import {z} from 'zod'

export type GetApiIbcCoreConnectionV1ConnectionsArgs = {'pagination.key'?: string | undefined, 'pagination.offset'?: unknown | undefined, 'pagination.limit'?: unknown | undefined, 'pagination.count_total'?: boolean | undefined, 'pagination.reverse'?: boolean | undefined};

export type GetApiIbcCoreConnectionV1ConnectionsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const getApiIbcCoreConnectionV1ConnectionsResponse = z.object({connections: z.array(z.object({id: z.string().optional(), client_id: z.string().optional(), versions: z.array(z.object({identifier: z.string().optional(), features: z.array(z.string()).optional()})).optional(), state: z.enum(["STATE_UNINITIALIZED_UNSPECIFIED", "STATE_INIT", "STATE_TRYOPEN", "STATE_OPEN"]).optional(), counterparty: z.object({client_id: z.string().optional(), connection_id: z.string().optional(), prefix: z.object({key_prefix: z.string().optional()}).optional()}).optional(), delay_period: z.string().optional()})).optional(), pagination: z.object({next_key: z.string().optional(), total: z.string().optional()}).optional(), height: z.object({revision_number: z.string().optional(), revision_height: z.string().optional()}).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
};

/**
 * Connections queries all the IBC connections of a chain.
 * 
 * GET /ibc/core/connection/v1/connections
 */
export const getApiIbcCoreConnectionV1Connections = async (args: GetApiIbcCoreConnectionV1ConnectionsArgs, options: GetApiIbcCoreConnectionV1ConnectionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args['pagination.key'] != null) query.append("pagination.key", String(args['pagination.key']))
if (args['pagination.offset'] != null) query.append("pagination.offset", String(args['pagination.offset']))
if (args['pagination.limit'] != null) query.append("pagination.limit", String(args['pagination.limit']))
if (args['pagination.count_total'] != null) query.append("pagination.count_total", String(args['pagination.count_total']))
if (args['pagination.reverse'] != null) query.append("pagination.reverse", String(args['pagination.reverse']))

const url = `${baseUrl.replace(/\/+$/, '')}/ibc/core/connection/v1/connections${query.size > 0 ? `?${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(getApiIbcCoreConnectionV1ConnectionsResponse, await res.json())
};