#include "common/percent.h"
#include "common/printing.h"
#include "common/jsonconfig.h"
#include "common/temps.h"
#include "common/size.h"
#include "common/frequency.h"
#include "common/stringUtils.h"
#include "detection/host/host.h"
#include "detection/gpu/gpu.h"
#include "modules/gpu/gpu.h"

#include <stdlib.h>

static void printGPUResult(FFGPUOptions* options, uint8_t index, const FFGPUResult* gpu) {
    const char* type;
    switch (gpu->type) {
        case FF_GPU_TYPE_INTEGRATED:
            type = "Integrated";
            break;
        case FF_GPU_TYPE_DISCRETE:
            type = "Discrete";
            break;
        default:
            type = "Unknown";
            break;
    }

    FFPercentageTypeFlags percentType = options->percent.type == 0 ? instance.config.display.percentType : options->percent.type;

    if (options->moduleArgs.outputFormat.length == 0) {
        ffPrintLogoAndKey(FF_GPU_MODULE_NAME, index, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);

        FF_STRBUF_AUTO_DESTROY output = ffStrbufCreate();

        if (gpu->vendor.length > 0 && !ffStrbufStartsWithIgnCase(&gpu->name, &gpu->vendor)) {
            ffStrbufAppend(&output, &gpu->vendor);
            ffStrbufAppendC(&output, ' ');
        }

        ffStrbufAppend(&output, &gpu->name);

        if (gpu->coreCount != FF_GPU_CORE_COUNT_UNSET) {
            ffStrbufAppendF(&output, " (%d)", gpu->coreCount);
        }

        if (gpu->frequency > 0) {
            ffStrbufAppendS(&output, " @ ");
            ffFreqAppendNum(gpu->frequency, &output);
        }

        if (gpu->temperature != FF_GPU_TEMP_UNSET) {
            ffStrbufAppendS(&output, " - ");
            ffTempsAppendNum(gpu->temperature, &output, options->tempConfig, &options->moduleArgs);
        }

        if (gpu->dedicated.total != FF_GPU_VMEM_SIZE_UNSET && gpu->dedicated.total != 0) {
            ffStrbufAppendS(&output, " (");

            if (!(percentType & FF_PERCENTAGE_TYPE_HIDE_OTHERS_BIT)) {
                if (gpu->dedicated.used != FF_GPU_VMEM_SIZE_UNSET) {
                    ffSizeAppendNum(gpu->dedicated.used, &output);
                    ffStrbufAppendS(&output, " / ");
                }
                ffSizeAppendNum(gpu->dedicated.total, &output);
            }
            if (gpu->dedicated.used != FF_GPU_VMEM_SIZE_UNSET) {
                double percent = (double) gpu->dedicated.used / (double) gpu->dedicated.total * 100.0;
                if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
                    ffStrbufAppendS(&output, ", ");
                    ffPercentAppendNum(&output, percent, options->percent, false, &options->moduleArgs);
                }
                if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
                    ffStrbufAppendS(&output, " ");
                    ffPercentAppendBar(&output, percent, options->percent, &options->moduleArgs);
                }
            }
            ffStrbufAppendC(&output, ')');
        }

        if (gpu->type != FF_GPU_TYPE_UNKNOWN) {
            ffStrbufAppendF(&output, " [%s]", type);
        }

        ffStrbufPutTo(&output, stdout);
    } else {
        FF_STRBUF_AUTO_DESTROY tempStr = ffStrbufCreate();
        ffTempsAppendNum(gpu->temperature, &tempStr, options->tempConfig, &options->moduleArgs);
        FF_STRBUF_AUTO_DESTROY dTotal = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY dUsed = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY dPercentNum = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY dPercentBar = ffStrbufCreate();
        if (gpu->dedicated.total != FF_GPU_VMEM_SIZE_UNSET) {
            ffSizeAppendNum(gpu->dedicated.total, &dTotal);
        }
        if (gpu->dedicated.used != FF_GPU_VMEM_SIZE_UNSET) {
            ffSizeAppendNum(gpu->dedicated.used, &dUsed);
        }
        if (gpu->dedicated.total != FF_GPU_VMEM_SIZE_UNSET && gpu->dedicated.used != FF_GPU_VMEM_SIZE_UNSET) {
            double percent = (double) gpu->dedicated.used / (double) gpu->dedicated.total * 100.0;
            if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
                ffPercentAppendNum(&dPercentNum, percent, options->percent, false, &options->moduleArgs);
            }
            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
                ffPercentAppendBar(&dPercentBar, percent, options->percent, &options->moduleArgs);
            }
        }

