import { FastifyPluginAsync } from 'fastify'
import { readFile } from 'fs/promises'
import { join } from 'path'

const agentRelease: FastifyPluginAsync = async (fastify) => {
  fastify.get('/api/agents/latest-release', { onRequest: [fastify.authenticate] }, async (_req, reply) => {
    const updatesDir = process.env.AGENT_UPDATES_DIR ?? join(process.cwd(), '..', 'agent-updates')
    try {
      const yaml = await readFile(join(updatesDir, 'latest.yml'), 'utf8')
      // Parse version: line like "version: 1.0.6"
      const versionMatch = yaml.match(/^version:\s*(.+)$/m)
      const pathMatch    = yaml.match(/^path:\s*(.+)$/m)
      if (!versionMatch) return reply.code(404).send({ error: 'latest.yml not found or invalid' })
      const version = versionMatch[1].trim()
      const fileName = pathMatch?.[1].trim() ?? `HotelSync Agent Setup ${version}.exe`
      const host = process.env.API_PUBLIC_URL ?? 'https://api.hotelsync.ru'
      return { version, fileName, downloadUrl: `${host}/agent-updates/${encodeURIComponent(fileName)}` }
    } catch {
      return reply.code(404).send({ error: 'No release available' })
    }
  })
}

export default agentRelease