Add step creation/deletion functionality [SCI-6754]

app/controllers/steps_controller.rb

@@ -6,15 +6,19 @@ class StepsController < ApplicationController
 
   before_action :load_vars, only: %i(edit update destroy show toggle_step_state checklistitem_state update_view_state
                                      move_up move_down update_asset_view_mode)
-  before_action :load_vars_nested, only:  %i(new create)
+  before_action :load_vars_nested, only:  %i(new create index)
   before_action :convert_table_contents_to_utf8, only: %i(create update)
 
-  before_action :check_view_permissions, only: :show
+  before_action :check_view_permissions, only: %i(show index)
   before_action :check_create_permissions, only: %i(new create)
   before_action :check_manage_permissions, only: %i(edit update destroy move_up move_down
                                                     update_view_state update_asset_view_mode)
   before_action :check_complete_and_checkbox_permissions, only: %i(toggle_step_state checklistitem_state)
 
+  def index
+    render json: @protocol.steps.in_order, each_serializer: StepSerializer
+  end
+
   def new
     @step = Step.new
 
@@ -28,6 +32,16 @@ class StepsController < ApplicationController
   end
 
   def create
+    new_step = Step.new(
+      name: t('protocols.steps.default_name'),
+      completed: false,
+      user: current_user,
+      last_modified_by: current_user
+    )
+    render json: @protocol.insert_step(new_step, params[:position]), serializer: StepSerializer
+  end
+
+  def create_old
     @step = Step.new
     @step.transaction do
       new_step_params = step_params
@@ -264,23 +278,9 @@ class StepsController < ApplicationController
       # Release space taken by the step
       team.release_space(previous_size)
       team.save
-
-      flash[:success] = t(
-        'protocols.steps.destroy.success_flash',
-        step: (@step.position_plus_one).to_s
-      )
-    else
-      flash[:error] = t(
-        'protocols.steps.destroy.error_flash',
-        step: (@step.position_plus_one).to_s
-      )
     end
 
-    if @protocol.in_module?
-      redirect_to protocols_my_module_path(@step.my_module)
-    else
-      redirect_to edit_protocol_path(@protocol)
-    end
+    render json: @step, serializer: StepSerializer
   end
 
   # Responds to checkbox toggling in steps view

app/javascript/packs/vue/protocol.js

@@ -9,7 +9,6 @@ Vue.prototype.i18n = window.I18n;
 
 window.initProtocolComponent = () => {
   Vue.prototype.dateFormat = $('#protocolContainer').data('date-format');
-
   new Vue({
     el: '#protocolContainer',
     components: {
@@ -17,7 +16,9 @@ window.initProtocolComponent = () => {
     },
     data() {
       return {
-        protocolUrl: $('#protocolContainer').data('protocol-url')
+        protocolUrl: $('#protocolContainer').data('protocol-url'),
+        stepsUrl: $('#protocolContainer').data('steps-url'),
+        addStepUrl: $('#protocolContainer').data('add-step-url')
       };
     }
   });

app/javascript/vue/protocol/container.vue

@@ -13,28 +13,91 @@
           <input type="text" class="inline" :model="protocol.name" :placeholder="i18n.t('my_modules.protocols.protocol_status_bar.enter_name')">
         </div>
         <div class="protocol-steps">
-          Steps go here
+          <template v-for="(step, index) in steps">
+            <div class="step-block" :key="step.id">
+              <button v-if="index > 0" class="btn btn-primary" @click="addStep(index)">
+                <i class="fas fa-plus"></i>
+                {{ i18n.t("protocols.steps.new_step") }}
+              </button>
+              <Step
+                :step.sync="steps[index]"
+                @step:delete="updateStepsPosition"
+              />
             </div>
+          </template>
+        </div>
+        <button class="btn btn-primary" @click="addStep(steps.length)">
+          <i class="fas fa-plus"></i>
+          {{ i18n.t("protocols.steps.new_step") }}
+        </button>
       </div>
     </div>
 </template>
 
  <script>
+  import Step from 'vue/protocol/step'
+
   export default {
     name: 'ProtocolContainer',
     props: {
-      protocolUrl: String, required: true
+      protocolUrl: {
+        type: String,
+        required: true
       },
+      stepsUrl: {
+        type: String,
+        required: true
+      },
+      addStepUrl: {
+        type: String,
+        required: true
+      }
+    },
+    components: { Step },
     data() {
       return {
-        protocol: {}
+        protocol: {},
+        steps: {}
       }
     },
     created() {
       $.get(this.protocolUrl, (data) => {
         this.protocol = data;
       });
+      $.get(this.stepsUrl, (result) => {
+        this.steps = result.data
+      })
     },
-    methods: {}
+    methods: {
+      addStep(position) {
+        $.post(this.addStepUrl, {position: position}, (result) => {
+          this.updateStepsPosition(result.data)
+        })
+      },
+      updateStepsPosition(step, action = 'add') {
+        let position = step.attributes.position;
+        if (action === 'delete') {
+          this.steps.splice(position, 1)
+        }
+        let unordered_steps = this.steps.map( s => {
+          if (s.attributes.position >= position) {
+            if (action === 'add') {
+              s.attributes.position += 1;
+            } else {
+              s.attributes.position -= 1;
+            }
+          }
+          return s;
+        })
+        if (action === 'add') {
+          unordered_steps.push(step);
+        }
+        this.reorderSteps(unordered_steps)
+
+      },
+      reorderSteps(steps) {
+        this.steps = steps.sort((a, b) => a.attributes.position - b.attributes.position);
+      }
+    }
   }
  </script>

