import {z} from 'zod'

export type MemoryBlockCreateRequest = {name: string, content?: string | undefined, system_prompt_amendment?: string | undefined, injection_mode?: ('system_prompt' | 'user_instruction' | 'agent_file' | 'agent_tool') | undefined, access_mode?: ('read' | 'write' | 'read_write') | undefined, max_content_length?: number | undefined};

export type CreateApiMemoryBlocksArgs = {body: MemoryBlockCreateRequest};

export type CreateApiMemoryBlocksOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const memoryBlock = z.object({id: z.string(), name: z.string(), content: z.string(), system_prompt_amendment: z.string(), injection_mode: z.enum(["system_prompt", "user_instruction", "agent_file", "agent_tool"]), access_mode: z.enum(["read", "write", "read_write"]), user_id: z.string(), username: z.string().optional(), created_at: z.string(), updated_at: z.string(), is_public: z.boolean().optional(), is_owner: z.boolean().optional(), max_content_length: z.number().int().optional(), is_auto: z.boolean().optional(), user_count: z.number().int().optional(), group_count: z.number().int().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
};

/**
 * Create a Memory Block
 * 
 * POST /memory_blocks
 */
export const createApiMemoryBlocks = async (args: CreateApiMemoryBlocksArgs, options?: CreateApiMemoryBlocksOptions) => {
const {baseUrl = "https://h2ogpte.genai.h2o.ai/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/memory_blocks${query.size > 0 ? `?${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(memoryBlock, await res.json())
};