Setup Vue app for repository file listing

Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/61578

24 files changed, 184 insertions, 4 deletions

diff --git a/app/assets/javascripts/pages/projects/show/index.js b/app/assets/javascripts/pages/projects/show/index.js
index 869f70e7d33..6aa41d0825b 100644
--- a/app/assets/javascripts/pages/projects/show/index.js
+++ b/app/assets/javascripts/pages/projects/show/index.js
@@ -46,4 +46,12 @@ document.addEventListener('DOMContentLoaded', () => {
 
   GpgBadges.fetch();
   leaveByUrl('project');
+
+  if (document.getElementById('js-tree-list')) {
+    import('~/repository')
+      .then(m => m.default())
+      .catch(e => {
+        throw e;
+      });
+  }
 });
diff --git a/app/assets/javascripts/pages/projects/tree/show/index.js b/app/assets/javascripts/pages/projects/tree/show/index.js
index 400aed35e32..7b90a3a4f6e 100644
--- a/app/assets/javascripts/pages/projects/tree/show/index.js
+++ b/app/assets/javascripts/pages/projects/tree/show/index.js
@@ -40,4 +40,12 @@ document.addEventListener('DOMContentLoaded', () => {
   }
 
   GpgBadges.fetch();
+
+  if (document.getElementById('js-tree-list')) {
+    import('~/repository')
+      .then(m => m.default())
+      .catch(e => {
+        throw e;
+      });
+  }
 });
diff --git a/app/assets/javascripts/repository/components/app.vue b/app/assets/javascripts/repository/components/app.vue
new file mode 100644
index 00000000000..98240aef810
--- /dev/null
+++ b/app/assets/javascripts/repository/components/app.vue
@@ -0,0 +1,3 @@
+<template>
+  <router-view />
+</template>
diff --git a/app/assets/javascripts/repository/graphql.js b/app/assets/javascripts/repository/graphql.js
new file mode 100644
index 00000000000..febfcce780c
--- /dev/null
+++ b/app/assets/javascripts/repository/graphql.js
@@ -0,0 +1,11 @@
+import Vue from 'vue';
+import VueApollo from 'vue-apollo';
+import createDefaultClient from '~/lib/graphql';
+
+Vue.use(VueApollo);
+
+const defaultClient = createDefaultClient({});
+
+export default new VueApollo({
+  defaultClient,
+});
diff --git a/app/assets/javascripts/repository/index.js b/app/assets/javascripts/repository/index.js
new file mode 100644
index 00000000000..00b69362312
--- /dev/null
+++ b/app/assets/javascripts/repository/index.js
@@ -0,0 +1,25 @@
+import Vue from 'vue';
+import createRouter from './router';
+import App from './components/app.vue';
+import apolloProvider from './graphql';
+
+export default function setupVueRepositoryList() {
+  const el = document.getElementById('js-tree-list');
+  const { projectPath, ref } = el.dataset;
+
+  apolloProvider.clients.defaultClient.cache.writeData({
+    data: {
+      projectPath,
+      ref,
+    },
+  });
+
+  return new Vue({
+    el,
+    router: createRouter(projectPath, ref),
+    apolloProvider,
+    render(h) {
+      return h(App);
+    },
+  });
+}
diff --git a/app/assets/javascripts/repository/pages/index.vue b/app/assets/javascripts/repository/pages/index.vue
