#include "cgit.hpp"

#include <unistd.h>
#include <memory.h>
#include <iostream>
#include <sstream>

#define DEFAULT_GIT_FILE "/usr/bin/git"
#define DEFAULT_GITHUB_URL "https://github.com/"
#define DEFAULT_MIRROR_URL "https://github.com.cnpmjs.org/"

namespace cgit {
 using namespace std;

 static string create_cmd(std::vector<string> &args) {
 std::ostringstream ss;
 for (const auto &s:args) {
 ss << "\"" << s << "\" ";
 }
 return ss.str();
 }

 const char *get_git_file() {
 char *file = getenv("GIT");
 return file ? file : DEFAULT_GIT_FILE;
 }

 int cgit_clone(vector<string> &args) {
 // 1.git clone https://github.com.cnpmjs.org/killf/cgit.git
 string old_url, new_url, folder_name;
 for (size_t i = 2; i < args.size(); i++) {
 if (args[i].startsWith(DEFAULT_GITHUB_URL)) {
 old_url = args[i];
 new_url = args[i].replace(0, strlen(DEFAULT_GITHUB_URL), DEFAULT_MIRROR_URL);

 auto index = old_url.find_last_of('/');
 if (index != std::string::npos) {
 folder_name = old_url.substr(index + 1);
 if (folder_name.endswith(".git")) {
 folder_name = folder_name.substr(0, folder_name.size() - 4);
 }
 }
 }
 }
 args[0] = get_git_file();

 auto cmd1 = create_cmd(args);
 auto err = system(cmd1.c_str());
 if (err != 0 || new_url.empty() || folder_name.empty())return err;

 // 2.cd cgit
 err = chdir(folder_name.c_str());
 if (err != 0)return err;

 // 3.git remote set-url origin https://github.com/killf/cgit.git
 auto cmd3 = "git remote set-url origin \"" + old_url + "\"";
 return system(cmd3.c_str());
 }

 int cgit_pull(vector<string> &args) {
 return 0;
 }
}