# Copyright 2023 Tomas Brabec
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

package require json::write;

proc isdict {dict} { 
    expr { [catch { dict info $dict } ] ? 0 : 1 }
}

# modified version from https://wiki.tcl-lang.org/page/Tcllib+JSON
proc dict2json {dict} {
    return [json::write object {*}[dict map {k v} ${dict} {
        if {[isdict $v]} {
            set v [dict2json $v];
        } else {
            if {[llength ${v}] > 1} {
                set l {};
                foreach r ${v} {
                    lappend l [json::write string ${r}];
                }
                set v [json::write array {*}${l}];
            } else {
                set v [::json::write string $v];
            }
        }
    }]];
}