import { api } from '@/lib/api'
import type {
  PriceListResponse,
  PriceResolution,
  SchemeResponse,
  SchemeRuleType,
  SchemeSuggestion,
} from '@/types/api'

// ─── Price Lists ──────────────────────────────────────────────────────────────

export interface PriceListItemBody {
  itemId: string
  price: number
  minPrice?: number | null
}

export interface PriceListBody {
  name: string
  regionId?: string | null
  effectiveFrom: string
  effectiveTo: string
  isActive?: boolean
  items: PriceListItemBody[]
}

export const priceLists = {
  list: (params?: { regionId?: string }) =>
    api.get<PriceListResponse[]>('/price-lists', { params }).then(r => r.data),

  get: (id: string) =>
    api.get<PriceListResponse>(`/price-lists/${id}`).then(r => r.data),

  create: (body: PriceListBody) =>
    api.post<PriceListResponse>('/price-lists', body).then(r => r.data),

  update: (id: string, body: Partial<PriceListBody>) =>
    api.put<PriceListResponse>(`/price-lists/${id}`, body).then(r => r.data),

  remove: (id: string) =>
    api.delete(`/price-lists/${id}`),

  upsertItem: (priceListId: string, sku: string, body: { price: number; minPrice?: number | null; retailPrice?: number | null; agencyMarginPercent?: number | null }) =>
    api.put<PriceListResponse>(`/price-lists/${priceListId}/items/${encodeURIComponent(sku)}`, body).then(r => r.data),

  removeItem: (priceListId: string, sku: string) =>
    api.delete<PriceListResponse>(`/price-lists/${priceListId}/items/${encodeURIComponent(sku)}`).then(r => r.data),

  resolve: (params: { itemId: string; storeId: string; saleDate: string }) =>
    api.get<PriceResolution>('/price-lists/resolve', { params }).then(r => r.data),
}

// ─── Schemes ──────────────────────────────────────────────────────────────────

export interface BundleComponentBody {
  itemId: string
  qty: number
}

export interface SchemeBody {
  name: string
  ruleType: SchemeRuleType
  ruleConfig?: string | null
  triggerItemId?: string | null
  triggerQty?: number
  freeItemId?: string | null
  freeQty?: number
  bundleComponents?: BundleComponentBody[]
  regionId?: string | null
  eligibleSegment?: string | null
  dateRangeFrom: string
  dateRangeTo: string
  agentLimitExempt?: boolean
  baselineExpectedSales?: number
  isActive?: boolean
}

export const schemes = {
  list: (params?: { regionId?: string }) =>
    api.get<SchemeResponse[]>('/schemes', { params }).then(r => r.data),

  get: (id: string) =>
    api.get<SchemeResponse>(`/schemes/${id}`).then(r => r.data),

  create: (body: SchemeBody) =>
    api.post<SchemeResponse>('/schemes', body).then(r => r.data),

  update: (id: string, body: Partial<SchemeBody>) =>
    api.put<SchemeResponse>(`/schemes/${id}`, body).then(r => r.data),

  remove: (id: string) =>
    api.delete(`/schemes/${id}`),

  setFreeGoodsRule: (id: string, body: { triggerItemId?: string | null; triggerQty?: number | null; freeItemId: string; freeQty: number }) =>
    api.put<SchemeResponse>(`/schemes/${id}/free-goods-rule`, body).then(r => r.data),

  upsertBundleComponent: (id: string, itemId: string, qty: number) =>
    api.put<SchemeResponse>(`/schemes/${id}/bundle-components/${itemId}`, { qty }).then(r => r.data),

  removeBundleComponent: (id: string, itemId: string) =>
    api.delete<SchemeResponse>(`/schemes/${id}/bundle-components/${itemId}`).then(r => r.data),

  /** Schemes the lines of a not-yet-saved Shop PO qualify for (or are close to). */
  suggest: (body: { storeId: string; items: { itemId: string; quantity: number; unitPrice?: number | null }[] }) =>
    api.post<SchemeSuggestion[]>('/schemes/suggest', body).then(r => r.data),
}