import {z} from 'zod'

export type TriggerNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'trigger', trigger_type?: ('manual' | 'schedule' | 'webhook' | 'gateway' | 'embed' | 'email' | 'object-store' | 'record' | 'task' | 'email-delivery' | 'mail') | undefined, payload: {[key: string]: unknown}};

export type AgentNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'agent', payload: {agent?: ({name: string, llm_provider: 'claude' | 'anthropic', model: string, description?: string | undefined, behaviour?: string | undefined, output_schema?: {[key: string]: string} | undefined, has_tools?: boolean | undefined, tools?: Array<string> | undefined, knowledge?: Array<string> | undefined, timeout?: number | undefined}) | undefined, subject?: string | undefined, node_subject?: string | undefined, prompt?: (string | Record<string, never>) | undefined, await?: boolean | undefined, knowledge?: Array<string> | undefined}};

export type NodeOptions = {flat_map?: boolean | undefined, backoff_ms?: number | undefined, timeout?: number | undefined, attempts?: number | undefined, ignore_response_codes?: Array<number> | undefined};

export type FunctionNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'function', subject: string, payload: unknown, response_map: unknown, options?: NodeOptions | undefined};

export type HttpPayload = {base_url?: string | undefined, url: string, method: string, data?: Record<string, never> | undefined, params?: Record<string, never> | undefined, query?: Record<string, never> | undefined, headers?: {[key: string]: string} | undefined, timeout?: number | undefined};

export type IntegrationNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'integration', integration_id?: string | undefined, request_type_id?: string | undefined, oauth?: string | undefined, payload: HttpPayload, options?: NodeOptions | undefined};

export type HttpNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'http', payload: HttpPayload, options?: NodeOptions | undefined};

export type FlowNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'flow', subject: string, payload: unknown, await?: boolean | undefined, response_map: unknown, options?: NodeOptions | undefined};

export type EvalNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'eval', payload: {code: string, params: {[key: string]: unknown}}, options?: NodeOptions | undefined};

export type ConditionNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'condition', payload: {rules?: (Array<{if?: string | undefined, then?: Array<string> | undefined, else?: Array<string> | undefined}>) | undefined}};

export type RulesNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'rules', payload: {rules: Record<string, never>, facts?: Record<string, never> | undefined, context?: Record<string, never> | undefined}};

export type MapNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'map', payload: Record<string, never> | Array<unknown>, options?: ({flat_map?: boolean | undefined}) | undefined};

export type StaticNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'static', payload: {[key: string]: unknown}};

export type DelayNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'delay', payload: {time_ms: number}};

export type ScheduleNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'schedule', payload: {flow_subject: string, trigger: unknown, trigger_in?: string | undefined, trigger_on?: string | undefined}};

export type EscalationPayload = {message: string, title?: string | undefined, description?: string | undefined, priority?: string | undefined, assignees?: string | undefined, fields?: ({[key: string]: unknown} | string) | undefined, task_id?: string | undefined, keep_status?: boolean | undefined};

export type InputNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'input', payload: EscalationPayload};

export type HumanInTheLoopNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'human-in-the-loop', payload: EscalationPayload};

export type QuivaEndpointNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'quiva-endpoint', subject: string, payload: unknown};

export type ErrorNodeData = {id: string, name?: string | undefined, description?: string | undefined, node_type: 'error', payload: {status_code: number, message?: string | undefined}};

export type NodeData = TriggerNodeData | AgentNodeData | FunctionNodeData | IntegrationNodeData | HttpNodeData | FlowNodeData | EvalNodeData | ConditionNodeData | RulesNodeData | MapNodeData | StaticNodeData | DelayNodeData | ScheduleNodeData | InputNodeData | HumanInTheLoopNodeData | QuivaEndpointNodeData | ErrorNodeData;

export type CreateNodeRequest = {collection: string, data: NodeData};

export type CreateApiHubNodesArgs = {body: CreateNodeRequest};

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

export const modified = z.number().int();

export const createNodeResponse = z.object({subject: z.string().optional(), collection: z.string().optional(), data: z.object({}).optional(), type: z.string().optional(), modified: modified.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 new node
 * 
 * POST /hub/nodes
 * 
 * Also accepts auth: apiKeyAuth
 */
export const createApiHubNodes = async (args: CreateApiHubNodesArgs, options?: CreateApiHubNodesOptions) => {
const {baseUrl = "https://api.quiva.ai", 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 = `${baseUrl.replace(/\/+$/, '')}/hub/nodes${query.size > 0 ? `?${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(createNodeResponse, await res.json())
};