import { requireAuth } from '~/server/utils/auth'
import { prisma } from '~/server/utils/prisma'

export default defineEventHandler(async (event) => {
  const user = requireAuth(event)
  const body = await readBody(event)
  const { taskId, canvasId, newState } = body

  if (!taskId || !canvasId || !newState) {
    throw createError({ statusCode: 400, message: 'taskId, canvasId and newState are required' })
  }

  // 1. Найти холст
  const canvas = await prisma.canvas.findUnique({
    where: { id: canvasId }
  })

  if (!canvas) {
    throw createError({ statusCode: 404, message: 'Canvas not found' })
  }

  // 2. Найти и обновить узел в JSON
  const nodes = (canvas.nodes as any[]) || []
  const nodeIdx = nodes.findIndex(n => n.id === taskId)

  if (nodeIdx === -1) {
    throw createError({ statusCode: 404, message: 'Task node not found in canvas' })
  }

  // Обновляем состояние
  nodes[nodeIdx].state = newState
  
  // Также обновляем дату изменения, если нужно
  nodes[nodeIdx].updatedAt = new Date().toISOString()

  // 3. Сохранить изменения в БД
  await prisma.canvas.update({
    where: { id: canvasId },
    data: { nodes }
  })

  return {
    success: true,
    message: `Task ${taskId} moved to ${newState}`
  }
})