import {z} from 'zod'

export type GetApiApiV1ContextIdAttributesArgs = {context_id: string, entity?: string | undefined, key?: string | undefined, limit?: number | undefined, cursor?: string | undefined, count?: boolean | undefined};

export type GetApiApiV1ContextIdAttributesOptions = {baseUrl: string, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const memoryCategory = z.enum(["identity", "knowledge", "context"]);

export const sourceRefJson = z.object({kind: z.string(), ref: z.string().nullable().optional(), sessionId: z.string().nullable().optional()});

export const attributeDetailJson = z.object({createdAt: z.string(), entity: z.string(), id: z.string(), importance: z.number(), key: z.string(), memoryCategory: memoryCategory, source: sourceRefJson.nullable().optional(), supersededBy: z.string().nullable().optional(), supersedes: z.string().nullable().optional(), validFrom: z.string().nullable().optional(), validUntil: z.string().nullable().optional(), value: z.string()});

export const pageMeta = z.object({hasMore: z.boolean(), nextCursor: z.string().nullable().optional(), totalSize: z.number().int().gte(0).nullable().optional()});

export const attributeListResponseJson = z.object({attributes: z.array(attributeDetailJson), page: pageMeta});

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
};

/**
 * List live attributes, newest first. Live means not superseded and inside its validity window; superseded values are reachable through the entity history endpoint. Paginated: follow `page.nextCursor`.
 * 
 * GET /api/v1/{context_id}/attributes
 */
export const getApiApiV1ContextIdAttributes = async (args: GetApiApiV1ContextIdAttributesArgs, options: GetApiApiV1ContextIdAttributesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.entity != null) query.append("entity", String(args.entity))
if (args.key != null) query.append("key", String(args.key))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.count != null) query.append("count", String(args.count))
if (apiKey !== undefined) headers.set('authorization', `Bearer ${apiKey}`)

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