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

#define VERIFY(cond, msg) do { if (!(cond)) { qCritical("FAIL: %s", msg); abort(); } } while(0)

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

    VERIFY(config_update_option(path, "global", "my_name", "testnode"), "new file write");

    QFile f(path);
    VERIFY(f.open(QIODevice::ReadOnly | QIODevice::Text), "new file open for read");
    QString content = f.readAll();
    f.close();
    VERIFY(content.contains("[global]"), "new file has [global]");
    VERIFY(content.contains("my_name=testnode"), "new file has my_name");
    QFile::remove(path);
}

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

    VERIFY(config_update_option(path, "global", "my_name", "newname"), "replace: update");

    QFile f(path);
    VERIFY(f.open(QIODevice::ReadOnly | QIODevice::Text), "replace: open for read");
    QString content = f.readAll();
    f.close();
    VERIFY(!content.contains("my_name=oldname"), "replace: old value gone");
    VERIFY(content.contains("my_name=newname"), "replace: new value present");
    VERIFY(content.contains("my_id=abc"), "replace: my_id preserved");
    VERIFY(content.contains("[control]"), "replace: [control] preserved");
    VERIFY(content.contains("addr=1.2.3.4"), "replace: addr preserved");
    QFile::remove(path);
}

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

    VERIFY(config_update_option(path, "global", "new_param", "newval"), "newparam: insert");

    QFile f(path);
    VERIFY(f.open(QIODevice::ReadOnly | QIODevice::Text), "newparam: open for read");
    QString content = f.readAll();
    f.close();
    VERIFY(content.contains("my_name=test"), "newparam: my_name preserved");
    VERIFY(content.contains("new_param=newval"), "newparam: new_param inserted");
    VERIFY(content.contains("[control]"), "newparam: [control] preserved");
    QFile::remove(path);
}

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

    VERIFY(config_update_option(path, "client:peer1", "link", "srv:addr3:port3", CONFIG_UPDATE_APPEND), "append: add link");

    QFile f(path);
    VERIFY(f.open(QIODevice::ReadOnly | QIODevice::Text), "append: open for read");
    QString content = f.readAll();
    f.close();
    VERIFY(content.contains("link=srv:addr1:port1"), "append: link1 preserved");
    VERIFY(content.contains("link=srv:addr2:port2"), "append: link2 preserved");
    VERIFY(content.contains("link=srv:addr3:port3"), "append: link3 added");
    QFile::remove(path);
}

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

    VERIFY(config_update_option(path, "gui", "theme", "dark"), "newsect: add [gui]");

    QFile f(path);
    VERIFY(f.open(QIODevice::ReadOnly | QIODevice::Text), "newsect: open for read");
    QString content = f.readAll();
    f.close();
    VERIFY(content.contains("[global]"), "newsect: [global] preserved");
    VERIFY(content.contains("name=x"), "newsect: name preserved");
    VERIFY(content.contains("[gui]"), "newsect: [gui] added");
    VERIFY(content.contains("theme=dark"), "newsect: theme added");
    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;
}