统计面板继续迭代

api/models/examTask.ts

@@ -55,6 +55,54 @@ export interface ActiveTaskStat {
 }
 
 export class ExamTaskModel {
+  private static buildActiveTaskStat(input: {
+    taskId: string;
+    taskName: string;
+    subjectName: string;
+    totalScore: number;
+    startAt: string;
+    endAt: string;
+    report: TaskReport;
+  }): ActiveTaskStat {
+    const { report } = input;
+
+    const completionRate =
+      report.totalUsers > 0
+        ? Math.round((report.completedUsers / report.totalUsers) * 100)
+        : 0;
+
+    const passingUsers = report.details.filter((d) => {
+      if (d.score === null) return false;
+      return d.score / input.totalScore >= 0.6;
+    }).length;
+
+    const passRate =
+      report.totalUsers > 0 ? Math.round((passingUsers / report.totalUsers) * 100) : 0;
+
+    const excellentUsers = report.details.filter((d) => {
+      if (d.score === null) return false;
+      return d.score / input.totalScore >= 0.8;
+    }).length;
+
+    const excellentRate =
+      report.totalUsers > 0
+        ? Math.round((excellentUsers / report.totalUsers) * 100)
+        : 0;
+
+    return {
+      taskId: input.taskId,
+      taskName: input.taskName,
+      subjectName: input.subjectName,
+      totalUsers: report.totalUsers,
+      completedUsers: report.completedUsers,
+      completionRate,
+      passRate,
+      excellentRate,
+      startAt: input.startAt,
+      endAt: input.endAt,
+    };
+  }
+
   static async findAll(): Promise<(TaskWithSubject & {
     completedUsers: number;
     passRate: number;
@@ -178,6 +226,98 @@ export class ExamTaskModel {
     return stats;
   }
 
+  static async getHistoryTasksWithStatsPaged(
+    page: number,
+    limit: number,
+  ): Promise<{ data: ActiveTaskStat[]; total: number }> {
+    const now = new Date().toISOString();
+    const offset = (page - 1) * limit;
+
+    const totalRow = await get(
+      `SELECT COUNT(*) as total FROM exam_tasks t WHERE t.end_at < ?`,
+      [now],
+    );
+    const total = Number(totalRow?.total || 0);
+
+    const tasks = await all(
+      `
+      SELECT 
+        t.id, t.name as taskName, s.name as subjectName, s.total_score as totalScore,
+        t.start_at as startAt, t.end_at as endAt
+      FROM exam_tasks t
+      JOIN exam_subjects s ON t.subject_id = s.id
+      WHERE t.end_at < ?
+      ORDER BY t.end_at DESC
+      LIMIT ? OFFSET ?
+    `,
+      [now, limit, offset],
+    );
+
+    const data: ActiveTaskStat[] = [];
+    for (const task of tasks) {
+      const report = await this.getReport(task.id);
+      data.push(
+        this.buildActiveTaskStat({
+          taskId: task.id,
+          taskName: task.taskName,
+          subjectName: task.subjectName,
+          totalScore: Number(task.totalScore) || 0,
+          startAt: task.startAt,
+          endAt: task.endAt,
+          report,
+        }),
+      );
+    }
+
+    return { data, total };
+  }
+
+  static async getUpcomingTasksWithStatsPaged(
+    page: number,
+    limit: number,
+  ): Promise<{ data: ActiveTaskStat[]; total: number }> {
+    const now = new Date().toISOString();
+    const offset = (page - 1) * limit;
+
+    const totalRow = await get(
+      `SELECT COUNT(*) as total FROM exam_tasks t WHERE t.start_at > ?`,
+      [now],
+    );
+    const total = Number(totalRow?.total || 0);
+
+    const tasks = await all(
+      `
+      SELECT 
+        t.id, t.name as taskName, s.name as subjectName, s.total_score as totalScore,
+        t.start_at as startAt, t.end_at as endAt
+      FROM exam_tasks t
+      JOIN exam_subjects s ON t.subject_id = s.id
+      WHERE t.start_at > ?
+      ORDER BY t.start_at ASC
+      LIMIT ? OFFSET ?
+    `,
+      [now, limit, offset],
+    );
+
+    const data: ActiveTaskStat[] = [];
+    for (const task of tasks) {
+      const report = await this.getReport(task.id);
+      data.push(
+        this.buildActiveTaskStat({
+          taskId: task.id,
+          taskName: task.taskName,
+          subjectName: task.subjectName,
+          totalScore: Number(task.totalScore) || 0,
+          startAt: task.startAt,
+          endAt: task.endAt,
+          report,
+        }),
+      );
+    }
+
+    return { data, total };
+  }
+
   static async findById(id: string): Promise<ExamTask | null> {
     const sql = `SELECT id, name, subject_id as subjectId, start_at as startAt, end_at as endAt, created_at as createdAt, selection_config as selectionConfig FROM exam_tasks WHERE id = ?`;
     const row = await get(sql, [id]);
@@ -505,4 +645,4 @@ export class ExamTaskModel {
       timeLimitMinutes: row.timeLimitMinutes
     }));
   }
-}
+}