import {z} from 'zod'

export type FieldsPostRequest = {fieldName: string, fieldType: 'string' | 'number' | 'date' | 'bool'};

export type CreateApiV1FieldsArgs = {'Idempotency-Key'?: string | undefined, body: FieldsPostRequest};

export type CreateApiV1FieldsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const contactFieldDefinition = z.object({fieldName: z.string().min(1), fieldType: z.enum(["string", "number", "date", "bool"]), label: z.string().optional(), isCore: z.boolean().optional(), isFilterable: z.boolean().optional(), isSortable: z.boolean().optional(), isSearchable: z.boolean().optional(), coverage: z.object({percent: z.number().int().gte(0).lte(100), approximate: z.boolean(), topValues: z.array(z.object({value: z.string(), count: z.number().int().gte(0), percent: z.number().int().gte(0).lte(100)})), dominantValue: z.string().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
};

/**
 * Create a contact field
 * 
 * POST /v1/fields
 * 
 * Also accepts auth: apiKeyAuth
 */
export const createApiV1Fields = async (args: CreateApiV1FieldsArgs, options?: CreateApiV1FieldsOptions) => {
const {baseUrl = "https://brew.new/api", 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 (args['Idempotency-Key'] != null) headers.set("Idempotency-Key", String(args['Idempotency-Key']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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