#include "common/printing.h"
#include "common/jsonconfig.h"
#include "common/size.h"
#include "common/stringUtils.h"
#include "detection/cpucache/cpucache.h"
#include "modules/cpucache/cpucache.h"

#define FF_CPUCACHE_DISPLAY_NAME "CPU Cache"

static void printCPUCacheNormal(const FFCPUCacheResult* result, FFCPUCacheOptions* options) {
    FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
    FF_STRBUF_AUTO_DESTROY key = ffStrbufCreate();

    char levelStr[4] = "L";
    for (uint32_t i = 0; i < ARRAY_SIZE(result->caches) && result->caches[i].length > 0; i++) {
        ffStrbufClear(&key);
        levelStr[1] = (char) ('1' + i);
        if (options->moduleArgs.key.length == 0) {
            ffStrbufAppendF(&key, "%s (%s)", FF_CPUCACHE_DISPLAY_NAME, levelStr);
        } else {
            uint32_t index = i + 1;
            FF_PARSE_FORMAT_STRING_CHECKED(&key, &options->moduleArgs.key, ((FFformatarg[]) {
                                                                               FF_ARG(index, "index"),
                                                                               FF_ARG(levelStr, "level"),
                                                                               FF_ARG(options->moduleArgs.keyIcon, "icon"),
                                                                           }));
        }

        ffStrbufClear(&buffer);

        uint32_t sum = 0;
        FF_LIST_FOR_EACH (FFCPUCache, src, result->caches[i]) {
            char typeStr = '?';
            switch (src->type) {
                case FF_CPU_CACHE_TYPE_DATA:
                    typeStr = 'D';
                    break;
                case FF_CPU_CACHE_TYPE_INSTRUCTION:
                    typeStr = 'I';
                    break;
                case FF_CPU_CACHE_TYPE_UNIFIED:
                    typeStr = 'U';
                    break;
                case FF_CPU_CACHE_TYPE_TRACE:
                    typeStr = 'T';
                    break;
            }
            if (buffer.length) {
                ffStrbufAppendS(&buffer, ", ");
            }
            if (src->num > 1) {
                ffStrbufAppendF(&buffer, "%ux", src->num);
            }
            ffSizeAppendNum(src->size, &buffer);
            ffStrbufAppendF(&buffer, " (%c)", typeStr);

            sum += src->size * src->num;
        }

        if (options->moduleArgs.outputFormat.length == 0) {
            ffPrintLogoAndKey(key.chars, 0, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY);
            ffStrbufPutTo(&buffer, stdout);
        } else {
            FF_STRBUF_AUTO_DESTROY buffer2 = ffStrbufCreate();
            ffSizeAppendNum(sum, &buffer2);
            FF_PRINT_FORMAT_CHECKED(key.chars, 0, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY, ((FFformatarg[]) {
                                                                                                         FF_ARG(buffer, "result"),
                                                                                                         FF_ARG(buffer2, "sum"),
                                                                                                     }));
        }
    }
}

static void printCPUCacheCompact(const FFCPUCacheResult* result, FFCPUCacheOptions* options) {
    FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
    uint64_t sum = 0;
    for (uint32_t i = 0; i < ARRAY_SIZE(result->caches) && result->caches[i].length > 0; i++) {
        if (buffer.length) {
            ffStrbufAppendS(&buffer, ", ");
        }
        uint32_t value = 0;
        FF_LIST_FOR_EACH (FFCPUCache, src, result->caches[i]) {
            value += src->size * src->num;
        }
        ffSizeAppendNum(value, &buffer);
        ffStrbufAppendF(&buffer, " (L%u)", i + 1);
        sum += value;
    }

    if (options->moduleArgs.outputFormat.length == 0) {
        ffPrintLogoAndKey(FF_CPUCACHE_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
        ffStrbufPutTo(&buffer, stdout);
    } else {
        FF_STRBUF_AUTO_DESTROY buffer2 = ffStrbufCreate();
        ffSizeAppendNum(sum, &buffer2);
        FF_PRINT_FORMAT_CHECKED(FF_CPUCACHE_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, ((FFformatarg[]) {
                                                                                                              FF_ARG(buffer, "result"),
                                                                                                              FF_ARG(buffer2, "sum"),
                                                                                                          }));
    }
}

