feat: Add Public APIs for API Channel (#2375)

db/migrate/20210602182058_add_hmac_to_api_channel.rb

@@ -0,0 +1,19 @@
+class AddHmacToApiChannel < ActiveRecord::Migration[6.0]
+  def change
+    add_column :channel_api, :identifier, :string
+    add_index :channel_api, :identifier, unique: true
+    add_column :channel_api, :hmac_token, :string
+    add_index :channel_api, :hmac_token, unique: true
+    add_column :channel_api, :hmac_mandatory, :boolean, default: false
+    add_column :channel_web_widgets, :hmac_mandatory, :boolean, default: false
+    set_up_existing_api_channels
+  end
+
+  def set_up_existing_api_channels
+    ::Channel::Api.find_in_batches do |api_channels_batch|
+      Rails.logger.info "migrated till #{api_channels_batch.first.id}\n"
+      api_channels_batch.map(&:regenerate_hmac_token)
+      api_channels_batch.map(&:regenerate_identifier)
+    end
+  end
+end

db/schema.rb

@@ -143,6 +143,11 @@ ActiveRecord::Schema.define(version: 2021_06_09_133433) do
     t.string "webhook_url"
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
+    t.string "identifier"
+    t.string "hmac_token"
+    t.boolean "hmac_mandatory", default: false
+    t.index ["hmac_token"], name: "index_channel_api_on_hmac_token", unique: true
+    t.index ["identifier"], name: "index_channel_api_on_identifier", unique: true
   end
 
   create_table "channel_email", force: :cascade do |t|
@@ -201,6 +206,7 @@ ActiveRecord::Schema.define(version: 2021_06_09_133433) do
     t.string "hmac_token"
     t.boolean "pre_chat_form_enabled", default: false
     t.jsonb "pre_chat_form_options", default: {}
+    t.boolean "hmac_mandatory", default: false
     t.index ["hmac_token"], name: "index_channel_web_widgets_on_hmac_token", unique: true
     t.index ["website_token"], name: "index_channel_web_widgets_on_website_token", unique: true
   end