增加挑战混合题库的功能

src/api/controllers/exam.controller.ts

@@ -59,6 +59,19 @@ class ExamController extends BaseController {
         _results.push(_r.compactRecord(false))
       }
       results = _results
+    } else if (record.source === 3) {
+      const sysCount = ((record.qcount * record.qrate) / 100) | 0
+      let questions = await Puzzle.randomQuestions(params, sysCount)
+      let _results = transformRecord(questions)
+      for (let _r of questions) {
+        history.questions.set(_r.id, _r.compactRecord(true))
+      }
+      questions = await ShopPuzzle.randomQuestions(params, record.qcount - sysCount)
+      for (let _r of questions) {
+        history.questions.set(_r.id, _r.compactRecord(true))
+        _results.push(_r.compactRecord(false))
+      }
+      results = _results
     }
     let stat = new PuzzleStatusClass()
     stat.timeLast = now

src/models/shop/ShopExam.ts

@@ -145,10 +145,17 @@ export class ShopExamClass extends BaseModule {
    * 0: 系统题目
    * 1: 自定义
    * 2: 店铺自定义题库
+   * 3: 混合题库
    * @type {number}
    */
   @prop({ default: 0 })
   public source: number
+  /**
+   * 系统题库题目数量和自定义题库数量的比例
+   * @type {number}
+   */
+  @prop()
+  public qrate: number
 
   /**
    * 是否删除