Initial commit: PC Builder AdonisJS project

app/services/component_service.ts

@@ -0,0 +1,25 @@
+import Component from '#models/component'
+import Computer from '#models/computer'
+
+async function handleComponents(componentsId: number[], computer: Computer) {
+  const currentComponents = await computer.related('components').query()
+  const currentComponentsIds = currentComponents.map((component) => component.id)
+  const componentsToAdd = componentsId.filter((id) => !currentComponentsIds.includes(id))
+  const componentsToRemove = currentComponentsIds.filter((id) => !componentsId.includes(id))
+  await Promise.all(
+    componentsToAdd.map(async (id: number) => {
+      const component = await Component.findOrFail(id)
+      component.computerId = computer.id
+      await component.save()
+    })
+  )
+  await Promise.all(
+    componentsToRemove.map(async (id: number) => {
+      const component = await Component.findOrFail(id)
+      component.computerId = null
+      await component.save()
+    })
+  )
+}
+
+export { handleComponents }