import {z} from 'zod'

export type GetApiEstimatesLineItemNotesSuggestionsArgs = {serviceCatalogItemId?: string | undefined, inventoryItemId?: string | undefined, retailItemId?: string | undefined, billableItemId?: string | undefined, q?: string | undefined, limit?: (number | unknown) | undefined};

export type GetApiEstimatesLineItemNotesSuggestionsOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const lineItemNoteSuggestionDto = z.object({source: z.string().optional(), text: z.string().optional(), templateId: z.string().nullable().optional()});

export const getApiEstimatesLineItemNotesSuggestionsResponse = z.array(lineItemNoteSuggestionDto);

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Autocomplete suggestions for the line-item note field (ITE-573 + ITE-574): saved note
 * templates merged with distinct notes previously used on estimate lines for the same
 * catalog item. Saved entries carry `source: "saved"` + their `templateId`;
 * history entries carry `source: "history"` + null. Serves the FE combobox (ITE-575).
 * 
 * Saved-template candidacy: templates with an attachment to the line's item id, tag
 * attachments whose Smart Tag is assigned to the line's item (service/inventory lines
 * only — retail and billable items are not taggable), plus any-item templates
 * (AppliesToAnyItem, offered on any keyed line); Clinic scope for everyone, Personal
 * scope only for the owner. A history entry whose trimmed
 * case-insensitive text equals a saved template's collapses INTO the saved entry
 * (saved wins). Orphaned templates (item-specific, all items deleted) are never offered.
 * 
 * The caller sends exactly one item-id param — whichever FK the line being authored keys
 * on. `PrescriptionItemId` is deliberately NOT a keying param: Rx-created lines always
 * carry `InventoryItemId` too, and a prescription item is a per-prescription governance
 * record, not a reusable catalog identity.
 * 
 * Ranking: q match quality (prefix beats substring) → recency → frequency. De-duped
 * case-insensitively on trimmed text; blank or &lt;3-char notes excluded. Always 200 with
 * `[]` on no key / no match.
 * 
 * GET /Estimates/line-item-notes/suggestions
 */
export const getApiEstimatesLineItemNotesSuggestions = async (args: GetApiEstimatesLineItemNotesSuggestionsArgs, options?: GetApiEstimatesLineItemNotesSuggestionsOptions) => {
const {baseUrl = "https://api.clinicos.vet/backend/business", fetch: fetchFn = fetch, Bearer} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.serviceCatalogItemId != null) query.append("serviceCatalogItemId", String(args.serviceCatalogItemId))
if (args.inventoryItemId != null) query.append("inventoryItemId", String(args.inventoryItemId))
if (args.retailItemId != null) query.append("retailItemId", String(args.retailItemId))
if (args.billableItemId != null) query.append("billableItemId", String(args.billableItemId))
if (args.q != null) query.append("q", String(args.q))
if (args.limit != null) query.append("limit", String(args.limit))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/Estimates/line-item-notes/suggestions${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getApiEstimatesLineItemNotesSuggestionsResponse, await res.json())
};