import {z} from 'zod'

export type BaselineScenarioID = string;

export type BusinessEntityID = string;

export type GetApiV1BaselineForecastsMainMetricProjectionsArgs = {baseline_scenario_id: BaselineScenarioID, business_entity_id?: BusinessEntityID | undefined, offset?: number | undefined, limit?: number | undefined};

export type GetApiV1BaselineForecastsMainMetricProjectionsOptions = {baseUrl?: string | undefined, OAuth2ClientCredentialsProduction?: string | undefined, fetch?: typeof fetch | undefined};

export const mainMetricProjectionID = z.string();

export const businessEntityID = z.string();

export const baselineScenarioID = z.string();

export const year = z.string();

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

export const mainMetricProjectionProjectionMethod = z.union([z.object({projectionMethod: z.literal("HISTORICAL_AVERAGE_GROWTH_RATE"), baseYear: year, historicalPeriodStart: year, historicalPeriodEnd: year}), z.object({projectionMethod: z.literal("HISTORICAL_AVERAGE_VALUE"), historicalPeriodStart: year, historicalPeriodEnd: year}), z.object({projectionMethod: z.literal("HISTORICAL_FIXED_VALUE"), baseYear: year}), z.object({projectionMethod: z.literal("CUSTOM_DATA"), yearlyValues: z.array(yearData)}), z.object({projectionMethod: z.literal("CUSTOM_GROWTH_RATE"), baseYear: year, customGrowthRate: z.number()}), z.object({projectionMethod: z.literal("CUSTOM_YEARLY_PERCENTAGE_CHANGES"), baseYear: year, yearlyValues: z.array(yearData)})]);

export const mainMetricProjectionConfig = z.object({id: mainMetricProjectionID, processID: businessEntityID, baselineScenarioID: baselineScenarioID, startYear: year, endYear: year, projectionMethod: mainMetricProjectionProjectionMethod});

export const functionalUnitID = z.string();

export const unit = z.string();

export const nullableOrganizationID = z.string().nullable();

export const nullableIndustryTaxonomySubIndustryCode = z.string().nullable();

export const functionalUnitMeasurementType = z.enum(["COUNTER", "GAUGE"]);

export const functionalUnit = z.object({id: functionalUnitID, name: z.string(), description: z.string().optional(), defaultDisplayUnit: unit, supportedUnits: z.array(unit), orgID: nullableOrganizationID.optional(), subIndustryCode: nullableIndustryTaxonomySubIndustryCode, measurementType: functionalUnitMeasurementType.optional()});

export const mainMetricProjectionData = z.object({id: mainMetricProjectionID, processID: businessEntityID, startYear: year, endYear: year, valuesBaseYear: year, functionalUnit: functionalUnit.optional(), displayUnit: unit, historicalValues: z.array(yearData), projectedValues: z.array(yearData)});

export const mainMetricProjection = z.object({config: mainMetricProjectionConfig, projection: mainMetricProjectionData});

export const paginationResult = z.object({offset: z.number().int(), limit: z.number().int(), total: z.number().int(), hasMore: z.boolean(), nextOffset: z.number().int().nullable().optional(), previousOffset: z.number().int().nullable().optional()});

export const getApiV1BaselineForecastsMainMetricProjectionsResponse = z.object({projections: z.array(mainMetricProjection).optional(), pagination: paginationResult.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 main metric projections
 * 
 * GET /v1/baseline_forecasts/main_metric_projections
 * 
 * Also accepts auth: OAuth2AuthCodeProduction
 */
export const getApiV1BaselineForecastsMainMetricProjections = async (args: GetApiV1BaselineForecastsMainMetricProjectionsArgs, options?: GetApiV1BaselineForecastsMainMetricProjectionsOptions) => {
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.baseline_scenario_id != null) query.append("baseline_scenario_id", String(args.baseline_scenario_id))
if (args.business_entity_id != null) query.append("business_entity_id", String(args.business_entity_id))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (OAuth2ClientCredentialsProduction !== undefined) headers.set('authorization', `Bearer ${OAuth2ClientCredentialsProduction}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/baseline_forecasts/main_metric_projections${query.size > 0 ? `?${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(getApiV1BaselineForecastsMainMetricProjectionsResponse, await res.json())
};