fix

apps/backend/src/application/controllers/rates.controller.ts

@@ -3,12 +3,14 @@ import {
   Post,
   Get,
   Body,
+  Query,
   HttpCode,
   HttpStatus,
   Logger,
   UsePipes,
   ValidationPipe,
   UseGuards,
+  Inject,
 } from '@nestjs/common';
 import {
   ApiTags,
@@ -17,6 +19,7 @@ import {
   ApiBadRequestResponse,
   ApiInternalServerErrorResponse,
   ApiBearerAuth,
+  ApiQuery,
 } from '@nestjs/swagger';
 import { RateSearchRequestDto, RateSearchResponseDto } from '../dto';
 import { RateQuoteMapper } from '../mappers';
@@ -25,8 +28,15 @@ import { CsvRateSearchService } from '@domain/services/csv-rate-search.service';
 import { JwtAuthGuard } from '../guards/jwt-auth.guard';
 import { CurrentUser, UserPayload } from '../decorators/current-user.decorator';
 import { CsvRateSearchDto, CsvRateSearchResponseDto } from '../dto/csv-rate-search.dto';
-import { AvailableCompaniesDto, FilterOptionsDto } from '../dto/csv-rate-upload.dto';
+import {
+  AvailableCompaniesDto,
+  FilterOptionsDto,
+  AvailableOriginsDto,
+  AvailableDestinationsDto,
+  RoutePortInfoDto,
+} from '../dto/csv-rate-upload.dto';
 import { CsvRateMapper } from '../mappers/csv-rate.mapper';
+import { PortRepository, PORT_REPOSITORY } from '@domain/ports/out/port.repository';
 
 @ApiTags('Rates')
 @Controller('rates')
@@ -37,7 +47,8 @@ export class RatesController {
   constructor(
     private readonly rateSearchService: RateSearchService,
     private readonly csvRateSearchService: CsvRateSearchService,
-    private readonly csvRateMapper: CsvRateMapper
+    private readonly csvRateMapper: CsvRateMapper,
+    @Inject(PORT_REPOSITORY) private readonly portRepository: PortRepository
   ) {}
 
