import {z} from 'zod'

export type CollectionPolicyRequest = {start_date: string, end_date: string, amount: string};

export type CollectionItemRequest = {amount: string, external_id?: (string | null) | undefined, collection_policies: Array<CollectionPolicyRequest>};

export type CollectionInstructionRequest = {link_id: string, items: Array<CollectionItemRequest>};

export type CreateApiApiCollectionInstructionsArgs = {body: CollectionInstructionRequest};

export type CreateApiApiCollectionInstructionsOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const enumCollectionInstructionStatus = z.enum(["PROCESSING", "COMPLETED", "CANCELLED"]);

export const enumCollectionItemStatus = z.enum(["PENDING", "PROCESSING", "CHARGE_SETTLED", "POLICY_EXPIRED", "CHARGE_REJECTED", "FAILED", "COMPLETED", "CANCELLED"]);

export const collectionPolicyResponse = z.object({id: z.string(), start_date: z.string(), end_date: z.string(), amount: z.string(), created_at: z.string()});

export const collectionItemResponse = z.object({id: z.string(), amount: z.string(), external_id: z.string().nullable(), status: enumCollectionItemStatus, created_at: z.string(), updated_at: z.string(), collection_policies: z.array(collectionPolicyResponse)});

export const collectionInstructionResponse = z.object({id: z.string(), link_id: z.string(), status: enumCollectionInstructionStatus, created_at: z.string(), updated_at: z.string(), items: z.array(collectionItemResponse)});

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
};

/**
 * Create a collection instruction
 * 
 * POST /api/collection-instructions/
 */
export const createApiApiCollectionInstructions = async (args: CreateApiApiCollectionInstructionsArgs, options?: CreateApiApiCollectionInstructionsOptions) => {
const {baseUrl = "https://sandbox.belvo.com", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/collection-instructions/${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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