import {
  type CommonReservedFields,
  type NoReservedFields,
  defaultGqlPermission,
  defaultPermission,
} from "@tailor-platform/erp-kit/core";
import { db, type TailorAnyDBField, type TailorAnyDBType } from "@tailor-platform/sdk";
import { accountPayableDocumentLine } from "./accountPayableDocumentLine";

export const ACCOUNT_PAYABLE_DISTRIBUTION_TYPES = [
  "MANUAL",
  "ACCRUAL",
  "INVOICE_PRICE_VARIANCE",
] as const;

const builtins = (params: { accountType?: TailorAnyDBType }) => {
  const accountId = db.uuid().description("Foreign key to posting Account");
  return {
    accountPayableDocumentLineId: db
      .uuid()
      .relation({
        type: "n-1",
        toward: { type: accountPayableDocumentLine, as: "accountPayableDocumentLine" },
        backward: "distributions",
      })
      .description("Foreign key to the commercial AP document line"),
    correctionOfDistributionLineId: db
      .uuid({ optional: true })
      .relation({
        type: "n-1",
        toward: { type: "self" },
        backward: "correctionDistributions",
      })
      .description("Optional self-reference to the posted AP distribution line being corrected"),
    accountId: params.accountType
      ? accountId.relation({
          type: "n-1",
          toward: { type: params.accountType, as: "account" },
          backward: "accountPayableDistributionLines",
        })
      : accountId,
    amount: db
      .decimal()
      .description("Distribution amount; signed only on INVOICE_PRICE_VARIANCE rows"),
    distributionType: db
      .enum(ACCOUNT_PAYABLE_DISTRIBUTION_TYPES)
      .description("Distribution type; non-MANUAL rows are system-derived"),
    description: db
      .string({ optional: true })
      .description("Optional distribution line description"),
  };
};

type ReservedFields = keyof ReturnType<typeof builtins> | CommonReservedFields;

export interface CreateAccountPayableDistributionLineTypeParams<
  F extends Record<string, TailorAnyDBField>,
> {
  fields?: NoReservedFields<F, ReservedFields>;
  accountType?: TailorAnyDBType;
}

export function createAccountPayableDistributionLineType<
  const F extends Record<string, TailorAnyDBField>,
>(params: CreateAccountPayableDistributionLineTypeParams<F>) {
  return db
    .table("AccountPayableDistributionLine", {
      ...builtins(params),
      ...((params.fields ?? {}) as F),
      ...db.fields.timestamps(),
    })
    .permission(defaultPermission)
    .gqlPermission(defaultGqlPermission);
}

export const accountPayableDistributionLine = createAccountPayableDistributionLineType({});