feat: refactor folder structure (#4498)

* feat: wip refactor folder structure

* Fix

* fix position

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine-metadata/workspace-migration/workspace-migration.entity.ts

@@ -0,0 +1,97 @@
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  PrimaryGeneratedColumn,
+} from 'typeorm';
+
+import { RelationOnDeleteAction } from 'src/engine-metadata/relation-metadata/relation-metadata.entity';
+
+export enum WorkspaceMigrationColumnActionType {
+  CREATE = 'CREATE',
+  ALTER = 'ALTER',
+  CREATE_FOREIGN_KEY = 'CREATE_FOREIGN_KEY',
+  DROP_FOREIGN_KEY = 'DROP_FOREIGN_KEY',
+  DROP = 'DROP',
+}
+
+export type WorkspaceMigrationEnum = string | { from: string; to: string };
+
+export interface WorkspaceMigrationColumnDefinition {
+  columnName: string;
+  columnType: string;
+  enum?: WorkspaceMigrationEnum[];
+  isArray?: boolean;
+  isNullable?: boolean;
+  defaultValue?: any;
+}
+
+export interface WorkspaceMigrationColumnCreate
+  extends WorkspaceMigrationColumnDefinition {
+  action: WorkspaceMigrationColumnActionType.CREATE;
+}
+
+export type WorkspaceMigrationColumnAlter = {
+  action: WorkspaceMigrationColumnActionType.ALTER;
+  currentColumnDefinition: WorkspaceMigrationColumnDefinition;
+  alteredColumnDefinition: WorkspaceMigrationColumnDefinition;
+};
+
+export type WorkspaceMigrationColumnCreateRelation = {
+  action: WorkspaceMigrationColumnActionType.CREATE_FOREIGN_KEY;
+  columnName: string;
+  referencedTableName: string;
+  referencedTableColumnName: string;
+  isUnique?: boolean;
+  onDelete?: RelationOnDeleteAction;
+};
+
+export type WorkspaceMigrationColumnDropRelation = {
+  action: WorkspaceMigrationColumnActionType.DROP_FOREIGN_KEY;
+  columnName: string;
+};
+
+export type WorkspaceMigrationColumnDrop = {
+  action: WorkspaceMigrationColumnActionType.DROP;
+  columnName: string;
+};
+
+export type WorkspaceMigrationColumnAction = {
+  action: WorkspaceMigrationColumnActionType;
+} & (
+  | WorkspaceMigrationColumnCreate
+  | WorkspaceMigrationColumnAlter
+  | WorkspaceMigrationColumnCreateRelation
+  | WorkspaceMigrationColumnDropRelation
+  | WorkspaceMigrationColumnDrop
+);
+
+export type WorkspaceMigrationTableAction = {
+  name: string;
+  action: 'create' | 'alter' | 'drop';
+  columns?: WorkspaceMigrationColumnAction[];
+};
+
+@Entity('workspaceMigration')
+export class WorkspaceMigrationEntity {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column({ nullable: true, type: 'jsonb' })
+  migrations: WorkspaceMigrationTableAction[];
+
+  @Column({ nullable: false })
+  name: string;
+
+  @Column({ default: false })
+  isCustom: boolean;
+
+  @Column({ nullable: true })
+  appliedAt?: Date;
+
+  @Column({ nullable: false, type: 'uuid' })
+  workspaceId: string;
+
+  @CreateDateColumn()
+  createdAt: Date;
+}