import {z} from 'zod'

export type BusinessEntityID = string;

export type BaselineScenarioID = string;

export type GetApiV1BaselineForecastsProjectionsSummariesBusinessEntitySummaryArgs = {business_entity_id?: BusinessEntityID | undefined, baseline_scenario_id?: BaselineScenarioID | undefined};

export type GetApiV1BaselineForecastsProjectionsSummariesBusinessEntitySummaryOptions = {baseUrl?: string | undefined, OAuth2ClientCredentialsProduction?: string | undefined, fetch?: typeof fetch | undefined};

export const forecastSummaryDataPointValue = z.object({mainMetric: z.number().nullable().optional(), scope1Emissions: z.number().nullable().optional(), scope2Emissions: z.number().nullable().optional(), scope3Emissions: z.number().nullable().optional(), emissionsIntensity: z.number().nullable().optional()});

export const forecastSummaryDataPoint = z.object({year: z.number().int(), value: forecastSummaryDataPointValue});

export const businessEntityBaselineForecastSummary = z.object({functionalUnitID: z.string().nullable().optional(), forecastStartYear: z.number().int(), mainMetricDisplayUnit: z.string().nullable().optional(), data: z.array(forecastSummaryDataPoint)});

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 forecast summary for the organization or a specific business entity
 * 
 * GET /v1/baseline_forecasts/projections_summaries/business_entity_summary
 * 
 * Also accepts auth: OAuth2AuthCodeProduction
 */
export const getApiV1BaselineForecastsProjectionsSummariesBusinessEntitySummary = async (args: GetApiV1BaselineForecastsProjectionsSummariesBusinessEntitySummaryArgs, options?: GetApiV1BaselineForecastsProjectionsSummariesBusinessEntitySummaryOptions) => {
const {baseUrl = "https://api.sinai.com", fetch: fetchFn = fetch, OAuth2ClientCredentialsProduction} = options ?? {}

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

if (args.business_entity_id != null) query.append("business_entity_id", String(args.business_entity_id))
if (args.baseline_scenario_id != null) query.append("baseline_scenario_id", String(args.baseline_scenario_id))
if (OAuth2ClientCredentialsProduction !== undefined) headers.set('authorization', `Bearer ${OAuth2ClientCredentialsProduction}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/baseline_forecasts/projections_summaries/business_entity_summary${query.size > 0 ? `?${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(businessEntityBaselineForecastSummary, await res.json())
};