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#include <erebos/identity.h>
#include <erebos/network.h>
#include <erebos/storage.h>
#include <filesystem>
#include <functional>
#include <iostream>
#include <memory>
#include <optional>
#include <sstream>
#include <string>
#include <vector>
using std::cerr;
using std::cout;
using std::endl;
using std::function;
using std::optional;
using std::ostringstream;
using std::string;
using std::unique_ptr;
using std::vector;
namespace fs = std::filesystem;
using namespace erebos;
namespace {
fs::path getErebosDir()
{
const char * value = getenv("EREBOS_DIR");
if (value)
return value;
return "./.erebos";
}
Storage st(getErebosDir());
optional<Head<LocalState>> h;
optional<Server> server;
struct Command
{
string name;
function<void(const vector<string> &)> action;
};
void createIdentity(const vector<string> & args)
{
optional<Identity> identity;
for (const auto & name : args) {
auto builder = Identity::create(st);
builder.name(name);
if (identity)
builder.owner(*identity);
identity = builder.commit();
}
if (identity) {
auto nh = h->update([&identity] (const auto & loc) {
return st.store(loc->identity(*identity));
});
if (nh)
*h = *nh;
}
}
void startServer(const vector<string> &)
{
vector<unique_ptr<Service>> services;
server.emplace(*h, move(services));
server->peerList().onUpdate([](size_t idx, const Peer * peer) {
ostringstream ss;
ss << "peer " << idx;
if (peer) {
ss << " " << peer->name();
if (peer->identity() && peer->identity()->name())
ss << " " << *peer->identity()->name();
} else {
ss << " deleted";
}
cout << ss.str() << endl;
});
}
void stopServer(const vector<string> &)
{
server.reset();
}
vector<Command> commands = {
{ "create-identity", createIdentity },
{ "start-server", startServer },
{ "stop-server", stopServer },
};
}
int main(int argc, char * argv[])
{
h.emplace([] {
auto hs = st.heads<LocalState>();
if (!hs.empty())
return hs[0];
else
return st.storeHead(LocalState());
}());
char * line = nullptr;
size_t size = 0;
if (argc > 1) {
vector<string> args;
for (int i = 2; i < argc; i++)
args.emplace_back(argv[i]);
for (const auto & cmd : commands) {
if (cmd.name == argv[1]) {
cmd.action(args);
return 0;
}
}
cerr << "Unknown command: '" << argv[1] << "'" << endl;
return 1;
}
while (getline(&line, &size, stdin) > 0) {
optional<string> command;
vector<string> args;
const char * last = line;
for (const char * cur = line;; cur++) {
if (isspace(*cur) || *cur == '\0') {
if (last < cur) {
if (!command)
command.emplace(last, cur);
else
args.emplace_back(last, cur);
}
last = cur + 1;
if (*cur == '\0')
break;
}
}
if (!command)
continue;
bool found = false;
for (const auto & cmd : commands) {
if (cmd.name == *command) {
found = true;
cmd.action(args);
break;
}
}
if (!found)
cerr << "Unknown command: '" << *command << "'" << endl;
}
free(line);
server.reset();
return 0;
}
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