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module;
#include <boost/beast/core.hpp>
#include <boost/beast/http.hpp>
#include <boost/json.hpp>
export module routemon:rwgps;
import std;
import :http.client;
import :log;
namespace beast = boost::beast;
namespace bhttp = beast::http;
namespace net = boost::asio;
namespace json = boost::json;
namespace routemon::rwgps {
export struct route_summary {
std::int64_t id;
std::int64_t user_id;
std::string url;
std::string name;
std::string description;
};
struct pagination {
std::size_t record_count;
std::size_t page_count;
std::size_t page_size;
std::optional<std::string> next_page_url;
};
struct get_routes_meta {
pagination pagination;
};
struct get_routes_response {
std::vector<route_summary> routes;
get_routes_meta meta;
};
auto tag_invoke(json::value_to_tag<route_summary> const&, json::value const& jv) -> route_summary {
return {
.id = json::value_to<std::int64_t>(jv.at("id")),
.user_id = json::value_to<std::int64_t>(jv.at("user_id")),
.url = json::value_to<std::string>(jv.at("url")),
.name = json::value_to<std::string>(jv.at("name")),
.description = json::value_to<std::string>(jv.at("description")),
};
}
auto tag_invoke(json::value_to_tag<pagination> const&, json::value const& jv) -> pagination {
return {
.record_count = json::value_to<std::size_t>(jv.at("record_count")),
.page_count = json::value_to<std::size_t>(jv.at("page_count")),
.page_size = json::value_to<std::size_t>(jv.at("page_size")),
.next_page_url = json::value_to<std::optional<std::string>>(jv.at("next_page_url")),
};
}
auto tag_invoke(json::value_to_tag<get_routes_meta> const&, json::value const& jv) -> get_routes_meta {
return {
.pagination = json::value_to<pagination>(jv.at("pagination")),
};
}
auto tag_invoke(json::value_to_tag<get_routes_response> const&, json::value const& jv) -> get_routes_response {
return {
.routes = json::value_to<std::vector<route_summary>>(jv.at("routes")),
.meta = json::value_to<get_routes_meta>(jv.at("meta")),
};
}
auto json_value_to_get_routes_response(json::value const& jv) -> get_routes_response {
return json::value_to<get_routes_response>(jv);
}
export class client {
log::logger l_;
http::client hc_;
std::string api_key_;
std::string auth_token_;
static constexpr std::string host = "ridewithgps.com";
// TODO: handle failure appropriately
auto get_routes_page(std::size_t page) -> get_routes_response {
auto req = bhttp::request<bhttp::string_body>{
bhttp::verb::get,
std::format("/api/v1/routes.json?page_size=200?page={}", page),
11, // HTTP 1.1
};
req.set(bhttp::field::host, host);
req.set("x-rwgps-api-key", api_key_);
req.set("x-rwgps-auth-token", auth_token_);
auto rsp = hc_.do_request(req);
auto p = json::stream_parser{};
for (auto const frag : rsp.body().cdata()) {
p.write(static_cast<char const*>(frag.data()), frag.size());
}
assert(p.done());
return json_value_to_get_routes_response(p.release());
}
public:
explicit client(net::io_context& ioc, log::logger const& l, std::string api_key, std::string auth_token)
: l_{l.sub("rwgps-client")}, hc_{ioc}, api_key_{std::move(api_key)}, auth_token_{std::move(auth_token)}
{}
auto get_all_routes() -> std::vector<route_summary> {
// TODO: make sure that there are no duplicates here.
// What does RWGPS sort on, by default?
// Consider using an associative container instead of a vector.
auto record_count = 0uz;
auto current_page = 0uz;
auto routes = std::vector<route_summary>{};
while (true) {
auto rsp = get_routes_page(current_page);
if (rsp.meta.pagination.next_page_url)
l_.debug("Next page URL: {}", *rsp.meta.pagination.next_page_url);
routes.append_range(rsp.routes);
if (rsp.meta.pagination.record_count > 0)
record_count = rsp.meta.pagination.record_count;
if (rsp.routes.empty() || routes.size() >= record_count) {
break;
}
}
return routes;
}
};
} // namespace routemon::rwgps
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