Seperated api module to submodules

src/modules/api/submodules/ranklist.ts

@@ -0,0 +1,104 @@
+import logger from '../../../utils/logger'
+import utils from '../../../utils/utils'
+import { Request, SubmoduleData, User } from '../../../types/basicTypes'
+
+const idStatFile = 'stats/idstats'
+const idvStatFile = 'stats/idvstats'
+
+function mergeObjSum(a, b) {
+  const res = { ...b }
+  Object.keys(a).forEach((key) => {
+    if (res[key]) {
+      res[key] += a[key]
+    } else {
+      res[key] = a[key]
+    }
+  })
+
+  return res
+}
+
+function setup(data: SubmoduleData): void {
+  const { app /* userDB, url, publicdirs, moduleSpecificData */ } = data
+
+  app.get('/ranklist', (req: Request, res: any) => {
+    logger.LogReq(req)
+    let result
+    const querySince: any = req.query.since
+    const user: User = req.session.user
+
+    if (!querySince) {
+      result = utils.ReadJSON(idStatFile)
+    } else {
+      try {
+        const since = new Date(querySince)
+        if (!(since instanceof Date) || isNaN(since.getTime())) {
+          throw new Error('Not a date')
+        }
+        const data = utils.ReadJSON(idvStatFile)
+        result = {}
+
+        Object.keys(data).forEach((key) => {
+          const dailyStat = data[key]
+
+          if (new Date(key) > since) {
+            Object.keys(dailyStat).forEach((userId) => {
+              const userStat = dailyStat[userId]
+              const uidRes = result[userId]
+
+              if (!uidRes) {
+                result[userId] = userStat
+              } else {
+                result[userId] = {
+                  count: uidRes.count + userStat.count,
+                  newQuestions: uidRes.newQuestions + userStat.newQuestions,
+                  allQuestions: uidRes.allQuestions + userStat.allQuestions,
+                  subjs: mergeObjSum(uidRes.subjs, userStat.subjs),
+                }
+              }
+            })
+          }
+        })
+      } catch (err) {
+        res.json({
+          msg: 'invalid date format, or other error occured',
+        })
+      }
+    }
+
+    const list = []
+    const sum = {
+      count: 0,
+      newQuestions: 0,
+      allQuestions: 0,
+    }
+    Object.keys(result).forEach((key) => {
+      list.push({
+        userId: parseInt(key),
+        ...result[key],
+      })
+
+      sum.count = sum.count + result[key].count
+      sum.newQuestions = sum.newQuestions + result[key].newQuestions
+      sum.allQuestions = sum.allQuestions + result[key].allQuestions
+    })
+
+    if (list.length === 0) {
+      res.json({
+        msg: 'There are no users in the stats db :c',
+      })
+      return
+    }
+
+    res.json({
+      since: querySince,
+      sum: sum,
+      list: list,
+      selfuserId: user.id,
+    })
+  })
+}
+
+export default {
+  setup: setup,
+}