Index: iknow-api/Migrations/20251209133847_InitalCreate.cs
===================================================================
--- iknow-api/Migrations/20251209133847_InitalCreate.cs	(revision 2d64b2e1e96d2ca623370d7fe5be29a09fe3f360)
+++ iknow-api/Migrations/20251209133847_InitalCreate.cs	(revision 2d64b2e1e96d2ca623370d7fe5be29a09fe3f360)
@@ -0,0 +1,518 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+#pragma warning disable CA1814 // Prefer jagged arrays over multidimensional
+
+namespace iknow_api.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitalCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Documents",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: true),
+                    Body = table.Column<string>(type: "text", nullable: true),
+                    Cost = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Documents", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Majors",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Majors", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Subjects",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: true),
+                    Code = table.Column<string>(type: "text", nullable: true),
+                    AwardedCredits = table.Column<int>(type: "integer", nullable: true),
+                    DependencyCredit = table.Column<int>(type: "integer", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Subjects", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "User",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: true),
+                    EMBG = table.Column<string>(type: "text", nullable: true),
+                    Surname = table.Column<string>(type: "text", nullable: true),
+                    Index = table.Column<string>(type: "text", nullable: true),
+                    Email = table.Column<string>(type: "text", nullable: true),
+                    PasswordHash = table.Column<string>(type: "text", nullable: true),
+                    MiddleName = table.Column<string>(type: "text", nullable: true),
+                    Gender = table.Column<string>(type: "text", nullable: true),
+                    Nationality = table.Column<string>(type: "text", nullable: true),
+                    Citizenship = table.Column<string>(type: "text", nullable: true),
+                    Bday = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    Role = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_User", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "DependencySubjects",
+                columns: table => new
+                {
+                    SubjectId = table.Column<int>(type: "integer", nullable: false),
+                    DependencyId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_DependencySubjects", x => new { x.SubjectId, x.DependencyId });
+                    table.ForeignKey(
+                        name: "FK_DependencySubjects_Subjects_DependencyId",
+                        column: x => x.DependencyId,
+                        principalTable: "Subjects",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_DependencySubjects_Subjects_SubjectId",
+                        column: x => x.SubjectId,
+                        principalTable: "Subjects",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "MajorSubjects",
+                columns: table => new
+                {
+                    MajorId = table.Column<int>(type: "integer", nullable: false),
+                    SubjectId = table.Column<int>(type: "integer", nullable: false),
+                    MandatorySemester = table.Column<int>(type: "integer", nullable: false),
+                    Accreditation = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_MajorSubjects", x => new { x.MajorId, x.SubjectId });
+                    table.ForeignKey(
+                        name: "FK_MajorSubjects_Majors_MajorId",
+                        column: x => x.MajorId,
+                        principalTable: "Majors",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_MajorSubjects_Subjects_SubjectId",
+                        column: x => x.SubjectId,
+                        principalTable: "Subjects",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ContactInfo",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    City = table.Column<string>(type: "text", nullable: true),
+                    Address = table.Column<string>(type: "text", nullable: true),
+                    Municipality = table.Column<string>(type: "text", nullable: true),
+                    PhoneNumber = table.Column<string>(type: "text", nullable: true),
+                    MicrosoftEmail = table.Column<string>(type: "text", nullable: true),
+                    UserId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ContactInfo", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ContactInfo_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "EnrolledSemesters",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    Year = table.Column<int>(type: "integer", nullable: false),
+                    Type = table.Column<int>(type: "integer", nullable: false),
+                    QuotaType = table.Column<int>(type: "integer", nullable: false),
+                    MajorId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_EnrolledSemesters", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_EnrolledSemesters_Majors_MajorId",
+                        column: x => x.MajorId,
+                        principalTable: "Majors",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_EnrolledSemesters_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "EnrollmentInfo",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    enrollmentYear = table.Column<int>(type: "integer", nullable: false),
+                    quota = table.Column<int>(type: "integer", nullable: false),
+                    MajorId = table.Column<int>(type: "integer", nullable: false),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    StudyType = table.Column<string>(type: "text", nullable: true),
+                    StudyStatus = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_EnrollmentInfo", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_EnrollmentInfo_Majors_MajorId",
+                        column: x => x.MajorId,
+                        principalTable: "Majors",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_EnrollmentInfo_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "HighSchool",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    GPA = table.Column<float>(type: "real", nullable: false),
+                    HighSchoolType = table.Column<int>(type: "integer", nullable: false),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    StudyLanguage = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_HighSchool", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_HighSchool_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "RefreshToken",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    Token = table.Column<string>(type: "text", nullable: true),
