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

const builtins = {
  // Intra-module FK: WorkSchedule belongs to exactly one Assignment
  assignmentId: db
    .uuid()
    .relation({
      type: "n-1",
      toward: { type: assignment, as: "assignment" },
      backward: "workSchedules",
    })
    .description("Foreign key to the Assignment that owns this contractual work schedule"),
  scheduledDailyMinutes: db
    .int()
    .description(
      "Contractual scheduled minutes per day (non-negative); the planned baseline, not actual worked time",
    ),
  scheduledWeeklyMinutes: db
    .int()
    .description(
      "Contractual scheduled minutes per week (non-negative); the planned baseline, not actual worked time",
    ),
  // Effective-dating standard (ADR-013): generation series
  effectiveStart: db.date().description("Date this generation becomes effective"),
  effectiveEnd: db
    .date({ optional: true })
    .description("Date this generation stops being effective; null means the current generation"),
  versionOf: db
    .uuid()
    .description(
      "Stable key binding together all generations of one continuous contractual work schedule for an Assignment",
    ),
};

type ReservedFields = keyof typeof builtins | CommonReservedFields;

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

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

// Codegen instance; the Assignment FK is always injected directly
export const workSchedule = createWorkScheduleType({});