import {z} from 'zod'

export type ConsolidateRequestJson = {dryRun?: boolean | undefined, factLimit?: (number | null) | undefined, observationLimit?: (number | null) | undefined};

export type CreateApiApiV1ContextIdConsolidateArgs = {context_id: string, body: ConsolidateRequestJson};

export type CreateApiApiV1ContextIdConsolidateOptions = {baseUrl: string, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const decisionKind = z.enum(["create", "update", "supersede"]);

export const consolidateOutcomeJson = z.object({entityName: z.string(), key: z.string(), kind: decisionKind, observationId: z.string().nullable().optional(), persisted: z.boolean(), proofCount: z.number().int().gte(0), rationale: z.string().nullable().optional(), value: z.string()});

export const consolidateResponseJson = z.object({created: z.number().int().gte(0), dryRun: z.boolean(), outcomes: z.array(consolidateOutcomeJson), superseded: z.number().int().gte(0), traceId: z.string(), updated: z.number().int().gte(0)});

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
};

/**
 * Phase 11b: pool recent facts and consolidate into observations. Scope-gated: only facts in the caller's `memory:read` region are pooled, and only groups in the caller's `memory:write` region are persisted (others are returned as dry-run previews).
 * 
 * POST /api/v1/{context_id}/consolidate
 */
export const createApiApiV1ContextIdConsolidate = async (args: CreateApiApiV1ContextIdConsolidateArgs, options: CreateApiApiV1ContextIdConsolidateOptions) => {
const {baseUrl, fetch: fetchFn = fetch, apiKey} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/${encodeURIComponent(String(args.context_id))}/consolidate${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(consolidateResponseJson, await res.json())
};