        FF_STRBUF_AUTO_DESTROY sTotal = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY sUsed = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY sPercentNum = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY sPercentBar = ffStrbufCreate();
        if (gpu->shared.total != FF_GPU_VMEM_SIZE_UNSET) {
            ffSizeAppendNum(gpu->shared.total, &sTotal);
        }
        if (gpu->shared.used != FF_GPU_VMEM_SIZE_UNSET) {
            ffSizeAppendNum(gpu->shared.used, &sUsed);
        }
        if (gpu->shared.total != FF_GPU_VMEM_SIZE_UNSET && gpu->shared.used != FF_GPU_VMEM_SIZE_UNSET) {
            double percent = (double) gpu->shared.used / (double) gpu->shared.total * 100.0;
            if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
                ffPercentAppendNum(&sPercentNum, percent, options->percent, false, &options->moduleArgs);
            }
            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
                ffPercentAppendBar(&sPercentBar, percent, options->percent, &options->moduleArgs);
            }
        }

        FF_STRBUF_AUTO_DESTROY frequency = ffStrbufCreate();
        ffFreqAppendNum(gpu->frequency, &frequency);

        FF_STRBUF_AUTO_DESTROY coreUsageNum = ffStrbufCreate();
        FF_STRBUF_AUTO_DESTROY coreUsageBar = ffStrbufCreate();
        if (gpu->coreUsage != FF_GPU_CORE_USAGE_UNSET) {
            if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
                ffPercentAppendNum(&coreUsageNum, gpu->coreUsage, options->percent, false, &options->moduleArgs);
            }
            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
                ffPercentAppendBar(&coreUsageBar, gpu->coreUsage, options->percent, &options->moduleArgs);
            }
        }

        FF_PRINT_FORMAT_CHECKED(FF_GPU_MODULE_NAME, index, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, ((FFformatarg[]) {
                                                                                                            FF_ARG(gpu->vendor, "vendor"),
                                                                                                            FF_ARG(gpu->name, "name"),
                                                                                                            FF_ARG(gpu->driver, "driver"),
                                                                                                            FF_ARG(tempStr, "temperature"),
                                                                                                            FF_ARG(gpu->coreCount, "core-count"),
                                                                                                            FF_ARG(type, "type"),
                                                                                                            FF_ARG(dTotal, "dedicated-total"),
                                                                                                            FF_ARG(dUsed, "dedicated-used"),
                                                                                                            FF_ARG(sTotal, "shared-total"),
                                                                                                            FF_ARG(sUsed, "shared-used"),
                                                                                                            FF_ARG(gpu->platformApi, "platform-api"),
                                                                                                            FF_ARG(frequency, "frequency"),
                                                                                                            FF_ARG(index, "index"),
                                                                                                            FF_ARG(dPercentNum, "dedicated-percentage-num"),
                                                                                                            FF_ARG(dPercentBar, "dedicated-percentage-bar"),
                                                                                                            FF_ARG(sPercentNum, "shared-percentage-num"),
                                                                                                            FF_ARG(sPercentBar, "shared-percentage-bar"),
                                                                                                            FF_ARG(coreUsageNum, "core-usage-num"),
                                                                                                            FF_ARG(coreUsageBar, "core-usage-bar"),
                                                                                                            FF_ARG(gpu->memoryType, "memory-type"),
                                                                                                        }));
    }
}

bool ffPrintGPU(FFGPUOptions* options) {
    FF_LIST_AUTO_DESTROY gpus = ffListCreate();
    const char* error = ffDetectGPU(options, &gpus);
    if (error) {
        ffPrintError(FF_GPU_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "%s", error);
        return false;
    }

    FF_LIST_AUTO_DESTROY selectedGPUs = ffListCreateA(sizeof(const FFGPUResult*), gpus.length);

