#include <stdbool.h>

#include "vieter_package_info.h"

#define PKG_INFO_STRING(key_ptr, field)                                        \
  if ((value_ptr = strstr(value_ptr, key_ptr)) != NULL) {                      \
    value_ptr += strlen(key_ptr);                                              \
    tail_ptr = strchr(value_ptr, '\n');                                        \
    tail_ptr[0] = '\0';                                                        \
    pkg_info->field = strdup(value_ptr);                                       \
    tail_ptr[0] = '\n';                                                        \
  }                                                                            \
  value_ptr = tail_ptr;

#define PKG_INFO_INT(key_ptr, field)                                           \
  value_ptr = strstr(value_ptr, key_ptr) + strlen(key_ptr);                    \
  tail_ptr = strchr(value_ptr, '\n');                                          \
  tail_ptr[0] = '\0';                                                          \
  pkg_info->field = atoi(value_ptr);                                           \
  tail_ptr[0] = '\n';                                                          \
  value_ptr = tail_ptr;

#define PKG_INFO_ARRAY(key_ptr, field)                                         \
  while ((value_ptr = strstr(value_ptr, key_ptr)) != NULL) {                   \
    value_ptr = value_ptr + strlen(key_ptr);                                   \
    tail_ptr = strchr(value_ptr, '\n');                                        \
    tail_ptr[0] = '\0';                                                        \
    if (pkg_info->field == NULL) {                                             \
      pkg_info->field = vieter_package_dynarray_init(4);                       \
    }                                                                          \
    vieter_package_dynarray_add(pkg_info->field, value_ptr);                   \
    tail_ptr[0] = '\n';                                                        \
    value_ptr = tail_ptr;                                                      \
  }                                                                            \
  value_ptr = tail_ptr;

vieter_package_info *vieter_package_info_init() {
  return calloc(1, sizeof(vieter_package_info));
}

void vieter_package_info_free(vieter_package_info *pkg_info) {
  FREE_STRING(pkg_info->name);
  FREE_STRING(pkg_info->base);
  FREE_STRING(pkg_info->version);
  FREE_STRING(pkg_info->description);
  FREE_STRING(pkg_info->url);
  FREE_STRING(pkg_info->arch);
  FREE_STRING(pkg_info->packager);
  FREE_STRING(pkg_info->pgpsig);

  vieter_package_dynarray_free(pkg_info->groups);
  vieter_package_dynarray_free(pkg_info->licenses);
  vieter_package_dynarray_free(pkg_info->replaces);
  vieter_package_dynarray_free(pkg_info->depends);
  vieter_package_dynarray_free(pkg_info->conflicts);
  vieter_package_dynarray_free(pkg_info->provides);
  vieter_package_dynarray_free(pkg_info->optdepends);
  vieter_package_dynarray_free(pkg_info->makedepends);
  vieter_package_dynarray_free(pkg_info->checkdepends);

  free(pkg_info);
}

void vieter_package_info_parse(vieter_package_info *pkg_info,
                               char *pkg_info_str) {
  char *value_ptr = pkg_info_str, *tail_ptr = NULL;

  PKG_INFO_STRING("\npkgname = ", name);
  PKG_INFO_STRING("\npkgbase = ", base);
  PKG_INFO_STRING("\npkgver = ", version);
  PKG_INFO_STRING("\npkgdesc = ", description);
  PKG_INFO_STRING("\nurl = ", url);
  PKG_INFO_INT("\nbuilddate = ", build_date);
  PKG_INFO_STRING("\npackager = ", packager);
  PKG_INFO_INT("\nsize = ", size);
  PKG_INFO_STRING("\narch = ", arch);
  PKG_INFO_ARRAY("\nlicense = ", licenses);
  PKG_INFO_ARRAY("\nreplaces = ", replaces);
  PKG_INFO_ARRAY("\ngroup = ", groups);
  PKG_INFO_ARRAY("\nconflict = ", conflicts);
  PKG_INFO_ARRAY("\nprovides = ", provides);
  PKG_INFO_ARRAY("\ndepend = ", depends);
  PKG_INFO_ARRAY("\noptdepend = ", optdepends);
  PKG_INFO_ARRAY("\nmakedepend = ", makedepends);
  PKG_INFO_ARRAY("\ncheckdepend = ", checkdepends);
}