// SPDX-License-Identifier: MPL-2.0
// Copyright (C) 2015-2016, PCA Peugeot Citroën, XS Embedded GmbH, TomTom International B.V., Continental Automotive GmbH,
// Alpine Electronics R&D Europe GmbH, Harman-Becker Automotive GmbH.
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
// this file, you can obtain one at http://mozilla.org/MPL/2.0/.
package org.genivi.navigation.freetextsearchservice

import org.genivi.CommonTypes.* from "../../CommonTypes.fidl"
import org.genivi.navigation.NavigationTypes.* from "../NavigationTypes.fidl"

<**
@description : This interface allows a user to find locations by entering a single text string.
A user of a navigation system needs to find a location on a map, e.g. to use as a destination of a route.
Locations can be identified by different means, for example:
 - An address, e.g. '2400 Camino Ramon, San Ramon, California, USA.'
 - A point of interest, e.g. 'Eiffel Tower'.
 - A named place, .e.g. 'Amsterdam'

The system will respond with locations that match the given text string.
For each location, a location handle will be returned that can be used as input to other interfaces,
for example to plan a route, or to get more attributes of a point of interest.
A free text search is initiated by sending a free text search request (Method FtsRequest) containing the search text and search options input by the user.
Depending on search options both addresses and POIs are searched for matches. A single request may get multiple result responses (via Signals):
 - ftsResultAddresses to report address matches
 - ftsResultPois to report POI matches
 - ftsResultPoiSuggestions to give suggestions for doing specific POI queries
Each response comes as soon as the results are available, so address results may be received while the search process continues looking for POI matches.
The order in which the results will be received is not defined. The search engine determines which results to return first based on the user input.
If there are no matches found in a certain type of result, then no response for that type will be sent.
E.g. if the user input only matches an address but not POIs, then no ftsResultPois response will be sent.
To indicate that the search has finished an ftsDone signal is sent.

**>

interface FreeTextSearch {
    version {
        major 1
        minor 0
    }

    <**
        @description: Contains constant values used in this interface 
    **>
    enumeration FtsRangeConstants {
    	MAX_FUZZY_LEVEL = 5
    	MAX_SHAPES = 31
    	MAX_STRING_LIST_SIZE = 100
    	MAX_RESULTS = 500
    	MAX_STRING_LENGTH = 4095
    	MAX_LOCATION_HANDLES_LIST_SIZE = 4096
    }
    
    <**
    @description: Search results are returned in some sequential pages. Each
        page is identified with an ID called pageId. The pageId of the first 
        page is zero and pageIds are incremented by one for each subsequent page. 
        Value -1 indicates that pageId is not specified.
    **>
    typedef PageId is Int32

    <**
    @description: Type to represent most texts in this interface..
        Character set = UNICODE
        Maximum length = MAX_STRING_LENGTH
    
    **>
    typedef FtsString is String

    <**
    @description: A list of strings
        maximum length = MAX_STRING_LIST_SIZE
    **>
    array FtsStringList of FtsString

    <**
    @description: A route corridor
    **>
    struct RouteCorridor {

        <**
        @description: Route handle used to select a route.
            Can be 0 to use the route for which guidance is started with startGuidance 
            from Guidance interface.
        **>
        Handle routeHandle
    
        <**
        @description: Offset on route from the start of the route, in meters.
        **>
        DistanceInMeters startOffset
    
        <**
        @description: Width of the corridor, in meters.
        **>
        DistanceInMeters corridorWidth
    
        <**
        @description: Length of the corridor, in meters.
            Can be 0 to search until the end of the route.
        **>
        DistanceInMeters corridorLength
    } 

    <**
        @description: A union to contain any of the possible search shapes.
        The search can be limited to the area of a circle or rectangle or to a route corridor 
        around a planned route. 
    **>
    union Shape {
        Circle circle
        Rectangle rectangle
        RouteCorridor routeCorridor
    }

    <**
    @description: A list of shapes.
        maximum length = MAX_SHAPES
    
    **>
    array ShapeList of Shape

    <**
    @description: A maximum number of results to be returned.
        Range[0:MAX_RESULTS]
    **>
    typedef PageSize is UInt16

    <**
    @description: Search options for a search request.
        The options are flags which can be OR-ed together to create SearchOptions.
    **>
    enumeration SearchOption {

