// Copyright(c) 2017-2018, Intel Corporation

//

// Redistribution  and  use  in source  and  binary  forms,  with  or  without

// modification, are permitted provided that the following conditions are met:

//

// * Redistributions of  source code  must retain the  above copyright notice,

//   this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above copyright notice,

//   this list of conditions and the following disclaimer in the documentation

//   and/or other materials provided with the distribution.

// * Neither the name  of Intel Corporation  nor the names of its contributors

//   may be used to  endorse or promote  products derived  from this  software

//   without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT NOT LIMITED TO,  THE

// IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

// ARE DISCLAIMED.  IN NO EVENT  SHALL THE COPYRIGHT OWNER  OR CONTRIBUTORS BE

// LIABLE  FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL,  SPECIAL,  EXEMPLARY,  OR

// CONSEQUENTIAL  DAMAGES  (INCLUDING,  BUT  NOT LIMITED  TO,  PROCUREMENT  OF

// SUBSTITUTE GOODS OR SERVICES;  LOSS OF USE,  DATA, OR PROFITS;  OR BUSINESS

// INTERRUPTION)  HOWEVER CAUSED  AND ON ANY THEORY  OF LIABILITY,  WHETHER IN

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/*

 * test_utils.h

 */

#pragma once

#include <json-c/json.h>

#include <regex.h>

#include <memory>

#include <string>

namespace opae {

namespace testing {

class match_t {

 public:

  typedef std::shared_ptr<match_t> ptr_t;

  match_t(const std::string &str, const std::vector<std::string> &matches)

      : string_(str), groups_(matches) {}

  std::vector<std::string> &groups() { return groups_; }

  std::string group(uint32_t idx) { return groups_[idx]; }

  std::string str() { return string_; }

 private:

  std::string string_;

  std::vector<std::string> groups_;

};

template <uint64_t _M = 32>

class regex {

 public:

  typedef std::shared_ptr<regex> ptr_t;

  static regex::ptr_t create(const std::string &pattern, int flags = 0) {

    regex::ptr_t m(new regex(pattern));

    if (regcomp(&m->regex_, pattern.c_str(), flags | REG_EXTENDED)) {

      m.reset();

    }

    return m;

  }

  ~regex() { regfree(&regex_); }

  match_t::ptr_t match(const std::string str, int flags = 0) {

    std::vector<std::string> matches;

    match_t::ptr_t m;

    auto res =

        regexec(&regex_, str.c_str(), matches_.size(), matches_.data(), flags);

    if (!res) {

      for (const auto &m : matches_) {

        if (m.rm_so >= 0) {

          matches.push_back(str.substr(m.rm_so, m.rm_eo - m.rm_so));

        } else {

          break;

        }

      }

      m.reset(new match_t(str, matches));

    } else {

      regerror(res, &regex_, err_, 128);

    }

    return m;

  }

  std::string error() { return std::string(err_); }

 private:

  regex() = delete;

  regex(const std::string &pattern) : pattern_(pattern) {}

  std::string pattern_;

  regex_t regex_;

  char err_[128];

  std::array<regmatch_t, _M> matches_;

};

class jobject {

 public:

  jobject() { obj_ = json_object_new_object(); }

  jobject(json_object *obj) { obj_ = obj; }

  jobject(int32_t v) : jobject(json_object_new_int(v)) {}

  jobject(int64_t v) : jobject(json_object_new_int64(v)) {}

  jobject(double v) : jobject(json_object_new_double(v)) {}

  jobject(const char *v) : jobject(json_object_new_string(v)) {}

  jobject(const std::string &v) : jobject(json_object_new_string(v.c_str())) {}

  jobject(const std::string &k, jobject o) : jobject() {

    json_object_object_add(obj_, k.c_str(), o.obj_);

  }

  jobject(std::initializer_list<jobject> arr) {

    obj_ = json_object_new_array();

    for (auto &o : arr) {

      json_object_array_add(obj_, o.obj_);

    }

  }

  jobject(const jobject &other) {

    if (&other != this) {

      obj_ = other.obj_;

    }

  }

  jobject &operator=(const jobject &other) {

    if (&other != this) {

      obj_ = other.obj_;

    }

    return *this;

  }

  virtual ~jobject() {}

  void put() { json_object_put(obj_); }

  void get() { json_object_get(obj_); }

  virtual jobject &operator()(const std::string &key, jobject j) {

    json_object_object_add(obj_, key.c_str(), j.obj_);

    return *this;

  }

  virtual const char *c_str() { return json_object_to_json_string(obj_); }

 protected:

  json_object *obj_;

};

}  // end of namespace testing

}  // end of namespace opae