    FF_LIST_FOR_EACH (FFGPUResult, gpu, gpus) {
        if (gpu->type == FF_GPU_TYPE_UNKNOWN && options->hideType == FF_GPU_TYPE_UNKNOWN) {
            continue;
        }

        if (gpu->type == FF_GPU_TYPE_INTEGRATED && options->hideType == FF_GPU_TYPE_INTEGRATED) {
            continue;
        }

        if (gpu->type == FF_GPU_TYPE_DISCRETE && options->hideType == FF_GPU_TYPE_DISCRETE) {
            continue;
        }

        *FF_LIST_ADD(const FFGPUResult*, selectedGPUs) = gpu;
    }

    uint32_t i = 0;
    FF_LIST_FOR_EACH (const FFGPUResult*, pgpu, selectedGPUs) {
        printGPUResult(options, selectedGPUs.length == 1 ? 0 : (uint8_t) (i + 1), *pgpu);
        ++i;
    }

    if (selectedGPUs.length == 0) {
        ffPrintError(FF_GPU_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "No GPUs found");
    }

    FF_LIST_FOR_EACH (FFGPUResult, gpu, gpus) {
        ffStrbufDestroy(&gpu->vendor);
        ffStrbufDestroy(&gpu->name);
        ffStrbufDestroy(&gpu->driver);
        ffStrbufDestroy(&gpu->platformApi);
        ffStrbufDestroy(&gpu->memoryType);
    }

    return true;
}

void ffParseGPUJsonObject(FFGPUOptions* 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 (ffTempsParseJsonObject(key, val, &options->temp, &options->tempConfig)) {
            continue;
        }

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

        if (unsafe_yyjson_equals_str(key, "detectionMethod")) {
            int value;
            const char* error = ffJsonConfigParseEnum(val, &value, (FFKeyValuePair[]) {
                                                                       { "auto", FF_GPU_DETECTION_METHOD_AUTO },
                                                                       { "pci", FF_GPU_DETECTION_METHOD_PCI },
                                                                       { "vulkan", FF_GPU_DETECTION_METHOD_VULKAN },
                                                                       { "opencl", FF_GPU_DETECTION_METHOD_OPENCL },
                                                                       { "opengl", FF_GPU_DETECTION_METHOD_OPENGL },
                                                                       {},
                                                                   });
            if (error) {
                ffPrintError(FF_GPU_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Invalid %s value: %s", unsafe_yyjson_get_str(key), error);
            } else {
                options->detectionMethod = (FFGPUDetectionMethod) value;
            }
            continue;
        }

        if (unsafe_yyjson_equals_str(key, "hideType")) {
            if (yyjson_is_null(val)) {
                options->hideType = FF_GPU_TYPE_NONE;
            } else {
                int value;
                const char* error = ffJsonConfigParseEnum(val, &value, (FFKeyValuePair[]) {
                                                                           { "none", FF_GPU_TYPE_NONE },
                                                                           { "unknown", FF_GPU_TYPE_UNKNOWN },
                                                                           { "integrated", FF_GPU_TYPE_INTEGRATED },
                                                                           { "discrete", FF_GPU_TYPE_DISCRETE },
                                                                           {},
                                                                       });
                if (error) {
                    ffPrintError(FF_GPU_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Invalid %s value: %s", unsafe_yyjson_get_str(key), error);
                } else {
                    options->hideType = (FFGPUType) value;
                }
            }
            continue;
        }

        if (ffPercentParseJsonObject(key, val, &options->percent)) {
            continue;
        }

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

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

    yyjson_mut_obj_add_bool(doc, module, "driverSpecific", options->driverSpecific);

    switch (options->detectionMethod) {
        case FF_GPU_DETECTION_METHOD_AUTO:
            yyjson_mut_obj_add_str(doc, module, "detectionMethod", "auto");
            break;
        case FF_GPU_DETECTION_METHOD_PCI:
            yyjson_mut_obj_add_str(doc, module, "detectionMethod", "pci");
            break;
        case FF_GPU_DETECTION_METHOD_VULKAN:
            yyjson_mut_obj_add_str(doc, module, "detectionMethod", "vulkan");
            break;
        case FF_GPU_DETECTION_METHOD_OPENCL:
            yyjson_mut_obj_add_str(doc, module, "detectionMethod", "opencl");
            break;
        case FF_GPU_DETECTION_METHOD_OPENGL:
            yyjson_mut_obj_add_str(doc, module, "detectionMethod", "opengl");
            break;
    }