   @Post('search')
@@ -271,6 +282,168 @@ export class RatesController {
     }
   }
 
+  /**
+   * Get available origin ports from CSV rates
+   * Returns only ports that have routes defined in CSV files
+   */
+  @Get('available-routes/origins')
+  @UseGuards(JwtAuthGuard)
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({
+    summary: 'Get available origin ports from CSV rates',
+    description:
+      'Returns list of origin ports that have shipping routes defined in CSV rate files. Use this to populate origin port selection dropdown.',
+  })
+  @ApiResponse({
+    status: HttpStatus.OK,
+    description: 'List of available origin ports with details',
+    type: AvailableOriginsDto,
+  })
+  @ApiResponse({
+    status: 401,
+    description: 'Unauthorized - missing or invalid token',
+  })
+  async getAvailableOrigins(): Promise<AvailableOriginsDto> {
+    this.logger.log('Fetching available origin ports from CSV rates');
+
+    try {
+      // Get unique origin port codes from CSV rates
+      const originCodes = await this.csvRateSearchService.getAvailableOrigins();
+
+      // Fetch port details from database
+      const ports = await this.portRepository.findByCodes(originCodes);
+
+      // Map to response DTO with port details
+      const origins: RoutePortInfoDto[] = originCodes.map(code => {
+        const port = ports.find(p => p.code === code);
+        if (port) {
+          return {
+            code: port.code,
+            name: port.name,
+            city: port.city,
+            country: port.country,
+            countryName: port.countryName,
+            displayName: port.getDisplayName(),
+            latitude: port.coordinates.latitude,
+            longitude: port.coordinates.longitude,
+          };
+        }
+        // Fallback if port not found in database
+        return {
+          code,
+          name: code,
+          city: '',
+          country: code.substring(0, 2),
+          countryName: '',
+          displayName: code,
+        };
+      });
+
+      // Sort by display name
+      origins.sort((a, b) => a.displayName.localeCompare(b.displayName));
+
+      return {
+        origins,
+        total: origins.length,
+      };
+    } catch (error: any) {
+      this.logger.error(
+        `Failed to fetch available origins: ${error?.message || 'Unknown error'}`,
+        error?.stack
+      );
+      throw error;
+    }
+  }
+
+  /**
+   * Get available destination ports for a given origin
+   * Returns only destinations that have routes from the specified origin in CSV files
+   */
+  @Get('available-routes/destinations')
+  @UseGuards(JwtAuthGuard)
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({
+    summary: 'Get available destination ports for a given origin',
+    description:
+      'Returns list of destination ports that have shipping routes from the specified origin port in CSV rate files. Use this to populate destination port selection dropdown after origin is selected.',
+  })
+  @ApiQuery({
+    name: 'origin',
+    required: true,
+    description: 'Origin port code (UN/LOCODE format, e.g., NLRTM)',
+    example: 'NLRTM',
+  })
+  @ApiResponse({
+    status: HttpStatus.OK,
+    description: 'List of available destination ports with details',
+    type: AvailableDestinationsDto,
+  })
+  @ApiResponse({
+    status: 401,
+    description: 'Unauthorized - missing or invalid token',
+  })
+  @ApiBadRequestResponse({
+    description: 'Origin port code is required',
+  })
+  async getAvailableDestinations(
+    @Query('origin') origin: string
+  ): Promise<AvailableDestinationsDto> {
+    this.logger.log(`Fetching available destinations for origin: ${origin}`);
+
+    if (!origin) {
+      throw new Error('Origin port code is required');
+    }
+
+    try {
+      // Get destination port codes for this origin from CSV rates
+      const destinationCodes = await this.csvRateSearchService.getAvailableDestinations(origin);
+
+      // Fetch port details from database
+      const ports = await this.portRepository.findByCodes(destinationCodes);
+
+      // Map to response DTO with port details
+      const destinations: RoutePortInfoDto[] = destinationCodes.map(code => {
+        const port = ports.find(p => p.code === code);
+        if (port) {
+          return {
+            code: port.code,
+            name: port.name,
+            city: port.city,
+            country: port.country,
+            countryName: port.countryName,
+            displayName: port.getDisplayName(),
+            latitude: port.coordinates.latitude,
+            longitude: port.coordinates.longitude,
+          };
+        }
+        // Fallback if port not found in database
+        return {
+          code,
+          name: code,
+          city: '',
+          country: code.substring(0, 2),
+          countryName: '',
+          displayName: code,
+        };
+      });
+
+      // Sort by display name
+      destinations.sort((a, b) => a.displayName.localeCompare(b.displayName));
+
+      return {
+        origin: origin.toUpperCase(),
+        destinations,
+        total: destinations.length,
+      };
+    } catch (error: any) {
+      this.logger.error(
+        `Failed to fetch available destinations: ${error?.message || 'Unknown error'}`,
+        error?.stack
+      );
+      throw error;
+    }
+  }
+
   /**
    * Get available companies
    */

