import {z} from 'zod'

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

export const approvalWorkflowUser = z.object({id: z.string(), email: z.string(), first_name: z.string().optional(), last_name: z.string().optional(), avatar: z.string().optional()});

export const approvalWorkflowAssigneeResponse = z.object({id: z.string(), user: approvalWorkflowUser.optional(), is_document_sender: z.boolean(), is_selected: z.boolean().optional()});

export const approvalWorkflowGroupType = z.literal("selectable");

export const approvalWorkflowGroupResponse = z.object({id: z.string(), name: z.string(), type: approvalWorkflowGroupType.optional(), assignees: z.array(approvalWorkflowAssigneeResponse)});

export const approvalWorkflowStepResponse = z.object({id: z.string(), assignee: approvalWorkflowAssigneeResponse.optional(), group: approvalWorkflowGroupResponse.optional()});

export const approvalWorkflowResponse = z.object({is_enabled: z.boolean(), is_ordering_enabled: z.boolean(), is_editing_allowed: z.boolean(), has_conditional_approvals: z.boolean(), steps: z.array(approvalWorkflowStepResponse)});

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
};

/**
 * [Beta] Get Submit for approval configuration
 * 
 * GET /public/beta/templates/{template_id}/approval-workflow
 * 
 * Also accepts auth: oauth2
 */
export const getApiPublicBetaTemplatesTemplateIdApprovalWorkflow = async (options?: GetApiPublicBetaTemplatesTemplateIdApprovalWorkflowOptions) => {
const {baseUrl = "https://api.pandadoc.com", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (apiKey !== undefined) headers.set("Authorization", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/public/beta/templates/${encodeURIComponent(String(args.template_id))}/approval-workflow${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(approvalWorkflowResponse, await res.json())
};