import {z} from 'zod'

export type GetApiApiV1TriggerUsageArgs = {from?: string | undefined, to?: string | undefined, period?: ('24h' | '7d' | '30d') | undefined};

export type GetApiApiV1TriggerUsageOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const triggersTriggerUsageBucket = z.enum(["TRIGGER_USAGE_BUCKET_DAY", "TRIGGER_USAGE_BUCKET_HOUR"]);

export const triggersTriggerUsageDay = z.object({date: z.string().optional(), units: z.string().optional()});

export const triggersTriggerUsageHour = z.object({start: z.string().optional(), units: z.string().optional()});

export const triggersGetTriggerUsageResponse = z.object({bucket: triggersTriggerUsageBucket.optional(), current_hour: z.string().optional(), days: z.array(triggersTriggerUsageDay).optional(), from: z.string().optional(), hours: z.array(triggersTriggerUsageHour).optional(), period: z.string().optional(), to: z.string().optional(), today: z.string().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 metered trigger usage
 * 
 * GET /api/v1/trigger-usage
 */
export const getApiApiV1TriggerUsage = async (args: GetApiApiV1TriggerUsageArgs, options?: GetApiApiV1TriggerUsageOptions) => {
const {baseUrl = "https://$SCALEKIT_ENVIRONMENT_URL", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.period != null) query.append("period", String(args.period))
if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/trigger-usage${query.size > 0 ? `?${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(triggersGetTriggerUsageResponse, await res.json())
};