apps/backend/src/application/dto/csv-rate-upload.dto.ts

@@ -209,3 +209,101 @@ export class FilterOptionsDto {
   })
   currencies: string[];
 }
+
+/**
+ * Port Info for Route Response DTO
+ * Contains port details with coordinates for map display
+ */
+export class RoutePortInfoDto {
+  @ApiProperty({
+    description: 'UN/LOCODE port code',
+    example: 'NLRTM',
+  })
+  code: string;
+
+  @ApiProperty({
+    description: 'Port name',
+    example: 'Rotterdam',
+  })
+  name: string;
+
+  @ApiProperty({
+    description: 'City name',
+    example: 'Rotterdam',
+  })
+  city: string;
+
+  @ApiProperty({
+    description: 'Country code (ISO 3166-1 alpha-2)',
+    example: 'NL',
+  })
+  country: string;
+
+  @ApiProperty({
+    description: 'Country full name',
+    example: 'Netherlands',
+  })
+  countryName: string;
+
+  @ApiProperty({
+    description: 'Display name for UI',
+    example: 'Rotterdam, Netherlands (NLRTM)',
+  })
+  displayName: string;
+
+  @ApiProperty({
+    description: 'Latitude coordinate',
+    example: 51.9244,
+    required: false,
+  })
+  latitude?: number;
+
+  @ApiProperty({
+    description: 'Longitude coordinate',
+    example: 4.4777,
+    required: false,
+  })
+  longitude?: number;
+}
+
+/**
+ * Available Origins Response DTO
+ * Returns list of origin ports that have routes in CSV rates
+ */
+export class AvailableOriginsDto {
+  @ApiProperty({
+    description: 'List of origin ports with available routes in CSV rates',
+    type: [RoutePortInfoDto],
+  })
+  origins: RoutePortInfoDto[];
+
+  @ApiProperty({
+    description: 'Total number of available origin ports',
+    example: 15,
+  })
+  total: number;
+}
+
+/**
+ * Available Destinations Response DTO
+ * Returns list of destination ports available for a given origin
+ */
+export class AvailableDestinationsDto {
+  @ApiProperty({
+    description: 'Origin port code that was used to filter destinations',
+    example: 'NLRTM',
+  })
+  origin: string;
+
+  @ApiProperty({
+    description: 'List of destination ports available from the given origin',
+    type: [RoutePortInfoDto],
+  })
+  destinations: RoutePortInfoDto[];
+
+  @ApiProperty({
+    description: 'Total number of available destinations for this origin',
+    example: 8,
+  })
+  total: number;
+}

apps/backend/src/domain/services/csv-rate-search.service.ts

@@ -239,6 +239,60 @@ export class CsvRateSearchService implements SearchCsvRatesPort {
     return Array.from(types).sort();
   }
 
+  /**
+   * Get all unique origin port codes from CSV rates
+   * Used to limit port selection to only those with available routes
+   */
+  async getAvailableOrigins(): Promise<string[]> {
+    const allRates = await this.loadAllRates();
+    const origins = new Set(allRates.map(rate => rate.origin.getValue()));
+    return Array.from(origins).sort();
+  }
+
+  /**
+   * Get all destination port codes available for a given origin
+   * Used to limit destination selection based on selected origin
+   */
+  async getAvailableDestinations(origin: string): Promise<string[]> {
+    const allRates = await this.loadAllRates();
+    const originCode = PortCode.create(origin);
+
+    const destinations = new Set(
+      allRates
+        .filter(rate => rate.origin.equals(originCode))
+        .map(rate => rate.destination.getValue())
+    );
+
+    return Array.from(destinations).sort();
+  }
+
+  /**
+   * Get all available routes (origin-destination pairs) from CSV rates
+   * Returns a map of origin codes to their available destination codes
+   */
+  async getAvailableRoutes(): Promise<Map<string, string[]>> {
+    const allRates = await this.loadAllRates();
+    const routeMap = new Map<string, Set<string>>();
+
+    allRates.forEach(rate => {
+      const origin = rate.origin.getValue();
+      const destination = rate.destination.getValue();
+
+      if (!routeMap.has(origin)) {
+        routeMap.set(origin, new Set());
+      }
+      routeMap.get(origin)!.add(destination);
+    });
+
+    // Convert Sets to sorted arrays
+    const result = new Map<string, string[]>();
+    routeMap.forEach((destinations, origin) => {
+      result.set(origin, Array.from(destinations).sort());
+    });
+
+    return result;
+  }
+
   /**
    * Load all rates from all CSV files
    */

apps/frontend/app/dashboard/search-advanced/page.tsx

@@ -2,15 +2,20 @@
  * Advanced Rate Search Page
  *
  * Complete search form with all filters and best options display
+ * Uses only ports available in CSV rates for origin/destination selection
  */
 
