import chalk from 'chalk'
import type { MetabaseClient } from '../client.js'
import { Resolver } from '../resolver.js'
import { loadResources } from '../loader.js'
import { loadState, saveState } from '../state.js'
import { buildPlan, applyActions } from '../reconciler.js'
import { printPlan } from './plan.js'

export async function apply(client: MetabaseClient, dryRun: boolean, resourceDir: string = '.') {
  console.log('Loading resources...')
  const resources = await loadResources(resourceDir)

  if (resources.length === 0) {
    console.log(chalk.yellow('No resources found. Expected collections/, questions/, dashboards/ subdirectories.'))
    return
  }

  console.log(`Found ${resources.length} resource(s)`)

  console.log('Initializing resolver...')
  const resolver = new Resolver()
  await resolver.init(client)

  const state = await loadState()
  const actions = buildPlan(resources, state)

  printPlan(actions)

  if (dryRun) {
    console.log(chalk.cyan('Dry run — no changes applied.'))
    return
  }

  if (actions.length === 0) return

  console.log(chalk.bold('Applying changes...'))

  const newState = await applyActions(client, resolver, actions, state)
  await saveState(newState)

  console.log(chalk.green(`\nDone! Applied ${actions.length} change(s).`))
}