import {z} from 'zod'

export type AgreementScope = 'platform' | 'product';

export type ProductType = 'brokerage' | 'retirement_account';

export type AgreementAcceptance = 'required' | 'not_required';

export type GetApiAgreementsArgs = {cursor?: string | undefined, limit?: number | undefined, scope?: AgreementScope | undefined, product?: ProductType | undefined, acceptance?: AgreementAcceptance | undefined, 'LMG-Data-Privacy-Access-Principal': string, 'LMG-Data-Privacy-Access-Justification': string};

export type GetApiAgreementsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const agreementType = z.enum(["pricing_table", "privacy_policy", "terms_and_conditions"]);

export const agreementScope = z.enum(["platform", "product"]);

export const productType = z.enum(["brokerage", "retirement_account"]);

export const agreementAcceptance = z.enum(["required", "not_required"]);

export const agreementResponse = z.object({id: z.string(), type: agreementType, url: z.string(), language: z.string(), name: z.string(), scope: agreementScope, product: productType.nullable().optional(), acceptance: agreementAcceptance, effective_at: z.string()});

export const pagination = z.object({next_cursor: z.string().optional()});

export const encodedPaginatedCollectionResponseAgreementResponse = z.object({data: z.array(agreementResponse), pagination: pagination});

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
};

/**
 * Get Latest Agreements
 * 
 * GET /agreements
 */
export const getApiAgreements = async (args: GetApiAgreementsArgs, options?: GetApiAgreementsOptions) => {
const {baseUrl = "https://sandbox.api.lemon.markets/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.scope != null) query.append("scope", String(args.scope))
if (args.product != null) query.append("product", String(args.product))
if (args.acceptance != null) query.append("acceptance", String(args.acceptance))
if (args['LMG-Data-Privacy-Access-Principal'] != null) headers.set("LMG-Data-Privacy-Access-Principal", String(args['LMG-Data-Privacy-Access-Principal']))
if (args['LMG-Data-Privacy-Access-Justification'] != null) headers.set("LMG-Data-Privacy-Access-Justification", String(args['LMG-Data-Privacy-Access-Justification']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/agreements${query.size > 0 ? `?${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(encodedPaginatedCollectionResponseAgreementResponse, await res.json())
};