import {z} from 'zod'

export type BillableMetricFilterInput = {key: string, values: Array<string>};

export type BillableMetricBaseInput = {name?: string | undefined, code?: string | undefined, description?: (string | null) | undefined, recurring?: boolean | undefined, expression?: (string | null) | undefined, rounding_function?: ('ceil' | 'floor' | 'round' | 'null' | null) | undefined, rounding_precision?: (number | null) | undefined, field_name?: (string | null) | undefined, aggregation_type?: ('count_agg' | 'sum_agg' | 'max_agg' | 'unique_count_agg' | 'weighted_sum_agg' | 'latest_agg') | undefined, weighted_interval?: ('seconds' | 'null' | null) | undefined, filters?: Array<BillableMetricFilterInput> | undefined};

export type BillableMetricUpdateInput = {billable_metric: BillableMetricBaseInput};

export type UpdateApiBillableMetricsCodeArgs = {body: BillableMetricUpdateInput};

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

export const billableMetricFilterObject = z.object({key: z.string(), values: z.array(z.string())});

export const billableMetricObject = z.object({lago_id: z.string(), name: z.string(), code: z.string(), description: z.string().nullable(), recurring: z.boolean(), rounding_function: z.enum(["ceil", "floor", "round", "null"]).nullable(), rounding_precision: z.number().int().nullable(), created_at: z.string(), expression: z.string().nullable(), field_name: z.string().nullable(), aggregation_type: z.enum(["count_agg", "sum_agg", "max_agg", "unique_count_agg", "weighted_sum_agg", "latest_agg"]), weighted_interval: z.enum(["seconds", "null"]).nullable(), filters: z.array(billableMetricFilterObject)});

export const billableMetric = z.object({billable_metric: billableMetricObject});

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
};

/**
 * Update a billable metric
 * 
 * PUT /billable_metrics/{code}
 */
export const updateApiBillableMetricsCode = async (args: UpdateApiBillableMetricsCodeArgs, options?: UpdateApiBillableMetricsCodeOptions) => {
const {baseUrl = "https://api.getlago.com/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/billable_metrics/${encodeURIComponent(String(args.code))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(billableMetric, await res.json())
};