Single armor rework start

module/applications/sheets-configs/activeEffectConfig.mjs

@@ -153,6 +153,10 @@ export default class DhActiveEffectConfig extends foundry.applications.sheets.Ac
                 minLength: 0
             });
         });
+
+        htmlElement
+            .querySelector('.armor-change-checkbox')
+            ?.addEventListener('change', this.armorChangeToggle.bind(this));
     }
 
     async _prepareContext(options) {
@@ -190,10 +194,17 @@ export default class DhActiveEffectConfig extends foundry.applications.sheets.Ac
                 break;
             case 'changes':
                 const fields = this.document.system.schema.fields.changes.element.fields;
+
+                const singleTypes = ['armor'];
                 const { base, ...typedChanges } = context.source.changes.reduce((acc, change, index) => {
                     const type = CONFIG.DH.GENERAL.baseActiveEffectModes[change.type] ? 'base' : change.type;
-                    if (!acc[type]) acc[type] = [];
-                    acc[type].push({ ...change, index });
+                    if (singleTypes.includes(type)) {
+                        acc[type] = { ...change, index };
+                    } else {
+                        if (!acc[type]) acc[type] = [];
+                        acc[type].push({ ...change, index });
+                    }
+
                     return acc;
                 }, {});
                 partContext.changes = await Promise.all(
@@ -206,14 +217,30 @@ export default class DhActiveEffectConfig extends foundry.applications.sheets.Ac
         return partContext;
     }
 
+    armorChangeToggle(event) {
+        if (event.target.checked) {
+            this.addArmorChange();
+        } else {
+            this.removeTypedChange(event.target.dataset.index);
+        }
+    }
+
     /* Could be generalised if needed later */
-    static #addTypedChange() {
+    addArmorChange() {
         const submitData = this._processFormData(null, this.form, new FormDataExtended(this.form));
         const changes = Object.values(submitData.system?.changes ?? {});
         changes.push(game.system.api.data.activeEffects.changeTypes.armor.getInitialValue());
         return this.submit({ updateData: { system: { changes } } });
     }
 
+    removeTypedChange(indexString) {
+        const submitData = this._processFormData(null, this.form, new FormDataExtended(this.form));
+        const changes = Object.values(submitData.system.changes);
+        const index = Number(indexString);
+        changes.splice(index, 1);
+        return this.submit({ updateData: { system: { changes } } });
+    }
+
     _prepareChangeContext(change, fields) {
         if (typeof change.value !== 'string') change.value = JSON.stringify(change.value);
         const defaultPriority = game.system.api.documents.DhActiveEffect.CHANGE_TYPES[change.type]?.defaultPriority;

module/data/activeEffect/baseEffect.mjs

@@ -89,6 +89,13 @@ export default class BaseEffect extends foundry.data.ActiveEffectTypeDataModel {
         return true;
     }
 
+    get armorData() {
+        const armorChange = this.changes.find(x => x.type === CONFIG.DH.GENERAL.activeEffectModes.armor.id);
+        if (!armorChange) return null;
+
+        return armorChange.armorData;
+    }
+
     static getDefaultObject() {
         return {
             name: 'New Effect',

module/data/activeEffect/changeTypes/armor.mjs

@@ -76,36 +76,27 @@ export default class Armor extends foundry.abstract.DataModel {
 
     /* Helpers */
 
-    get armorChange() {
-        if (this.changes.length !== 1)
-            throw new Error('Unexpected error. An armor effect should have a changes field of length 1.');
-
-        const actor = this.parent.actor?.type === 'character' ? this.parent.actor : null;
-        const changeData = this.changes[0];
-        const maxParse = actor ? itemAbleRollParse(changeData.max, actor, this.parent.parent) : null;
+    get armorData() {
+        const actor = this.parent.parent?.actor?.type === 'character' ? this.parent.parent.actor : null;
+        const maxParse = actor ? itemAbleRollParse(this.max, actor, this.parent.parent.parent) : null;
         const maxRoll = maxParse ? new Roll(maxParse).evaluateSync() : null;
         const maxEvaluated = maxRoll ? (maxRoll.isDeterministic ? maxRoll.total : null) : null;
 
         return {
-            ...changeData,
-            max: maxEvaluated ?? changeData.max
+            value: this.value,
+            max: maxEvaluated ?? this.max
         };
     }
 
-    get armorData() {
-        return { value: this.armorChange.value, max: this.armorChange.max };
-    }
-
     async updateArmorMax(newMax) {
-        const { effect, ...baseChange } = this.armorChange;
         const newChanges = [
-            {
-                ...baseChange,
-                max: newMax,
-                value: Math.min(this.armorChange.value, newMax)
-            }
+            ...this.parent.changes.map(change => ({
+                ...change,
+                value: change.type === 'armor' ? Math.min(this.parent.value, newMax) : change.value,
+                typeData: change.type === 'armor' ? { ...change.typeData, max: newMax } : change.typeData
+            }))
         ];
-        await this.parent.update({ 'system.changes': newChanges });
+        await this.parent.parent.update({ 'system.changes': newChanges });
     }
 
     static orderEffectsForAutoChange(armorEffects, increasing) {