
+        $lint_count = phutil_render_tag(
+          'a',
+          array(
+            'href' => DiffusionRequest::generateDiffusionURI(array(
+              'callsign' => $repository->getCallsign(),
+              'action' => 'lint',
+            )),
+          ),
+          number_format($lint_branches[$branch]));
       }
 
       $date = '-';
@@ -123,9 +132,7 @@ final class DiffusionHomeController extends DiffusionController {
         PhabricatorRepositoryType::getNameForRepositoryType(
           $repository->getVersionControlSystem()),
         $size,
-        (isset($lint_branches[$branch])
-          ? $lint_branches[$branch]
-          : ''),
+        $lint_count,
         $commit
           ? DiffusionView::linkCommit(
               $repository,

src/applications/diffusion/controller/DiffusionLintController.php

@@ -0,0 +1,93 @@
+<?php
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+final class DiffusionLintController extends DiffusionController {
+
+  public function processRequest() {
+    $codes = $this->loadLintCodes();
+    $codes = array_reverse(isort($codes, 'n'));
+
+    $rows = array();
+    foreach ($codes as $code) {
+      $rows[] = array(
+        $code['n'],
+        $code['files'],
+        phutil_escape_html(ArcanistLintSeverity::getStringForSeverity(
+          $code['maxSeverity'])),
+        phutil_escape_html($code['code']),
+        phutil_escape_html($code['maxName']),
+        phutil_escape_html($code['maxDescription']),
+      );
+    }
+
+    $table = id(new AphrontTableView($rows))
+      ->setHeaders(array(
+        'Problems',
+        'Files',
+        'Severity',
+        'Code',
+        'Name',
+        'Example',
+      ));
+
+    $content = array();
+
+    $content[] = $this->buildCrumbs(
+      array(
+        'branch' => true,
+        'path'   => true,
+        'view'   => 'lint',
+      ));
+
+    $content[] = id(new AphrontPanelView())
+      ->setHeader(array_sum(ipull($codes, 'n')).' Lint Messages')
+      ->appendChild($table);
+
+    $nav = $this->buildSideNav('lint', false);
+    $nav->appendChild($content);
+
+    return $this->buildStandardPageResponse(
+      $nav,
+      array('title' => array(
+        'Lint',
+        $this->getDiffusionRequest()->getRepository()->getCallsign(),
+      )));
+  }
+
+  private function loadLintCodes() {
+    $drequest = $this->getDiffusionRequest();
+    $branch = $drequest->loadBranch();
+    if (!$branch) {
+      return array();
+    }
+
+    $conn = $branch->establishConnection('r');
+
+    $where = '';
+    if ($drequest->getPath() != '') {
+      $is_dir = (substr($drequest->getPath(), -1) == '/');
+      $where = qsprintf(
+        $conn,
+        'AND path '.($is_dir ? 'LIKE %>' : '= %s'),
+        '/'.$drequest->getPath());
+    }
+
+    return queryfx_all(
+      $conn,
+      'SELECT
+          code,
+          MAX(severity) AS maxSeverity,
+          MAX(name) AS maxName,
+          MAX(description) AS maxDescription,
+          COUNT(DISTINCT path) AS files,
+          COUNT(*) AS n
+        FROM %T
+        WHERE branchID = %d
+        %Q
+        GROUP BY code',
+      PhabricatorRepository::TABLE_LINTMESSAGE,
+      $branch->getID(),
+      $where);
+  }
+
+}

src/applications/diffusion/request/DiffusionRequest.php

@@ -377,6 +377,7 @@ abstract class DiffusionRequest {
       case 'lastmodified':
       case 'tags':
       case 'branches':
+      case 'lint':
         $req_callsign = true;
         break;
       case 'branch':
@@ -411,6 +412,7 @@ abstract class DiffusionRequest {
       case 'lastmodified':
       case 'tags':
       case 'branches':
+      case 'lint':
         $uri = "/diffusion/{$callsign}{$action}/{$path}{$commit}{$line}";
         break;
       case 'branch':

src/applications/diffusion/view/DiffusionBrowseTableView.php

@@ -81,8 +81,14 @@ final class DiffusionBrowseTableView extends DiffusionView {
 
     $lint = self::loadLintMessagesCount($drequest);
     if ($lint !== null) {
-      $return['lint'] = (string)$lint;
+      $return['lint'] = phutil_render_tag(
+        'a',
+        array(
+          'href' => $drequest->generateURI(array('action' => 'lint')),
+        ),
+        number_format($lint));
     }
+
     return $return;
   }