        <**
            @description: Search addresses. 
        **>
        ADDRESS = 1

        <**
            @description: Search POIs. 
        **>
        POI = 2

        <**
            @description: Get POI suggestions. 
        **>
        POI_SUGGESTION = 4

        <**
            @description: Do not search places when doing an address search. 
        **>
        NO_PLACES = 65536

        <**
            @description: Do not search streets when doing an address search. 
        **>
        NO_STREETS = 131072

        <**
            @description: Do not make assumptions on POI categories. 
        **>
        NO_POI_CATEGORY_ASSUMPTIONS = 262144
        
        <**
            @description: Do not search political divisions when doing an address search.
        **>
        NO_POLITICAL_DIVISIONS = 524288
        
        <**
            @description: Indicate POI links.
            If this option is set in the query, POI results will be marked appropriately 
            if they are parents or children. 
        **>        
        POI_INDICATE_LINKS = 1048576
    }

    <**
    @description: An OR-ed combination of SearchOption flags.
        Range[0:0xffffffff]
    **>
    typedef SearchOptions is UInt32

    <**
        @description: Search request status. 
    **>
    enumeration FtsStatus {

        <**
            @description: No problem. 
        **>
        OK = 0

        <**
            @description: User aborted search. 
        **>
        ABORTED = 1

        <**
            @description: Search string is too short to evaluate. 
        **>
        PREFIX_TOO_SHORT = 2

        <**
            @description: An internal error occurred in the FTS engine.  
        **>
        INTERNAL_ERROR = 3

        <**
            @description: No FTS index for the current map. 
        **>
        INDEX_MISSING = 4

        <**
            @description: The FTS index format is not supported. 
        **>
        BAD_VERSION = 5

        <**
            @description: A search query not supported by the FTS engine. 
        **>
        INVALID_PARAMETER_QUERY = 6

        <**
            @description: A search location not on this earth. 
        **>
        INVALID_PARAMETER_SEARCH_LOCATION = 7

        <**
            @description: An invalid page size. 
        **>
        INVALID_PARAMETER_PAGE_SIZE = 8

        <**
            @description: Invalid search options passed to the FTS engine. 
        **>
        INVALID_PARAMETER_SEARCH_OPTIONS = 9

        <**
            @description: Invalid search conditions passed to the FTS engine. 
        **>
        INVALID_PARAMETER_SEARCH_CONDITIONS = 10

        <**
            @description: One or  more of the search shapes are invalid. 
        **>
        INVALID_PARAMETER_SEARCH_SHAPES = 11
        
        <**
            @description: The fuzzy level is not in the allowed range: [0,MAX_FUZZY_LEVEL].
        **>
        INVALID_PARAMETER_FUZZY_LEVEL = 12
        
        <**
            @description: The input consisted of invalid geographic coordinates.
        **>        
        INVALID_COORDINATES_INPUT = 13
    }

    <**
    @description: Handle to a location.
        Range[0:0xffffffff]
    
    **>
    typedef LocationHandle is UInt32

    <**
    @description: A list of LocationHandles.
        maximum length = MAX_LOCATION_HANDLES_LIST_SIZE
    
    **>
    array LocationHandleList of LocationHandle

    <**
    @description: If a user entered a non-existing house number then the closest existing
        number is returned. The houseNumberFromInput will contain the house
        number from the user input, the houseNumber will contain closest house number.
        If the map does not contain house numbers for the street, but the user
        input seems to have a house number, then houseNumber will be empty and
        houseNumberFromInput will contain the number from the input.              
    **>
    struct StreetDetails {
        FtsString streetName

        <**
        @description: If a user entered a non-existing house number then the closest existing
            number is returned. The houseNumberFromInput will contain the house
            number from the user input, the houseNumber will contain closest house number.
            If the map does not contain house numbers for the street, but the user
            input seems to have a house number, then houseNumber will be empty and
            houseNumberFromInput will contain the number from the input.                 
        **>
        FtsString houseNumber

        <**
        @description: The house number that the search engine recognized in the user input.
            Can be empty.
        **>
        FtsString houseNumberFromInput
    }

    enumeration PlaceType {

        <**
            @description: a place of unknown type. 
        **>
        OTHER = 0

