From 95521aebfe446fa80e2f178a02e0fa82ada266a9 Mon Sep 17 00:00:00 2001
From: U~man <ewolfwood@yandex.com>
Date: Sun, 5 Jul 2020 23:32:51 +0200
Subject: [PATCH] ENH: Damage context

---
 src/module/actor/entity.js | 13 +++++++++++
 src/module/chat.js         | 47 ++++++++++++++++++++++++++++++++++++++
 src/ose.js                 |  5 ++--
 3 files changed, 63 insertions(+), 2 deletions(-)
 create mode 100644 src/module/chat.js

diff --git a/src/module/actor/entity.js b/src/module/actor/entity.js
index 775bd2b..cbe9c96 100644
--- a/src/module/actor/entity.js
+++ b/src/module/actor/entity.js
@@ -298,6 +298,19 @@ export class OseActor extends Actor {
     });
   }
 
+  async applyDamage(amount=0, multiplier=1) {
+    amount = Math.floor(parseInt(amount) * multiplier);
+    const hp = this.data.data.hp;
+
+    // Remaining goes to health
+    const dh = Math.clamped(hp.value - amount, 0, hp.max);
+
+    // Update the Actor
+    return this.update({
+      "data.hp.value": dh
+    });
+  }
+
   static _valueToMod(val) {
     switch (val) {
       case 3:
diff --git a/src/module/chat.js b/src/module/chat.js
new file mode 100644
index 0000000..47b7288
--- /dev/null
+++ b/src/module/chat.js
@@ -0,0 +1,47 @@
+/**
+ * This function is used to hook into the Chat Log context menu to add additional options to each message
+ * These options make it easy to conveniently apply damage to controlled tokens based on the value of a Roll
+ *
+ * @param {HTMLElement} html    The Chat Message being rendered
+ * @param {Array} options       The Array of Context Menu options
+ *
+ * @return {Array}              The extended options Array including new context choices
+ */
+export const addChatMessageContextOptions = function(html, options) {
+  let canApply = li => canvas.tokens.controlled.length && li.find(".dice-roll").length;
+  options.push(
+    {
+      name: game.i18n.localize("OSE.ChatContextDamage"),
+      icon: '<i class="fas fa-user-minus"></i>',
+      condition: canApply,
+      callback: li => applyChatCardDamage(li, 1)
+    },
+    {
+      name: game.i18n.localize("OSE.ChatContextHealing"),
+      icon: '<i class="fas fa-user-plus"></i>',
+      condition: canApply,
+      callback: li => applyChatCardDamage(li, -1)
+    }
+  );
+  return options;
+};
+
+/* -------------------------------------------- */
+
+/**
+ * Apply rolled dice damage to the token or tokens which are currently controlled.
+ * This allows for damage to be scaled by a multiplier to account for healing, critical hits, or resistance
+ *
+ * @param {HTMLElement} roll    The chat entry which contains the roll data
+ * @param {Number} multiplier   A damage multiplier to apply to the rolled damage.
+ * @return {Promise}
+ */
+function applyChatCardDamage(roll, multiplier) {
+  const amount = roll.find('.dice-total').last().text();
+  return Promise.all(canvas.tokens.controlled.map(t => {
+    const a = t.actor;
+    return a.applyDamage(amount, multiplier);
+  }));
+}
+
+/* -------------------------------------------- */
diff --git a/src/ose.js b/src/ose.js
index 664ee2a..632448a 100644
--- a/src/ose.js
+++ b/src/ose.js
@@ -8,6 +8,7 @@ import { OseItem } from "./module/item/entity.js";
 import { OSE } from "./module/config.js";
 import { registerSettings } from './module/settings.js';
 import { registerHelpers } from './module/helpers.js';
+import * as chat from "./module/chat.js";
 
 /* -------------------------------------------- */
 /*  Foundry VTT Initialization                  */
@@ -64,5 +65,5 @@ Hooks.once("setup", function () {
   }
 });
 
-
-Hooks.on("renderChatLog", (app, html, data) => OseItem.chatListeners(html));
\ No newline at end of file
+Hooks.on("renderChatLog", (app, html, data) => OseItem.chatListeners(html));
+Hooks.on("getChatLogEntryContext", chat.addChatMessageContextOptions);
\ No newline at end of file