import {z} from 'zod'

export type AssetAttachmentInput = {asset_id: string, title?: (string | null) | undefined};

export type ExperimentVariantInput = {label: string, color?: (string | null) | undefined, headline?: (string | null) | undefined, attachments?: Array<AssetAttachmentInput> | undefined};

export type ExperimentFlowPositionInput = {x: number, y: number};

export type ExperimentFlowNodeInput = {id: string, name: string, position: ExperimentFlowPositionInput, isStart?: boolean | undefined, isEnd?: boolean | undefined, attachment?: (AssetAttachmentInput | null) | undefined};

export type ExperimentFlowEdgeInput = {id: string, source: string, target: string, variant: 'shared' | 'A' | 'B'};

export type ExperimentFlowInput = {nodes: Array<ExperimentFlowNodeInput>, edges: Array<ExperimentFlowEdgeInput>};

export type CreateExperimentRequest = {population_id: string, name: string, variants: Array<ExperimentVariantInput>, category: 'creatives' | 'messaging' | 'products' | 'websites', context?: (string | null) | undefined, demographic_filter?: ({[key: string]: Array<string>} | null) | undefined, flow?: (ExperimentFlowInput | null) | undefined};

export type PatchApiWorkspacesWorkspaceIdExperimentsExperimentIdArgs = {experiment_id: string, workspace_id: string, body: CreateExperimentRequest};

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

export const updateExperimentResponse = z.object({status: z.literal("draft"), experiment_id: z.string(), answer: 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
};

/**
 * Update Experiment
 * 
 * PATCH /workspaces/{workspace_id}/experiments/{experiment_id}
 */
export const patchApiWorkspacesWorkspaceIdExperimentsExperimentId = async (args: PatchApiWorkspacesWorkspaceIdExperimentsExperimentIdArgs, options: PatchApiWorkspacesWorkspaceIdExperimentsExperimentIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/workspaces/${encodeURIComponent(String(args.workspace_id))}/experiments/${encodeURIComponent(String(args.experiment_id))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PATCH", 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(updateExperimentResponse, await res.json())
};