import {z} from 'zod'

export type GetApiDataClassesArgs = {correlationId?: string | undefined, status?: Array<string> | undefined, containsRules?: boolean | undefined, ruleType?: Array<string> | undefined, name?: string | undefined, description?: string | undefined, dataClassGroupId?: string | undefined, offset?: number | undefined, limit?: number | undefined, view?: string | undefined};

export type GetApiDataClassesOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const dataClassId = z.string();

export const dataClassName = z.string();

export const dataClassDescription = z.string();

export const dataClassStatus = z.string();

export const columnNameFilters = z.array(z.string());

export const columnTypeFilters = z.array(z.string());

export const allowNullValues = z.boolean();

export const allowEmptyValues = z.boolean();

export const confidenceThreshold = z.number().int().gte(0).lte(100);

export const createdBy = z.string();

export const createdOn = z.number().int();

export const lastModifiedBy = z.string();

export const lastModifiedOn = z.number().int();

export const regularExpressionBasedClassificationRule = z.object({type: z.string(), regularExpression: z.string().optional()});

export const dataType = z.string();

export const dataTypeBasedClassificationRule = z.object({type: z.string(), dataTypes: z.array(dataType).optional()});

export const listOfValuesBasedClassificationRule = z.object({type: z.string(), values: z.array(z.string()).optional()});

export const classificationRule = z.discriminatedUnion("type", [regularExpressionBasedClassificationRule, dataTypeBasedClassificationRule, listOfValuesBasedClassificationRule]);

export const classificationRules = z.array(classificationRule);

export const dataClass = z.object({id: dataClassId, name: dataClassName, description: dataClassDescription.optional(), status: dataClassStatus, columnNameFilters: columnNameFilters.optional(), columnTypeFilters: columnTypeFilters.optional(), allowNullValues: allowNullValues, allowEmptyValues: allowEmptyValues, confidenceThreshold: confidenceThreshold, createdBy: createdBy, createdOn: createdOn, lastModifiedBy: lastModifiedBy, lastModifiedOn: lastModifiedOn, rules: classificationRules.optional()});

export const dataClassPagedResponse = z.object({total: z.number().int().optional(), results: z.array(dataClass).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
};

/**
 * Find Data Classes
 * 
 * GET /dataClasses
 * 
 * Also accepts auth: jwtAuth, oauth2, oauth2
 */
export const getApiDataClasses = async (args: GetApiDataClassesArgs, options: GetApiDataClassesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.correlationId != null) query.append("correlationId", String(args.correlationId))
for (const item of args.status ?? []) query.append("status", String(item))
if (args.containsRules != null) query.append("containsRules", String(args.containsRules))
for (const item of args.ruleType ?? []) query.append("ruleType", String(item))
if (args.name != null) query.append("name", String(args.name))
if (args.description != null) query.append("description", String(args.description))
if (args.dataClassGroupId != null) query.append("dataClassGroupId", String(args.dataClassGroupId))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.view != null) query.append("view", String(args.view))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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