1

server/web3helper/metadata/Item.js

@@ -1,8 +1,45 @@
 const utils = require('j7/utils');
+const bcutils = require('j7/bcutils');
 const basewrap = require('./basewrap');
 
+const HERO_TYPE = 3;
+const GUN_TYPE = 7;
+const MATERIAL_TYPE = 10;
+
+const MATERIAL_CHIP_SUBTYPE = 3;
+
 class Item extends basewrap.BaseWrap {
 
+  getNftType() {
+    switch (this['type']) {
+    case HERO_TYPE:
+      {
+        return bcutils.HERO_TYPE;
+      }
+      break;
+    case GUN_TYPE:
+      {
+        return bcutils.EQUIP_TYPE;
+      }
+      break;
+    case MATERIAL_TYPE:
+      {
+        if (this['sub_type'] == MATERIAL_CHIP_SUBTYPE) {
+          return bcutils.CHIP_TYPE;
+        } else {
+          return bcutils.NONE_TYPE;
+        }
+      }
+      break;
+    default:
+      {
+        return bcutils.NONE_TYPE;
+      }
+      break;
+    }
+    return bcutils.NONE_TYPE;
+  }
+
 }
 
 module.exports = Item;

server/web3helper/metadata/Present.js

@@ -1,24 +1,54 @@
 const utils = require('j7/utils');
 const bcutils = require('j7/bcutils');
 const basewrap = require('./basewrap');
+const metaFactory = require('./factory');
 
 class Present extends basewrap.BaseWrap {
 
+  _init0 () {
+    const items = this['items'].split('|');
+    let totalSpace = 0;
+    this._items = [];
+    items.forEach((tmpStr) => {
+      const item = tmpStr.split(':');
+      totalSpace += item[1];
+      const itemMeta = metaFactory.getMetaByKey('Item', item[0]);
+      if (!itemMeta) {
+        throw 'itemMeta is null' + this;
+      }
+      const nftType = itemMeta.getNftType();
+      if (nftType == bcutils.NONE_TYPE) {
+        throw 'itemMeta nft type is null' + this;
+      }
+      this._items.push({
+        'space': totalSpace,
+        'itemId': item[0],
+        'tokenType': nftType
+      });
+    });
+    if (!(totalSpace > 0)) {
+      throw 'total not > 0' + this
+    }
+    this._totalSpace = totalSpace;
+  }
+
   randItem() {
-    let item = null;
-    item = {
-      itemId: 3100,
-      tokenType: bcutils.HERO_TYPE
-    };
-    return item;
+    const rand = utils.randRange(0, this._totalSpace);
+    for (let i in this._items) {
+      const item = this_items[i];
+      if (rand >= item['space']) {
+        return item;
+      }
+    }
+    return null;
   }
 
   getCount() {
-    return 1;
+    return this['quantity'];
   }
 
   getTags() {
-    return '1';
+    return this['tags'];
   }
 
 }