        <**
            @description: a center of a settlement. 
        **>
        SETTLEMENT = 1
    }

    <**
        @description: Place details. 
    **>
    struct PlaceDetails {
        PlaceType placeType
        FtsString placeName

        <**
            @description: The bounding box of this place (an estimate). 
        **>
        Rectangle placeBoundingBox
    }

    <**
        @description: Mapcode details. 
    **>
    struct MapCodeDetails {

        <**
        @description: If the location of the mapcode is close to a street, this field
            contains the name of that street, otherwise this field is left empty.
        **>
        FtsString closestStreetName
    }

    <**
        @description: Political division details (country or state). 
    **>
    struct PoliticalDivisionDetails {
        <**
            @description: The bounding box of the political division. 
        **>
        Rectangle boundingBox                 
    }
    
    <**
        @description: Geographic coordinate pair details. 
    **>    
    struct CoordinatesDetails
    {
        <**
            @description: This field contains the name of the street that is closest 
                to the coordinates, as long as the straight line distance to 
                the closest street location is less than 25 meters.
        **>
        FtsString    closestStreetName
    } 

    
    <**
        @description: A union to contain any of the specific types of address details. 
    **>
    union AddressDetails {
        StreetDetails streetDetails
        PlaceDetails placeDetails
        MapCodeDetails mapCodeDetails
        PoliticalDivisionDetails politicalDivisionDetails
        CoordinatesDetails coordinatesDetails
    }

    <**
    @description: A higher score means a better match.
        Range[0:0xffff]
    
    **>
    typedef Score is UInt16

    <**
        @description: Address information. 
    **>
    struct Address {
        LocationHandle locationHandle
        FtsString countryCode

        <**
            @description: Optional state code. 
        **>
        FtsString stateCode

        <**
            @description: There can be multiple place names. 
        **>
        FtsStringList places

        <**
            @description: There can be multiple postal codes assigned to a street. 
        **>
        FtsStringList postalCodes

        <**
        @description: Mapcode of the coordinate.
            A mapcode represents a location. Every location on Earth can be represented by a mapcode.
            Mapcodes were designed to be short, easy to recognize, remember and communicate.
            They are precise to a few meters. For details see http://www.mapcode.com.                 
        **>
        FtsString mapCode
        AddressDetails addressDetails
        Coordinate2D coordinate

        <**
        @description: Distance in meters from the search location.
            -1 if no search location is given.
        **>
        DistanceInMeters distance

        <**
            @description: A higher score means a better match. 
        **>
        Score score

        <**
            @description: Indicates whether this match is fuzzy, i.e. it was matched with misspellings. 
        **>
        Boolean fuzzyMatch
    }

    <**
    @description: A list of addresses.
        maximum length = MAX_RESULTS
    **>
    array Addresses of Address

    <**
    @description: Numerical POI category code.
        Range[0:0xffffffff]
    **>
    typedef POICategoryCode is UInt32

    <**
        @description: POI information. 
    **>
    struct POI {
        LocationHandle locationHandle
        POICategoryCode categoryCode
        FtsStringList brandNames
        FtsString poiName
        FtsString address
        FtsStringList place
        FtsStringList postalCode
        FtsString mapCode
        FtsString countryCode
        FtsString stateCode
        FtsString telephone
        Coordinate2D coordinate

        <**
        @description: Distance in meters from the search location.
            -1 if no search location is given.
        **>
        DistanceInMeters distance

        <**
            @description: A higher score means a better match. 
        **>
        Score score

        <**
            @description: Indicates whether this match is fuzzy, i.e. it was matched with misspellings. 
        **>
        Boolean fuzzyMatch
        
        <**
            @description: Indicates that POI has parents.
        **>
        Boolean hasParents
        
        <**
            @description: Indicates that POI has children.
        **>
        Boolean hasChildren    
        
        <**
            @description: For searches along route, this value is the the detour distance, 
            in meters, expresses how much longer the total route will be if the POI is visited.
            The detour distance will be -1 for all searches that don’t use a route corridor 
            (searches in all map, in circle or rectangle).
        **>
        DistanceInMeters detourDistance
        
