import {z} from 'zod'

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

export const backendAuthInformation = z.object({mode: z.string().nullable().optional(), oAuthAuthority: z.string().nullable().optional(), oAuthAudience: z.string().nullable().optional()});

export const backendDatabaseInformation = z.object({type: z.string().nullable().optional(), name: z.string().nullable().optional(), version: z.string().nullable().optional(), edition: z.string().nullable().optional()});

export const backendAuditTrailInformation = z.object({script: z.boolean().optional(), lookup: z.boolean().optional(), input: z.boolean().optional(), payrun: z.boolean().optional(), report: z.boolean().optional()});

export const backendCorsInformation = z.object({isActive: z.boolean().optional(), allowedOrigins: z.array(z.string()).nullable().optional()});

export const backendRateLimitingInformation = z.object({isActive: z.boolean().optional(), globalPermitLimit: z.number().int().optional(), globalWindowSeconds: z.number().int().optional(), payrunJobStartPermitLimit: z.number().int().optional(), payrunJobStartWindowSeconds: z.number().int().optional()});

export const tenantIsolationLevel = z.enum(["None", "Consolidation", "Read", "Write"]);

export const backendRuntimeInformation = z.object({maxParallelEmployees: z.number().int().optional(), maxRetroPayrunPeriods: z.number().int().optional(), dbCommandTimeoutSeconds: z.number().int().optional(), dbTransactionTimeoutSeconds: z.number().int().optional(), assemblyCacheTimeoutSeconds: z.number().int().optional(), webhookTimeoutSeconds: z.number().int().optional(), scriptSafetyAnalysis: z.boolean().optional(), auditTrail: backendAuditTrailInformation.optional(), cors: backendCorsInformation.optional(), rateLimiting: backendRateLimitingInformation.optional(), tenantIsolationLevel: tenantIsolationLevel.optional()});

export const backendInformation = z.object({version: z.string().nullable().optional(), buildDate: z.string().optional(), apiVersion: z.string().nullable().optional(), apiName: z.string().nullable().optional(), authentication: backendAuthInformation.optional(), database: backendDatabaseInformation.optional(), runtime: backendRuntimeInformation.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 /api/admin/information
 */
export const getApiApiAdminInformation = async (options: GetApiApiAdminInformationOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

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