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#include "common/printing.h"
#include "common/jsonconfig.h"
#include "common/size.h"
#include "common/strutil.h"
#include "modules/kernel/kernel.h"

bool ffPrintKernel(FFKernelOptions* options) {
    const FFPlatformSysinfo* info = &instance.state.platform.sysinfo;
    if (options->moduleArgs.outputFormat.length == 0) {
        ffPrintLogoAndKey(FF_KERNEL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
        printf("%s %s\n", info->name.chars, info->release.chars);
    } else {
        FF_STRBUF_AUTO_DESTROY str = ffStrbufCreate();
        ffSizeAppendNum(info->pageSize, &str);
        FF_PRINT_FORMAT_CHECKED(FF_KERNEL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, ((FFformatarg[]) {
                                                                                                           FF_ARG(info->name, "sysname"),
                                                                                                           FF_ARG(info->release, "release"),
                                                                                                           FF_ARG(info->version, "version"),
                                                                                                           FF_ARG(info->architecture, "arch"),
                                                                                                           FF_ARG(str, "page-size"),
                                                                                                       }));
    }

    return true;
}

void ffParseKernelJsonObject(FFKernelOptions* options, yyjson_val* module) {
    yyjson_val *key, *val;
    size_t idx, max;
    yyjson_obj_foreach (module, idx, max, key, val) {
        if (ffJsonConfigParseModuleArgs(key, val, &options->moduleArgs)) {
            continue;
        }

        ffPrintError(FF_KERNEL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Unknown JSON key %s", unsafe_yyjson_get_str(key));
    }
}

void ffGenerateKernelJsonConfig(FFKernelOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
    ffJsonConfigGenerateModuleArgsConfig(doc, module, &options->moduleArgs);
}

bool ffGenerateKernelJsonResult(FF_A_UNUSED FFKernelOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
    const FFPlatformSysinfo* info = &instance.state.platform.sysinfo;

    yyjson_mut_val* obj = yyjson_mut_obj_add_obj(doc, module, "result");
    yyjson_mut_obj_add_strbuf(doc, obj, "architecture", &info->architecture);
    yyjson_mut_obj_add_strbuf(doc, obj, "name", &info->name);
    yyjson_mut_obj_add_strbuf(doc, obj, "release", &info->release);
    yyjson_mut_obj_add_strbuf(doc, obj, "version", &info->version);
    yyjson_mut_obj_add_uint(doc, obj, "pageSize", info->pageSize);

    return true;
}

void ffInitKernelOptions(FFKernelOptions* options) {
    ffOptionInitModuleArg(&options->moduleArgs, "");
}

void ffDestroyKernelOptions(FFKernelOptions* options) {
    ffOptionDestroyModuleArg(&options->moduleArgs);
}

FFModuleBaseInfo ffKernelModuleInfo = {
    .name = FF_KERNEL_MODULE_NAME,
    .description = "Print system kernel version",
    .initOptions = (void*) ffInitKernelOptions,
    .destroyOptions = (void*) ffDestroyKernelOptions,
    .parseJsonObject = (void*) ffParseKernelJsonObject,
    .printModule = (void*) ffPrintKernel,
    .generateJsonResult = (void*) ffGenerateKernelJsonResult,
    .generateJsonConfig = (void*) ffGenerateKernelJsonConfig,
    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
        { "Sysname", "sysname" },
        { "Release", "release" },
        { "Version", "version" },
        { "Architecture", "arch" },
        { "Display version", "display-version" },
        { "Page size", "page-size" },
    }))
};