import { Device } from '../../domain/device/device.js'
import { CWMPTaskQueue } from './task_queue.js'
import { DeviceActionExecutor } from './device_action_executor.js'
import { ExecutingCommandsState, DeviceContext, DeviceStateResult } from './main_state_machine.js'
import logger from '@adonisjs/core/services/logger'

/**
 * State machine for "6 CONNECTION REQUEST" events.
 * Only executes pending Immediate (I) commands - does NOT include NI commands.
 */
export class ImmediateCommandStateMachine {
  private currentState: ExecutingCommandsState
  private context: DeviceContext

  constructor(device: Device, session: string, taskQueue: CWMPTaskQueue) {
    // includeNI = false: only execute Immediate commands
    this.currentState = new ExecutingCommandsState(false)
    this.context = {
      device,
      session,
      taskQueue,
      services: {
        deviceAction: new DeviceActionExecutor(taskQueue),
      },
    }
  }

  async start(): Promise<string> {
    logger.info(`Starting immediate-command state machine for device ${this.context.device.deviceId?.serialNumber}`)
    return this.execute()
  }

  async handleResponse(success: boolean, message: any): Promise<string> {
    this.context.message = { success, data: message }
    return this.execute()
  }

  getCurrentStateName(): string {
    return this.currentState.name
  }

  isCompleted(): boolean {
    return this.currentState.name === 'completed'
  }

  private async execute(): Promise<string> {
    try {
      const result: DeviceStateResult = await this.currentState.handle(this.context)

      if (result.isComplete) {
        return ''
      }

      if (result.response && result.response !== '') {
        return result.response
      }

      return ''
    } catch (error) {
      logger.error(`Immediate-command state machine error: ${error}`)
      return ''
    }
  }
}