import type { HttpContext } from '@adonisjs/core/http'
import DeviceService from '#services/device_service'
import { type PaginationData } from '#services/device_service'
import { type CommandType } from '#domain/commands/command'
import DeviceModel from '#models/device'

export default class DevicesController {
  private deviceService = new DeviceService()

  async criteriaValues({ response }: HttpContext) {
    const values = await DeviceModel.distinctCriteriaValues()
    return response.json(values)
  }

  async index({ request, response }: HttpContext) {
    const offset = Number(request.qs().offset) || 0
    const limit = Number(request.qs().limit) || 100

    const { data, nbDocuments, pager } = await this.deviceService.getDevices(offset, limit)

    response.header('x-total-count', nbDocuments.toString())
    response.header('link', this.generateLinkHeader(request, pager))
    return response.json(data)
  }

  async show({ params, response }: HttpContext) {
    const device = await this.deviceService.getDeviceByIdentifier(params.identifier)
    if (!device) {
      return response.status(404).json({ message: 'Device not found' })
    }
    return response.json(device)
  }

  async destroy({ params, response }: HttpContext) {
    const deleted = await this.deviceService.deleteByIdentifier(params.identifier)
    if (!deleted) {
      return response.status(404).json({ message: 'Device not found' })
    }
    return response.json({ message: 'Device deleted successfully' })
  }

  async executeCommand({ params, request, response }: HttpContext) {
    try {
      const body = request.body() as {
        action: CommandType
        parameters?: Record<string, any>
        mode?: string
        priority?: number
      }
      await this.deviceService.executeCommand(params.identifier, body)
      return response.status(201).json({ message: 'Command created' })
    } catch (error: any) {
      if (error.message?.includes('not found')) {
        return response.status(404).json({ message: error.message })
      }
      if (error.message?.includes('Duplicate')) {
        return response.status(409).json({ message: error.message })
      }
      return response.status(400).json({ message: error.message })
    }
  }

  async refresh({ params, response }: HttpContext) {
    try {
      await this.deviceService.refreshDevice(params.identifier)
      return response.status(200).json({ message: 'Refresh command sent' })
    } catch (error: any) {
      if (error.message?.includes('not found')) {
        return response.status(404).json({ message: error.message })
      }
      return response.status(500).json({ message: error.message })
    }
  }

  private generateLinkHeader(request: any, pager: PaginationData): string {
    const baseUrl = `${request.protocol()}://${request.host()}${request.url().split('?')[0]}`
    const parts: string[] = []

    if (pager.first) {
      parts.push(
        `<${baseUrl}?offset=${pager.first.offset}&limit=${pager.first.limit}>; rel="first"`
      )
    }
    if (pager.previous) {
      parts.push(
        `<${baseUrl}?offset=${pager.previous.offset}&limit=${pager.previous.limit}>; rel="prev"`
      )
    }
    if (pager.next) {
      parts.push(`<${baseUrl}?offset=${pager.next.offset}&limit=${pager.next.limit}>; rel="next"`)
    }
    if (pager.last) {
      parts.push(`<${baseUrl}?offset=${pager.last.offset}&limit=${pager.last.limit}>; rel="last"`)
    }

    return parts.join(',')
  }
}