From 38f3a39221869483e3468e9f4d8cab5450a70f89 Mon Sep 17 00:00:00 2001
From: David Gay <david@davidgay.org>
Date: Sat, 22 May 2021 15:39:16 -0400
Subject: Equiping and unequiping items

---
 app/controllers/characters/items_controller.rb | 21 ++++++++++++-
 app/errors/equipment_error.rb                  |  2 ++
 app/models/character.rb                        | 25 +++++++++++++++
 app/models/equipment.rb                        | 11 +++++++
 app/models/item.rb                             |  9 ++++++
 app/views/characters/items/index.html.erb      | 42 ++++++++++++++++++++------
 6 files changed, 99 insertions(+), 11 deletions(-)
 create mode 100644 app/errors/equipment_error.rb
 create mode 100644 app/models/equipment.rb

(limited to 'app')

diff --git a/app/controllers/characters/items_controller.rb b/app/controllers/characters/items_controller.rb
index e1a30f8..8df23c8 100644
--- a/app/controllers/characters/items_controller.rb
+++ b/app/controllers/characters/items_controller.rb
@@ -1,5 +1,24 @@
 class Characters::ItemsController < ApplicationController
   def index
-    @character_items = Character.find(params[:character_id]).character_items
+    @character = Character.find(params[:character_id])
+  end
+
+  def equip
+    @item = Item.find(params[:item_id])
+    current_char.equip(@item)
+    flash[:notice] = "Equipped #{@item.name}."
+  rescue EquipmentError
+    flash[:alert] = "Couldn't equip #{@item.name}."
+  ensure
+    redirect_to character_items_path(current_char)
+  end
+
+  def unequip
+    current_char.unequip(params[:slot].to_sym)
+    flash[:notice] = "Unequipped item."
+  rescue EquipmentError
+    flash[:alert] = "Couldn't unequip item."
+  ensure
+    redirect_to character_items_path(current_char)
   end
 end
diff --git a/app/errors/equipment_error.rb b/app/errors/equipment_error.rb
new file mode 100644
index 0000000..0d24e8a
--- /dev/null
+++ b/app/errors/equipment_error.rb
@@ -0,0 +1,2 @@
+class EquipmentError < StandardError
+end
diff --git a/app/models/character.rb b/app/models/character.rb
index 73d2c4b..59ed5ae 100644
--- a/app/models/character.rb
+++ b/app/models/character.rb
@@ -5,6 +5,7 @@ class Character < ApplicationRecord
   has_many :titles, through: :title_awards
   belongs_to :active_title, class_name: "Title", optional: true
   has_one :hearth
+  has_many :equipment
   has_many :character_items
   has_many :learned_activities
   has_many :items, through: :character_items
@@ -44,6 +45,30 @@ class Character < ApplicationRecord
     ci && ci.quantity >= quantity
   end
 
+  def open_slots_for(item)
+    full_slots = self.equipment.map { |e| e.slot }
+    item.equip_slots.reject { |slot| full_slots.include?(slot) }
+  end
+
+  def equip(item)
+    Character.transaction do
+      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)
+    end
+  end
+
+  def unequip(slot)
+    Character.transaction do
+      equipment = self.equipment.find_by(slot: slot)
+      raise EquipmentError unless equipment
+      item = equipment.item
+      equipment.destroy
+      self.shift_item(item, 1)
+    end
+  end
+
   def add_skill_xp(skill, amount)
     CharacterSkill.find_by(skill: skill).increment!(:xp, amount)
   end
diff --git a/app/models/equipment.rb b/app/models/equipment.rb
new file mode 100644
index 0000000..11030fd
--- /dev/null
+++ b/app/models/equipment.rb
@@ -0,0 +1,11 @@
+class Equipment < ApplicationRecord
+  belongs_to :character
+  belongs_to :item
+  enum slot: [:mainhand, :offhand, :head, :neck, :back, :torso, :grip,
+              :left_ring, :right_ring, :waist, :legs, :feet, :curio]
+  validates :slot, presence: true, uniqueness: { scope: :character }
+
+  def slot
+    self[:slot].to_sym
+  end
+end
diff --git a/app/models/item.rb b/app/models/item.rb
index d42460b..5e60f04 100644
--- a/app/models/item.rb
+++ b/app/models/item.rb
@@ -5,4 +5,13 @@ class Item < ApplicationRecord
                     :left_ring, :right_ring, :waist, :legs, :feet, :curio]
   validates :gid, :name, :description, presence: true
   validates :usable, inclusion: { in: [true, false] }
+
+  def equipment?
+    self.whatnot && self.whatnot[:equip_slots]&.any?
+  end
+
+  def equip_slots
+    return [] unless self.equipment?
+    self.whatnot[:equip_slots].map { |data| data.to_sym }
+  end
 end
diff --git a/app/views/characters/items/index.html.erb b/app/views/characters/items/index.html.erb
index e313f7e..a7c932d 100644
--- a/app/views/characters/items/index.html.erb
+++ b/app/views/characters/items/index.html.erb
@@ -1,23 +1,49 @@
-<h1 class="text-xl">Inventory</h1>
+<h1 class="text-3xl mb-4">Inventory</h1>
 
-<table class="table-auto">
+<h2 class="text-xl mb-4">Equipment</h2>
+
+<table class="table-auto mb-8">
+  <thead>
+  <tr>
+    <th class="table-header-padded">Slot</th>
+    <th class="table-header-padded">Item</th>
+    <th class="table-header-padded">Unequip</th>
+  </tr>
+  </thead>
+  <tbody>
+  <% @character.equipment.each do |eq| %>
+    <tr>
+      <td class="table-cell-padded"><%= eq.slot.to_s %></td>
+      <td class="table-cell-padded"><%= eq.item.name %></td>
+      <td class="table-cell-padded">
+        <%= button_to "Unequip", character_item_unequip_path(slot: eq.slot ) %>
+      </td>
+    </tr>
+  <% end %>
+  </tbody>
+</table>
+
+
+
+<h2 class="text-xl mb-4">Inventory</h2>
+
+<table class="table-auto mb-8">
   <thead>
   <tr>
     <th class="table-header-padded">Amount</th>
     <th class="table-header-padded">Item</th>
     <th class="table-header-padded">Equip</th>
     <th class="table-header-padded">Use</th>
-    <th class="table-header-padded">Destroy</th>
   </tr>
   </thead>
   <tbody>
-  <% @character_items.ordered_by_item_name.each do |ci| %>
+  <% @character.character_items.ordered_by_item_name.each do |ci| %>
     <tr>
       <td class="table-cell-padded text-right"><%= ci.quantity %></td>
       <td class="table-cell-padded"><%= ci.item.name %></td>
       <td class="table-cell-padded">
-        <% if ci.item.equip_slot %>
-          <%= link_to "[Equip]", "#" %>
+        <% if ci.item.equipment? %>
+          <%= button_to "Equip", character_item_equip_path(item_id: ci.item.id) %>
         <% end %>
       </td>
       <td class="table-cell-padded">
@@ -25,10 +51,6 @@
           <%= link_to "[Use]", "#" %>
         <% end %>
       </td>
-      <td class="table-cell-padded">
-        <%= link_to "[Destroy]", "#" %>
-        <%= link_to "[Destroy All]", "#" %>
-      </td>
     </tr>
   <% end %>
   </tbody>
-- 
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