feat: add platform public question bank workspace

Tiku.Infrastructure/Persistence/Migrations/20260730034205_AddPlatformQuestionBankWorkspace.cs

@@ -0,0 +1,80 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Tiku.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPlatformQuestionBankWorkspace : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<Guid>(
+                name: "content_entry_id",
+                table: "question_banks",
+                type: "uuid",
+                nullable: true);
+
+            migrationBuilder.Sql("""
+                INSERT INTO content_entries (
+                    id, tenant_id, entry_key, name, entry_type, visibility,
+                    access_rules, layout_config, sort_order, is_active, created_at, updated_at)
+                SELECT
+                    qb.id,
+                    qb.tenant_id,
+                    'public-question-bank-' || replace(qb.id::text, '-', ''),
+                    qb.name,
+                    'question_practice',
+                    'public',
+                    '{}'::jsonb,
+                    '{}'::jsonb,
+                    0,
+                    true,
+                    qb.created_at,
+                    qb.updated_at
+                FROM question_banks qb
+                JOIN tenants t ON t.id = qb.tenant_id AND t.mode = 'platform_owned'
+                WHERE NOT EXISTS (SELECT 1 FROM content_entries ce WHERE ce.id = qb.id);
+
+                UPDATE question_banks qb
+                SET content_entry_id = qb.id
+                FROM tenants t
+                WHERE t.id = qb.tenant_id
+                  AND t.mode = 'platform_owned'
+                  AND qb.content_entry_id IS NULL
+                  AND EXISTS (SELECT 1 FROM content_entries ce WHERE ce.tenant_id = qb.tenant_id AND ce.id = qb.id);
+                """);
+
+            migrationBuilder.CreateIndex(
+                name: "ix_question_banks_tenant_id_content_entry_id",
+                table: "question_banks",
+                columns: new[] { "tenant_id", "content_entry_id" });
+
+            migrationBuilder.AddForeignKey(
+                name: "fk_question_banks_content_entries_tenant_id_content_entry_id",
+                table: "question_banks",
+                columns: new[] { "tenant_id", "content_entry_id" },
+                principalTable: "content_entries",
+                principalColumns: new[] { "tenant_id", "id" },
+                onDelete: ReferentialAction.Restrict);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "fk_question_banks_content_entries_tenant_id_content_entry_id",
+                table: "question_banks");
+
+            migrationBuilder.DropIndex(
+                name: "ix_question_banks_tenant_id_content_entry_id",
+                table: "question_banks");
+
+            migrationBuilder.DropColumn(
+                name: "content_entry_id",
+                table: "question_banks");
+        }
+    }
+}