import {z} from 'zod'

export type GetApiV1KnowledgeGapsSessionsSessionIdAnalysisArgs = {session_id: string};

export type GetApiV1KnowledgeGapsSessionsSessionIdAnalysisOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const analysisJobSummary = z.object({job_id: z.string(), status: z.string(), attempts: z.number().int(), current_stage: z.string().nullable().optional(), skip_reason: z.string().nullable().optional(), error_message: z.string().nullable().optional(), started_at: z.string().nullable().optional(), completed_at: z.string().nullable().optional(), failed_at: z.string().nullable().optional(), created_at: z.string()});

export const analysisResultSummary = z.object({deep_analysis_required: z.boolean().nullable().optional(), decision_source: z.string().nullable().optional(), decision_reason: z.string().nullable().optional(), knowledge_gap_detected: z.boolean().nullable().optional(), analysis_confidence: z.number().nullable().optional(), candidate_count: z.number().int().nullable().optional(), total_gap_events: z.number().int().nullable().optional(), deep_analysis_reasons: z.array(z.record(z.string(), z.unknown())).nullable().optional(), unresolved_candidates: z.array(z.record(z.string(), z.unknown())).nullable().optional(), classified_gaps: z.array(z.record(z.string(), z.unknown())).nullable().optional(), retrieval_validation_results: z.array(z.record(z.string(), z.unknown())).nullable().optional()});

export const gapEventSummary = z.object({gap_event_id: z.string(), candidate_id: z.string(), canonical_question: z.string(), effective_gap_type: z.string(), original_gap_type: z.string(), corrected_gap_type: z.string().nullable().optional(), severity: z.string(), completion_impact: z.string().nullable().optional(), confidence: z.number(), validation_confidence: z.number().nullable().optional(), product_area: z.string().nullable().optional(), cluster_id: z.string().nullable().optional(), claims: z.array(z.record(z.string(), z.unknown())).optional(), retrieved_doc_ids: z.array(z.string()).optional(), cited_doc_ids: z.array(z.string()).optional(), implicated_doc_ids: z.array(z.string()).optional()});

export const clusterStub = z.object({cluster_id: z.string(), label: z.string(), status: z.string(), priority: z.string().nullable().optional()});

export const sessionAnalysisDetailResponse = z.object({session_id: z.string(), organization_id: z.string(), agent_id: z.string().nullable().optional(), knowledge_gap_analysis_outcome: z.string().nullable().optional(), job: analysisJobSummary.nullable().optional(), result: analysisResultSummary.nullable().optional(), gap_events: z.array(gapEventSummary).optional(), linked_clusters: z.array(clusterStub).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
};

/**
 * Per-session analysis result, signals, gap events, and linked clusters
 * 
 * GET /v1/knowledge-gaps/sessions/{session_id}/analysis
 */
export const getApiV1KnowledgeGapsSessionsSessionIdAnalysis = async (args: GetApiV1KnowledgeGapsSessionsSessionIdAnalysisArgs, options: GetApiV1KnowledgeGapsSessionsSessionIdAnalysisOptions) => {
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/sessions/${encodeURIComponent(String(args.session_id))}/analysis${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(sessionAnalysisDetailResponse, await res.json())
};