    ffTempsGenerateJsonConfig(doc, module, options->temp, options->tempConfig);

    switch (options->hideType) {
        case FF_GPU_TYPE_NONE:
            yyjson_mut_obj_add_str(doc, module, "hideType", "none");
            break;
        case FF_GPU_TYPE_UNKNOWN:
            yyjson_mut_obj_add_str(doc, module, "hideType", "unknown");
            break;
        case FF_GPU_TYPE_INTEGRATED:
            yyjson_mut_obj_add_str(doc, module, "hideType", "integrated");
            break;
        case FF_GPU_TYPE_DISCRETE:
            yyjson_mut_obj_add_str(doc, module, "hideType", "discrete");
            break;
    }

    ffPercentGenerateJsonConfig(doc, module, options->percent);
}

bool ffGenerateGPUJsonResult(FFGPUOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
    FF_LIST_AUTO_DESTROY gpus = ffListCreate();
    const char* error = ffDetectGPU(options, &gpus);
    if (error) {
        yyjson_mut_obj_add_str(doc, module, "error", error);
        return false;
    }

    yyjson_mut_val* arr = yyjson_mut_obj_add_arr(doc, module, "result");
    FF_LIST_FOR_EACH (FFGPUResult, gpu, gpus) {
        yyjson_mut_val* obj = yyjson_mut_arr_add_obj(doc, arr);

        if (gpu->index != FF_GPU_INDEX_UNSET) {
            yyjson_mut_obj_add_uint(doc, obj, "index", gpu->index);
        } else {
            yyjson_mut_obj_add_null(doc, obj, "index");
        }

        if (gpu->coreCount != FF_GPU_CORE_COUNT_UNSET) {
            yyjson_mut_obj_add_int(doc, obj, "coreCount", gpu->coreCount);
        } else {
            yyjson_mut_obj_add_null(doc, obj, "coreCount");
        }

        if (gpu->coreUsage != FF_GPU_CORE_USAGE_UNSET) {
            yyjson_mut_obj_add_real(doc, obj, "coreUsage", gpu->coreUsage);
        } else {
            yyjson_mut_obj_add_null(doc, obj, "coreUsage");
        }

        yyjson_mut_val* memoryObj = yyjson_mut_obj_add_obj(doc, obj, "memory");

        yyjson_mut_val* dedicatedObj = yyjson_mut_obj_add_obj(doc, memoryObj, "dedicated");
        if (gpu->dedicated.total != FF_GPU_VMEM_SIZE_UNSET) {
            yyjson_mut_obj_add_uint(doc, dedicatedObj, "total", gpu->dedicated.total);
        } else {
            yyjson_mut_obj_add_null(doc, dedicatedObj, "total");
        }

        if (gpu->dedicated.used != FF_GPU_VMEM_SIZE_UNSET) {
            yyjson_mut_obj_add_uint(doc, dedicatedObj, "used", gpu->dedicated.used);
        } else {
            yyjson_mut_obj_add_null(doc, dedicatedObj, "used");
        }

        yyjson_mut_val* sharedObj = yyjson_mut_obj_add_obj(doc, memoryObj, "shared");
        if (gpu->shared.total != FF_GPU_VMEM_SIZE_UNSET) {
            yyjson_mut_obj_add_uint(doc, sharedObj, "total", gpu->shared.total);
        } else {
            yyjson_mut_obj_add_null(doc, sharedObj, "total");
        }
        if (gpu->shared.used != FF_GPU_VMEM_SIZE_UNSET) {
            yyjson_mut_obj_add_uint(doc, sharedObj, "used", gpu->shared.used);
        } else {
            yyjson_mut_obj_add_null(doc, sharedObj, "used");
        }

        if (gpu->memoryType.length) {
            yyjson_mut_obj_add_strbuf(doc, memoryObj, "type", &gpu->memoryType);
        } else {
            yyjson_mut_obj_add_null(doc, memoryObj, "type");
        }

        yyjson_mut_obj_add_strbuf(doc, obj, "driver", &gpu->driver);
        yyjson_mut_obj_add_strbuf(doc, obj, "name", &gpu->name);

