1 files changed, 180 insertions, 0 deletions
diff --git a/web_src/js/features/repo-home.js b/web_src/js/features/repo-home.js
new file mode 100644
index 0000000000..142698f074
--- /dev/null
+++ b/web_src/js/features/repo-home.js
@@ -0,0 +1,180 @@
+import {stripTags} from '../utils.js';
+
+const {AppSubUrl, csrf} = window.config;
+
+export function initRepoTopicBar() {
+  const mgrBtn = $('#manage_topic');
+  const editDiv = $('#topic_edit');
+  const viewDiv = $('#repo-topics');
+  const saveBtn = $('#save_topic');
+  const topicDropdown = $('#topic_edit .dropdown');
+  const topicForm = $('#topic_edit.ui.form');
+  const topicPrompts = getPrompts();
+
+  mgrBtn.on('click', () => {
+    viewDiv.hide();
+    editDiv.css('display', ''); // show Semantic UI Grid
+  });
+
+  function getPrompts() {
+    const hidePrompt = $('div.hide#validate_prompt');
+    const prompts = {
+      countPrompt: hidePrompt.children('#count_prompt').text(),
+      formatPrompt: hidePrompt.children('#format_prompt').text()
+    };
+    hidePrompt.remove();
+    return prompts;
+  }
+
+  saveBtn.on('click', () => {
+    const topics = $('input[name=topics]').val();
+
+    $.post(saveBtn.data('link'), {
+      _csrf: csrf,
+      topics
+    }, (_data, _textStatus, xhr) => {
+      if (xhr.responseJSON.status === 'ok') {
+        viewDiv.children('.topic').remove();
+        if (topics.length) {
+          const topicArray = topics.split(',');
+
+          const last = viewDiv.children('a').last();
+          for (let i = 0; i < topicArray.length; i++) {
+            const link = $('<a class="ui repo-topic large label topic"></a>');
+            link.attr('href', `${AppSubUrl}/explore/repos?q=${encodeURIComponent(topicArray[i])}&topic=1`);
+            link.text(topicArray[i]);
+            link.insertBefore(last);
+          }
+        }
+        editDiv.css('display', 'none');
+        viewDiv.show();
+      }
+    }).fail((xhr) => {
+      if (xhr.status === 422) {
+        if (xhr.responseJSON.invalidTopics.length > 0) {
+          topicPrompts.formatPrompt = xhr.responseJSON.message;
+
+          const {invalidTopics} = xhr.responseJSON;
+          const topicLables = topicDropdown.children('a.ui.label');
+
+          topics.split(',').forEach((value, index) => {
+            for (let i = 0; i < invalidTopics.length; i++) {
+              if (invalidTopics[i] === value) {
+                topicLables.eq(index).removeClass('green').addClass('red');
+              }
+            }
+          });
+        } else {
+          topicPrompts.countPrompt = xhr.responseJSON.message;
+        }
+      }
+    }).always(() => {
+      topicForm.form('validate form');
+    });
+  });
+
+  topicDropdown.dropdown({
+    allowAdditions: true,
+    forceSelection: false,
+    fullTextSearch: 'exact',
+    fields: {name: 'description', value: 'data-value'},
+    saveRemoteData: false,
+    label: {
+      transition: 'horizontal flip',
+      duration: 200,
+      variation: false,
+      blue: true,
+      basic: true,
+    },
+    className: {
+      label: 'ui small label'
+    },
+    apiSettings: {
+      url: `${AppSubUrl}/api/v1/topics/search?q={query}`,
+      throttle: 500,
+      cache: false,
+      onResponse(res) {
+        const formattedResponse = {
+          success: false,
+          results: [],
+        };
+        const query = stripTags(this.urlData.query.trim());
+        let found_query = false;
+        const current_topics = [];
+        topicDropdown.find('div.label.visible.topic,a.label.visible').each((_, e) => { current_topics.push(e.dataset.value) });
+
+        if (res.topics) {
+          let found = false;
+          for (let i = 0; i < res.topics.length; i++) {
+            // skip currently added tags
+            if (current_topics.includes(res.topics[i].topic_name)) {
+              continue;
+            }
+
+            if (res.topics[i].topic_name.toLowerCase() === query.toLowerCase()) {
+              found_query = true;
+            }
+            formattedResponse.results.push({description: res.topics[i].topic_name, 'data-value': res.topics[i].topic_name});
+            found = true;
+          }
+          formattedResponse.success = found;
+        }
+
+        if (query.length > 0 && !found_query) {
+          formattedResponse.success = true;
+          formattedResponse.results.unshift({description: query, 'data-value': query});
+        } else if (query.length > 0 && found_query) {
+          formattedResponse.results.sort((a, b) => {
+            if (a.description.toLowerCase() === query.toLowerCase()) return -1;
+            if (b.description.toLowerCase() === query.toLowerCase()) return 1;
+            if (a.description > b.description) return -1;
+            if (a.description < b.description) return 1;
+            return 0;
+          });
+        }
+
+        return formattedResponse;
+      },
+    },
+    onLabelCreate(value) {
+      value = value.toLowerCase().trim();
+      this.attr('data-value', value).contents().first().replaceWith(value);
+      return $(this);
+    },
+    onAdd(addedValue, _addedText, $addedChoice) {
+      addedValue = addedValue.toLowerCase().trim();
+      $($addedChoice).attr('data-value', addedValue);
+      $($addedChoice).attr('data-text', addedValue);
+    }
+  });
+
+  $.fn.form.settings.rules.validateTopic = function (_values, regExp) {
+    const topics = topicDropdown.children('a.ui.label');
+    const status = topics.length === 0 || topics.last().attr('data-value').match(regExp);
+    if (!status) {
+      topics.last().removeClass('green').addClass('red');
+    }
+    return status && topicDropdown.children('a.ui.label.red').length === 0;
+  };
+
+  topicForm.form({
+    on: 'change',
+    inline: true,
+    fields: {
+      topics: {
+        identifier: 'topics',
+        rules: [
+          {
+            type: 'validateTopic',
+            value: /^[a-z0-9][a-z0-9-]{0,35}$/,
+            prompt: topicPrompts.formatPrompt
+          },
+          {
+            type: 'maxCount[25]',
+            prompt: topicPrompts.countPrompt
+          }
+        ]
+      },
+    }
+  });
+}