Initial commit

db/migrate/20190624102330_rename_market_fields.rb

@@ -0,0 +1,126 @@
+class RenameMarketFields < ActiveRecord::Migration[5.2]
+  def change
+    reversible do |dir|
+      dir.up do
+        # ask_unit, bid_unit
+        rename_column :markets, :ask_unit, :base_unit if column_exists?(:markets, :ask_unit)
+        rename_column :markets, :bid_unit, :quote_unit if column_exists?(:markets, :bid_unit)
+
+        # ask_precision, bid_precision
+        change_column :markets, :ask_precision, :integer, default: 4, limit: 1, after: :quote_unit if column_exists?(:markets, :ask_precision)
+        change_column :markets, :bid_precision, :integer, default: 4, limit: 1, after: :ask_precision if column_exists?(:markets, :bid_precision)
+
+        rename_column :markets, :ask_precision, :amount_precision if column_exists?(:markets, :ask_precision)
+        rename_column :markets, :bid_precision, :price_precision if column_exists?(:markets, :bid_precision)
+
+        # min_ask_price, max_bid_price
+        rename_column :markets, :min_ask_price, :min_price if column_exists?(:markets, :min_ask_price)
+        rename_column :markets, :max_bid_price, :max_price if column_exists?(:markets, :max_bid_price)
+
+        # min_ask_amount, min_bid_amount
+        rename_column :markets, :min_ask_amount, :min_amount if column_exists?(:markets, :min_ask_amount)
+        remove_column :markets, :min_bid_amount if column_exists?(:markets, :min_bid_amount)
+
+        if column_exists?(:markets, :enabled)
+          add_column :markets, :state, :string, limit: 32, default: :enabled, null: false, after: :position
+          Market.find_each do |m|
+            m.update_attribute(:state, m.enabled ? :enabled : :disabled)
+          end
+          remove_column :markets, :enabled
+        end
+      end
+
+      dir.down do
+        # ask_unit, bid_unit
+        rename_column :markets, :base_unit, :ask_unit if column_exists?(:markets, :base_unit)
+        rename_column :markets, :quote_unit, :bid_unit if column_exists?(:markets, :quote_unit)
+
+        # ask_precision, bid_precision
+        change_column :markets, :amount_precision, :integer, default: 8, limit: 1, after: :min_amount if column_exists?(:markets, :amount_precision)
+        change_column :markets, :price_precision, :integer, default: 8, limit: 1, after: :amount_precision if column_exists?(:markets, :price_precision)
+
+        rename_column :markets, :amount_precision, :ask_precision if column_exists?(:markets, :amount_precision)
+        rename_column :markets, :price_precision, :bid_precision if column_exists?(:markets, :price_precision)
+
+        # min_ask_price, max_bid_price
+        rename_column :markets, :min_price, :min_ask_price if column_exists?(:markets, :min_price)
+        rename_column :markets, :max_price, :max_bid_price if column_exists?(:markets, :max_price)
+
+        # min_ask_amount, min_bid_amount
+        rename_column :markets, :min_amount, :min_ask_amount if column_exists?(:markets, :min_amount)
+        unless column_exists?(:markets, :min_bid_amount)
+          add_column :markets, :min_bid_amount, :decimal,
+                     precision: 32, scale: 16, default: 0.0, null: false, after: :min_ask_amount
+        end
+
+        if column_exists?(:markets, :state)
+          add_column :markets, :enabled, :boolean, default: true, null: false, after: :position
+          Market.find_each do |m|
+            m.update_attribute(:enabled, m.state == 'enabled')
+          end
+          remove_column :markets, :state
+        end
+      end
+    end
+  end
+end
+
+# == BEFORE ==
+# == Schema Information
+# Schema version: 20190116140939
+#
+# Table name: markets
+#
+#  id             :string(20)       not null, primary key
+#  ask_unit       :string(10)       not null
+#  bid_unit       :string(10)       not null
+#  ask_fee        :decimal(17, 16)  default(0.0), not null
+#  bid_fee        :decimal(17, 16)  default(0.0), not null
+#  min_ask_price  :decimal(32, 16)  default(0.0), not null
+#  max_bid_price  :decimal(32, 16)  default(0.0), not null
+#  min_ask_amount :decimal(32, 16)  default(0.0), not null
+#  min_bid_amount :decimal(32, 16)  default(0.0), not null
+#  ask_precision  :integer          default(8), not null
+#  bid_precision  :integer          default(8), not null
+#  position       :integer          default(0), not null
+#  enabled        :boolean          default(TRUE), not null
+#  created_at     :datetime         not null
+#  updated_at     :datetime         not null
+#
+# Indexes
+#
+#  index_markets_on_ask_unit               (ask_unit)
+#  index_markets_on_ask_unit_and_bid_unit  (ask_unit,bid_unit) UNIQUE
+#  index_markets_on_bid_unit               (bid_unit)
+#  index_markets_on_enabled                (enabled)
+#  index_markets_on_position               (position)
+#
+
+# == AFTER ==
+# == Schema Information
+# Schema version: 20190624102330
+#
+# Table name: markets
+#
+#  id               :string(20)       not null, primary key
+#  base_unit        :string(10)       not null
+#  quote_unit       :string(10)       not null
+#  amount_precision :integer          default(4), not null
+#  price_precision  :integer          default(4), not null
+#  ask_fee          :decimal(17, 16)  default(0.0), not null
+#  bid_fee          :decimal(17, 16)  default(0.0), not null
+#  min_price        :decimal(32, 16)  default(0.0), not null
+#  max_price        :decimal(32, 16)  default(0.0), not null
+#  min_amount       :decimal(32, 16)  default(0.0), not null
+#  position         :integer          default(0), not null
+#  state            :string(32)       default("enabled"), not null
+#  created_at       :datetime         not null
+#  updated_at       :datetime         not null
+#
+# Indexes
+#
+#  index_markets_on_base_unit                 (base_unit)
+#  index_markets_on_base_unit_and_quote_unit  (base_unit,quote_unit) UNIQUE
+#  index_markets_on_position                  (position)
+#  index_markets_on_quote_unit                (quote_unit)
+#