 'use client';
 
-import { useState, useMemo } from 'react';
+import { useState, useEffect } from 'react';
 import { useRouter } from 'next/navigation';
-import { Search } from 'lucide-react';
+import { Search, Loader2 } from 'lucide-react';
 import { useQuery } from '@tanstack/react-query';
-import { searchPorts, Port } from '@/lib/api/ports';
+import {
+  getAvailableOrigins,
+  getAvailableDestinations,
+  RoutePortInfo,
+} from '@/lib/api/rates';
 import dynamic from 'next/dynamic';
 
 // Import dynamique pour éviter les erreurs SSR avec Leaflet
@@ -93,24 +98,60 @@ export default function AdvancedSearchPage() {
   const [destinationSearch, setDestinationSearch] = useState('');
   const [showOriginDropdown, setShowOriginDropdown] = useState(false);
   const [showDestinationDropdown, setShowDestinationDropdown] = useState(false);
-  const [selectedOriginPort, setSelectedOriginPort] = useState<Port | null>(null);
-  const [selectedDestinationPort, setSelectedDestinationPort] = useState<Port | null>(null);
+  const [selectedOriginPort, setSelectedOriginPort] = useState<RoutePortInfo | null>(null);
+  const [selectedDestinationPort, setSelectedDestinationPort] = useState<RoutePortInfo | null>(null);
 
-  // Port autocomplete queries
-  const { data: originPortsData } = useQuery({
-    queryKey: ['ports', originSearch],
-    queryFn: () => searchPorts({ query: originSearch, limit: 10 }),
-    enabled: originSearch.length >= 2 && showOriginDropdown,
+  // Fetch available origins from CSV rates
+  const { data: originsData, isLoading: isLoadingOrigins } = useQuery({
+    queryKey: ['available-origins'],
+    queryFn: getAvailableOrigins,
   });
 
-  const { data: destinationPortsData } = useQuery({
-    queryKey: ['ports', destinationSearch],
-    queryFn: () => searchPorts({ query: destinationSearch, limit: 10 }),
-    enabled: destinationSearch.length >= 2 && showDestinationDropdown,
+  // Fetch available destinations based on selected origin
+  const { data: destinationsData, isLoading: isLoadingDestinations } = useQuery({
+    queryKey: ['available-destinations', searchForm.origin],
+    queryFn: () => getAvailableDestinations(searchForm.origin),
+    enabled: !!searchForm.origin,
   });
 
-  const originPorts = originPortsData?.ports || [];
-  const destinationPorts = destinationPortsData?.ports || [];
+  // Filter origins based on search input
+  const filteredOrigins = (originsData?.origins || []).filter(port => {
+    if (!originSearch || originSearch.length < 1) return true;
+    const searchLower = originSearch.toLowerCase();
+    return (
+      port.code.toLowerCase().includes(searchLower) ||
+      port.name.toLowerCase().includes(searchLower) ||
+      port.city.toLowerCase().includes(searchLower) ||
+      port.countryName.toLowerCase().includes(searchLower)
+    );
+  });
+
+  // Filter destinations based on search input
+  const filteredDestinations = (destinationsData?.destinations || []).filter(port => {
+    if (!destinationSearch || destinationSearch.length < 1) return true;
+    const searchLower = destinationSearch.toLowerCase();
+    return (
+      port.code.toLowerCase().includes(searchLower) ||
+      port.name.toLowerCase().includes(searchLower) ||
+      port.city.toLowerCase().includes(searchLower) ||
+      port.countryName.toLowerCase().includes(searchLower)
+    );
+  });
+
+  // Reset destination when origin changes
+  useEffect(() => {
+    if (searchForm.origin && selectedDestinationPort) {
+      // Check if current destination is still valid for new origin
+      const isValidDestination = destinationsData?.destinations?.some(
+        d => d.code === searchForm.destination
+      );
+      if (!isValidDestination) {
+        setSearchForm(prev => ({ ...prev, destination: '' }));
+        setSelectedDestinationPort(null);
+        setDestinationSearch('');
+      }
+    }
+  }, [searchForm.origin, destinationsData]);
 
