// tests/test_config_updater.cpp — Verify universal config updater
#include "../transport/config_updater.h"
#include <QFile>
#include <QString>
#include <QIODevice>

static void test_new_file() {
    const char* path = "/tmp/test_cfg_new.ini";
    QFile::remove(path);

    bool ok = config_update_option(path, "global", "my_name", "testnode");
    Q_ASSERT(ok);

    QFile f(path);
    Q_ASSERT(f.open(QIODevice::ReadOnly | QIODevice::Text));
    QString content = f.readAll();
    f.close();
    Q_ASSERT(content.contains("[global]"));
    Q_ASSERT(content.contains("my_name=testnode"));
    QFile::remove(path);
}

static void test_replace_existing() {
    const char* path = "/tmp/test_cfg_replace.ini";
    QFile f(path);
    Q_ASSERT(f.open(QIODevice::WriteOnly | QIODevice::Text));
    f.write("[global]\nmy_name=oldname\nmy_id=abc\n\n[control]\naddr=1.2.3.4\n");
    f.close();

    bool ok = config_update_option(path, "global", "my_name", "newname");
    Q_ASSERT(ok);

    Q_ASSERT(f.open(QIODevice::ReadOnly | QIODevice::Text));
    QString content = f.readAll();
    f.close();
    Q_ASSERT(!content.contains("my_name=oldname"));
    Q_ASSERT(content.contains("my_name=newname"));
    Q_ASSERT(content.contains("my_id=abc"));
    Q_ASSERT(content.contains("[control]"));
    Q_ASSERT(content.contains("addr=1.2.3.4"));
    QFile::remove(path);
}

static void test_replace_new_param_in_section() {
    const char* path = "/tmp/test_cfg_newparam.ini";
    QFile f(path);
    Q_ASSERT(f.open(QIODevice::WriteOnly | QIODevice::Text));
    f.write("[global]\nmy_name=test\n\n[control]\naddr=1.2.3.4\n");
    f.close();

    bool ok = config_update_option(path, "global", "new_param", "newval");
    Q_ASSERT(ok);

    Q_ASSERT(f.open(QIODevice::ReadOnly | QIODevice::Text));
    QString content = f.readAll();
    f.close();
    Q_ASSERT(content.contains("my_name=test"));
    Q_ASSERT(content.contains("new_param=newval"));
    Q_ASSERT(content.contains("[control]"));
    QFile::remove(path);
}

static void test_append_mode() {
    const char* path = "/tmp/test_cfg_append.ini";
    QFile f(path);
    Q_ASSERT(f.open(QIODevice::WriteOnly | QIODevice::Text));
    f.write("[client:peer1]\nlink=srv:addr1:port1\nlink=srv:addr2:port2\n\n[global]\nname=x\n");
    f.close();

    bool ok = config_update_option(path, "client:peer1", "link", "srv:addr3:port3", CONFIG_UPDATE_APPEND);
    Q_ASSERT(ok);

    Q_ASSERT(f.open(QIODevice::ReadOnly | QIODevice::Text));
    QString content = f.readAll();
    f.close();
    Q_ASSERT(content.contains("link=srv:addr1:port1"));
    Q_ASSERT(content.contains("link=srv:addr2:port2"));
    Q_ASSERT(content.contains("link=srv:addr3:port3"));
    QFile::remove(path);
}

static void test_new_section() {
    const char* path = "/tmp/test_cfg_newsect.ini";
    QFile f(path);
    Q_ASSERT(f.open(QIODevice::WriteOnly | QIODevice::Text));
    f.write("[global]\nname=x\n");
    f.close();

    bool ok = config_update_option(path, "gui", "theme", "dark");
    Q_ASSERT(ok);

    Q_ASSERT(f.open(QIODevice::ReadOnly | QIODevice::Text));
    QString content = f.readAll();
    f.close();
    Q_ASSERT(content.contains("[global]"));
    Q_ASSERT(content.contains("name=x"));
    Q_ASSERT(content.contains("[gui]"));
    Q_ASSERT(content.contains("theme=dark"));
    QFile::remove(path);
}

int main() {
    test_new_file();
    test_replace_existing();
    test_replace_new_param_in_section();
    test_append_mode();
    test_new_section();
    return 0;
}