"use server";

import type { Filter, ExtendedSortingState, JoinOperator } from "@/types/table";
import { getAllVendorsContractsCompletionSummary } from "@/lib/edp-progress/vendor-completion-stats";
import type { EDPVendorRow } from "./table/edp-progress-table-columns";

type GetListsArgs = {
  filters?: Filter<EDPVendorRow>[]
  sort?: ExtendedSortingState<EDPVendorRow>
  joinOperator?: JoinOperator
  search?: string
}

function applyFilters(rows: EDPVendorRow[], filters?: Filter<EDPVendorRow>[], _joinOperator?: JoinOperator): EDPVendorRow[] {
  if (!filters || filters.length === 0) return rows
  return rows.filter((row) => {
    return filters.every((f) => {
      const id = f.id as keyof EDPVendorRow
      const value = (row as any)[id]
      const v = f.value
      switch (f.type) {
        case "text":
          return typeof value === "string" && String(value).toLowerCase().includes(String(v).toLowerCase())
        case "number":
          if (typeof value !== "number") return false
          if (f.operator === "gte") return value >= Number(v)
          if (f.operator === "lte") return value <= Number(v)
          if (f.operator === "gt") return value > Number(v)
          if (f.operator === "lt") return value < Number(v)
          return value === Number(v)
        case "select":
          return String(value) === String(v)
        default:
          return true
      }
    })
  })
}

function applyGlobalSearch(rows: EDPVendorRow[], search?: string): EDPVendorRow[] {
  if (!search) return rows
  const s = search.toLowerCase()
  return rows.filter((r) =>
    (r.vendorName || "").toLowerCase().includes(s)
  )
}

function applySorting(rows: EDPVendorRow[], sort?: ExtendedSortingState<EDPVendorRow>): EDPVendorRow[] {
  if (!sort || sort.length === 0) return rows
  const copy = [...rows]
  copy.sort((a, b) => {
    for (const s of sort) {
      const aVal = (a as any)[s.id]
      const bVal = (b as any)[s.id]
      if (aVal === bVal) continue
      if (aVal == null) return s.desc ? 1 : -1
      if (bVal == null) return s.desc ? -1 : 1
      if (aVal < bVal) return s.desc ? 1 : -1
      if (aVal > bVal) return s.desc ? -1 : 1
    }
    return 0
  })
  return copy
}

export async function getEDPProgressLists(args: GetListsArgs = {}): Promise<{ data: EDPVendorRow[]; pageCount: number }> {
  const res = await getAllVendorsContractsCompletionSummary();
  const rows: EDPVendorRow[] = (res?.vendors || []).map((v) => ({
    vendorId: v.vendorId,
    vendorName: v.vendorName,
    totalForms: v.totalForms,
    totalTags: v.totalTags,
    totalRequiredFields: v.totalRequiredFields,
    totalFilledFields: v.totalFilledFields,
    completionPercentage: v.overallCompletionPercentage,
  }));

  const searched = applyGlobalSearch(rows, args.search)
  const filtered = applyFilters(searched, args.filters, args.joinOperator)
  const sorted = applySorting(filtered, args.sort)
  return { data: sorted, pageCount: 1 };
}