import {z} from 'zod'

export type GatewayQueryUsageCostsRequestScope = 'SCOPE_UNSPECIFIED' | 'ACCOUNT' | 'SELF';

export type QueryUsageCostsRequestDimension = 'DIMENSION_UNSPECIFIED' | 'HOUR' | 'MODEL' | 'USER' | 'API_KEY' | 'DAY';

export type GatewayUsageCostFilter = {model?: string | undefined, user?: string | undefined, apiKeyId?: string | undefined, sessionId?: string | undefined};

export type GatewayGatewayQueryUsageCostsBody = {startTime?: string | undefined, endTime?: string | undefined, scope?: GatewayQueryUsageCostsRequestScope | undefined, groupBy?: Array<QueryUsageCostsRequestDimension> | undefined, filter?: GatewayUsageCostFilter | undefined, pageSize?: number | undefined, pageToken?: string | undefined};

export type CreateApiV1AccountsAccountIdUsageCostsQueryArgs = {account_id: string, body: GatewayGatewayQueryUsageCostsBody};

export type CreateApiV1AccountsAccountIdUsageCostsQueryOptions = {baseUrl: string, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const queryUsageCostsRequestDimension = z.enum(["DIMENSION_UNSPECIFIED", "HOUR", "MODEL", "USER", "API_KEY", "DAY"]);

export const gatewayUsageCostDimensions = z.object({startTime: z.string().optional(), model: z.string().optional(), user: z.string().optional(), apiKeyId: z.string().optional(), unattributedDimensions: z.array(queryUsageCostsRequestDimension).optional(), unknownModel: z.boolean().optional()});

export const typeMoney = z.object({currencyCode: z.string().optional(), units: z.string().optional(), nanos: z.number().int().optional()});

export const gatewayUsageCostRow = z.object({dimensions: gatewayUsageCostDimensions.optional(), subtotal: typeMoney.optional()});

export const queryUsageCostsResponseAttributionCompleteness = z.enum(["ATTRIBUTION_COMPLETENESS_UNSPECIFIED", "COMPLETE", "INCOMPLETE", "UNKNOWN"]);

export const gatewayQueryUsageCostsResponse = z.object({rows: z.array(gatewayUsageCostRow).optional(), nextPageToken: z.string().optional(), subtotal: typeMoney.optional(), evaluationTime: z.string().optional(), attributionCompleteness: queryUsageCostsResponseAttributionCompleteness.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
};

/**
 * Query grouped usage cost subtotals for an account.
 * 
 * POST /v1/accounts/{account_id}/usageCosts:query
 */
export const createApiV1AccountsAccountIdUsageCostsQuery = async (args: CreateApiV1AccountsAccountIdUsageCostsQueryArgs, options: CreateApiV1AccountsAccountIdUsageCostsQueryOptions) => {
const {baseUrl, 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 = `${baseUrl.replace(/\/+$/, '')}/v1/accounts/${encodeURIComponent(String(args.account_id))}/usageCosts:query${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", 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(gatewayQueryUsageCostsResponse, await res.json())
};