import { storeJson } from './fileModels/storeJson'
import { i18n } from './i18n'
import { sdk } from './sdk'
import {
  APP_USER,
  BITCOIND_RPC_HOSTNAME,
  BITCOIND_RPC_PORT,
  dataDir,
  SPACED_CHAIN,
  spacedRpcPort,
  uiPort,
} from './utils'

export const main = sdk.setupMain(async ({ effects }) => {
  console.info(i18n('Starting Spaces!'))

  const store = await storeJson.read().const(effects)
  if (!store?.password || !store?.btcAuth) {
    // taskSetPassword + taskBtcAuth both seed these in init; if they aren't
    // populated yet, init hasn't finished — let StartOS restart us.
    throw new Error('Spaces store.json is not yet populated.')
  }

  const { password: APP_PASSWORD, btcAuth } = store

  const spacedEnv = {
    SPACED_CHAIN,
    SPACED_DATA_DIR: dataDir,
    SPACED_RPC_BIND: '127.0.0.1',
    SPACED_RPC_PORT: String(spacedRpcPort),
    SPACED_RPC_URL: `http://127.0.0.1:${spacedRpcPort}`,
    SPACED_BLOCK_INDEX: 'true',
    SPACED_BITCOIN_RPC_URL: `http://${BITCOIND_RPC_HOSTNAME}:${BITCOIND_RPC_PORT}`,
    SPACED_BITCOIN_RPC_USER: btcAuth.username,
    SPACED_BITCOIN_RPC_PASSWORD: btcAuth.password,
    // legacy aliases for `bitcoin-cli` / shell helpers that read these names
    BTC_RPC_HOST: BITCOIND_RPC_HOSTNAME,
    BTC_RPC_PORT: String(BITCOIND_RPC_PORT),
    BTC_RPC_USER: btcAuth.username,
    BTC_RPC_PASSWORD: btcAuth.password,
    APP_USER,
    APP_PASSWORD,
  }

  const mounts = sdk.Mounts.of().mountVolume({
    volumeId: 'main',
    subpath: null,
    mountpoint: dataDir,
    readonly: false,
  })

  const spacedSub = await sdk.SubContainer.of(
    effects,
    { imageId: 'spaces' },
    mounts,
    'spaced-sub',
  )

  const termSub = await sdk.SubContainer.of(
    effects,
    { imageId: 'spaces' },
    mounts,
    'terminal-sub',
  )

  const bashrc = [
    'export PATH=/root/.cargo/bin:/data/bin:/usr/local/bin:/usr/bin:/bin',
    "export PS1='spaces:\\w$ '",
    `alias spaces='space-cli --chain ${SPACED_CHAIN} --rpc-cookie ${dataDir}/${SPACED_CHAIN}/.cookie '`,
    'cat <<EOF',
    '',
    '┌─ Spaces ─────────────────────────────────────────────────┐',
    '│ spaced is managed by StartOS — do not run it manually.   │',
    '│ Use the `spaces` alias to call space-cli, e.g.           │',
    '│     spaces getserverinfo                                 │',
    '│ Docs: https://docs.spacesprotocol.org/                   │',
    '└──────────────────────────────────────────────────────────┘',
    '',
    'EOF',
  ].join('\n')

  return sdk.Daemons.of(effects)
    .addOneshot('bashrc', {
      subcontainer: termSub,
      exec: {
        command: ['bash', '-c', `cat > /root/.bashrc <<'SPACES_BASHRC_EOF'
${bashrc}
SPACES_BASHRC_EOF`],
        user: 'root',
      },
      requires: [],
    })
    .addDaemon('spaced', {
      subcontainer: spacedSub,
      exec: {
        command: ['/root/.cargo/bin/spaced'],
        env: spacedEnv,
      },
      ready: {
        display: i18n('Spaced RPC'),
        fn: () =>
          sdk.healthCheck.checkPortListening(effects, spacedRpcPort, {
            successMessage: i18n('spaced RPC is ready'),
            errorMessage: i18n('spaced RPC is not ready'),
          }),
        gracePeriod: 120_000,
      },
      requires: [],
    })
    .addDaemon('web-terminal', {
      subcontainer: termSub,
      exec: {
        command: [
          'gotty',
          '--port',
          String(uiPort),
          '-c',
          `${APP_USER}:${APP_PASSWORD}`,
          '--permit-write',
          '--reconnect',
          '/bin/bash',
        ],
        env: spacedEnv,
      },
      ready: {
        display: i18n('Web Interface'),
        fn: () =>
          sdk.healthCheck.checkPortListening(effects, uiPort, {
            successMessage: i18n('The web terminal is ready'),
            errorMessage: i18n('The web terminal is not ready'),
          }),
      },
      requires: ['bashrc'],
    })
    .addHealthCheck('sync', {
      ready: {
        display: i18n('Spaced Sync'),
        fn: async () => {
          const probe = await spacedSub.exec(
            [
              'bash',
              '-c',
              `/root/.cargo/bin/space-cli --chain ${SPACED_CHAIN} --rpc-cookie ${dataDir}/${SPACED_CHAIN}/.cookie getserverinfo`,
            ],
            {},
          )

          if (probe.exitCode !== 0) {
            return {
              result: 'starting',
              message: i18n(
                'spaced is querying Bitcoin and indexing — this can take a while on first run.',
              ),
            }
          }

          const stdout = (probe.stdout ?? '').toString()
          let progress = 0
          try {
            const parsed = JSON.parse(stdout) as {
              ready?: boolean
              progress?: number
              chain?: { blocks?: number; headers?: number }
            }
            if (parsed.ready === true) {
              return {
                result: 'success',
                message: i18n('spaced is fully synced.'),
              }
            }
            progress = Math.floor((parsed.progress ?? 0) * 100)
          } catch {
            // fall through to loading
          }

          return {
            result: 'loading',
            message: i18n('spaced is indexing. Progress: ${pct}%', {
              pct: String(progress),
            }),
          }
        },
        gracePeriod: 300_000,
      },
      requires: ['spaced'],
    })
})