   // Calculate total volume and weight
   const calculateTotals = () => {
@@ -188,38 +229,62 @@ export default function AdvancedSearchPage() {
     <div className="space-y-6">
       <h2 className="text-xl font-semibold text-gray-900">1. Informations Générales</h2>
 
+      {/* Info banner about available routes */}
+      <div className="bg-blue-50 border border-blue-200 rounded-md p-3">
+        <p className="text-sm text-blue-800">
+          Seuls les ports ayant des tarifs disponibles dans notre système sont proposés.
+          {originsData?.total && (
+            <span className="font-medium"> ({originsData.total} ports d'origine disponibles)</span>
+          )}
+        </p>
+      </div>
+
       <div className="grid grid-cols-2 gap-4">
-        {/* Origin Port with Autocomplete */}
+        {/* Origin Port with Autocomplete - Limited to CSV routes */}
         <div className="relative">
           <label className="block text-sm font-medium text-gray-700 mb-2">
             Port d'origine * {searchForm.origin && <span className="text-green-600 text-xs">✓ Sélectionné</span>}
           </label>
+          <div className="relative">
             <input
               type="text"
               value={originSearch}
               onChange={e => {
                 setOriginSearch(e.target.value);
                 setShowOriginDropdown(true);
-              if (e.target.value.length < 2) {
-                setSearchForm({ ...searchForm, origin: '' });
+                // Clear selection if user modifies the input
+                if (selectedOriginPort && e.target.value !== selectedOriginPort.displayName) {
+                  setSearchForm({ ...searchForm, origin: '', destination: '' });
+                  setSelectedOriginPort(null);
+                  setSelectedDestinationPort(null);
+                  setDestinationSearch('');
                 }
               }}
               onFocus={() => setShowOriginDropdown(true)}
-            placeholder="ex: Rotterdam, Paris, FRPAR"
+              onBlur={() => setTimeout(() => setShowOriginDropdown(false), 200)}
+              placeholder="Rechercher un port d'origine..."
               className={`w-full px-3 py-2 border rounded-md focus:ring-blue-500 focus:border-blue-500 ${
                 searchForm.origin ? 'border-green-500 bg-green-50' : 'border-gray-300'
               }`}
             />
-          {showOriginDropdown && originPorts && originPorts.length > 0 && (
+            {isLoadingOrigins && (
+              <div className="absolute right-3 top-1/2 -translate-y-1/2">
+                <Loader2 className="h-4 w-4 animate-spin text-gray-400" />
+              </div>
+            )}
+          </div>
+          {showOriginDropdown && filteredOrigins.length > 0 && (
             <div className="absolute left-0 right-0 mt-2 bg-white border border-gray-200 rounded-md shadow-lg max-h-60 overflow-y-auto z-50">
-              {originPorts.map((port: Port) => (
+              {filteredOrigins.slice(0, 15).map((port: RoutePortInfo) => (
                 <button
                   key={port.code}
                   type="button"
                   onClick={() => {
-                    setSearchForm({ ...searchForm, origin: port.code });
+                    setSearchForm({ ...searchForm, origin: port.code, destination: '' });
                     setOriginSearch(port.displayName);
                     setSelectedOriginPort(port);
+                    setSelectedDestinationPort(null);
+                    setDestinationSearch('');
                     setShowOriginDropdown(false);
                   }}
                   className="w-full text-left px-4 py-3 hover:bg-blue-50 border-b border-gray-100 last:border-b-0"
@@ -230,34 +295,60 @@ export default function AdvancedSearchPage() {
                   </div>
                 </button>
               ))}
+              {filteredOrigins.length > 15 && (
+                <div className="px-4 py-2 text-xs text-gray-500 bg-gray-50">
+                  +{filteredOrigins.length - 15} autres résultats. Affinez votre recherche.
+                </div>
+              )}
+            </div>
+          )}
+          {showOriginDropdown && filteredOrigins.length === 0 && !isLoadingOrigins && originsData && (
+            <div className="absolute left-0 right-0 mt-2 bg-white border border-gray-200 rounded-md shadow-lg p-4 z-50">
+              <p className="text-sm text-gray-500">Aucun port d'origine trouvé pour "{originSearch}"</p>
             </div>
           )}
         </div>
 
