#include "http_client.h"
#include <cstdio>
#include <string>

namespace pex_http {

// Stub: usa curl via popen igual que llm_anthropic. Reemplazar por
// fn_http::request cuando el helper del registry exista (issue 0110).
Response request(const Request& req) {
    Response resp;
    if (req.url.empty()) {
        resp.error = "empty url";
        return resp;
    }

    std::string cmd = "curl -sS --max-time " + std::to_string(req.timeout_ms / 1000)
                    + " -X " + (req.method.empty() ? "GET" : req.method);
    if (!req.bearer_token.empty()) {
        cmd += " -H \"Authorization: Bearer " + req.bearer_token + "\"";
    }
    for (const auto& kv : req.headers) {
        cmd += " -H \"" + kv.first + ": " + kv.second + "\"";
    }
    if (!req.body.empty()) {
        cmd += " --data-binary @-";
    }
    cmd += " -w \"\\n__STATUS__%{http_code}\" \"" + req.url + "\"";

    FILE* fp = popen(cmd.c_str(), "r");
    if (!fp) { resp.error = "popen failed"; return resp; }

    char buf[4096];
    while (fgets(buf, sizeof(buf), fp)) resp.body += buf;
    pclose(fp);

    auto pos = resp.body.rfind("\n__STATUS__");
    if (pos != std::string::npos) {
        try { resp.status = std::stoi(resp.body.substr(pos + 11)); } catch (...) {}
        resp.body.resize(pos);
    }
    return resp;
}

} // namespace pex_http