        <**
            @description: For searches along route, this value is the detour time, in seconds,
            expresses what’s the delay at the destination if the POI is visited.
            The detour time will be -1 for all searches that don’t use a route corridor 
            (searches in all map, in circle or rectangle).
        **>         
        Int32 detourTime 
    }

    <**
    @description: A list of POIs.
        maximum length = MAX_RESULTS
    
    **>
    array POIs of POI

    <**
        @description: Data type for POI category suggestions. 
    **>
    struct POICategory {
        POICategoryCode categoryCode
        FtsString categoryName

        <**
        @description: The search engine recognizes synonyms and names associated with a
            POI category. If a match on such a name is found, then this attribute is set to that name.
        **>
        FtsString matchedName

        <**
        @description: Text that can be used for a suggestion like: "<categoryName> <searchTextSuggestion>"
            Typically this contains the original query text, where the recognized
            category name or synonym has been removed.
        **>
        FtsString searchTextSuggestion

        <**
        @description: A list of addresses that can be used for suggestions like: "<categoryName> near <address>
            Note the addresses in this list do not have a valid location handle
            as the address is only needed to be displayed as a suggestion.
            The coordinates of an address can be used for a POI window query if the
            user picks a suggestion.                 
        **>
        Addresses nearAddressSuggestions

        <**
            @description: A higher score means a better match. 
        **>
        Score score
    }

    <**
    @description: A list of POI categories.
        maximum length = MAX_RESULTS
    
    **>
    array POICategories of POICategory

    <**
    @description: Indicates on a scale from 0 to MAX_FUZZY_LEVEL how fuzzy the search results can be.
        0 means only an exact search is performed, 1 is the lowest level of fuzzy search
        and MAX_FUZZY_LEVEL means a very fuzzy search.
        Range[0:MAX_FUZZY_LEVEL]
    
    **>
    typedef FuzzyLevel is Int8

    <**
        @description : This method returns the API version implemented by the content access module.
    **>
    method getVersion {
        out {

            <**
                @description: .
            **>
            Version ^version
        }
    }

    <**
    @description: Perform a free text search.        
        A single search request will trigger zero or one of each ftsResultAddresses, 
        ftsResultPois or ftsResultPoiSuggestions responses followed by an ftsDone response.
        Each response will contain at most one page of results. A next page of results can be 
        retrieved with the FtsNextPage request.
        
        A ftsRequest call creates a new FTS session identified with a unique sessionHandle. The 
        FTS session will explicitly be terminated by a ftsCancel call or will implicitly be terminated 
        by a subsequent ftsRequest call. When a new ftsRequest is sent before receiving a ftsDone response
        on the previous request, the previous request will be canceled. A ftsDone response on the previous 
        request will still be sent. This way each request gets a response.    
    **>
    method ftsRequest {
        in {

            <**
                @description: Text to match. 
            **>
            FtsString inputString

            <**
            @description: Location for scoring the search results.
                A result closer to this location gets a higher score than a result further away.
            **>
            Coordinate2D searchLocation

            <**
            @description: Limit the search to the union of several shapes (each can be a circle or a rectangle 
                or a route corridor around a planned route). Pass an empty list to search the whole map.
            **>
            ShapeList searchShapes

            <**
                @description: The maximum number of addresses and POIs that will be returned. 
            **>
            PageSize pageSize

            <**
            @description: Options to indicate what to search for.
                One or more values of SearchOption can be added together.
            **>
            SearchOptions searchOptions

            <**
            @description: Additional search conditions, space separated.
                The string can be empty when the POI search is not limited by categories
                and not limited by countries/states.
                Supported conditions:
                    "category:nnnn"  Limit the POI search to a one or more POI categories,
                                     where 'nnnn' is a comma-separated list of numerical POI category ids.
                    "country:aaaaa"  Limit the search to one or more countries (or states),
                                     where 'aaaaa' is a comma-separated list of ISO-3166-1 alpha 3
                                     country code concatenated with an optional ISO-3166-2 state code.
                Examples:
                                     "category:9373,9374": limits the POI search to the union of categories 9373 and 9374.
                                     "country:USACA": limits the search to the state of California.
                                     "category:6315 country:USACA,MEX": limits the POI search to category 6315
                                     and limits the search to the union of California state and Mexico.
            **>
            FtsString searchConditions

