#include "common/percent.h"
#include "common/printing.h"
#include "common/jsonconfig.h"
#include "common/strutil.h"
#include "detection/brightness/brightness.h"
#include "modules/brightness/brightness.h"

bool ffPrintBrightness(FFBrightnessOptions* options) {
    FF_LIST_AUTO_DESTROY result = ffListCreate();

    const char* error = ffDetectBrightness(options, &result);

    if (error) {
        ffPrintError(FF_BRIGHTNESS_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "%s", error);
        return false;
    }

    if (result.length == 0) {
        ffPrintError(FF_BRIGHTNESS_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "No result is detected.");
        return false;
    }

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

    if (options->compact) {
        FF_STRBUF_AUTO_DESTROY str = ffStrbufCreate();

        FF_LIST_FOR_EACH (FFBrightnessResult, item, result) {
            if (str.length > 0) {
                ffStrbufAppendC(&str, ' ');
            }

            const double percent = (item->current - item->min) / (item->max - item->min) * 100;
            ffPercentAppendNum(&str, percent, options->percent, false, &options->moduleArgs);
        }

        ffPrintLogoAndKey(FF_BRIGHTNESS_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
        ffStrbufPutTo(&str, stdout);
        return true;
    }

    FF_STRBUF_AUTO_DESTROY key = ffStrbufCreate();

    uint32_t index = 0;
    FF_LIST_FOR_EACH (FFBrightnessResult, item, result) {
        if (options->moduleArgs.key.length == 0) {
            ffStrbufAppendF(&key, "%s (%s)", FF_BRIGHTNESS_MODULE_NAME, item->name.chars);
        } else {
            uint32_t moduleIndex = result.length == 1 ? 0 : index + 1;
            FF_PARSE_FORMAT_STRING_CHECKED(&key, &options->moduleArgs.key, ((FFformatarg[]) {
                                                                               FF_ARG(moduleIndex, "index"),
                                                                               FF_ARG(item->name, "name"),
                                                                               FF_ARG(options->moduleArgs.keyIcon, "icon"),
                                                                           }));
        }

        const double percent = (item->current - item->min) / (item->max - item->min) * 100;

        if (options->moduleArgs.outputFormat.length == 0) {
            FF_STRBUF_AUTO_DESTROY str = ffStrbufCreate();
            ffPrintLogoAndKey(key.chars, 0, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY);

            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
                ffPercentAppendBar(&str, percent, options->percent, &options->moduleArgs);
            }

            if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
                if (str.length > 0) {
                    ffStrbufAppendC(&str, ' ');
                }

                ffPercentAppendNum(&str, percent, options->percent, str.length > 0, &options->moduleArgs);
            }

            ffStrbufAppendS(&str, item->builtin ? " [Built-in]" : " [External]");

            ffStrbufPutTo(&str, stdout);
        } else {
            FF_STRBUF_AUTO_DESTROY valueNum = ffStrbufCreate();
            if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
                ffPercentAppendNum(&valueNum, percent, options->percent, false, &options->moduleArgs);
            }
            FF_STRBUF_AUTO_DESTROY valueBar = ffStrbufCreate();
            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
                ffPercentAppendBar(&valueBar, percent, options->percent, &options->moduleArgs);
            }

            FF_PRINT_FORMAT_CHECKED(key.chars, 0, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY, ((FFformatarg[]) {
                                                                                                         FF_ARG(valueNum, "percentage"),
                                                                                                         FF_ARG(item->name, "name"),
                                                                                                         FF_ARG(item->max, "max"),
                                                                                                         FF_ARG(item->min, "min"),
                                                                                                         FF_ARG(item->current, "current"),
                                                                                                         FF_ARG(valueBar, "percentage-bar"),
                                                                                                         FF_ARG(item->builtin, "is-builtin"),
                                                                                                     }));
        }

        ffStrbufClear(&key);
        ffStrbufDestroy(&item->name);
        ++index;
    }

    return true;
}

void ffParseBrightnessJsonObject(FFBrightnessOptions* 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, "ddcciSleep")) {
            if (yyjson_is_null(val)) {
                options->ddcciSleep = FF_BRIGHTNESS_DDCCI_SLEEP_SKIP;
            } else {
                options->ddcciSleep = (uint32_t) yyjson_get_uint(val);
            }
            continue;
        }

        if (unsafe_yyjson_equals_str(key, "compact")) {
            options->compact = (uint32_t) yyjson_get_bool(val);
            continue;
        }

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

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

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

    if (options->ddcciSleep == FF_BRIGHTNESS_DDCCI_SLEEP_SKIP) {
        yyjson_mut_obj_add_null(doc, module, "ddcciSleep");
    } else {
        yyjson_mut_obj_add_uint(doc, module, "ddcciSleep", options->ddcciSleep);
    }

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

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

bool ffGenerateBrightnessJsonResult(FF_A_UNUSED FFBrightnessOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
    FF_LIST_AUTO_DESTROY result = ffListCreate();

    const char* error = ffDetectBrightness(options, &result);

    if (error) {
        yyjson_mut_obj_add_str(doc, module, "error", error);
        return false;
    }

    yyjson_mut_val* arr = yyjson_mut_arr(doc);
    yyjson_mut_obj_add_val(doc, module, "result", arr);

    FF_LIST_FOR_EACH (FFBrightnessResult, item, result) {
        yyjson_mut_val* obj = yyjson_mut_arr_add_obj(doc, arr);
        yyjson_mut_obj_add_strbuf(doc, obj, "name", &item->name);
        yyjson_mut_obj_add_real(doc, obj, "max", item->max);
        yyjson_mut_obj_add_real(doc, obj, "min", item->min);
        yyjson_mut_obj_add_real(doc, obj, "current", item->current);
        yyjson_mut_obj_add_bool(doc, obj, "builtin", item->builtin);
    }

    FF_LIST_FOR_EACH (FFBrightnessResult, item, result) {
        ffStrbufDestroy(&item->name);
    }

    return true;
}

void ffInitBrightnessOptions(FFBrightnessOptions* options) {
    ffOptionInitModuleArg(&options->moduleArgs, "󰯪");

    options->ddcciSleep = 10;
    options->percent = (FFPercentageModuleConfig) { 100, 100, 0 };
    options->compact = false;
}

void ffDestroyBrightnessOptions(FFBrightnessOptions* options) {
    ffOptionDestroyModuleArg(&options->moduleArgs);
}

FFModuleBaseInfo ffBrightnessModuleInfo = {
    .name = FF_BRIGHTNESS_MODULE_NAME,
    .description = "Print the current brightness level of your monitors",
    .initOptions = (void*) ffInitBrightnessOptions,
    .destroyOptions = (void*) ffDestroyBrightnessOptions,
    .parseJsonObject = (void*) ffParseBrightnessJsonObject,
    .printModule = (void*) ffPrintBrightness,
    .generateJsonResult = (void*) ffGenerateBrightnessJsonResult,
    .generateJsonConfig = (void*) ffGenerateBrightnessJsonConfig,
    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
        { "Screen brightness (percentage num)", "percentage" },
        { "Screen name", "name" },
        { "Maximum brightness value", "max" },
        { "Minimum brightness value", "min" },
        { "Current brightness value", "current" },
        { "Screen brightness (percentage bar)", "percentage-bar" },
        { "Is built-in screen", "is-builtin" },
    }))
};