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/*
 * Created by yuuta on 4/1/22.
 */

#include "log.h"
#include "logic.h"
#include "botd.h"
#include "tdutils.h"

#include <stdio.h>
#include <stdbool.h>

struct refresh_session {
    bool running;
    long long chat_id;
    long long message_id;
    long long offset_message_id;
    unsigned int progress;
};

static struct refresh_session current_session = {
        false,
        0,
        0,
        0
};

static void refresh_get(void);

static void send_msg(long long chat_id, long long message_id, char *text) {
    td_send(TdCreateObjectSendMessage(chat_id,
                                      0,
                                      message_id,
                                      TdCreateObjectMessageSendOptions(false,
                                                                       false,
                                                                       true,
                                                                       NULL),
                                      NULL,
                                      (struct TdInputMessageContent *)
                                              TdCreateObjectInputMessageText(
                                                      TdCreateObjectFormattedText(text,
                                                                                  (struct TdVectorTextEntity *)
                                                                                          TdCreateObjectVectorObject(
                                                                                                  0, NULL)
                                                      ),
                                                      false,
                                                      false)),
            NULL,
            NULL);
}

static void send_administrative_msg(char *text) {
    send_msg(current_session.chat_id, current_session.message_id, text);
}

static void cb_refresh_mlink(bool successful, struct TdObject *result, struct TdError *error, void *cb_arg) {
    if (!successful) {
        char msg[512];
        snprintf(msg, 512, "Cannot get message link info: %d (%s)",
                 error ? error->code_ : -1,
                 error ? error->message_ : "NULL");
        send_administrative_msg(msg);
        current_session.running = false;
        return;
    }
    struct TdMessageLinkInfo *info = (struct TdMessageLinkInfo *) result;
    if (!info->message_) {
        refresh_get();
        return;
    }
    LOGDV("%lld", info->message_->id_);
    store(info->message_);
    refresh_get();
}

static void cb_refresh_link(bool successful, struct TdObject *result, struct TdError *error, void *cb_arg) {
    if (!successful) {
        char msg[512];
        snprintf(msg, 512, "Cannot get link: %d (%s)",
                 error ? error->code_ : -1,
                 error ? error->message_ : "NULL");
        send_administrative_msg(msg);
        current_session.running = false;
        return;
    }
    struct TdInternalLinkType *type = (struct TdInternalLinkType *) result;
    if (type->ID != CODE_InternalLinkTypeMessage) {
        refresh_get();
        return;
    }
    struct TdInternalLinkTypeMessage *m = (struct TdInternalLinkTypeMessage *) type;
    td_send(TdCreateObjectGetMessageLinkInfo(m->url_), &cb_refresh_mlink, NULL);
}

static void refresh_get(void) {
    if (current_session.progress > 815) {
        send_administrative_msg("Done.");
        current_session.running = false;
        return;
    }
    char url[64];
    sprintf(url, "https://t.me/ksyxsays/%u", current_session.progress ++);
    LOGDV("Get %s", url);
    td_send(TdCreateObjectGetInternalLinkType(url),
            &cb_refresh_link,
            NULL);
}

void refresh(struct TdMessage *msg) {
    if (current_session.running) {
        send_msg(msg->chat_id_, msg->id_, "A refresh is already in progress.");
        return;
    }
    current_session.running = true;
    current_session.message_id = msg->id_;
    current_session.chat_id = msg->chat_id_;
    current_session.offset_message_id = 0;
    current_session.progress = 1;
    send_administrative_msg("Refreshing ...");
    refresh_get();
}