From 0fac92a969f8f3049a55a824c1af65255c9d1654 Mon Sep 17 00:00:00 2001
From: David Gay <david@davidgay.org>
Date: Mon, 31 May 2021 13:33:13 -0400
Subject: Plug in equip requirements

---
 app/controllers/characters/items_controller.rb |  7 ++++++-
 app/models/character.rb                        | 13 +++++++++++++
 app/models/item.rb                             | 13 +++++++++++++
 3 files changed, 32 insertions(+), 1 deletion(-)

(limited to 'app')

diff --git a/app/controllers/characters/items_controller.rb b/app/controllers/characters/items_controller.rb
index 722c8ff..470e21c 100644
--- a/app/controllers/characters/items_controller.rb
+++ b/app/controllers/characters/items_controller.rb
@@ -5,10 +5,15 @@ class Characters::ItemsController < ApplicationController
 
   def equip
     @item = Item.find(params[:item_id])
+    unless current_char.can_equip? @item
+      flash[:alert] = "Couldn't equip #{@item.name}"
+      flash[:alert] += " (requires #{@item.equip_requirements&.join(", ")})" if @item.equip_requirements.any?
+      return
+    end
     current_char.equip(@item)
     flash[:notice] = "Equipped #{@item.name}."
   rescue EquipmentError
-    flash[:alert] = "Couldn't equip #{@item.name}."
+    flash[:alert] = "Couldn't equip #{@item.name}. Make sure the slot is free."
   ensure
     redirect_to character_items_path(current_char)
   end
diff --git a/app/models/character.rb b/app/models/character.rb
index 7e80d65..56be0c0 100644
--- a/app/models/character.rb
+++ b/app/models/character.rb
@@ -133,8 +133,21 @@ class Character < ApplicationRecord
     end
   end
 
+  def can_equip?(item)
+    item.whatnot[:equip_requirements]&.each do |requirement|
+      case requirement[:type]
+      when "skill"
+        return false unless self.skill_level(requirement[:gid]) >= requirement[:level]
+      else
+        raise "Invalid requirement type string (#{requirement[:type]})"
+      end
+    end
+    true
+  end
+
   def equip(item)
     Character.transaction do
+      raise EquipmentError unless self.can_equip?(item)
       open_slots = self.open_slots_for(item)
       raise EquipmentError unless open_slots.any?
       self.shift_item(item, -1)
diff --git a/app/models/item.rb b/app/models/item.rb
index 1ef5d7d..8b80788 100644
--- a/app/models/item.rb
+++ b/app/models/item.rb
@@ -17,4 +17,17 @@ class Item < ApplicationRecord
     return [] unless self.equipment?
     self.whatnot[:equip_slots].map { |data| data.to_sym }
   end
+
+  def equip_requirements
+    requirements = []
+    self.whatnot[:equip_requirements]&.each do |req|
+      case req[:type]
+      when "skill"
+        requirements.push "level #{req[:level]} #{Skill.find_by_gid(req[:gid]).name}"
+      else
+        raise "Invalid equip requirement type string (#{req[:type]})"
+      end
+    end
+    requirements
+  end
 end
-- 
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