import assert from 'node:assert/strict'
import { readFile } from 'node:fs/promises'
import path from 'node:path'
import test from 'node:test'
import { fileURLToPath } from 'node:url'
import { buildPlan, loadScopes } from '../deploy/sql/scripts/db-migrations.mjs'

const repositoryRoot = path.resolve(fileURLToPath(new URL('..', import.meta.url)))
const migrations = {
  iam: 'deploy/sql/migrations/cn/baiyue_iam/V1__align_schema_baseline.sql',
  iamForwardFix: 'deploy/sql/migrations/cn/baiyue_iam/V3__align_domestic_pda_mojia_sailing_permissions.sql',
  firstleg: 'deploy/sql/migrations/cn/baiyue_firstleg/V1__align_schema_baseline.sql',
  firstlegMeasurement: 'deploy/sql/migrations/cn/baiyue_firstleg/V2__align_measurement_and_fee_schema.sql',
  firstlegCustoms: 'deploy/sql/migrations/cn/baiyue_firstleg/V3__add_customs_receipt_declaration_schema.sql',
  firstlegSailing: 'deploy/sql/migrations/cn/baiyue_firstleg/V4__add_sailing_calendar_schema.sql',
  file: 'deploy/sql/migrations/cn/baiyue_file/V1__align_schema_baseline.sql',
  fileForwardFix: 'deploy/sql/migrations/cn/baiyue_file/V2__widen_business_type.sql',
  lastleg: 'deploy/sql/migrations/overseas/baiyue_lastleg/V2__align_schema_baseline.sql',
  lastlegForwardFix: 'deploy/sql/migrations/overseas/baiyue_lastleg/V3__relax_valid_nullable_fields.sql',
  lastlegRelabel: 'deploy/sql/migrations/overseas/baiyue_lastleg/V5__allow_multiple_relabel_applications.sql',
}
const destructiveMigrations = {
  overseasWarehouseLocation: 'deploy/sql/migrations/overseas/baiyue_lastlag_warehouse/V2__retire_location_zone_and_rebuild_query_index.sql',
}

async function sources() {
  return Object.fromEntries(await Promise.all(Object.entries(migrations).map(async ([name, relative]) => (
    [name, await readFile(path.join(repositoryRoot, relative), 'utf8')]
  ))))
}

test('schema alignment migrations contain no destructive statements', async () => {
  for (const [name, source] of Object.entries(await sources())) {
    assert.doesNotMatch(source, /^\s*(?:DROP|DELETE|UPDATE|TRUNCATE)\b/im, `${name} 迁移不得删除、清理或回填数据`)
    assert.doesNotMatch(source, /\bSIGNAL\s+SQLSTATE\b/i, `${name} 迁移不得使用 MySQL 不支持的动态 SIGNAL`)
  }
})

test('warehouse location migration marks its production-only destructive step', async () => {
  const source = await readFile(path.join(repositoryRoot, destructiveMigrations.overseasWarehouseLocation), 'utf8')
  assert.match(source, /DROP COLUMN zone_code/i)
  assert.match(source, /生产执行前必须单独授权 DROP COLUMN/i)
  assert.match(source, /有意的破坏性结构变更/i)
  assert.doesNotMatch(source, /^\s*(?:DROP|DELETE|UPDATE|TRUNCATE)\b/im)
})

