import { FREIGHT_PERMS } from '../../../seed/freight-permissions.registry';
import { Company } from '../../companies/entities/company.entity';
import { CompanyProfile } from '../../companies/entities/company-profile.entity';
import { Contract } from '../../contracts/entities/contract.entity';
import { ServiceType } from '../../rule-engine/entities/service-type.entity';
import { applyDirectionScope } from '../../user-trade-access/trade-scope.util';
import { ExportDataset } from '../export.types';

export const contractsDataset: ExportDataset = {
  key: 'contracts',
  title: 'Contracts',
  description: 'Contracts with customer, terms, routes, approval and clearance detail',
  group: 'Commercial',
  permission: FREIGHT_PERMS.contracts.view,
  base: { entity: Contract, alias: 'ct' },

  joins: [
    { alias: 'c', entity: Company, on: 'c.id = ct.company_id' },
    { alias: 'cp', entity: CompanyProfile, on: 'cp.id = ct.company_profile_id' },
    { alias: 'st', entity: ServiceType, on: 'st.id = ct.service_type_id' },
    { alias: 'ren', entity: Contract, on: 'ren.id = ct.renewal_of_id' },
  ],
  // `search` matches the customer name.
  alwaysJoin: ['c'],

  groups: [
    { id: 'contract', label: 'Contract' },
    { id: 'customer', label: 'Customer' },
    { id: 'terms', label: 'Terms' },
    { id: 'routes', label: 'Routes & cargo' },
    { id: 'approval', label: 'Approval' },
    { id: 'clearance', label: 'Clearance' },
  ],

  fields: [
    { key: 'reference', label: 'Reference', type: 'string', group: 'contract', default: true, select: 'ct.reference', sortExpr: 'ct.reference' },
    { key: 'status', label: 'Status', type: 'string', group: 'contract', default: true, select: 'ct.status', sortExpr: 'ct.status' },
    { key: 'contractKind', label: 'Kind', type: 'string', group: 'contract', default: true, select: 'ct.contract_kind' },
    { key: 'contractType', label: 'Type', type: 'string', group: 'contract', select: 'ct.contract_type' },
    { key: 'createdAt', label: 'Created', type: 'date', group: 'contract', default: true, select: `to_char(ct.created_at, 'YYYY-MM-DD')`, sortExpr: 'ct.created_at' },
    { key: 'submittedAt', label: 'Submitted', type: 'datetime', group: 'contract', select: `to_char(ct.submitted_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'versionNumber', label: 'Version', type: 'number', group: 'contract', select: 'ct.version_number' },
    { key: 'renewalOf', label: 'Renewal of', type: 'string', group: 'contract', requires: ['ren'], select: 'ren.reference' },
    { key: 'statusBeforeSuspension', label: 'Status before suspension', type: 'string', group: 'contract', select: 'ct.status_before_suspension' },

    { key: 'customer', label: 'Customer', type: 'string', group: 'customer', default: true, requires: ['c'], select: 'c.name', sortExpr: 'c.name' },
    { key: 'customerTin', label: 'Customer TIN', type: 'string', group: 'customer', requires: ['c'], select: 'c.tin' },
    { key: 'customerPhone', label: 'Customer phone', type: 'string', group: 'customer', requires: ['c'], select: 'c.phone' },
    { key: 'customerEmail', label: 'Customer email', type: 'string', group: 'customer', requires: ['c'], select: 'c.email' },
    { key: 'customerType', label: 'Customer type', type: 'string', group: 'customer', requires: ['c'], select: 'c.type' },
    { key: 'customerProfileRef', label: 'Profile reference', type: 'string', group: 'customer', requires: ['cp'], select: 'cp.reference' },
    { key: 'isGovernment', label: 'Government', type: 'boolean', group: 'customer', select: 'ct.is_government' },
    { key: 'governmentInstitution', label: 'Government institution', type: 'string', group: 'customer', select: 'ct.government_institution' },

