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

@@ -18,6 +18,7 @@ public sealed class DevelopmentSqliteMigrator(
     private const string GraduationAuditsMigration = "20260724_10_graduation_audits";
     private const string DegreeAwardsMigration = "20260724_11_degree_awards";
     private const string GraduationClearanceMigration = "20260724_12_graduation_clearance";
+    private const string CourseCategoriesMigration = "20260724_13_course_categories";
 
     public async Task MigrateAsync(CancellationToken cancellationToken = default)
     {
@@ -90,6 +91,22 @@ public sealed class DevelopmentSqliteMigrator(
             GraduationClearanceMigration,
             GraduationClearanceStatements,
             cancellationToken);
+        var courseCategoryColumnExists = await db.Database
+            .SqlQueryRaw<int>(
+                """
+                SELECT COUNT(*) AS "Value"
+                FROM pragma_table_info('Courses')
+                WHERE name = 'CourseCategoryId'
+                """)
+            .AnyAsync(value => value > 0, cancellationToken);
+        await ApplyMigrationAsync(
+            CourseCategoriesMigration,
+            courseCategoryColumnExists
+                ? CourseCategoriesStatements.Where(
+                    statement => !statement.StartsWith(
+                        "ALTER TABLE", StringComparison.OrdinalIgnoreCase))
+                : CourseCategoriesStatements,
+            cancellationToken);
     }
 
     private async Task ApplyMigrationAsync(
@@ -767,4 +784,34 @@ public sealed class DevelopmentSqliteMigrator(
         """CREATE UNIQUE INDEX IF NOT EXISTS "IX_GraduationClearanceRecords_GraduationClearanceItemId_StudentId" ON "GraduationClearanceRecords" ("GraduationClearanceItemId", "StudentId");""",
         """CREATE INDEX IF NOT EXISTS "IX_GraduationClearanceRecords_StudentId_Status" ON "GraduationClearanceRecords" ("StudentId", "Status");"""
     ];
+
+    private static readonly string[] CourseCategoriesStatements =
+    [
+        """
+        CREATE TABLE IF NOT EXISTS "CourseCategories" (
+            "Id" TEXT NOT NULL CONSTRAINT "PK_CourseCategories" PRIMARY KEY,
+            "Code" TEXT NOT NULL,
+            "Name" TEXT NOT NULL,
+            "SortOrder" INTEGER NOT NULL,
+            "IsEnabled" INTEGER NOT NULL,
+            "CreatedAt" TEXT NOT NULL,
+            "UpdatedAt" TEXT NOT NULL
+        );
+        """,
+        """
+        CREATE UNIQUE INDEX IF NOT EXISTS "IX_CourseCategories_Code"
+            ON "CourseCategories" ("Code");
+        """,
+        """
+        CREATE INDEX IF NOT EXISTS "IX_CourseCategories_IsEnabled_SortOrder"
+            ON "CourseCategories" ("IsEnabled", "SortOrder");
+        """,
+        """
+        ALTER TABLE "Courses" ADD COLUMN "CourseCategoryId" TEXT NULL;
+        """,
+        """
+        CREATE INDEX IF NOT EXISTS "IX_Courses_CourseCategoryId"
+            ON "Courses" ("CourseCategoryId");
+        """
+    ];
 }