import {z} from 'zod'

export type GetApiApiV0AgentSessionsSessionIdMessagesArgs = {session_id: string, after_sequence?: (number | null) | undefined};

export type GetApiApiV0AgentSessionsSessionIdMessagesOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const agentAttachmentGetResponse = z.object({id: z.string(), filename: z.string(), content_type: z.string(), size_bytes: z.number().int(), url: z.string().nullable().optional()});

export const kgSourceRef = z.object({document_public_id: z.string(), document_name: z.string().nullable().optional(), page_number: z.number().int().nullable().optional()});

export const kgNodeRef = z.object({node_id: z.string(), name: z.string(), type_id: z.string().nullable().optional(), type_name: z.string().nullable().optional(), ontology: z.string().nullable().optional(), tier: z.string().nullable().optional(), attributes: z.record(z.string(), z.unknown()).optional(), attribute_sources: z.record(z.string(), z.array(kgSourceRef)).optional()});

export const kgResultRefs = z.object({knowledge_base_id: z.string(), nodes: z.array(kgNodeRef).optional(), groundings: z.array(kgSourceRef).optional()});

export const agentMessageFeedbackResponse = z.object({id: z.string(), rating: z.string(), reason: z.string().nullable().optional(), comment: z.string().nullable().optional(), created_at: z.string(), updated_at: z.string()});

export const agentMessageGetResponse = z.object({id: z.string(), run_id: z.string().nullable().optional(), role: z.string(), content: z.string().nullable().optional(), tool_calls: z.array(z.record(z.string(), z.unknown())).nullable().optional(), tool_call_id: z.string().nullable().optional(), attachments: z.array(agentAttachmentGetResponse).nullable().optional(), model_names: z.array(z.string()).nullable().optional(), kg_refs: kgResultRefs.nullable().optional(), feedback: agentMessageFeedbackResponse.nullable().optional(), sequence_number: z.number().int(), created_at: z.string()});

export const getApiApiV0AgentSessionsSessionIdMessagesResponse = z.array(agentMessageGetResponse);

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
};

/**
 * Get session messages
 * 
 * GET /api/v0/agent/sessions/{session_id}/messages
 */
export const getApiApiV0AgentSessionsSessionIdMessages = async (args: GetApiApiV0AgentSessionsSessionIdMessagesArgs, options: GetApiApiV0AgentSessionsSessionIdMessagesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.after_sequence != null) query.append("after_sequence", String(args.after_sequence))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v0/agent/sessions/${encodeURIComponent(String(args.session_id))}/messages${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(getApiApiV0AgentSessionsSessionIdMessagesResponse, await res.json())
};