import {z} from 'zod'

export type IssueStatus = 'open' | 'closed' | 'all';

export type IssueLevel = 'error' | 'warning';

export type GetApiIssuesArgs = {created_on?: string | undefined, last_seen_on?: string | undefined, error_code?: string | undefined, status?: IssueStatus | undefined, level?: (IssueLevel | null) | undefined};

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

export const errorInfo = z.object({error_code: z.string(), status: z.string(), title: z.string(), description: z.string().optional()});

export const issueLevel = z.enum(["error", "warning"]);

export const issueItem = z.object({id: z.string(), consumer_id: z.string(), connection_id: z.string(), integration_id: z.number().int(), integration_name: z.string(), created_on: z.string(), updated_on: z.string(), last_seen: z.string(), error: errorInfo, occurrences: z.number().int(), level: issueLevel});

export const getApiIssuesResponse = z.array(issueItem);

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 issues
 * 
 * GET /issues
 */
export const getApiIssues = async (args: GetApiIssuesArgs, options?: GetApiIssuesOptions) => {
const {baseUrl = "https://api.chift.eu", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.created_on != null) query.append("created_on", String(args.created_on))
if (args.last_seen_on != null) query.append("last_seen_on", String(args.last_seen_on))
if (args.error_code != null) query.append("error_code", String(args.error_code))
if (args.status != null) query.append("status", String(args.status))
if (args.level != null) query.append("level", String(args.level))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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