import {z} from 'zod'

export type GetApiIssuesIssueIdArgs = {issueId: string};

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

export const actorType = z.enum(["USER", "WORKFLOW_GENERATED"]);

export const actor = z.object({actorType: actorType, actorId: z.string()});

export const ownerType = z.enum(["USER", "TEAM"]);

export const issueOwner = z.object({ownerType: ownerType, ownerId: z.string()});

export const issueSeverity = z.enum(["CRITICAL", "HIGH", "MEDIUM", "LOW", "NO_SEVERITY"]);

export const issueStatus = z.enum(["NOT_STARTED", "IN_PROGRESS", "CLOSED"]);

export const sourceType = z.enum(["AUDIT", "AUDIT_EXTERNAL", "INCIDENT", "EXTERNAL_PARTY", "SELF_ASSESSMENT", "OTHER"]);

export const source = z.object({sourceType: sourceType, sourceId: z.string().optional()});

export const closedReason = z.enum(["RESOLVED", "DUPLICATE", "ACCEPTED", "OTHER"]);

export const closedMetadata = z.object({reason: closedReason, comment: z.string(), closedAt: z.string()});

export const issueCustomField = z.object({label: z.string(), value: z.union([z.string(), z.array(z.string())])});

export const extractIssueTemplateSTANDARDISSUE = z.literal("STANDARD_ISSUE");

export const standardIssueType = z.enum(["AREA_OF_CONCERN", "MAJOR_NONCONFORMITY", "MINOR_NONCONFORMITY", "OPP_FOR_IMPROVEMENT", "EXCEPTION", "PROCESS_FOR_IMPROVEMENT"]);

export const standardIssue = z.object({id: z.string(), readableIssueId: z.string(), createdDate: z.string(), createdBy: actor, lastModifiedBy: actor, lastModifiedDate: z.string(), title: z.string(), description: z.string(), owners: z.array(issueOwner), severity: issueSeverity, status: issueStatus, rootCause: z.string().nullable(), correctiveAction: z.string().nullable(), dueDate: z.string().nullable(), source: source.nullable(), controlDomain: z.string().nullable(), closedMetadata: closedMetadata.nullable(), detectedDate: z.string(), mappedControlIds: z.array(z.string()), mappedRiskScenarioIds: z.array(z.string()), mappedPolicyIds: z.array(z.string()), customFields: z.array(issueCustomField), template: extractIssueTemplateSTANDARDISSUE, type: standardIssueType.nullable()});

export const extractIssueTemplateSTANDARDPOAM = z.literal("STANDARD_POAM");

export const standardPOAM = z.object({id: z.string(), readableIssueId: z.string(), createdDate: z.string(), createdBy: actor, lastModifiedBy: actor, lastModifiedDate: z.string(), title: z.string(), description: z.string(), owners: z.array(issueOwner), severity: issueSeverity, status: issueStatus, rootCause: z.string().nullable(), correctiveAction: z.string().nullable(), dueDate: z.string().nullable(), source: source.nullable(), controlDomain: z.string().nullable(), closedMetadata: closedMetadata.nullable(), detectedDate: z.string(), mappedControlIds: z.array(z.string()), mappedRiskScenarioIds: z.array(z.string()), mappedPolicyIds: z.array(z.string()), customFields: z.array(issueCustomField), template: extractIssueTemplateSTANDARDPOAM, requiredResources: z.string().nullable(), systemsDescription: z.string().nullable()});

export const issue = z.union([standardIssue, standardPOAM]);

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 issue by ID
 * 
 * GET /issues/{issueId}
 */
export const getApiIssuesIssueId = async (args: GetApiIssuesIssueIdArgs, options?: GetApiIssuesIssueIdOptions) => {
const {baseUrl = "https://api.vanta.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/issues/${encodeURIComponent(String(args.issueId))}${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(issue, await res.json())
};