        if (gpu->temperature != FF_GPU_TEMP_UNSET) {
            yyjson_mut_obj_add_real(doc, obj, "temperature", gpu->temperature);
        } else {
            yyjson_mut_obj_add_null(doc, obj, "temperature");
        }

        const char* type;
        switch (gpu->type) {
            case FF_GPU_TYPE_INTEGRATED:
                type = "Integrated";
                break;
            case FF_GPU_TYPE_DISCRETE:
                type = "Discrete";
                break;
            default:
                type = NULL;
                break;
        }
        if (type) {
            yyjson_mut_obj_add_str(doc, obj, "type", type);
        } else {
            yyjson_mut_obj_add_null(doc, obj, "type");
        }

        yyjson_mut_obj_add_strbuf(doc, obj, "vendor", &gpu->vendor);

        yyjson_mut_obj_add_strbuf(doc, obj, "platformApi", &gpu->platformApi);

        if (gpu->frequency != FF_GPU_FREQUENCY_UNSET) {
            yyjson_mut_obj_add_uint(doc, obj, "frequency", gpu->frequency);
        } else {
            yyjson_mut_obj_add_null(doc, obj, "frequency");
        }

        yyjson_mut_obj_add_uint(doc, obj, "deviceId", gpu->deviceId);
    }

    FF_LIST_FOR_EACH (FFGPUResult, gpu, gpus) {
        ffStrbufDestroy(&gpu->vendor);
        ffStrbufDestroy(&gpu->name);
        ffStrbufDestroy(&gpu->driver);
        ffStrbufDestroy(&gpu->platformApi);
        ffStrbufDestroy(&gpu->memoryType);
    }

    return true;
}

void ffInitGPUOptions(FFGPUOptions* options) {
    ffOptionInitModuleArg(&options->moduleArgs, "󰾲");

    options->driverSpecific = false;
    options->detectionMethod =
#if defined(__x86_64__) || defined(__i386__)
        FF_GPU_DETECTION_METHOD_PCI
#else
        FF_GPU_DETECTION_METHOD_AUTO
#endif
        ;
    options->temp = false;
    options->hideType = FF_GPU_TYPE_NONE;
    options->tempConfig = (FFColorRangeConfig) { 60, 80 };
    options->percent = (FFPercentageModuleConfig) { 50, 80, 0 };
}

void ffDestroyGPUOptions(FFGPUOptions* options) {
    ffOptionDestroyModuleArg(&options->moduleArgs);
}

FFModuleBaseInfo ffGPUModuleInfo = {
    .name = FF_GPU_MODULE_NAME,
    .description = "Print GPU names, memory sizes, types, etc",
    .initOptions = (void*) ffInitGPUOptions,
    .destroyOptions = (void*) ffDestroyGPUOptions,
    .parseJsonObject = (void*) ffParseGPUJsonObject,
    .printModule = (void*) ffPrintGPU,
    .generateJsonResult = (void*) ffGenerateGPUJsonResult,
    .generateJsonConfig = (void*) ffGenerateGPUJsonConfig,
    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
        { "GPU vendor", "vendor" },
        { "GPU name", "name" },
        { "GPU driver", "driver" },
        { "GPU temperature", "temperature" },
        { "GPU core count", "core-count" },
        { "GPU type", "type" },
        { "GPU total dedicated memory", "dedicated-total" },
        { "GPU used dedicated memory", "dedicated-used" },
        { "GPU total shared memory", "shared-total" },
        { "GPU used shared memory", "shared-used" },
        { "The platform API used when detecting the GPU", "platform-api" },
        { "Current frequency in GHz", "frequency" },
        { "GPU vendor specific index", "index" },
        { "Dedicated memory usage percentage num", "dedicated-percentage-num" },
        { "Dedicated memory usage percentage bar", "dedicated-percentage-bar" },
        { "Shared memory usage percentage num", "shared-percentage-num" },
        { "Shared memory usage percentage bar", "shared-percentage-bar" },
        { "Core usage percentage num", "core-usage-num" },
        { "Core usage percentage bar", "core-usage-bar" },
        { "Memory type (Windows only)", "memory-type" },
    })),
};