            <**
                @description: Indication of how fuzzy the search shall be performed. 
            **>
            FuzzyLevel fuzzyLevel
        }
        out {

            <**
            @description: A new FTS session is created with session handle equal to sessionHandle.
            **>
            Handle sessionHandle
            
            <**
            @description: The pageId of the search result to be returned (zero for the first page). 
            **>
            PageId pageId            
        }
        error {

            <**
            @description: Indicates no error.            
            **>
            OK

            <**
            @description: Indicates that no new FTS session can be created at the moment.
            **>
            NoMoreSessionHandles
        }
    }

    <**
    @description: Get next result page for the specified FTS session.
        This request will trigger zero or one of each ftsResultAddresses, ftsResultPois 
        or ftsResultPoiSuggestions responses followed by an ftsDone response.
        If no error is reported, ftsDone will be sent.
    
    **>
    method ftsNextPage {
        in {
           
            <**
            @description: Specifies the session.
            **>
            Handle sessionHandle
            
            <**
            @description: Options to indicate what to search for.
                One or more values of SearchOption can be added together.
                You can only get results for options that have been passed to the initial FtsRequest.
            **>
            SearchOptions searchOptions
        }
        out {

            <**
            @description: The pageId of the search result to be returned.
            **>
            PageId pageId              
        }        
        error {

            <**
            @description: Indicates no error.            
            **>
            OK

            <**
            @description: Indicates that a search request is already in progress. ftsDone has not yet been sent for the previous request.
            **>
            AlreadyInProgress

            <**
            @description: Indicates that no more search results are available for the given search session handle.
            **>
            NoMoreSearchResultsAvailable

            <**
            @description: Indicates that sessionHandle is unknown.            
            **>
            UnknownSessionHandle
        }
    }

    <**
        @description: Cancel an FTS session. 
    **>
    method ftsCancel {
        in {

            <**
            @description: Handle to identify the Free Text Search session to be cancelled.
            **>
            Handle sessionHandle
        }
        error {

            <**
            @description: Indicates no error.            
            **>
            OK

            <**
            @description: Indicates that sessionHandle is unknown.            
            **>
            UnknownSessionHandle
        }        
    }

    <**
        @description : Response indicating the search status. 
    **>
    broadcast ftsDone selective {
        out {

            <**
                @description: Specifies the session. 
            **>
            Handle sessionHandle
            
            <**
                @description: Specifies the page for which this response is sent. 
            **>
            PageId pageId          

            <**
                @description: Status of the search request. 
            **>
            FtsStatus ftsStatus
        }
    }

    <**
        @description : Response with address results. 
    **>
    broadcast ftsResultAddresses selective {
        out {

            <**
                @description: Specifies the session.  
            **>
            Handle sessionHandle
            
            <**
                @description: Specifies the page for which this response is sent.
            **>
            PageId pageId   

            <**
            @description: Matching addresses.
                The order of the addresses is the order of matching relevance.
                The first address is a better match than the last result.
            **>
            Addresses addresses

            <**
                @description: Flag to indicate if more addresses might be available in a next page. 
            **>
            Boolean moreAvailable
        }
    }

    <**
        @description : Response with POI results. 
    **>
    broadcast ftsResultPois selective {
        out {

            <**
                @description: Specifies the session.  
            **>
            Handle sessionHandle
            
            <**
                @description: Specifies the page for which this response is sent.
            **>
            PageId pageId

            <**
            @description: Matching POIs.
                The order of the POIs is the order of matching relevance.
                The first POI is a better match than the last result.
            **>
            POIs pois

            <**
                @description: Flag to indicate if more POIs might be available in a next page. 
            **>
            Boolean moreAvailable
        }
    }

    <**
        @description : Response with POI category suggestions. 
    **>
    broadcast ftsResultPoiSuggestions selective {
        out {

            <**
                @description: Specifies the session.  
            **>
            Handle sessionHandle
            
            <**
                @description: Specifies the page for which this response is sent. 
            **>
            PageId pageId

            <**
                @description: POI category suggestions. 
            **>
            POICategories poiCategories
        }
    }

    <**
        @description : Release handle(s) if they are not used anymore. 
    **>
    method deleteLocationHandles {
        in {

            <**
                @description: list of handles to release. 
            **>
            LocationHandleList locationHandleList
        }
    }

}