import {z} from 'zod'

export type GetApiApiV1ConfigSlosSlugArgs = {slug: string};

export type GetApiApiV1ConfigSlosSlugOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const configv1CollectionReferenceType = z.enum(["SIMPLE", "SERVICE"]);

export const configv1CollectionReference = z.object({type: configv1CollectionReferenceType.optional(), slug: z.string().optional()});

export const monitorSignalGrouping = z.object({label_names: z.array(z.string()).optional(), signal_per_series: z.boolean().optional()});

export const sLICustomIndicatorConfig = z.object({good_query_template: z.string().optional(), bad_query_template: z.string().optional(), total_query_template: z.string().optional()});

export const sLITimeSliceSize = z.enum(["TIMESLICE_SIZE_ONE_MINUTE", "TIMESLICE_SIZE_FIVE_MINUTES"]);

export const conditionOp = z.enum(["GEQ", "GT", "LEQ", "LT", "EQ", "NEQ", "EXISTS", "NOT_EXISTS"]);

export const sLITimeSliceCondition = z.object({op: conditionOp.optional(), value: z.number().optional()});

export const sLICustomTimeSliceIndicatorConfig = z.object({query_template: z.string().optional(), timeslice_size: sLITimeSliceSize.optional(), condition: sLITimeSliceCondition.optional()});

export const commonPromQLMatcherType = z.enum(["MatchEqual", "MatchRegexp", "MatchNotEqual", "MatchNotRegexp"]);

export const commonPromQLMatcher = z.object({type: commonPromQLMatcherType.optional(), name: z.string().optional(), value: z.string().optional()});

export const configv1SLI = z.object({custom_indicator: sLICustomIndicatorConfig.optional(), custom_timeslice_indicator: sLICustomTimeSliceIndicatorConfig.optional(), custom_dimension_labels: z.array(z.string()).optional(), additional_promql_filters: z.array(commonPromQLMatcher).optional()});

export const definitionTimeWindow = z.object({duration: z.string().optional()});

export const definitionBurnRateDefinition = z.object({window: z.string().optional(), budget: z.number().optional(), severity: z.string().optional(), labels: z.record(z.string(), z.string()).optional()});

export const sLODefinition = z.object({objective: z.number().optional(), time_window: definitionTimeWindow.optional(), burn_rate_alerting_config: z.array(definitionBurnRateDefinition).optional(), enable_burn_rate_alerting: z.boolean().optional()});

export const configv1SLO = z.object({slug: z.string().optional(), name: z.string().optional(), description: z.string().optional(), created_at: z.string().optional(), updated_at: z.string().optional(), collection_ref: configv1CollectionReference.optional(), notification_policy_slug: z.string().optional(), signal_grouping: monitorSignalGrouping.optional(), labels: z.record(z.string(), z.string()).optional(), annotations: z.record(z.string(), z.string()).optional(), sli: configv1SLI.optional(), definition: sLODefinition.optional()});

export const configv1ReadSLOResponse = z.object({slo: configv1SLO.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/v1/config/slos/{slug}
 */
export const getApiApiV1ConfigSlosSlug = async (args: GetApiApiV1ConfigSlosSlugArgs, options: GetApiApiV1ConfigSlosSlugOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/config/slos/${encodeURIComponent(String(args.slug))}${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(configv1ReadSLOResponse, await res.json())
};