    { key: 'tradeDirection', label: 'Direction', type: 'string', group: 'terms', default: true, select: 'ct.trade_direction', sortExpr: 'ct.trade_direction' },
    { key: 'freightType', label: 'Freight type', type: 'string', group: 'terms', default: true, select: 'ct.freight_type' },
    { key: 'serviceType', label: 'Service type', type: 'string', group: 'terms', requires: ['st'], select: 'st.service_name' },
    { key: 'paymentCurrency', label: 'Currency', type: 'string', group: 'terms', select: 'ct.payment_currency' },
    { key: 'validFrom', label: 'Valid from', type: 'date', group: 'terms', default: true, select: `to_char(ct.contract_valid_from, 'YYYY-MM-DD')`, sortExpr: 'ct.contract_valid_from' },
    { key: 'validUntil', label: 'Valid until', type: 'date', group: 'terms', default: true, select: `to_char(ct.contract_valid_until, 'YYYY-MM-DD')` },
    { key: 'validityDays', label: 'Validity (days)', type: 'number', group: 'terms', select: 'ct.contract_validity_days' },
    { key: 'expiresAt', label: 'Expires', type: 'date', group: 'terms', select: `to_char(ct.expires_at, 'YYYY-MM-DD')` },
    { key: 'estimatedShipmentDate', label: 'Est. shipment date', type: 'date', group: 'terms', select: `to_char(ct.estimated_shipment_date, 'YYYY-MM-DD')` },
    { key: 'equipmentReturn', label: 'Equipment return', type: 'string', group: 'terms', select: 'ct.equipment_return' },
    { key: 'pricingDisplayMode', label: 'Pricing display mode', type: 'string', group: 'terms', select: 'ct.pricing_display_mode' },

    {
      key: 'routes', label: 'Routes', type: 'string', group: 'routes',
      select: `(SELECT string_agg(o.label || ' -> ' || d.label, ' | ' ORDER BY cr.sort_order)
                FROM freight.contract_routes cr
                JOIN freight.yards o ON o.id = cr.origin_yard_id
                JOIN freight.yards d ON d.id = cr.destination_yard_id
                WHERE cr.contract_id = ct.id AND cr.deleted_at IS NULL)`,
    },
    {
      key: 'routeCount', label: 'Route count', type: 'number', group: 'routes',
      select: `(SELECT COUNT(*)::int FROM freight.contract_routes cr
                WHERE cr.contract_id = ct.id AND cr.deleted_at IS NULL)`,
    },
    {
      key: 'bookingCount', label: 'Bookings', type: 'number', group: 'routes',
      select: `(SELECT COUNT(*)::int FROM freight.bookings b
                WHERE b.contract_id = ct.id AND b.deleted_at IS NULL)`,
    },
    { key: 'isHazardous', label: 'Hazardous', type: 'boolean', group: 'routes', select: 'ct.is_hazardous' },
    { key: 'hazardClass', label: 'Hazard class', type: 'string', group: 'routes', select: 'ct.hazard_class' },
    { key: 'unNumber', label: 'UN number', type: 'string', group: 'routes', select: 'ct.un_number' },
    { key: 'isReefer', label: 'Reefer', type: 'boolean', group: 'routes', select: 'ct.is_reefer' },

    { key: 'approvedAt', label: 'Approved at', type: 'datetime', group: 'approval', select: `to_char(ct.approved_by_staff_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'signedByDirectorAt', label: 'Director signed', type: 'datetime', group: 'approval', select: `to_char(ct.signed_by_director_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'signedByCeoAt', label: 'CEO signed', type: 'datetime', group: 'approval', select: `to_char(ct.signed_by_ceo_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'customerSignedAt', label: 'Customer signed', type: 'datetime', group: 'approval', select: `to_char(ct.customer_signed_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'fullyExecutedAt', label: 'Fully executed', type: 'datetime', group: 'approval', default: true, select: `to_char(ct.fully_executed_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'lockedAt', label: 'Locked at', type: 'datetime', group: 'approval', select: `to_char(ct.locked_at, 'YYYY-MM-DD HH24:MI')` },
    { key: 'contractGeneratedAt', label: 'Document generated', type: 'datetime', group: 'approval', select: `to_char(ct.contract_generated_at, 'YYYY-MM-DD HH24:MI')` },