test('schema alignment migrations cover the verified drift', async () => {
  const source = await sources()
  for (const field of ['tenant_code', 'customer_nickname', 'original_file_name']) assert.match(source.iam, new RegExp(`\\b${field}\\b`))
  for (const field of [
    'domestic_warehouse_id', 'idx_membership_domestic_warehouse',
    'platform:mojia-sku-sync:list', 'platform:firstleg:preload:list',
    'platform:firstleg:pda:assign', 'platform:firstleg:sailing-calendar:list',
    'platform:firstleg:sailing-volume:exception-reassign',
  ]) assert.match(source.iamForwardFix, new RegExp(field.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')))
  assert.match(source.firstleg, /\bpallet_no\b/)
  for (const field of [
    'inbound_code', 'measurement_kind', 'weight_kg', 'sync_status',
    'sync_failure_code', 'sync_failure_reason', 'lingxing_sku_id', 'revision',
    'match_failure_code', 'match_failure_reason', 'carrier_rate_id',
    'carrier_rate_version', 'rate_effective_from',
  ]) assert.match(source.firstlegMeasurement, new RegExp(`\\b${field}\\b`))
  for (const table of [
    'fl_customs_broker_submission', 'fl_customs_completion_action_history',
    'fl_customs_final_document', 'fl_customs_declaration_batch', 'fl_customs_clearance_result',
  ]) assert.match(source.firstlegCustoms, new RegExp(`\\b${table}\\b`))
  for (const field of [
    'broker_submitted_by', 'broker_submitted_by_name', 'broker_submitted_at',
    'customer_confirm_status', 'customer_confirmed_by', 'customer_confirmed_by_name',
    'customer_confirmed_at', 'customer_reject_reason',
  ]) assert.match(source.firstlegCustoms, new RegExp(`\\b${field}\\b`))
  for (const table of [
    'fl_sailing_channel', 'fl_sailing_template', 'fl_sailing', 'fl_sailing_history',
    'fl_sailing_receipt_batch_fact', 'fl_sailing_inbound_volume_forecast',
    'fl_sailing_assignment', 'fl_sailing_booking_link',
  ]) assert.match(source.firstlegSailing, new RegExp(`\\b${table}\\b`))
  for (const table of ['file_pda_release_channel', 'file_pda_release']) assert.match(source.file, new RegExp(`\\b${table}\\b`))
  assert.match(source.fileForwardFix, /business_type\s+varchar\(64\)/i)
  for (const field of [
    'actual_discard_packages', 'pda_status', 'pda_operator_id', 'pda_completed_at',
    'quantity', 'pallet_code', 'discrepancy_reason', 'manually_completed_at',
  ]) assert.match(source.lastleg, new RegExp(`\\b${field}\\b`))
  for (const field of ['inventory_position_id', 'new_sku_code', 'source_warehouse_id']) {
    assert.match(source.lastlegForwardFix, new RegExp(`\\b${field}\\b`))
  }
  assert.match(source.lastlegRelabel, /uk_ll_relabel_application_order/i)
  assert.match(source.lastlegRelabel, /idx_ll_relabel_application_order/i)
})

test('墨家迁移保留未知重量，不因已有收件记录阻断', async () => {
  const { firstlegMeasurement: source } = await sources()
  assert.match(source, /ADD COLUMN weight_kg DECIMAL\(18,3\) NULL/i)
  assert.match(source, /MODIFY COLUMN weight_kg DECIMAL\(18,3\) NULL/i)
  assert.doesNotMatch(source, /weight_kg DECIMAL\(18,3\) NOT NULL/i)
  assert.doesNotMatch(source, /FROM\s+fl_mojia_measurement_receipt\b/i)
  assert.match(source, /migration_blocked_firstleg_mojia_receipt_table_missing/)
  const module = await readFile(path.join(repositoryRoot, 'firstleg/src/main/resources/db/phase2-inbound-schema.sql'), 'utf8')
  const receipt = module.match(/CREATE TABLE IF NOT EXISTS fl_mojia_measurement_receipt\s*\(([\s\S]*?)\n\) ENGINE=/i)?.[1]
  assert.ok(receipt, '必须保留墨家收件表定义')
  assert.match(receipt, /weight_kg DECIMAL\(18,3\) NULL/i)
})

test('constraint tightening is guarded before any alter table', async () => {
  for (const [name, source] of Object.entries(await sources())) {
    const firstAlter = source.search(/\bALTER TABLE\b/i)
    const firstGuard = source.search(/SET @guard\s*=\s*IF/i)
    if (name === 'file' || name === 'iam' || name === 'firstleg' || name === 'lastleg' || name === 'firstlegMeasurement' || name === 'firstlegCustoms') {
      assert.ok(firstGuard >= 0 && firstGuard < firstAlter, `${name} 必须先验证存量数据再执行 DDL`)
    }
  }
})

test('数据库迁移计划包含授权版本和事件可靠投递的正式目标版本', async () => {
  const sqlRoot = path.join(repositoryRoot, 'deploy', 'sql')
  const scopes = await loadScopes(path.join(sqlRoot, 'migration-scopes.json'))
  const plan = await buildPlan({
    sqlRoot,
    scopes,
    regions: ['CN', 'OVERSEAS'],
    services: ['iam', 'firstleg', 'finance', 'lastleg-service', 'warehouse-overseas-service'],
    commit: null,
  })
  const targets = Object.fromEntries(plan.regions.flatMap((region) => region.schemas.map((schema) => [schema.schema, schema])))
  assert.equal(targets.baiyue_iam.target, '3')
  assert.equal(targets.baiyue_firstleg.target, '6')
  assert.equal(targets.baiyue_finance.target, '2')
  assert.equal(targets.baiyue_lastleg.target, '7')
  assert.equal(targets.baiyue_lastlag_warehouse.target, '2')
  assert.deepEqual(targets.baiyue_firstleg.migrations.slice(-3).map((migration) => migration.path), [
    'migrations/cn/baiyue_firstleg/V4__add_sailing_calendar_schema.sql',
    'migrations/cn/baiyue_firstleg/V5__event_delivery_retry_audit.sql',
    'migrations/cn/baiyue_firstleg/V6__event_delivery_attempt.sql',
  ])
})