import { CollectionConfig } from "payload";

const HoldRequests: CollectionConfig = {
  slug: 'holdRequests',
  fields: [
    {
      name: 'copy',
      type: 'relationship',
      relationTo: 'copies',
      filterOptions: ({ data }) => {
        return {
          book: {
            equals: data.book
          },
        }
      }
    },
    {
      name: 'book',
      type: 'relationship',
      relationTo: 'books',
      required: true,
    },
    {
      name: 'repository',
      type: 'relationship',
      relationTo: 'repositories',
    },
    {
      name: 'userRequested',
      type: 'relationship',
      relationTo: 'users',
      required: true,
    },
    {
      name: 'dateRequested',
      type: 'date',
    },
    {
      name: 'isHolding',
      type: 'checkbox',
      hooks: {
        beforeValidate: [({ data, originalDoc }) => {
          if (data?.isHolding && !data.copy) return originalDoc
        }]
      }
    },
    {
      name: 'holdingUntilDate',
      type: 'date',
    },
    {
      name: 'isRejected',
      type: 'checkbox',
    },
    {
      name: 'isCheckedOut',
      type: 'checkbox',
      hooks:
      {
        beforeValidate: [({ data, originalDoc }) => {
          if (originalDoc.isCheckedOut) return originalDoc
          if (data?.isCheckedOut && !originalDoc.copy) return originalDoc
          if (originalDoc.isCheckedOut && !data?.isCheckedOut) return originalDoc
        }],
        afterChange: [({ value, data, req }) => {
          if (value) {
            req.payload.create({
              collection: 'checkouts',
              data: {
                user: data?.userRequested,
                copy: data?.copy,
              }
            })

            return data
          }
        }]
      }

    }
  ],
}

export default HoldRequests