import {z} from 'zod'

export type ConsentRequestBody = {scopes: Array<'account_details' | 'holder_information' | 'transactions_details'>, from_date?: string | undefined, to_date?: (string | null) | undefined, period_days?: number | undefined};

export type AttemptRequestBody = {fetch_scopes?: (Array<'accounts' | 'accounts_without_balance' | 'holder_info' | 'transactions'>) | undefined, from_date?: string | undefined, to_date?: string | undefined, fetched_accounts_notify?: boolean | undefined, custom_fields?: Record<string, never> | undefined, locale?: string | undefined, include_natures?: (Array<string> | null) | undefined, customer_last_logged_at?: string | undefined, exclude_accounts?: Array<string> | undefined, store_credentials: boolean, unduplication_strategy?: string | undefined, user_present?: boolean | undefined, return_to?: string | undefined};

export type CreateConnectionRequestBody = {data: {customer_id: string, country_code: string, provider_code: string, consent: ConsentRequestBody, attempt?: AttemptRequestBody | undefined, credentials: Record<string, never>, daily_refresh?: boolean | undefined, include_fake_providers?: boolean | undefined, categorization?: ('none' | 'personal' | 'business') | undefined, file_url?: boolean | undefined}};

export type CreateApiConnectionsArgs = {body: CreateConnectionRequestBody};

export type CreateApiConnectionsOptions = {baseUrl?: string | undefined, appId?: string | undefined, secret?: string | undefined, fetch?: typeof fetch | undefined};

export const stage = z.object({created_at: z.string(), id: z.string(), interactive_fields_names: z.array(z.string()).nullable().optional(), interactive_html: z.string().nullable().optional(), name: z.enum(["start", "connect", "interactive", "fetch_holder_info", "fetch_accounts", "fetch_recent", "fetch_full", "disconnect", "finish"]), updated_at: z.string()});

export const simplifiedAttempt = z.object({api_mode: z.enum(["app", "service"]).optional(), api_version: z.string().optional(), automatic_fetch: z.boolean().optional(), daily_refresh: z.boolean().optional(), categorize: z.boolean().optional(), created_at: z.string().optional(), custom_fields: z.object({}).optional(), device_type: z.enum(["desktop", "tablet", "mobile"]).optional(), remote_ip: z.string().optional(), exclude_accounts: z.array(z.string()).optional(), user_present: z.boolean().optional(), customer_last_logged_at: z.string().optional(), fail_at: z.string().optional(), fail_error_class: z.string().optional(), fail_message: z.string().optional(), fetch_scopes: z.array(z.enum(["accounts", "holder_info", "transactions"])).optional(), finished: z.boolean().optional(), finished_recent: z.boolean().optional(), from_date: z.string().optional(), id: z.string().optional(), interactive: z.boolean().optional(), locale: z.string().optional(), partial: z.boolean().optional(), store_credentials: z.boolean().optional(), success_at: z.string().optional(), to_date: z.string().optional(), updated_at: z.string().optional(), show_consent_confirmation: z.boolean().optional(), include_natures: z.array(z.string()).optional(), last_stage: stage.optional()});

export const connection = z.object({id: z.string(), secret: z.string(), provider_id: z.string(), provider_code: z.string(), provider_name: z.string(), daily_refresh: z.boolean(), customer_id: z.string(), created_at: z.string(), updated_at: z.string(), last_success_at: z.string(), status: z.enum(["active", "inactive", "disabled"]), country_code: z.string(), next_refresh_possible_at: z.string().optional(), store_credentials: z.boolean(), last_attempt: simplifiedAttempt, show_consent_confirmation: z.boolean(), last_consent_id: z.string()});

export const connectionResponse = z.object({data: connection.optional()});

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 connection
 * 
 * POST /connections
 */
export const createApiConnections = async (args: CreateApiConnectionsArgs, options?: CreateApiConnectionsOptions) => {
const {baseUrl = "https://www.saltedge.com/api/v5", fetch: fetchFn = fetch, appId, secret} = options ?? {}

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

if (appId !== undefined) headers.set("App-id", appId)
if (secret !== undefined) headers.set("Secret", secret)

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