优化排课

src/Jiaowu.Api/Infrastructure/Persistence/DevelopmentSqliteMigrator.cs

@@ -21,6 +21,8 @@ public sealed class DevelopmentSqliteMigrator(
     private const string CourseCategoriesMigration = "20260724_13_course_categories";
     private const string SchedulingOptimizationMigration =
         "20260724_14_scheduling_optimization";
+    private const string TeacherCourseApplicationsMigration =
+        "20260724_15_teacher_course_applications";
 
     public async Task MigrateAsync(CancellationToken cancellationToken = default)
     {
@@ -121,6 +123,18 @@ public sealed class DevelopmentSqliteMigrator(
             SchedulingOptimizationMigration,
             schedulingOptimizationExists ? [] : SchedulingOptimizationStatements,
             cancellationToken);
+        var teacherCourseApplicationsExist = await db.Database
+            .SqlQueryRaw<int>(
+                """
+                SELECT COUNT(*) AS "Value"
+                FROM sqlite_master
+                WHERE type = 'table' AND name = 'TeacherCourseApplications'
+                """)
+            .AnyAsync(value => value > 0, cancellationToken);
+        await ApplyMigrationAsync(
+            TeacherCourseApplicationsMigration,
+            teacherCourseApplicationsExist ? [] : TeacherCourseApplicationStatements,
+            cancellationToken);
     }
 
     private async Task ApplyMigrationAsync(
@@ -953,4 +967,59 @@ public sealed class DevelopmentSqliteMigrator(
             ON "TeachingTaskAllowedClassrooms" ("ClassroomId");
         """
     ];
+
+    private static readonly string[] TeacherCourseApplicationStatements =
+    [
+        """
+        ALTER TABLE "TeachingTasks" ADD COLUMN "GenerationBatchCode" TEXT NULL;
+        """,
+        """
+        CREATE TABLE "TeacherCourseApplications" (
+            "Id" TEXT NOT NULL CONSTRAINT "PK_TeacherCourseApplications" PRIMARY KEY,
+            "AcademicTermId" TEXT NOT NULL,
+            "TeacherId" TEXT NOT NULL,
+            "CourseId" TEXT NOT NULL,
+            "Status" INTEGER NOT NULL,
+            "Statement" TEXT NULL,
+            "ReviewComment" TEXT NULL,
+            "SubmittedAt" TEXT NOT NULL,
+            "ReviewedAt" TEXT NULL,
+            "ReviewedByUserId" TEXT NULL,
+            "CreatedAt" TEXT NOT NULL,
+            "UpdatedAt" TEXT NOT NULL,
+            CONSTRAINT "FK_TeacherCourseApplications_AcademicTerms"
+                FOREIGN KEY ("AcademicTermId") REFERENCES "AcademicTerms" ("Id")
+                ON DELETE RESTRICT,
+            CONSTRAINT "FK_TeacherCourseApplications_Teachers"
+                FOREIGN KEY ("TeacherId") REFERENCES "Teachers" ("Id")
+                ON DELETE CASCADE,
+            CONSTRAINT "FK_TeacherCourseApplications_Courses"
+                FOREIGN KEY ("CourseId") REFERENCES "Courses" ("Id")
+                ON DELETE RESTRICT,
+            CONSTRAINT "FK_TeacherCourseApplications_ReviewedBy"
+                FOREIGN KEY ("ReviewedByUserId") REFERENCES "AspNetUsers" ("Id")
+                ON DELETE SET NULL
+        );
+        """,
+        """
+        CREATE UNIQUE INDEX "IX_TeacherCourseApplications_Term_Teacher_Course"
+            ON "TeacherCourseApplications" ("AcademicTermId", "TeacherId", "CourseId");
+        """,
+        """
+        CREATE INDEX "IX_TeacherCourseApplications_Status_AcademicTermId"
+            ON "TeacherCourseApplications" ("Status", "AcademicTermId");
+        """,
+        """
+        CREATE INDEX "IX_TeacherCourseApplications_TeacherId"
+            ON "TeacherCourseApplications" ("TeacherId");
+        """,
+        """
+        CREATE INDEX "IX_TeacherCourseApplications_CourseId"
+            ON "TeacherCourseApplications" ("CourseId");
+        """,
+        """
+        CREATE INDEX "IX_TeacherCourseApplications_ReviewedByUserId"
+            ON "TeacherCourseApplications" ("ReviewedByUserId");
+        """
+    ];
 }