new file mode 100644
index 00000000000..fdbf195f0f6
--- /dev/null
+++ b/app/assets/javascripts/repository/pages/index.vue
@@ -0,0 +1,24 @@
+<script>
+import getRef from '../queries/getRef.graphql';
+
+export default {
+  apollo: {
+    ref: {
+      query: getRef,
+    },
+  },
+  data() {
+    return {
+      ref: '',
+    };
+  },
+};
+</script>
+
+<template>
+  <div>
+    <router-link :to="{ path: `/tree/${ref}/app` }">
+      Go to tree
+    </router-link>
+  </div>
+</template>
diff --git a/app/assets/javascripts/repository/pages/tree.vue b/app/assets/javascripts/repository/pages/tree.vue
new file mode 100644
index 00000000000..f51aafee775
--- /dev/null
+++ b/app/assets/javascripts/repository/pages/tree.vue
@@ -0,0 +1,15 @@
+<script>
+export default {
+  props: {
+    path: {
+      type: String,
+      required: false,
+      default: '/',
+    },
+  },
+};
+</script>
+
+<template>
+  <div>{{ path }}</div>
+</template>
diff --git a/app/assets/javascripts/repository/queries/getRef.graphql b/app/assets/javascripts/repository/queries/getRef.graphql
new file mode 100644
index 00000000000..58c09844c3f
--- /dev/null
+++ b/app/assets/javascripts/repository/queries/getRef.graphql
@@ -0,0 +1,3 @@
+query getRef {
+  ref @client
+}
diff --git a/app/assets/javascripts/repository/router.js b/app/assets/javascripts/repository/router.js
new file mode 100644
index 00000000000..b42a96a4ee2
--- /dev/null
+++ b/app/assets/javascripts/repository/router.js
@@ -0,0 +1,36 @@
+import Vue from 'vue';
+import VueRouter from 'vue-router';
+import { joinPaths } from '../lib/utils/url_utility';
+import IndexPage from './pages/index.vue';
+import TreePage from './pages/tree.vue';
+
+Vue.use(VueRouter);
+
+export default function createRouter(base, baseRef) {
+  return new VueRouter({
+    mode: 'history',
+    base: joinPaths(gon.relative_url_root || '', base),
+    routes: [
+      {
+        path: '/',
+        name: 'projectRoot',
+        component: IndexPage,
+      },
+      {
+        path: `/tree/${baseRef}(/.*)?`,
+        name: 'treePath',
+        component: TreePage,
+        props: route => ({
+          path: route.params.pathMatch,
+        }),
+        beforeEnter(to, from, next) {
+          document
+            .querySelectorAll('.js-hide-on-navigation')
+            .forEach(el => el.classList.add('hidden'));
+
+          next();
+        },
+      },
+    ],
+  });
+}
diff --git a/app/views/projects/_files.html.haml b/app/views/projects/_files.html.haml
index 22a721ee9ad..0edd8ee5e46 100644
--- a/app/views/projects/_files.html.haml
+++ b/app/views/projects/_files.html.haml
@@ -4,6 +4,7 @@
 - project = local_assigns.fetch(:project) { @project }
 - content_url = local_assigns.fetch(:content_url) { @tree.readme ? project_blob_path(@project, tree_join(@ref, @tree.readme.path)) : project_tree_path(@project, @ref) }
 - show_auto_devops_callout = show_auto_devops_callout?(@project)
+- vue_file_list = Feature.enabled?(:vue_file_list, @project)
 
