feat: gacha

lib/gacha.js

@@ -127,3 +127,104 @@ export async function updateGachaLog(authKey, uid) {
   saveGachaLog(uid, previousLog);
   return previousLog;
 }
+
+const RANK_MAP = {
+  4: 'S',
+  3: 'A',
+  2: 'B',
+};
+const HOMO_TAG = ['非到极致', '运气不好', '平稳保底', '小欧一把', '欧狗在此'];
+const NORMAL_LIST = [
+  '「11号」',
+  '猫又',
+  '莱卡恩',
+  '丽娜',
+  '格莉丝',
+  '珂蕾妲',
+  '拘缚者',
+  '燃狱齿轮',
+  '嵌合编译器',
+  '钢铁肉垫',
+  '硫磺石',
+  '啜泣摇篮',
+];
+
+export async function anaylizeGachaLog(uid) {
+  const savedData = getGachaLog(uid);
+  if (!savedData) {
+    return null;
+  }
+  const result = [];
+  for (const name in savedData) {
+    const data = savedData[name].map(
+      item =>
+        new SingleGachaLog(
+          item.uid,
+          item.gacha_id,
+          item.gacha_type,
+          item.item_id,
+          item.count,
+          item.time,
+          item.name,
+          item.lang,
+          item.item_type,
+          item.rank_type,
+          item.id
+        )
+    );
+    const earliest = data[data.length - 1];
+    const latest = data[0];
+    const list = [];
+    let lastFive = `${data.length}`;
+    let preIndex = 0;
+    let luck = 0;
+    data.forEach((item, i) => {
+      let isUp = true;
+      if (item.rank_type === '4') {
+        if (NORMAL_LIST.includes(item.name)) {
+          isUp = false;
+        }
+        if (lastFive === `${data.length}`) {
+          lastFive = `${i + 1}`;
+        }
+        list.push({
+          ...item,
+          rank_type_label: RANK_MAP[item.rank_type],
+          isUp: isUp,
+        });
+        if (list.length > 0) {
+          list[list.length - 1]['totalCount'] = i - preIndex;
+        }
+        preIndex = i;
+      }
+      if (i === data.length - 1 && list.length > 0) {
+        list[list.length - 1]['totalCount'] = i - preIndex;
+      }
+    });
+    const upCount = list.length;
+    const totalCount = data.length;
+    const fiveStars = list.length;
+    logger.mark('fiveStars', fiveStars);
+    logger.mark('totalCount', totalCount);
+    let timeRange = '还没有抽卡';
+    let avgFive = '-';
+    let avgUp = '-';
+    if (data.length > 0) {
+      timeRange = `${latest.time} ～ ${earliest.time}`;
+      if (fiveStars > 0) avgFive = (totalCount / fiveStars).toFixed(1);
+      if (upCount > 0) avgUp = (totalCount / upCount).toFixed(1);
+    }
+    result.push({
+      name,
+      timeRange,
+      list,
+      lastFive,
+      fiveStars,
+      upCount,
+      totalCount,
+      avgFive,
+      avgUp,
+    });
+  }
+  return result;
+}