import {z} from 'zod'

export type RegionalMonthsInput = {calendar: 'tamil' | 'malayalam' | 'bengali' | 'gujarati' | 'marathi', year: number, latitude: number | null, longitude: number | null, timezone?: string | undefined, timezoneOffset?: (number | null) | undefined, ayanamsaId?: (number | null) | undefined, ayanamsa?: ('fagan-bradley' | 'lahiri' | 'de-luce' | 'raman' | 'krishnamurti' | 'kp' | 'yukteshwar' | 'jn-bhasin' | 'true-citra' | 'djwhal-khul') | undefined};

export type CreateApiVedicCalendarRegionalMonthsArgs = {fields?: string | undefined, precision?: number | undefined, 'Idempotency-Key'?: string | undefined, body: RegionalMonthsInput};

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

export const createApiVedicCalendarRegionalMonthsResponse = z.object({ok: z.boolean().optional(), data: z.object({calendar: z.string().nullable().optional(), year: z.number().nullable().optional(), place: z.object({latitude: z.number().nullable().optional(), longitude: z.number().nullable().optional(), timezone: z.string().nullable().optional(), timezoneOffset: z.unknown(), ayanamsaId: z.number().nullable().optional()}).nullable().optional(), months: z.array(z.object({name: z.string().nullable().optional(), number: z.number().nullable().optional(), sign: z.string().nullable().optional(), sankranti: z.string().nullable().optional(), start: z.string().nullable().optional(), end: z.string().nullable().optional(), days: z.number().nullable().optional(), year: z.object({era: z.string().nullable().optional(), number: z.unknown(), name: z.string().nullable().optional()}).nullable().optional()}).nullable()).nullable().optional(), rule: z.string().nullable().optional()}).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
};

/**
 * Regional calendar: month boundaries for a year
 * 
 * POST /vedic/calendar/regional/months
 */
export const createApiVedicCalendarRegionalMonths = async (args: CreateApiVedicCalendarRegionalMonthsArgs, options?: CreateApiVedicCalendarRegionalMonthsOptions) => {
const {baseUrl = "https://api.astroway.info/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.fields != null) query.append("fields", String(args.fields))
if (args.precision != null) query.append("precision", String(args.precision))
if (args['Idempotency-Key'] != null) headers.set("Idempotency-Key", String(args['Idempotency-Key']))
if (ApiKeyAuth !== undefined) headers.set("X-Api-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/vedic/calendar/regional/months${query.size > 0 ? `?${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(createApiVedicCalendarRegionalMonthsResponse, await res.json())
};