import test from 'brittle'
import { readFile } from 'node:fs/promises'
import { dirname, join } from 'node:path'
import { fileURLToPath } from 'node:url'

import { attachBareOsTuiSdk } from '../../bare-os-booter/lib/services/bare-os-tui-sdk.js'

const __dirname = dirname(fileURLToPath(import.meta.url))

async function load() {
  const parts = await Promise.all([
    readFile(join(__dirname, '../lib/irc/irc-parse.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-isupport.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-sasl.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-state.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-config.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-client.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-dial.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-commands.js'), 'utf8'),
    readFile(join(__dirname, '../lib/irc/irc-tui.js'), 'utf8')
  ])
  const hook = {}
  new Function(
    'exports',
    parts.join('\n') +
      '\nexports.bareIrcCreateClient = bareIrcCreateClient;\nexports.bareIrcCreateTuiApp = bareIrcCreateTuiApp;\n'
  )(hook)
  return hook
}

function makeStream(isTTY) {
  return {
    isTTY: !!isTTY,
    columns: 80,
    rows: 24,
    write() {},
    setRawMode() {},
    resume() {},
    pause() {},
    on() {},
    removeListener() {}
  }
}

function makeCtx() {
  const ctx = {
    env: {},
    console: { error() {}, log() {} },
    replStdin: makeStream(true),
    replStdout: makeStream(true),
    suspendReplForSubprocess() {},
    resumeReplAfterSubprocess() {}
  }
  attachBareOsTuiSdk(ctx)
  return ctx
}

test('irc TUI paints a fixed-height frame', async (t) => {
  const h = await load()
  const ctx = makeCtx()
  const client = h.bareIrcCreateClient({ nick: 'alice', network: 'libera' })
  client.state.connection = 'registered'
  client.state.registered = true
  client.state.nick = 'alice'
  client.handleMessage({
    tags: {},
    source: 'bob!b@h',
    nick: 'bob',
    user: 'b',
    host: 'h',
    command: 'PRIVMSG',
    params: ['#bareos', 'hello from test']
  })
  const chan = Object.values(client.state.buffers).find(
    (b) => b.kind === 'channel'
  )
  t.ok(chan)
  client.state.currentId = chan.id
  const app = h.bareIrcCreateTuiApp(ctx, client)
  app.width = 80
  app.height = 24
  app._sync()
  const view = ctx.tui.style.stripAnsi(app.view())
  t.is(view.split('\n').length, 24)
  t.ok(
    view.includes('libera') ||
      view.includes('#bareos') ||
      view.includes('alice')
  )
  t.ok(view.includes('hello from test'))
})

test('irc TUI keeps nicks in a right-hand column', async (t) => {
  const h = await load()
  const ctx = makeCtx()
  const client = h.bareIrcCreateClient({ nick: 'alice', network: 'libera' })
  client.state.registered = true
  client.handleMessage({
    command: 'JOIN',
    nick: 'alice',
    params: ['#ubuntu']
  })
  client.handleMessage({
    command: '353',
    params: ['alice', '=', '#ubuntu', '@op +voice nickonly']
  })
  client.handleMessage({
    command: 'PRIVMSG',
    nick: 'op',
    source: 'op!a@b',
    params: ['#ubuntu', 'hello room']
  })
  const app = h.bareIrcCreateTuiApp(ctx, client)
  app.width = 120
  app.height = 24
  app.roomsOpen = false
  app._sync()
  const view = ctx.tui.style.stripAnsi(app.view())
  const lines = view.split('\n')
  t.ok(view.includes('hello room'))
  t.ok(view.includes('@op') || view.includes('op'))
  const chatLine = lines.find((l) => l.includes('hello room'))
  t.ok(chatLine)
  const bar = chatLine.lastIndexOf('\u2502')
  t.ok(bar > chatLine.indexOf('hello room'))
  const nickLine = lines.find((l) => l.includes('\u2502') && /@op/.test(l))
  t.ok(nickLine)
  t.ok(nickLine.lastIndexOf('\u2502') < nickLine.indexOf('@op'))
})

test('irc TUI rooms browser lists featured channels', async (t) => {
  const h = await load()
  const ctx = makeCtx()
  const client = h.bareIrcCreateClient({ nick: 'alice' })
  const app = h.bareIrcCreateTuiApp(ctx, client)
  app.width = 80
  app.height = 24
  app._openRooms('')
  app._sync()
  const view = ctx.tui.style.stripAnsi(app.view())
  t.ok(app.roomsOpen)
  t.ok(view.includes('#libera'))
})

test('irc TUI help overlay', async (t) => {
  const h = await load()
  const ctx = makeCtx()
  const client = h.bareIrcCreateClient({ nick: 'alice' })
  const app = h.bareIrcCreateTuiApp(ctx, client)
  app.update(ctx.tui.decode('?')[0])
  t.ok(app.help)
  const ov = app.overlay({ width: 80, height: 24 })
  t.ok(ov && ctx.tui.style.stripAnsi(ov.text).includes('Libera'))
})

test('kernel irc bin includes TEA factory after build', async (t) => {
  const bin = await readFile(join(__dirname, '../../../kernel/bin/irc'), 'utf8')
  t.ok(bin.includes('bareIrcCreateTuiApp'))
  t.ok(bin.includes('ctx.tui.run'))
  t.ok(bin.includes('irc.libera.chat'))
})