import {z} from 'zod'

export type AddVariantForm = {description?: string | undefined};

export type CreateApiApiV1ExperimentsExperimentIdVariantsArgs = {experimentId: string, body: AddVariantForm};

export type CreateApiApiV1ExperimentsExperimentIdVariantsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const errorEntity = z.object({errorCode: z.string().optional(), message: z.string().optional(), fieldName: z.string().optional()});

export const experimentVariant = z.object({id: z.string().optional(), name: z.string().optional(), weight: z.number().optional(), url: z.string().optional(), promoted: z.boolean().optional()});

export const trafficProportion = z.object({type: z.enum(["SPLIT_EVENLY", "CUSTOM_PERCENTAGES"]).optional(), variants: z.array(experimentVariant).optional()});

export const scheduling = z.object({startDate: z.string().optional(), endDate: z.string().optional()});

export const metric = z.object({name: z.string().optional(), description: z.string().optional(), category: z.enum(["DIFFERENTIATING_FEATURES", "PAID_FEATURES", "PLATFORM_SPECIFIC_CUSTOMIZATION", "SOPHISTICATED_CONTENT_ARCHITECTURE", "POSITIVE_USER_EXPERIENCE", "PLATFORM_SPECIFIC_DEVELOPMENT", "RECENT_ACTIVITY", "HISTORY_LEGACY_DEPRECATED_FEATURES"]).optional(), feature: z.enum(["CONTENTLETS", "LANGUAGES", "CONTENT_TYPES", "SITES", "URL_MAPS", "WORKFLOW", "USERS", "SITE_SEARCH", "IMAGE_API", "LAYOUT", "CONTENT_TYPE_FIELDS", "AI", "EXPERIMENTS"]).optional()});

export const goal = z.object({metric: metric.optional(), type: z.enum(["MINIMIZE", "MAXIMIZE"]).optional()});

export const goals = z.object({primary: goal.optional()});

export const targetingCondition = z.object({id: z.string().optional(), conditionKey: z.string().optional(), values: z.object({empty: z.boolean().optional()}).and(z.record(z.string(), z.string())).optional(), operator: z.enum(["AND", "OR"]).optional()});

export const runningId = z.object({id: z.string().optional(), startDate: z.string().optional(), endDate: z.string().optional()});

export const runningIds = z.object({ids: z.array(runningId).optional()});

export const experimentView = z.object({name: z.string().optional(), description: z.string().optional(), id: z.string().optional(), status: z.enum(["RUNNING", "SCHEDULED", "ENDED", "DRAFT", "ARCHIVED"]).optional(), trafficProportion: trafficProportion.optional(), scheduling: scheduling.optional(), trafficAllocation: z.number().optional(), creationDate: z.string().optional(), modDate: z.string().optional(), pageId: z.string().optional(), createdBy: z.string().optional(), lastModifiedBy: z.string().optional(), goals: goals.optional(), targetingConditions: z.array(targetingCondition).optional(), lookBackWindowExpireTime: z.number().int().optional(), runningIds: runningIds.optional(), createdByUserName: z.string().optional()});

export const messageEntity = z.object({message: z.string().optional()});

export const pagination = z.object({currentPage: z.number().int().optional(), perPage: z.number().int().optional(), totalEntries: z.number().int().optional()});

export const responseEntitySingleExperimentView = z.object({errors: z.array(errorEntity).optional(), entity: experimentView.optional(), messages: z.array(messageEntity).optional(), i18nMessagesMap: z.record(z.string(), z.string()).optional(), permissions: z.array(z.string()).optional(), pagination: pagination.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
};

/**
 * POST /api/v1/experiments/{experimentId}/variants
 */
export const createApiApiV1ExperimentsExperimentIdVariants = async (args: CreateApiApiV1ExperimentsExperimentIdVariantsArgs, options: CreateApiApiV1ExperimentsExperimentIdVariantsOptions) => {
const {baseUrl, 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/experiments/${encodeURIComponent(String(args.experimentId))}/variants${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(responseEntitySingleExperimentView, await res.json())
};