import {z} from 'zod'

export type GetApiApprovalsArgs = {includeUserApproved?: boolean | undefined, userId?: string | undefined, includeAllUsers?: boolean | undefined, quorumStatusMode?: ('NONE' | 'SUMMARY') | undefined, pageSize?: number | undefined, pageCursor?: string | undefined};

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

export const quorumRequestState = z.enum(["PENDING", "APPROVED", "REJECTED", "CANCELLED", "TIMED_OUT", "FAILED"]);

export const quorumApprovalState = z.enum(["APPROVED", "PENDING"]);

export const quorumUser = z.object({index: z.number().int(), userId: z.string(), status: quorumApprovalState, isMandatoryOwner: z.boolean().optional()});

export const simpleQuorum = z.object({type: z.literal("SIMPLE"), threshold: z.number().int(), currentApprovalCount: z.number().int(), status: quorumApprovalState, isMandatoryOwnerApproved: z.boolean().optional(), members: z.array(z.number().int()).optional()});

export const quorumGroup = z.object({threshold: z.number().int(), currentApprovalCount: z.number().int(), status: quorumApprovalState, members: z.array(z.number().int()).optional()});

export const quorumRuleset = z.object({groupMatch: z.enum(["ALL", "ANY"]), status: quorumApprovalState, groups: z.array(quorumGroup)});

export const rulesetQuorum = z.object({type: z.literal("RULESET"), rulesetMatch: z.enum(["ALL", "ANY"]), status: quorumApprovalState, isMandatoryOwnerApproved: z.boolean().optional(), rulesets: z.array(quorumRuleset)});

export const quorumStatus = z.object({requestStatus: quorumRequestState, users: z.array(quorumUser).optional(), quorum: z.discriminatedUnion("type", [simpleQuorum, rulesetQuorum])}).nullable();

export const approvalRequestItem = z.object({requestPayload: z.string(), requestSignature: z.string().optional(), userStatus: z.enum(["USER_STATUS_NOT_APPLICABLE", "USER_NOT_ELIGIBLE_TO_APPROVE", "USER_NOT_APPROVED", "USER_APPROVED"]), quorumStatus: quorumStatus.optional()});

export const listApprovalsResponse = z.object({data: z.array(approvalRequestItem), next: z.string().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
};

/**
 * List approval requests
 * 
 * GET /approvals
 */
export const getApiApprovals = async (args: GetApiApprovalsArgs, options?: GetApiApprovalsOptions) => {
const {baseUrl = "https://api.fireblocks.io/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.includeUserApproved != null) query.append("includeUserApproved", String(args.includeUserApproved))
if (args.userId != null) query.append("userId", String(args.userId))
if (args.includeAllUsers != null) query.append("includeAllUsers", String(args.includeAllUsers))
if (args.quorumStatusMode != null) query.append("quorumStatusMode", String(args.quorumStatusMode))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (args.pageCursor != null) query.append("pageCursor", String(args.pageCursor))

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