app/javascript/vue/protocol/step.vue

@@ -0,0 +1,37 @@
+<template>
+  <div class="step-container">
+    {{ step.attributes.position + 1 }}
+    {{ step.attributes.name }}
+    <button class="btn btn-danger" @click="deleteStep">
+      <i class="fas fa-trash"></i>
+      {{ i18n.t("protocols.steps.options.delete_title") }}
+    </button>
+  </div>
+</template>
+
+ <script>
+  export default {
+    name: 'StepContainer',
+    props: {
+      step: {
+        type: Object,
+        required: true
+      }
+    },
+    methods: {
+      deleteStep() {
+        $.ajax({
+          url: this.step.attributes.urls.delete_url,
+          type: 'DELETE',
+          success: (result) => {
+            this.$emit(
+              'step:delete',
+              result.data,
+              'delete'
+            );
+          }
+        });
+      }
+    }
+  }
+</script>

app/models/protocol.rb

@@ -202,6 +202,36 @@ class Protocol < ApplicationRecord
                    user_id: user.id))
   end
 
+  def insert_step(step, position)
+    ActiveRecord::Base.transaction do
+      steps.where('position >= ?', position).desc_order.each do |s|
+        s.update!(position: s.position + 1)
+      end
+      step.position = position
+      step.protocol = self
+      step.save!
+    end
+    step
+  end
+
+  def move_step(step, new_position)
+    ActiveRecord::Base.transaction do
+      old_position = step.position
+      step.update!(posistion: -1)
+      if old_position > new_position
+        steps.where('position > ? AND position <= ?', old_position, new_position).desc_order.each do |s|
+          s.update!(position: s.position + 1)
+        end
+      else
+        steps.where('position >= ? AND position < ?', old_position, new_position).at_order.each do |s|
+          s.update!(position: s.position - 1)
+        end
+      end
+      step.update!(posistion: new_position)
+    end
+    step
+  end
+
   def linked_modules
     MyModule.joins(:protocols).where('protocols.parent_id = ?', id)
   end

app/models/step.rb

@@ -45,6 +45,9 @@ class Step < ApplicationRecord
                                 },
                                 allow_destroy: true
 
+  scope :in_order, -> { order(position: :asc) }
+  scope :desc_order, -> { order(position: :desc) }
+
   def self.search(user,
                   include_archived,
                   query = nil,

app/serializers/step_serializer.rb

@@ -0,0 +1,11 @@
+class StepSerializer < ActiveModel::Serializer
+  include Rails.application.routes.url_helpers
+
+  attributes :name, :position, :completed, :urls
+
+  def urls
+    {
+      delete_url: step_path(object)
+    }
+  end
+end

app/views/my_modules/protocols.html.erb

@@ -121,11 +121,15 @@
       <div
           id="protocolContainer"
           data-protocol-url="<%= protocol_my_module_path(@my_module, @protocol) %>"
+          data-add-step-url="<%= protocol_steps_path(protocol_id: @protocol.id) %>"
+          data-steps-url="<%= steps_path(protocol_id: @protocol) %>"
           data-date-format="<%= datetime_picker_format_date_only %>"
           data-user-utc-offset="<%= ActiveSupport::TimeZone.find_tzinfo(current_user.time_zone).utc_offset %>"
       >
       <protocol-container
         :protocol-url="protocolUrl"
+        :steps-url="stepsUrl"
+        :add-step-url="addStepUrl"
       />
     </div>
     </div>

config/locales/en.yml

@@ -2491,6 +2491,7 @@ en:
           success_flash: 'Protocol <strong>%{name}</strong> successfully imported to %{type}.'
 
     steps:
+      default_name: 'Untitled step'
       completed: 'Completed'
       uncompleted: 'Uncompleted'
       expand_label: "Expand All"

config/routes.rb

@@ -443,7 +443,7 @@ Rails.application.routes.draw do
       get 'users/edit', to: 'user_my_modules#index_edit'
     end
 
-    resources :steps, only: [:edit, :update, :destroy, :show] do
+    resources :steps, only: %i(index edit update destroy show) do
       resources :step_comments,
                 path: '/comments',
                 only: %i(create index update destroy)