+                    ExpiresAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    IsValid = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_RefreshToken", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_RefreshToken_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "UserDocuments",
+                columns: table => new
+                {
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    DocumentId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_UserDocuments", x => new { x.UserId, x.DocumentId });
+                    table.ForeignKey(
+                        name: "FK_UserDocuments_Documents_DocumentId",
+                        column: x => x.DocumentId,
+                        principalTable: "Documents",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_UserDocuments_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Payment",
+                columns: table => new
+                {
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    EnrollmentInfoId = table.Column<int>(type: "integer", nullable: false),
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Payment", x => new { x.UserId, x.EnrollmentInfoId });
+                    table.ForeignKey(
+                        name: "FK_Payment_EnrolledSemesters_EnrollmentInfoId",
+                        column: x => x.EnrollmentInfoId,
+                        principalTable: "EnrolledSemesters",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Payment_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "SemesterSubject",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    EnrolledSemesterId = table.Column<int>(type: "integer", nullable: false),
+                    SubjectId = table.Column<int>(type: "integer", nullable: false),
+                    ProfessorId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SemesterSubject", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_SemesterSubject_EnrolledSemesters_EnrolledSemesterId",
+                        column: x => x.EnrolledSemesterId,
+                        principalTable: "EnrolledSemesters",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_SemesterSubject_Subjects_SubjectId",
+                        column: x => x.SubjectId,
+                        principalTable: "Subjects",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_SemesterSubject_User_ProfessorId",
+                        column: x => x.ProfessorId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_SemesterSubject_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PassedSubjects",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    SemesterSubjectId = table.Column<int>(type: "integer", nullable: false),
+                    Grade = table.Column<int>(type: "integer", nullable: false),
+                    DatePassed = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PassedSubjects", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PassedSubjects_SemesterSubject_SemesterSubjectId",
+                        column: x => x.SemesterSubjectId,
+                        principalTable: "SemesterSubject",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.InsertData(
+                table: "Majors",
+                columns: new[] { "Id", "Name" },
+                values: new object[,]
+                {
+                    { 1, "PIT" },
+                    { 2, "SIIS" },
+                    { 3, "SEIS" },
+                    { 4, "KN" }
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ContactInfo_UserId",
+                table: "ContactInfo",
+                column: "UserId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_DependencySubjects_DependencyId",
+                table: "DependencySubjects",
+                column: "DependencyId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_EnrolledSemesters_MajorId",
+                table: "EnrolledSemesters",
+                column: "MajorId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_EnrolledSemesters_UserId",
+                table: "EnrolledSemesters",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_EnrollmentInfo_MajorId",
+                table: "EnrollmentInfo",
+                column: "MajorId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_EnrollmentInfo_UserId",
+                table: "EnrollmentInfo",
+                column: "UserId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_HighSchool_UserId",
+                table: "HighSchool",
+                column: "UserId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_MajorSubjects_SubjectId",
+                table: "MajorSubjects",
+                column: "SubjectId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PassedSubjects_SemesterSubjectId",
+                table: "PassedSubjects",
+                column: "SemesterSubjectId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Payment_EnrollmentInfoId",
+                table: "Payment",
+                column: "EnrollmentInfoId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_RefreshToken_UserId",
+                table: "RefreshToken",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SemesterSubject_EnrolledSemesterId",
+                table: "SemesterSubject",
+                column: "EnrolledSemesterId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SemesterSubject_ProfessorId",
+                table: "SemesterSubject",
+                column: "ProfessorId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SemesterSubject_SubjectId",
+                table: "SemesterSubject",
+                column: "SubjectId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SemesterSubject_UserId",
+                table: "SemesterSubject",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_UserDocuments_DocumentId",
+                table: "UserDocuments",
+                column: "DocumentId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ContactInfo");
+
+            migrationBuilder.DropTable(
+                name: "DependencySubjects");
+
+            migrationBuilder.DropTable(
+                name: "EnrollmentInfo");
+
+            migrationBuilder.DropTable(
+                name: "HighSchool");
+
+            migrationBuilder.DropTable(
+                name: "MajorSubjects");
+
+            migrationBuilder.DropTable(
+                name: "PassedSubjects");
+
+            migrationBuilder.DropTable(
+                name: "Payment");
+
+            migrationBuilder.DropTable(
+                name: "RefreshToken");
+
+            migrationBuilder.DropTable(
+                name: "UserDocuments");
+
+            migrationBuilder.DropTable(
+                name: "SemesterSubject");
+
+            migrationBuilder.DropTable(
+                name: "Documents");
+
+            migrationBuilder.DropTable(
+                name: "EnrolledSemesters");
+
+            migrationBuilder.DropTable(
+                name: "Subjects");
+
+            migrationBuilder.DropTable(
+                name: "Majors");
+
+            migrationBuilder.DropTable(
+                name: "User");
+        }
+    }
+}