From aba212e13062c43a1192ef885b05145ac1cc9fe7 Mon Sep 17 00:00:00 2001
From: David Gay <david@davidgay.org>
Date: Sun, 23 May 2021 17:06:34 -0400
Subject: Bazaar with buy orders, sell orders, and order cancellation

---
 app/models/bazaar_order.rb                      | 12 ++++++++++++
 app/models/character.rb                         | 14 ++++++++++----
 app/models/character_item.rb                    | 14 ++------------
 app/models/concerns/destroy_if_zero_quantity.rb | 18 ++++++++++++++++++
 4 files changed, 42 insertions(+), 16 deletions(-)
 create mode 100644 app/models/bazaar_order.rb
 create mode 100644 app/models/concerns/destroy_if_zero_quantity.rb

(limited to 'app/models')

diff --git a/app/models/bazaar_order.rb b/app/models/bazaar_order.rb
new file mode 100644
index 0000000..d36d520
--- /dev/null
+++ b/app/models/bazaar_order.rb
@@ -0,0 +1,12 @@
+class BazaarOrder < ApplicationRecord
+  include DestroyIfZeroQuantity
+
+  belongs_to :character
+  belongs_to :item
+
+  validates :price_each, :quantity,
+            numericality: { greater_than_or_equal_to: 0,
+                            less_than_or_equal_to: 2_000_000_000, only_integer: true }
+  validates :buy_order, inclusion: { in: [true, false] }
+
+end
diff --git a/app/models/character.rb b/app/models/character.rb
index bad2bb2..003f8af 100644
--- a/app/models/character.rb
+++ b/app/models/character.rb
@@ -11,6 +11,7 @@ class Character < ApplicationRecord
   has_many :items, through: :character_items
   has_many :character_skills
   has_many :chat_messages
+  has_many :bazaar_orders
   validates :name, presence: true
   validates_length_of :name, maximum: 15, message: "can't be longer than 15 characters"
   validates_uniqueness_of :name, message: "is already being used"
@@ -35,12 +36,17 @@ class Character < ApplicationRecord
   def wildscour_level; skill_level("wildscour"); end
   def worldcall_level; skill_level("worldcall"); end
 
+  def vestige
+    vestige = self.character_items.find_by(item: Item.find_by_gid("vestige"))
+    vestige ? vestige.quantity : 0
+  end
+
   def shift_item(item, amount)
     item = Item.find_by_gid(item) if item.is_a? String
     CharacterItem.transaction do
       ci = self.character_items.find_or_initialize_by(item: item)
-      ci.increment(:quantity, amount)
-      ci.save
+      ci.increment!(:quantity, amount)
+      ci.save!
     end
   end
 
@@ -71,7 +77,7 @@ class Character < ApplicationRecord
       open_slots = self.open_slots_for(item)
       raise EquipmentError unless open_slots.any?
       self.shift_item(item, -1)
-      self.equipment.create(item: item, slot: open_slots.first)
+      self.equipment.create!(item: item, slot: open_slots.first)
     end
   end
 
@@ -80,7 +86,7 @@ class Character < ApplicationRecord
       equipment = self.equipment.find_by(slot: slot)
       raise EquipmentError unless equipment
       item = equipment.item
-      equipment.destroy
+      equipment.destroy!
       self.shift_item(item, 1)
     end
   end
diff --git a/app/models/character_item.rb b/app/models/character_item.rb
index b54f799..6ee13ab 100644
--- a/app/models/character_item.rb
+++ b/app/models/character_item.rb
@@ -1,4 +1,6 @@
 class CharacterItem < ApplicationRecord
+  include DestroyIfZeroQuantity
+
   belongs_to :character
   belongs_to :item
   validates :quantity, presence: true
@@ -9,17 +11,5 @@ class CharacterItem < ApplicationRecord
     end
   end
 
-  after_save :destroy_if_zero_quantity
-
   scope :ordered_by_item_name, -> { includes(:item).order("items.name") }
-
-  private
-    def destroy_if_zero_quantity
-      if self.quantity == 0
-        destroy
-      elsif self.quantity < 0
-        # TODO: Can improve this (at the least, with reporting, later).
-        raise ItemQuantityError
-      end
-    end
 end
diff --git a/app/models/concerns/destroy_if_zero_quantity.rb b/app/models/concerns/destroy_if_zero_quantity.rb
new file mode 100644
index 0000000..6fdfb3e
--- /dev/null
+++ b/app/models/concerns/destroy_if_zero_quantity.rb
@@ -0,0 +1,18 @@
+module DestroyIfZeroQuantity
+  extend ActiveSupport::Concern
+
+  included do
+    after_save :destroy_if_zero_quantity
+  end
+
+  private
+    def destroy_if_zero_quantity
+      byebug
+      if self.quantity == 0
+        destroy
+      elsif self.quantity < 0
+        # TODO: Can improve this (at the least, with reporting, later).
+        raise ItemQuantityError
+      end
+    end
+end
-- 
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