import {z} from 'zod'

export type GetApiV2IncidentsArgs = {limit?: (number | null) | undefined, sort_key?: (string | null) | undefined, sort_order?: (string | null) | undefined, monitor_id?: (Array<string> | null) | undefined, status?: (Array<string> | null) | undefined, spend_status?: (Array<string> | null) | undefined, cursor?: (string | null) | undefined};

export type GetApiV2IncidentsOptions = {baseUrl?: string | undefined, APIKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const incidentWorkItem = z.object({display_id: z.string().nullable().optional(), display_name: z.string().nullable().optional(), provider: z.string().nullable().optional(), ticket_url: z.string().nullable().optional()});

export const incidentSummary = z.object({cost_impact: z.number(), incident_id: z.string(), monitor_id: z.string(), monitor_name: z.string(), pct_above_baseline: z.number().nullable(), spend_status: z.string(), start_date: z.string(), status: z.string(), summary: z.string().max(250).nullable(), title: z.string().nullable(), work_item: incidentWorkItem.nullable().optional()});

export const incidentList = z.object({items: z.array(incidentSummary), next_cursor: z.string().nullable()});

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 incidents
 * 
 * GET /v2/incidents
 */
export const getApiV2Incidents = async (args: GetApiV2IncidentsArgs, options?: GetApiV2IncidentsOptions) => {
const {baseUrl = "https://api.cloudzero.com", fetch: fetchFn = fetch, APIKeyAuth} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.sort_key != null) query.append("sort_key", String(args.sort_key))
if (args.sort_order != null) query.append("sort_order", String(args.sort_order))
for (const item of args.monitor_id ?? []) query.append("monitor_id", String(item))
for (const item of args.status ?? []) query.append("status", String(item))
for (const item of args.spend_status ?? []) query.append("spend_status", String(item))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (APIKeyAuth !== undefined) headers.set("Authorization", APIKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/incidents${query.size > 0 ? `?${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(incidentList, await res.json())
};