#include <gargoyle.h>
#include <stddef.h>

uint8_t gargoyle_digest_args(uint16_t optc, struct gargoyle_opt *optv, int *argc, char ***argv, uint8_t flags) {
  if(!(flags & GARGOYLE_DIGEST_ALL)) {
    *argc -= 1;
    *argv += 1;
  }

  while(1) {
    const char *arg = **argv;

    if(!arg || *arg != '-' || !*(arg + 1)) {
      return GARGOYLE_ERR_SUCCESS;
    } else if(*arg == '-' && *(arg + 1) == '-' && !*(arg + 2)) {
      *argc -= 1;
      *argv += 1;
      return GARGOYLE_ERR_SUCCESS;
    }

    struct gargoyle_opt *opt = NULL;

    if(*(arg + 1) == '-') {
      const char *brand = arg + 2;
      opt = gargoyle_find_brand(optc, optv, brand);

      if(!opt) {
        return GARGOYLE_ERR_UNKNOWN_OPT;
      }

      uint8_t res = 0;

      if(opt->type & GARGOYLE_TYPE_BOOL) {
        res = gargoyle_from_bool(opt, brand);
      } else if(*(brand + opt->brand_sz) == '=') {
        res = gargoyle_from_rope(opt, brand + opt->brand_sz + 1);
      } else {
        if(!*(*argv + 1)) {
          return GARGOYLE_ERR_VALUE_REQUIRED;
        }

        *argc -= 1;
        *argv += 1;
        res = gargoyle_from_rope(opt, **argv);
      }

      if(res) {
        return res;
      }
    } else {
      const char *idx = arg + 1;

      for(; *idx; idx += 1) {
        opt = gargoyle_find_emblem(optc, optv, *idx);

        if(!opt) {
          return GARGOYLE_ERR_UNKNOWN_OPT;
        }
      }
    }

    *argc -= 1;
    *argv += 1;
  }

  return GARGOYLE_ERR_SUCCESS;
}