#include "archive_parser.h"

#include <QFile>
#include <QJsonParseError>
#include <QDebug>

Archive::Archive(QString outbox_filename, ArchiveType archive_type) :
    outbox_filename(outbox_filename), archive_type(archive_type) {}

Archive::InitError Archive::init() {
    QFile outbox_file(outbox_filename);

    if (!outbox_file.open(QIODevice::ReadOnly | QIODevice::Text))
        return FailedOpeningFile;

    QJsonParseError json_error;
    QJsonDocument outbox_json_document = QJsonDocument::fromJson(outbox_file.readAll(), &json_error);
    outbox_file.close();

    if (json_error.error != QJsonParseError::NoError)
        return JsonParseError;
    if (outbox_json_document.isEmpty())
        return JsonEmpty;
    if (outbox_json_document.isNull())
        return JsonNull;

    if (outbox_json_document.isObject())
        outbox_json = new QJsonObject (outbox_json_document.object());
    else
        return JsonNotObject;

    // Do some more throughful checks to make sure that the JSON is actually valid.
    if (not (outbox_json->contains("@context") and outbox_json->value("@context").isString() and
        (outbox_json->value("@context").toString() == "https://www.w3.org/ns/activitystreams")))
        return JsonNotActivityStream;
    if (outbox_json->contains("orderedItems") and outbox_json->value("orderedItems").isArray()) {
        outbox_items = new QJsonArray(outbox_json->value("orderedItems").toArray()); // we'll need it during Archive's lifetime
    }

    return NoError;
}

Archive::~Archive() {
    delete outbox_json; outbox_json = nullptr;
    delete outbox_items; outbox_items = nullptr;
}