chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/link-modules/src/utils/generate-entity.ts

@@ -0,0 +1,117 @@
+import { JoinerRelationship, ModuleJoinerConfig } from "@medusajs/types"
+import {
+  SoftDeletableFilterKey,
+  mikroOrmSoftDeletableFilterOptions,
+  simpleHash,
+} from "@medusajs/utils"
+
+import { EntitySchema } from "@mikro-orm/core"
+import { composeTableName } from "./compose-link-name"
+
+function getClass(...properties) {
+  return class LinkModel {
+    constructor(...values) {
+      properties.forEach((name, idx) => {
+        this[name] = values[idx]
+      })
+    }
+  }
+}
+
+export function generateEntity(
+  joinerConfig: ModuleJoinerConfig,
+  primary: JoinerRelationship,
+  foreign: JoinerRelationship
+) {
+  const fieldNames = primary.foreignKey.split(",").concat(foreign.foreignKey)
+
+  const tableName =
+    joinerConfig.databaseConfig?.tableName ??
+    composeTableName(
+      primary.serviceName,
+      primary.foreignKey,
+      foreign.serviceName,
+      foreign.foreignKey
+    )
+
+  const fields = fieldNames.reduce((acc, curr) => {
+    acc[curr] = {
+      type: "string",
+      nullable: false,
+      primary: true,
+    }
+    return acc
+  }, {})
+
+  const extraFields = joinerConfig.databaseConfig?.extraFields ?? {}
+
+  for (const column in extraFields) {
+    fieldNames.push(column)
+
+    fields[column] = {
+      type: extraFields[column].type,
+      nullable: !!extraFields[column].nullable,
+      defaultRaw: extraFields[column].defaultValue,
+      ...(extraFields[column].options ?? {}),
+    }
+  }
+
+  const hashTableName = simpleHash(tableName)
+
+  return new EntitySchema({
+    class: getClass(
+      ...fieldNames.concat("created_at", "updated_at", "deleted_at")
+    ) as any,
+    tableName,
+    properties: {
+      id: {
+        type: "string",
+        nullable: false,
+      },
+      ...fields,
+      created_at: {
+        type: "Date",
+        nullable: false,
+        defaultRaw: "CURRENT_TIMESTAMP",
+      },
+      updated_at: {
+        type: "Date",
+        nullable: false,
+        defaultRaw: "CURRENT_TIMESTAMP",
+      },
+      deleted_at: { type: "Date", nullable: true },
+    },
+    filters: {
+      [SoftDeletableFilterKey]: mikroOrmSoftDeletableFilterOptions,
+    },
+    hooks: {
+      beforeUpdate: [
+        (args) => {
+          args.entity.updated_at = new Date()
+        },
+      ],
+    },
+    indexes: [
+      {
+        properties: ["id"],
+        name: "IDX_id_" + hashTableName,
+      },
+      {
+        properties: primary.foreignKey.split(","),
+        name:
+          "IDX_" +
+          primary.foreignKey.split(",").join("_") +
+          "_" +
+          hashTableName,
+      },
+      {
+        properties: foreign.foreignKey,
+        name: "IDX_" + foreign.foreignKey + "_" + hashTableName,
+      },
+      {
+        properties: ["deleted_at"],
+        name: "IDX_deleted_at_" + hashTableName,
+      },
+    ],
+  })
+}