-        {/* Destination Port with Autocomplete */}
+        {/* Destination Port with Autocomplete - Limited to routes from selected origin */}
         <div className="relative">
           <label className="block text-sm font-medium text-gray-700 mb-2">
             Port de destination * {searchForm.destination && <span className="text-green-600 text-xs">✓ Sélectionné</span>}
           </label>
+          <div className="relative">
             <input
               type="text"
               value={destinationSearch}
               onChange={e => {
                 setDestinationSearch(e.target.value);
                 setShowDestinationDropdown(true);
-              if (e.target.value.length < 2) {
+                // Clear selection if user modifies the input
+                if (selectedDestinationPort && e.target.value !== selectedDestinationPort.displayName) {
                   setSearchForm({ ...searchForm, destination: '' });
+                  setSelectedDestinationPort(null);
                 }
               }}
               onFocus={() => setShowDestinationDropdown(true)}
-            placeholder="ex: Shanghai, New York, CNSHA"
+              onBlur={() => setTimeout(() => setShowDestinationDropdown(false), 200)}
+              disabled={!searchForm.origin}
+              placeholder={searchForm.origin ? 'Rechercher une destination...' : 'Sélectionnez d\'abord un port d\'origine'}
               className={`w-full px-3 py-2 border rounded-md focus:ring-blue-500 focus:border-blue-500 ${
                 searchForm.destination ? 'border-green-500 bg-green-50' : 'border-gray-300'
-            }`}
+              } ${!searchForm.origin ? 'bg-gray-100 cursor-not-allowed' : ''}`}
             />
-          {showDestinationDropdown && destinationPorts && destinationPorts.length > 0 && (
+            {isLoadingDestinations && searchForm.origin && (
+              <div className="absolute right-3 top-1/2 -translate-y-1/2">
+                <Loader2 className="h-4 w-4 animate-spin text-gray-400" />
+              </div>
+            )}
+          </div>
+          {searchForm.origin && destinationsData?.total !== undefined && (
+            <p className="text-xs text-gray-500 mt-1">
+              {destinationsData.total} destination{destinationsData.total > 1 ? 's' : ''} disponible{destinationsData.total > 1 ? 's' : ''} depuis {selectedOriginPort?.name || searchForm.origin}
+            </p>
+          )}
+          {showDestinationDropdown && filteredDestinations.length > 0 && (
             <div className="absolute left-0 right-0 mt-2 bg-white border border-gray-200 rounded-md shadow-lg max-h-60 overflow-y-auto z-50">
-              {destinationPorts.map((port: Port) => (
+              {filteredDestinations.slice(0, 15).map((port: RoutePortInfo) => (
                 <button
                   key={port.code}
                   type="button"
@@ -275,13 +366,23 @@ export default function AdvancedSearchPage() {
                   </div>
                 </button>
               ))}
+              {filteredDestinations.length > 15 && (
+                <div className="px-4 py-2 text-xs text-gray-500 bg-gray-50">
+                  +{filteredDestinations.length - 15} autres résultats. Affinez votre recherche.
+                </div>
+              )}
+            </div>
+          )}
+          {showDestinationDropdown && filteredDestinations.length === 0 && !isLoadingDestinations && searchForm.origin && destinationsData && (
+            <div className="absolute left-0 right-0 mt-2 bg-white border border-gray-200 rounded-md shadow-lg p-4 z-50">
+              <p className="text-sm text-gray-500">Aucune destination trouvée pour "{destinationSearch}"</p>
             </div>
           )}
         </div>
       </div>
 
