import {z} from 'zod'

export type GetApiRestServicedeskapiRequestIssueIdOrKeyApprovalApprovalIdArgs = {issueIdOrKey: string, approvalId: number};

export type GetApiRestServicedeskapiRequestIssueIdOrKeyApprovalApprovalIdOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const selfLinkDTO = z.object({self: z.string().optional()});

export const userLinkDTO = z.object({avatarUrls: z.record(z.string(), z.string()).optional(), jiraRest: z.string().optional(), self: z.string().optional()});

export const userDTO = z.object({_links: userLinkDTO.optional(), accountId: z.string().optional(), active: z.boolean().optional(), displayName: z.string().optional(), emailAddress: z.string().optional(), key: z.string().optional(), name: z.string().optional(), timeZone: z.string().optional()});

export const approverDTO = z.object({approver: userDTO.optional(), approverDecision: z.enum(["approved", "declined", "pending"]).optional()});

export const dateDTO = z.object({epochMillis: z.number().int().optional(), friendly: z.string().optional(), iso8601: z.string().optional(), jira: z.string().optional()});

export const approvalDTO = z.object({_links: selfLinkDTO.optional(), approvers: z.array(approverDTO).optional(), canAnswerApproval: z.boolean().optional(), completedDate: dateDTO.optional(), createdDate: dateDTO.optional(), finalDecision: z.enum(["approved", "declined", "pending"]).optional(), id: z.string().optional(), name: 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
};

/**
 * Get approval by id
 * 
 * GET /rest/servicedeskapi/request/{issueIdOrKey}/approval/{approvalId}
 */
export const getApiRestServicedeskapiRequestIssueIdOrKeyApprovalApprovalId = async (args: GetApiRestServicedeskapiRequestIssueIdOrKeyApprovalApprovalIdArgs, options?: GetApiRestServicedeskapiRequestIssueIdOrKeyApprovalApprovalIdOptions) => {
const {baseUrl = "https://your-domain.atlassian.net", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/rest/servicedeskapi/request/${encodeURIComponent(String(args.issueIdOrKey))}/approval/${encodeURIComponent(String(args.approvalId))}${query.size > 0 ? `?${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(approvalDTO, await res.json())
};