/*
Copyright 2015-2022 Ian Jauslin

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.
*/

/*
meantools

Utility to perform various operations on flow equations

*/


#include <stdio.h>
#include <stdlib.h>

// pre-compiler definitions
#include "definitions.cpp"

// grouped representation of polynomials
#include "grouped_polynomial.h"
// command line parser
#include "cli_parser.h"
// parse input file
#include "parse_file.h"
// arrays
#include "array.h"
// string functions
#include "istring.h"
// tools
#include "meantools_deriv.h"
#include "meantools_eval.h"
#include "meantools_expand.h"

#define DERIV_COMMAND 1
#define EVAL_COMMAND 2
#define EXPAND_COMMAND 3

// read cli arguments
int read_args_meantools(int argc,const char* argv[], Str_Array* str_args, Meantools_Options* opts);
// print usage message
int print_usage_meantools();


int main (int argc, const char* argv[]){
  // string arguments
  Str_Array str_args;
  // options
  Meantools_Options opts;

  // read command-line arguments
  read_args_meantools(argc,argv,&str_args, &opts);

  switch(opts.command){
  case DERIV_COMMAND: tool_deriv(str_args,opts);
    break;
  case EVAL_COMMAND: tool_eval(str_args,opts);
    break;
  case EXPAND_COMMAND: tool_expand(str_args,opts);
    break;
  }

  //free memory
  free_Str_Array(str_args);
  return(0);
}


// parse command-line arguments
int read_args_meantools(int argc,const char* argv[], Str_Array* str_args, Meantools_Options* opts){

  // if there are no arguments
  if(argc==1){
    print_usage_meantools();
    exit(-1);
  }

  if(str_cmp((char*)argv[1],"differentiate")==1){
    (*opts).command=DERIV_COMMAND;
    tool_deriv_read_args(argc, argv, str_args, opts);
  }
  else if(str_cmp((char*)argv[1],"eval")==1){
    (*opts).command=EVAL_COMMAND;
    tool_eval_read_args(argc, argv, str_args, opts);
  }
  else if(str_cmp((char*)argv[1],"expand")==1){
    (*opts).command=EXPAND_COMMAND;
    tool_expand_read_args(argc, argv, str_args, opts);
  }
  else{
    print_usage_meantools();
    exit(-1);
  }

  return(0);
}

// print usage message
int print_usage_meantools(){
  printf("\nusage:\n   meantools differentiate [-d derivatives] [-V variables] [-C] [config_file]\n   meantools eval [-R values] [-P precision] [-E max_exponent] [config_file]\n   meantools expand [-N namespace] [config_file]\n\n");
  return(0);
}