    { key: 'clearanceStatus', label: 'Clearance status', type: 'string', group: 'clearance', select: 'ct.clearance_status' },
    { key: 'clearanceCycleNumber', label: 'Clearance cycle', type: 'number', group: 'clearance', select: 'ct.clearance_cycle_number' },
    { key: 'customsClearingEnabled', label: 'Customs clearing', type: 'boolean', group: 'clearance', select: 'ct.customs_clearing_enabled' },
    { key: 'customsClearingAgent', label: 'Clearing agent', type: 'string', group: 'clearance', select: 'ct.customs_clearing_agent' },
    { key: 'firstMileAddress', label: 'Pickup address', type: 'string', group: 'clearance', select: 'ct.first_mile_pickup_address' },
    { key: 'lastMileAddress', label: 'Delivery address', type: 'string', group: 'clearance', select: 'ct.last_mile_delivery_address' },
  ],

  filters: [
    { key: 'created', label: 'Created', type: 'daterange' },
    { key: 'statuses', label: 'Status', type: 'multiselect' },
    { key: 'contractKind', label: 'Kind', type: 'text' },
    { key: 'tradeDirection', label: 'Direction', type: 'select', options: ['IMPORT', 'EXPORT', 'DOMESTIC'].map((v) => ({ value: v, label: v })) },
    { key: 'freightType', label: 'Freight type', type: 'select', options: ['CONTAINER', 'BULK'].map((v) => ({ value: v, label: v })) },
    { key: 'paymentCurrency', label: 'Currency', type: 'select', options: [
      { value: 'ETB', label: 'ETB' },
      { value: 'USD', label: 'USD' },
    ] },
    { key: 'serviceTypeId', label: 'Service type', type: 'text' },
    // Routes are one-to-many on contract_routes, so these filter via EXISTS
    // rather than a column comparison.
    { key: 'originYardId', label: 'Origin', type: 'text' },
    { key: 'destinationYardId', label: 'Destination', type: 'text' },
    { key: 'companyId', label: 'Customer', type: 'text' },
    { key: 'search', label: 'Search reference or customer', type: 'text' },
  ],

  defaultSort: { key: 'createdAt', dir: 'DESC' },

  scope(ctx, qb) {
    const { params, directions } = ctx;
    qb.andWhere('ct.deleted_at IS NULL');
    if (params.createdFrom) qb.andWhere('ct.created_at >= :createdFrom', { createdFrom: params.createdFrom });
    if (params.createdTo) qb.andWhere('ct.created_at < :createdTo', { createdTo: params.createdTo });
    const statuses = params.statuses as string[] | null;
    if (statuses?.length) qb.andWhere('ct.status IN (:...statuses)', { statuses });
    if (params.contractKind) qb.andWhere('ct.contract_kind = :contractKind', { contractKind: params.contractKind });
    if (params.tradeDirection) qb.andWhere('ct.trade_direction = :tradeDirection', { tradeDirection: params.tradeDirection });
    if (params.freightType) qb.andWhere('ct.freight_type = :freightType', { freightType: params.freightType });
    if (params.paymentCurrency) qb.andWhere('ct.payment_currency = :paymentCurrency', { paymentCurrency: params.paymentCurrency });
    if (params.serviceTypeId) qb.andWhere('ct.service_type_id = :serviceTypeId', { serviceTypeId: params.serviceTypeId });
    if (params.originYardId) {
      qb.andWhere(
        `EXISTS (SELECT 1 FROM freight.contract_routes cr
                 WHERE cr.contract_id = ct.id AND cr.deleted_at IS NULL
                   AND cr.origin_yard_id = :originYardId)`,
        { originYardId: params.originYardId },
      );
    }
    if (params.destinationYardId) {
      qb.andWhere(
        `EXISTS (SELECT 1 FROM freight.contract_routes cr2
                 WHERE cr2.contract_id = ct.id AND cr2.deleted_at IS NULL
                   AND cr2.destination_yard_id = :destinationYardId)`,
        { destinationYardId: params.destinationYardId },
      );
    }
    if (params.companyId) qb.andWhere('ct.company_id = :companyId', { companyId: params.companyId });
    if (params.search) {
      qb.andWhere('(ct.reference ILIKE :search OR c.name ILIKE :search)', { search: `%${params.search as string}%` });
    }
    applyDirectionScope(qb, 'ct.trade_direction', directions);
  },
};