% The module should have the same name as the file
-module(couch_httpd_numidx).
-export([handle_numidx_req/3]).
-include("couch_db.hrl").

-import(couch_httpd, [send_json/2, send_method_not_allowed/2]).


% path_parts is the url, split at the slashes
handle_numidx_req(#httpd{method='GET',
        path_parts=[DbName, <<"_design">>, DName, <<"_numidx">>, JsonRange]
        }=Req, Db, _DDoc) ->
    % Parse range parameter
    Range = list_to_tuple(?JSON_DECODE(JsonRange)),
    % Build the numidx data structure from the database
    ok = couch_numidx:get_docs(Db),
    % Perform the range search
    Result = couch_numidx:range_search(Range),
    % CouchDB normally returns JSON, so do we
    send_json(Req, {[
        {<<"db">>, DbName},
        {<<"designdoc">>, DName},
        {<<"result">>, Result}
    ]});
% We allow only GET and HEAD requests
handle_numidx_req(Req, _, _) ->
    send_method_not_allowed(Req, "GET,HEAD").