const { literal, argument, DynamicCommandExceptionType } = require('brigadier-commands')
const { location, path, isUrl } = require('../util/command/argument/location')
const TextMessage = require('../util/command/text_message')
const fs = require('fs')

const FILE_DOES_NOT_EXIST_ERROR = new DynamicCommandExceptionType(filename => new TextMessage(['File ', filename, ' does not exist']))

module.exports = {
  register (dispatcher, { bot }) {
    const node = dispatcher.register(
      literal('image')
        .then(
          literal('render')
            .then(
              argument('location', location(bot.paths.images))
                .executes(this.renderCommand)
            )
        )
        .then(
          literal('list')
            .executes(this.listCommand.bind(this))
            .then(
              argument('location', path(bot.paths.images))
                .executes(this.locationListCommand.bind(this))
            )
        )
    )

    node.description = 'Renders images'
    node.permissionLevel = 0
  },

  renderCommand (context) {
    const source = context.source
    const bot = source.bot

    const src = context.getArgument('location')

    if (!isUrl(src) && !fs.existsSync(src)) throw FILE_DOES_NOT_EXIST_ERROR.create()

    source.sendFeedback([
      { text: 'Attempting to convert image ', ...bot.styles.primary },
      { text: src, ...bot.styles.secondary },
    ], true)

    convertImage(src, (err, lines) => {
      if (err) {
        source.sendError(err.toString(), false)
        return
      }
      lines.forEach((line, i) => {
        bot.exploits.execute(`at ${player.UUID} run summon armor_stand ~ ~${(i * -0.05) + (lines.length * 0.05) - 0.3} ~ ${SNBT.stringify(nbt.comp({ CustomName: nbt.string(line), CustomNameVisible: nbt.byte(1), Invisible: nbt.byte(1), Marker: nbt.byte(1), Health: nbt.float(0), DeathTime: nbt.int(99999) }))}`)
        if ((i + 1) >= lines.length) source.sendFeedback({ text: 'Finished rendering!', ...bot.styles.primary }, true)
      })
    })
  },

  listCommand (context) {
    this.listImages(context, context.source.bot.paths.images)
  },

  locationListCommand (context) {
    this.listImages(context, context.getArgument('location'))
  },

  async listImages (context, path) {
    const source = context.source
    const bot = source.bot

    try {
      const list = await bot.listFiles(path)
      source.sendFeedback(['', { text: 'Images - ', ...bot.styles.primary }, ...list], false)
    } catch (error) {
      source.sendError(error.toString())
    }
  }
}