 #tree-holder.tree-holder.clearfix
   .nav-block
@@ -13,7 +14,12 @@
     = render 'shared/commit_well', commit: commit, ref: ref, project: project
 
   - if is_project_overview
-    .project-buttons.append-bottom-default
+    .project-buttons.append-bottom-default{ class: ("js-hide-on-navigation" if vue_file_list) }
       = render 'stat_anchor_list', anchors: @project.statistics_buttons(show_auto_devops_callout: show_auto_devops_callout)
 
-  = render 'projects/tree/tree_content', tree: @tree, content_url: content_url
+  - if vue_file_list
+    #js-tree-list{ data: { project_path: @project.full_path, ref: ref } }
+    - if @tree.readme
+      = render "projects/tree/readme", readme: @tree.readme
+  - else
+    = render 'projects/tree/tree_content', tree: @tree, content_url: content_url
diff --git a/app/views/projects/_home_panel.html.haml b/app/views/projects/_home_panel.html.haml
index 3ca4abddbb8..a97322dace4 100644
--- a/app/views/projects/_home_panel.html.haml
+++ b/app/views/projects/_home_panel.html.haml
@@ -1,7 +1,7 @@
 - empty_repo = @project.empty_repo?
 - show_auto_devops_callout = show_auto_devops_callout?(@project)
 - max_project_topic_length = 15
-.project-home-panel{ class: ("empty-project" if empty_repo) }
+.project-home-panel{ class: [("empty-project" if empty_repo), ("js-hide-on-navigation" if Feature.enabled?(:vue_file_list, @project))] }
   .row.append-bottom-8
     .home-panel-title-row.col-md-12.col-lg-6.d-flex
       .avatar-container.rect-avatar.s64.home-panel-avatar.append-right-default.float-none
diff --git a/app/views/projects/tree/_readme.html.haml b/app/views/projects/tree/_readme.html.haml
index 4daacbe157c..e935af23659 100644
--- a/app/views/projects/tree/_readme.html.haml
+++ b/app/views/projects/tree/_readme.html.haml
@@ -1,5 +1,5 @@
 - if readme.rich_viewer
-  %article.file-holder.readme-holder{ id: 'readme', class: ("limited-width-container" unless fluid_layout) }
+  %article.file-holder.readme-holder{ id: 'readme', class: [("limited-width-container" unless fluid_layout), ("js-hide-on-navigation" if Feature.enabled?(:vue_file_list, @project))] }
     .js-file-title.file-title
       = blob_icon readme.mode, readme.name
       = link_to project_blob_path(@project, tree_join(@ref, readme.path)) do
diff --git a/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb b/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb
index b6dbf76bc9b..51c884201a6 100644
--- a/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb
+++ b/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb
@@ -5,6 +5,8 @@ describe 'Projects > Files > User views files page' do
   let(:user) { project.owner }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     sign_in user
     visit project_tree_path(project, project.repository.root_ref)
   end
diff --git a/spec/features/projects/files/user_browses_files_spec.rb b/spec/features/projects/files/user_browses_files_spec.rb
index 66268355345..a5d849db8a3 100644
--- a/spec/features/projects/files/user_browses_files_spec.rb
+++ b/spec/features/projects/files/user_browses_files_spec.rb
@@ -11,6 +11,7 @@ describe "User browses files" do
   let(:user) { project.owner }
 
   before do
+    stub_feature_flags(vue_file_list: false)
     stub_feature_flags(csslab: false)
     sign_in(user)
   end
diff --git a/spec/features/projects/files/user_browses_lfs_files_spec.rb b/spec/features/projects/files/user_browses_lfs_files_spec.rb
index d56476adb05..d5cb8f9212d 100644
--- a/spec/features/projects/files/user_browses_lfs_files_spec.rb
+++ b/spec/features/projects/files/user_browses_lfs_files_spec.rb
@@ -5,6 +5,8 @@ describe 'Projects > Files > User browses LFS files' do
   let(:user) { project.owner }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     sign_in(user)
   end
 
diff --git a/spec/features/projects/files/user_creates_directory_spec.rb b/spec/features/projects/files/user_creates_directory_spec.rb
index 847b5f0860f..e29e867492e 100644
--- a/spec/features/projects/files/user_creates_directory_spec.rb
+++ b/spec/features/projects/files/user_creates_directory_spec.rb
@@ -11,6 +11,8 @@ describe 'Projects > Files > User creates a directory', :js do
   let(:user) { create(:user) }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     project.add_developer(user)
     sign_in(user)
     visit project_tree_path(project, 'master')
diff --git a/spec/features/projects/files/user_deletes_files_spec.rb b/spec/features/projects/files/user_deletes_files_spec.rb
index 614b11fa5c8..11ee87f245b 100644
--- a/spec/features/projects/files/user_deletes_files_spec.rb
+++ b/spec/features/projects/files/user_deletes_files_spec.rb
@@ -12,6 +12,8 @@ describe 'Projects > Files > User deletes files', :js do
   let(:user) { create(:user) }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     sign_in(user)
   end
 
diff --git a/spec/features/projects/files/user_edits_files_spec.rb b/spec/features/projects/files/user_edits_files_spec.rb
index 2de22582b2c..26efb5e6787 100644
--- a/spec/features/projects/files/user_edits_files_spec.rb
+++ b/spec/features/projects/files/user_edits_files_spec.rb
@@ -10,6 +10,7 @@ describe 'Projects > Files > User edits files', :js do
 
