import assert from 'node:assert/strict'
import { readFile } from 'node:fs/promises'
import test from 'node:test'

const read = async (path) => (await readFile(new URL(`../${path}`, import.meta.url), 'utf8'))
  .replaceAll('\r\n', '\n')

test('all backend business services have blue-green runtime contracts', async () => {
  const script = await read('deploy/scripts/deploy-blue-green-service.sh')
  for (const service of [
    'gateway', 'auth', 'iam', 'firstleg', 'finance', 'order', 'warehouse', 'file', 'print',
    'integration-service', 'audit-service', 'gateway-overseas', 'lastleg-service',
    'warehouse-overseas-service', 'event-bridge-service'
  ]) assert.match(script, new RegExp(`${service.replaceAll('-', '\\-')}:`))

  assert.match(script, /target_slot="green"/)
  assert.match(script, /target_port=\$\(\(BASE_PORT \+ 10000\)\)/)
  assert.match(script, /compose run -d --no-deps --name "\$candidate"/)
  assert.match(script, /wait_for_container "\$candidate"/)
  assert.match(script, /BAIYUE_RUNTIME_SCHEDULING_ENABLED=false/)
  assert.match(script, /NACOS_REGISTER_ENABLED=false/)
  assert.match(script, /start_worker_candidate/)
  assert.match(script, /worker_java_options="-Xms512m -Xmx2g/)
  assert.match(script, /worker_java_options="-Xms256m -Xmx1g/)
  assert.match(script, /connect_routing_aliases "\$candidate" "\$ROUTING_ALIAS" "\$NACOS_SERVICE"/)
  assert.match(script, /file,file-service:file/)
  assert.match(script, /docker stop --time "\$STOP_TIMEOUT" "\$active_container"/)
  assert.match(script, /mv -f "\$STATE_FILE\.tmp" "\$STATE_FILE"/)
})

test('candidate failure keeps the active container and successful cutover stops it last', async () => {
  const script = await read('deploy/scripts/deploy-blue-green-service.sh')
  const start = script.lastIndexOf('compose run -d')
  const healthy = script.indexOf('if ! wait_for_container "$candidate"')
  const route = script.indexOf('connect_routing_aliases "$candidate"')
  const gateway = script.indexOf('if ! switch_gateway_proxy')
  const stop = script.indexOf('docker stop --time "$STOP_TIMEOUT" "$active_container"')
  const state = script.indexOf('mv -f "$STATE_FILE.tmp" "$STATE_FILE"')
  assert.ok(start >= 0 && start < healthy)
  assert.ok(healthy < route && route < gateway && gateway < stop && stop < state)
  assert.match(script.slice(healthy, route), /cleanup_candidate/)
})

test('gateway cutover is atomic and restores nginx config on validation failure', async () => {
  const script = await read('deploy/scripts/deploy-blue-green-service.sh')
  assert.match(script, /api-cn\.buggoglobal\.com\.conf/)
  assert.match(script, /api-global\.buggoglobal\.com\.conf/)
  assert.match(script, /尚未完成首次蓝绿迁移，拒绝切换 Gateway/)
  assert.match(script, /frontend-\$frontend_service\.active/)
  assert.match(script, /尚未使用稳定上游 \$required_alias，拒绝切换 Gateway/)
  assert.match(script, /reload_frontend_proxies/)
  assert.match(script, /cp -f "\$config" "\$backup"/)
  assert.match(script, /nginx -t \|\| ! nginx -s reload/)
  assert.match(script, /cp -f "\$backup" "\$config"/)
})

test('compose templates preserve rolling defaults and expose slot metadata', async () => {
  const domestic = await read('deploy/docker-compose.yml')
  const overseas = await read('deploy/docker-compose.overseas.yml')
  for (const compose of [domestic, overseas]) {
    assert.match(compose, /BAIYUE_DEPLOY_SLOT: \$\{DEPLOY_SLOT:-rolling\}/)
    assert.match(compose, /BAIYUE_RELEASE_ID: \$\{RELEASE_ID:-local\}/)
    assert.match(compose, /SERVER_SHUTDOWN: graceful/)
    assert.match(compose, /stop_grace_period: \$\{STOP_GRACE_PERIOD:-45s\}/)
    assert.match(compose, /\$\{DEPLOY_SLOT_SUFFIX:-\}/)
  }
})

test('every scheduled worker service can disable Nacos registration', async () => {
  for (const application of [
    'iam/src/main/resources/application.yml',
    'firstleg/src/main/resources/application.yml',
    'finance/src/main/resources/application.yml',
    'order/src/main/resources/application.yml',
    'file/src/main/resources/application.yml',
    'event-bridge-service/src/main/resources/application.yml',
    'audit-service/src/main/resources/application.yml',
    'lastleg-service/src/main/resources/application.yml'
  ]) {
    assert.match(await read(application), /register-enabled: \$\{NACOS_REGISTER_ENABLED:true\}/, application)
  }
})

test('production single-service pipeline dispatches the blue-green executor', async () => {
  const deploy = await read('deploy/scripts/deploy-built-service.sh')
  const batch = await read('deploy/scripts/deploy-services.sh')
  assert.match(deploy, /run_scp "deploy\/scripts\/deploy-blue-green-service\.sh"/)
  assert.match(deploy, /if \[ "\$DEPLOY_ENV" = "production" \]/)
  assert.match(deploy, /run_ssh sh "\$REMOTE_DIR\/\$REMOTE_BLUE_GREEN_NAME"/)
  assert.match(deploy, /TARGET_IS_LOCAL[\s\S]*?deploy-blue-green-service\.sh/)
  assert.match(batch, /if \[ "\$DEPLOY_ENV" = "test" \] \|\| \[ "\$DEPLOY_ENV" = "production" \][\s\S]*?deploy-blue-green-service\.sh/)
})

test('test business services use blue-green while test gateways retain their fixed entry ports', async () => {
  const deploy = await read('deploy/scripts/deploy-built-service.sh')
  const batch = await read('deploy/scripts/deploy-services.sh')
  assert.match(deploy, /\[ "\$DEPLOY_ENV" = "test" \][\s\S]*?\[ "\$SERVICE" != "gateway" \]/)
  assert.match(batch, /\[ "\$DEPLOY_ENV" = "test" \] \|\| \[ "\$DEPLOY_ENV" = "production" \]/)
  assert.match(batch, /\[ "\$service" = gateway \] \|\| \[ "\$service" = gateway-overseas \]/)
})