       {/* Carte interactive de la route maritime */}
-      {selectedOriginPort && selectedDestinationPort && (
+      {selectedOriginPort && selectedDestinationPort && selectedOriginPort.latitude && selectedDestinationPort.latitude && (
         <div className="mt-6 border border-gray-200 rounded-lg overflow-hidden">
           <div className="bg-gray-50 px-4 py-3 border-b border-gray-200">
             <h3 className="text-sm font-semibold text-gray-900">
@@ -293,12 +394,12 @@ export default function AdvancedSearchPage() {
           </div>
           <PortRouteMap
             portA={{
-              lat: selectedOriginPort.coordinates.latitude,
-              lng: selectedOriginPort.coordinates.longitude,
+              lat: selectedOriginPort.latitude,
+              lng: selectedOriginPort.longitude!,
             }}
             portB={{
-              lat: selectedDestinationPort.coordinates.latitude,
-              lng: selectedDestinationPort.coordinates.longitude,
+              lat: selectedDestinationPort.latitude,
+              lng: selectedDestinationPort.longitude!,
             }}
             height="400px"
           />

apps/frontend/src/lib/api/rates.ts

@@ -4,7 +4,7 @@
  * Endpoints for searching shipping rates (both API and CSV-based)
  */
 
-import { post } from './client';
+import { get, post } from './client';
 import type {
   RateSearchRequest,
   RateSearchResponse,
@@ -14,6 +14,37 @@ import type {
   FilterOptionsResponse,
 } from '@/types/api';
 
+/**
+ * Route Port Info - port details with coordinates
+ */
+export interface RoutePortInfo {
+  code: string;
+  name: string;
+  city: string;
+  country: string;
+  countryName: string;
+  displayName: string;
+  latitude?: number;
+  longitude?: number;
+}
+
+/**
+ * Available Origins Response
+ */
+export interface AvailableOriginsResponse {
+  origins: RoutePortInfo[];
+  total: number;
+}
+
+/**
+ * Available Destinations Response
+ */
+export interface AvailableDestinationsResponse {
+  origin: string;
+  destinations: RoutePortInfo[];
+  total: number;
+}
+
 /**
  * Search shipping rates (API-based)
  * POST /api/v1/rates/search
@@ -58,3 +89,29 @@ export async function getAvailableCompanies(): Promise<AvailableCompaniesRespons
 export async function getFilterOptions(): Promise<FilterOptionsResponse> {
   return post<FilterOptionsResponse>('/api/v1/rates/filters/options');
 }
+
+/**
+ * Get available origin ports from CSV rates
+ * GET /api/v1/rates/available-routes/origins
+ *
+ * Returns only ports that have shipping routes defined in CSV rate files.
+ * Use this to populate origin port selection dropdown.
+ */
+export async function getAvailableOrigins(): Promise<AvailableOriginsResponse> {
+  return get<AvailableOriginsResponse>('/api/v1/rates/available-routes/origins');
+}
+
+/**
+ * Get available destination ports for a given origin
+ * GET /api/v1/rates/available-routes/destinations?origin=XXXX
+ *
+ * Returns only ports that have shipping routes from the specified origin port.
+ * Use this to populate destination port selection after origin is selected.
+ */
+export async function getAvailableDestinations(
+  origin: string
+): Promise<AvailableDestinationsResponse> {
+  return get<AvailableDestinationsResponse>(
+    `/api/v1/rates/available-routes/destinations?origin=${encodeURIComponent(origin)}`
+  );
+}