import {z} from 'zod'

export type GetApiV1KnowledgeGapsClustersClusterIdArgs = {cluster_id: string};

export type GetApiV1KnowledgeGapsClustersClusterIdOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const claimRef = z.object({claim_text: z.string(), evidence: z.array(z.record(z.string(), z.unknown())).optional()});

export const clusterTimeseriesPoint = z.object({day: z.string(), member_count: z.number().int(), impact_score: z.number(), status: z.string()});

export const clusterDetailResponse = z.object({cluster_id: z.string(), organization_id: z.string(), agent_id: z.string().nullable().optional(), label: z.string(), label_summary: z.string().nullable().optional(), gap_type: z.string(), product_area: z.string().nullable().optional(), affected_feature: z.string().nullable().optional(), status: z.string(), priority: z.string().nullable().optional(), owner_user_id: z.string().nullable().optional(), acknowledged_at: z.string().nullable().optional(), fixed_at: z.string().nullable().optional(), reopened_at: z.string().nullable().optional(), archived_at: z.string().nullable().optional(), merged_into_cluster_id: z.string().nullable().optional(), first_seen_at: z.string(), last_seen_at: z.string(), member_count: z.number().int(), impact_score: z.number().nullable().optional(), impact_score_breakdown: z.record(z.string(), z.unknown()).nullable().optional(), representative_questions: z.array(z.string()).optional(), claims: z.array(claimRef).optional(), evidence_doc_ids: z.array(z.string()).optional(), timeseries: z.array(clusterTimeseriesPoint).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
};

/**
 * Detail view of a single knowledge-gap cluster
 * 
 * GET /v1/knowledge-gaps/clusters/{cluster_id}
 */
export const getApiV1KnowledgeGapsClustersClusterId = async (args: GetApiV1KnowledgeGapsClustersClusterIdArgs, options: GetApiV1KnowledgeGapsClustersClusterIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/knowledge-gaps/clusters/${encodeURIComponent(String(args.cluster_id))}${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(clusterDetailResponse, await res.json())
};