import {z} from 'zod'

export type CreateApiApiV1GetSmtDataArgs = {body: {requestId: string, includeIntervals?: boolean | undefined, months?: number | undefined}};

export type CreateApiApiV1GetSmtDataOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiApiV1GetSmtDataResponse = z.object({status: z.enum(["needs_clarification", "pending", "complete", "error"]), requestId: z.string().nullable(), reused: z.boolean(), step: z.string(), checkAfterSeconds: z.number().optional(), esiId: z.string().nullable(), utility: z.string().nullable(), serviceAddress: z.string().nullable(), dataStart: z.string().nullable(), dataEnd: z.string().nullable(), readingCount: z.number(), monthlyAggregates: z.array(z.object({month: z.string(), totalImportsKwh: z.number(), totalExportsKwh: z.number(), netKwh: z.number(), peakDemandKw: z.number(), daysOfData: z.number()})), avgMonthlyImportKwh: z.number().nullable(), avgMonthlyExportKwh: z.number().nullable(), peakDemandKw: z.number().nullable(), hasSolarExports: z.boolean().nullable(), intervals: z.array(z.object({timestamp: z.string(), importKwh: z.number(), exportKwh: z.number()})).optional(), intervalsTruncated: z.boolean().optional(), exports: z.object({csv: z.string(), aurora: z.string(), opensolar: z.string(), solargraf: z.string()}).optional(), errorCode: z.string().optional(), errorMessage: z.string().optional(), candidates: z.array(z.object({esiId: z.string(), formatted: z.string(), utility: z.string().nullable()})).optional(), summary: z.string()});

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 Smart Meter Texas Data
 * 
 * POST /api/v1/get-smt-data
 */
export const createApiApiV1GetSmtData = async (args: CreateApiApiV1GetSmtDataArgs, options?: CreateApiApiV1GetSmtDataOptions) => {
const {baseUrl = "https://meterplan.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/get-smt-data${query.size > 0 ? `?${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(createApiApiV1GetSmtDataResponse, await res.json())
};