import {z} from 'zod'

export type CreateIdentityRequest = {didMetadata: {method: string, blockchain: string, network: string, type: 'BJJ' | 'ETH'}, credentialStatusType?: ('Iden3commRevocationStatusV1.0' | 'Iden3ReverseSparseMerkleTreeProof' | 'Iden3OnchainSparseMerkleTreeProof2023') | undefined, displayName?: string | undefined};

export type CreateApiV2IdentitiesArgs = {body: CreateIdentityRequest};

export type CreateApiV2IdentitiesOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const timeUTC = z.string();

export const identityState = z.object({stateID: z.number().int(), identifier: z.string(), state: z.string().optional(), rootOfRoots: z.string().optional(), claimsTreeRoot: z.string().optional(), revocationTreeRoot: z.string().optional(), blockTimestamp: z.number().int().optional(), blockNumber: z.number().int().optional(), txID: z.string().optional(), previousState: z.string().optional(), status: z.string(), modifiedAt: timeUTC, createdAt: timeUTC});

export const createIdentityResponse = z.object({identifier: z.string().optional(), displayName: z.string().optional(), state: identityState.optional(), address: z.string().optional(), balance: z.string().optional(), keyType: z.string(), credentialStatusType: z.enum(["Iden3commRevocationStatusV1.0", "Iden3ReverseSparseMerkleTreeProof", "Iden3OnchainSparseMerkleTreeProof2023"])});

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 Identity
 * 
 * POST /v2/identities
 */
export const createApiV2Identities = async (args: CreateApiV2IdentitiesArgs, options: CreateApiV2IdentitiesOptions) => {
const {baseUrl, 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 = `${baseUrl.replace(/\/+$/, '')}/v2/identities${query.size > 0 ? `?${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(createIdentityResponse, await res.json())
};