import {z} from 'zod'

export type LocaleCode = string;

export type GetApiDemandAllocationTemplatesTemplateIdArgs = {locale?: LocaleCode | undefined};

export type GetApiDemandAllocationTemplatesTemplateIdOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const templateID = z.string();

export const templateSupplierResponse = z.object({supplier_id: z.number().int().gte(0).optional(), name: z.string().min(1).optional(), type: z.enum(["loyalty_panels", "non_panel_or_affiliate", "survey_panels"]).optional()});

export const allocationTemplateExchangeSupplierResponse = z.object({type: z.literal("exchange"), percentage_max: z.number().int().gte(0).lte(100), percentage_min: z.number().int().gte(0).lte(100).nullable(), suppliers: z.array(templateSupplierResponse)});

export const allocationTemplateGroupSupplierResponse = z.object({type: z.literal("group"), name: z.string(), percentage_max: z.number().int().gte(0).lte(100), percentage_min: z.number().int().gte(0).lte(100).nullable(), suppliers: z.array(templateSupplierResponse)});

export const allocationTemplateBlockedSupplierResponse = z.object({type: z.literal("blocked"), suppliers: z.array(templateSupplierResponse)});

export const getGlobalAllocationTemplateByTemplateIdResponse = z.object({template_id: templateID, name: z.string(), supply_allocations: z.array(z.union([allocationTemplateExchangeSupplierResponse, allocationTemplateGroupSupplierResponse, allocationTemplateBlockedSupplierResponse]))});

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
};

/**
 * Retrieve a global allocation template by ID
 * 
 * GET /demand/allocation-templates/{template_id}
 */
export const getApiDemandAllocationTemplatesTemplateId = async (args: GetApiDemandAllocationTemplatesTemplateIdArgs, options?: GetApiDemandAllocationTemplatesTemplateIdOptions) => {
const {baseUrl = "https://api.cint.com/v1", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.locale != null) query.append("locale", String(args.locale))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/demand/allocation-templates/${encodeURIComponent(String(args.template_id))}${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(getGlobalAllocationTemplateByTemplateIdResponse, await res.json())
};