import {z} from 'zod'

export type GetApiV4AdminLakeHealthArgs = {teamIds?: (Array<string | string> | null) | undefined};

export type GetApiV4AdminLakeHealthOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const duckLakeSeverity = z.enum(["healthy", "warning", "critical"]);

export const duckLakeTeamHealth = z.object({teamSchema: z.string(), teamId: z.union([z.string(), z.string()]), teamDomain: z.string().nullable().optional(), integrationId: z.union([z.string(), z.string()]).nullable().optional(), dataFiles: z.number().int(), snapshots: z.number().int(), columnStats: z.number().int(), deleteFiles: z.number().int(), severity: duckLakeSeverity, healthScore: z.number().int()});

export const duckLakeHealthReport = z.object({environment: z.string(), timestamp: z.string(), totalTeams: z.number().int(), healthyCount: z.number().int(), warningCount: z.number().int(), criticalCount: z.number().int(), teams: z.array(duckLakeTeamHealth)});

export const responseMeta = z.object({requestId: z.string().optional(), timestamp: z.string().optional(), durationMs: z.number().int().nullable().optional()});

export const successResponseDuckLakeHealthReport = z.object({success: z.literal(true), data: duckLakeHealthReport, meta: responseMeta.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
};

/**
 * Check the health of the lake catalog
 * 
 * GET /v4/admin/lake/health
 */
export const getApiV4AdminLakeHealth = async (args: GetApiV4AdminLakeHealthArgs, options: GetApiV4AdminLakeHealthOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

for (const item of args.teamIds ?? []) query.append("teamIds", String(item))

const url = `${baseUrl.replace(/\/+$/, '')}/v4/admin/lake/health${query.size > 0 ? `?${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(successResponseDuckLakeHealthReport, await res.json())
};