bool ffPrintCPUCache(FFCPUCacheOptions* options) {
    bool success = false;
    FFCPUCacheResult result = {
        .caches = {
            ffListCreate(),
            ffListCreate(),
            ffListCreate(),
            ffListCreate(),
        },
    };

    const char* error = ffDetectCPUCache(&result);

    if (error) {
        ffPrintError(FF_CPUCACHE_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "%s", error);
        goto exit;
    }

    if (!options->compact) {
        printCPUCacheNormal(&result, options);
    } else {
        printCPUCacheCompact(&result, options);
    }
    success = true;

exit:
    ffListDestroy(&result.caches[0]);
    ffListDestroy(&result.caches[1]);
    ffListDestroy(&result.caches[2]);
    ffListDestroy(&result.caches[3]);

    return success;
}

void ffParseCPUCacheJsonObject(FFCPUCacheOptions* 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;
        }

        if (unsafe_yyjson_equals_str(key, "compact")) {
            options->compact = yyjson_get_bool(val);
            continue;
        }

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

void ffGenerateCPUCacheJsonConfig(FFCPUCacheOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
    ffJsonConfigGenerateModuleArgsConfig(doc, module, &options->moduleArgs);

    yyjson_mut_obj_add_bool(doc, module, "compact", options->compact);
}

bool ffGenerateCPUCacheJsonResult(FF_A_UNUSED FFCPUCacheOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
    bool success = false;
    FFCPUCacheResult result = {
        .caches = {
            ffListCreate(),
            ffListCreate(),
            ffListCreate(),
            ffListCreate(),
        },
    };

    const char* error = ffDetectCPUCache(&result);

    if (error) {
        yyjson_mut_obj_add_str(doc, module, "error", error);
        goto exit;
    }

    yyjson_mut_val* caches = yyjson_mut_obj_add_obj(doc, module, "result");

    for (uint32_t i = 0; i < ARRAY_SIZE(result.caches) && result.caches[i].length > 0; i++) {
        yyjson_mut_val* level = yyjson_mut_obj_add_arr(doc, caches, &"l1\0l2\0l3\0l4\0"[i * 3]);
        FF_LIST_FOR_EACH (FFCPUCache, src, result.caches[i]) {
            yyjson_mut_val* item = yyjson_mut_arr_add_obj(doc, level);
            yyjson_mut_obj_add_uint(doc, item, "size", src->size);
            yyjson_mut_obj_add_uint(doc, item, "num", src->num);
            const char* typeStr = "unknown";
            switch (src->type) {
                case FF_CPU_CACHE_TYPE_DATA:
                    typeStr = "data";
                    break;
                case FF_CPU_CACHE_TYPE_INSTRUCTION:
                    typeStr = "instruction";
                    break;
                case FF_CPU_CACHE_TYPE_UNIFIED:
                    typeStr = "unified";
                    break;
                case FF_CPU_CACHE_TYPE_TRACE:
                    typeStr = "trace";
                    break;
            }
            yyjson_mut_obj_add_uint(doc, item, "lineSize", src->lineSize);
            yyjson_mut_obj_add_str(doc, item, "type", typeStr);
        }
    }
    success = true;

exit:
    ffListDestroy(&result.caches[0]);
    ffListDestroy(&result.caches[1]);
    ffListDestroy(&result.caches[2]);
    ffListDestroy(&result.caches[3]);
    return success;
}

void ffInitCPUCacheOptions(FFCPUCacheOptions* options) {
    ffOptionInitModuleArg(&options->moduleArgs, "");

    options->compact = false;
}

void ffDestroyCPUCacheOptions(FFCPUCacheOptions* options) {
    ffOptionDestroyModuleArg(&options->moduleArgs);
}

FFModuleBaseInfo ffCPUCacheModuleInfo = {
    .name = FF_CPUCACHE_MODULE_NAME,
    .description = "Print CPU cache sizes",
    .initOptions = (void*) ffInitCPUCacheOptions,
    .destroyOptions = (void*) ffDestroyCPUCacheOptions,
    .parseJsonObject = (void*) ffParseCPUCacheJsonObject,
    .printModule = (void*) ffPrintCPUCache,
    .generateJsonResult = (void*) ffGenerateCPUCacheJsonResult,
    .generateJsonConfig = (void*) ffGenerateCPUCacheJsonConfig,
    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
        { "Separate result", "result" },
        { "Sum result", "sum" },
    }))
};
