/*
* Copyright (c) 2025 Aldrik Ramaekers <aldrik.ramaekers@gmail.com>
* 
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
* 
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#define CPPHTTPLIB_OPENSSL_SUPPORT
#include <cpp-httplib/httplib.h>

#include "memops.hpp"
#include "strops.hpp"
#include "logger.hpp"
#include "exporter.hpp"

bool _MailerSend_send_email(const char* sender, const char* recipient, const char* subject, const char* text)
{
    #if SIMULATE_EMAIL
    usleep(1000 * 1000);
    return E_ERR_SUCCESS;
    #endif
    
    const char *api_key = administration::get_email_service().api_key;
    httplib::SSLClient cli("api.mailersend.com", 443);
    cli.enable_server_certificate_verification(false);
    cli.set_connection_timeout(15, 0);

    size_t body_size = 10000;
    char* body = (char*)memops::alloc(body_size);

    const char* json = "{\n"
                       "  \"from\": {\n"
                       "    \"email\": \"%s\",\n"
                       "    \"name\": \"%s\"\n"
                       "  },\n"
                       "  \"to\": [\n"
                       "    {\n"
                       "      \"email\": \"%s\",\n"
                       "      \"name\": \"%s\"\n"
                       "    }\n"
                       "  ],\n"
                       "  \"subject\": \"%s\",\n"
                       "  \"text\": \"%s.\"\n"
                       "}";

    strops::format(body, body_size, json, sender, sender, recipient, recipient, subject, text);

    httplib::Headers headers;
    headers.insert(std::make_pair("Authorization", std::string("Bearer ") + api_key));
    headers.insert(std::make_pair("Content-Type", "application/json"));

    httplib::Result res = cli.Post("/v1/email", headers, body, "application/json");
    memops::unalloc(body);
    
    if (!res || (res->status != 200 && res->status != 202)) {
        logger::error("Failed to send email.");
        return E_ERR_FAILED_REQUEST;
    }

    logger::info("Email sent.");
    return E_ERR_SUCCESS;
}

exporter::email_provider_impl _mailersend_api_provider = {
    "MailerSend",
    "img/logos/mailsender",
    _MailerSend_send_email,
};