   before do
     stub_feature_flags(web_ide_default: false)
+    stub_feature_flags(vue_file_list: false)
 
     sign_in(user)
   end
diff --git a/spec/features/projects/files/user_replaces_files_spec.rb b/spec/features/projects/files/user_replaces_files_spec.rb
index e3da28d73c3..bfd612e4cc8 100644
--- a/spec/features/projects/files/user_replaces_files_spec.rb
+++ b/spec/features/projects/files/user_replaces_files_spec.rb
@@ -14,6 +14,8 @@ describe 'Projects > Files > User replaces files', :js do
   let(:user) { create(:user) }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     sign_in(user)
   end
 
diff --git a/spec/features/projects/files/user_uploads_files_spec.rb b/spec/features/projects/files/user_uploads_files_spec.rb
index af3fc528a20..25ff3fdf411 100644
--- a/spec/features/projects/files/user_uploads_files_spec.rb
+++ b/spec/features/projects/files/user_uploads_files_spec.rb
@@ -14,6 +14,8 @@ describe 'Projects > Files > User uploads files' do
   let(:project2_tree_path_root_ref) { project_tree_path(project2, project2.repository.root_ref) }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     project.add_maintainer(user)
     sign_in(user)
   end
diff --git a/spec/features/projects/tree/tree_show_spec.rb b/spec/features/projects/tree/tree_show_spec.rb
index 45e81e1c040..3ccea2db705 100644
--- a/spec/features/projects/tree/tree_show_spec.rb
+++ b/spec/features/projects/tree/tree_show_spec.rb
@@ -8,6 +8,7 @@ describe 'Projects tree', :js do
   let(:test_sha) { '7975be0116940bf2ad4321f79d02a55c5f7779aa' }
 
   before do
+    stub_feature_flags(vue_file_list: false)
     project.add_maintainer(user)
     sign_in(user)
   end
diff --git a/spec/features/projects_spec.rb b/spec/features/projects_spec.rb
index ff4e6197746..4fe45311b2d 100644
--- a/spec/features/projects_spec.rb
+++ b/spec/features/projects_spec.rb
@@ -5,6 +5,7 @@ describe 'Project' do
   include MobileHelpers
 
   before do
+    stub_feature_flags(vue_file_list: false)
     stub_feature_flags(approval_rules: false)
   end
 
diff --git a/spec/frontend/repository/router_spec.js b/spec/frontend/repository/router_spec.js
new file mode 100644
index 00000000000..f61a0ccd1e6
--- /dev/null
+++ b/spec/frontend/repository/router_spec.js
@@ -0,0 +1,23 @@
+import IndexPage from '~/repository/pages/index.vue';
+import TreePage from '~/repository/pages/tree.vue';
+import createRouter from '~/repository/router';
+
+describe('Repository router spec', () => {
+  it.each`
+    path                         | component    | componentName
+    ${'/'}                       | ${IndexPage} | ${'IndexPage'}
+    ${'/tree/master'}            | ${TreePage}  | ${'TreePage'}
+    ${'/tree/master/app/assets'} | ${TreePage}  | ${'TreePage'}
+    ${'/tree/123/app/assets'}    | ${null}      | ${'null'}
+  `('sets component as $componentName for path "$path"', ({ path, component }) => {
+    const router = createRouter('', 'master');
+
+    const componentsForRoute = router.getMatchedComponents(path);
+
+    expect(componentsForRoute.length).toBe(component ? 1 : 0);
+
+    if (component) {
+      expect(componentsForRoute).toContain(component);
+    }
+  });
+});
diff --git a/spec/views/projects/tree/show.html.haml_spec.rb b/spec/views/projects/tree/show.html.haml_spec.rb
index 3b098320ad7..5bb0173ab89 100644
--- a/spec/views/projects/tree/show.html.haml_spec.rb
+++ b/spec/views/projects/tree/show.html.haml_spec.rb
@@ -7,6 +7,8 @@ describe 'projects/tree/show' do
   let(:repository) { project.repository }
 
   before do
+    stub_feature_flags(vue_file_list: false)
+
     assign(:project, project)
     assign(:repository, repository)
     assign(:lfs_blob_ids, [])