import { waitForDiceSoNice } from '../../helpers/utils.mjs';
import { emitAsGM, GMUpdateEvent, RefreshType, socketEvent } from '../../systemRegistration/socket.mjs';

const { HandlebarsApplicationMixin, ApplicationV2 } = foundry.applications.api;

/**
 * A UI element which displays the countdowns in this world.
 *
 * @extends ApplicationV2
 * @mixes HandlebarsApplication
 */

export default class DhCountdowns extends HandlebarsApplicationMixin(ApplicationV2) {
    constructor(options = {}) {
        super(options);

        this.setupHooks();
    }

    /** @inheritDoc */
    static DEFAULT_OPTIONS = {
        id: 'countdowns',
        tag: 'div',
        classes: ['daggerheart', 'dh-style', 'countdowns', 'faded-ui'],
        window: {
            icon: 'fa-solid fa-clock-rotate-left',
            frame: true,
            title: 'DAGGERHEART.UI.Countdowns.title',
            positioned: false,
            resizable: false,
            minimizable: false
        },
        actions: {
            toggleViewMode: DhCountdowns.#toggleViewMode,
            editCountdowns: DhCountdowns.#editCountdowns,
            loopCountdown: DhCountdowns.#loopCountdown,
            decreaseCountdown: (_, target) => this.editCountdown(false, target),
            increaseCountdown: (_, target) => this.editCountdown(true, target)
        },
        position: {
            width: 400,
            height: 222,
            top: 50
        }
    };

    /** @override */
    static PARTS = {
        resources: {
            root: true,
            template: 'systems/daggerheart/templates/ui/countdowns.hbs'
        }
    };

    get element() {
        return document.body.querySelector('.daggerheart.dh-style.countdowns');
    }

    /**@inheritdoc */
    async _renderFrame(options) {
        const frame = await super._renderFrame(options);

        const iconOnly =
            game.user.getFlag(CONFIG.DH.id, CONFIG.DH.FLAGS.userFlags.countdownMode) ===
            CONFIG.DH.GENERAL.countdownAppMode.iconOnly;
        if (iconOnly) frame.classList.add('icon-only');
        else frame.classList.remove('icon-only');

        const header = frame.querySelector('.window-header');
        header.querySelector('button[data-action="close"]').remove();

        if (game.user.isGM) {
            const editTooltip = game.i18n.localize('DAGGERHEART.APPLICATIONS.CountdownEdit.editTitle');
            const editButton = `<a style="margin-right: 8px;" class="header-control" data-tooltip="${editTooltip}" aria-label="${editTooltip}" data-action="editCountdowns"><i class="fa-solid fa-wrench"></i></a>`;
            header.insertAdjacentHTML('beforeEnd', editButton);
        }

        const minimizeTooltip = game.i18n.localize('DAGGERHEART.UI.Countdowns.toggleIconMode');
        const minimizeButton = `<a class="header-control" data-tooltip="${minimizeTooltip}" aria-label="${minimizeTooltip}" data-action="toggleViewMode"><i class="fa-solid fa-down-left-and-up-right-to-center"></i></a>`;
        header.insertAdjacentHTML('beforeEnd', minimizeButton);

        return frame;
    }

    /** Returns countdown data filtered by ownership */
    #getCountdowns() {
        const setting = game.settings.get(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Countdowns);
        const values = Object.entries(setting.countdowns).map(([key, countdown]) => ({
            key,
            countdown,
            ownership: DhCountdowns.#getPlayerOwnership(game.user, setting, countdown)
        }));
        return values.filter(v => v.ownership !== CONST.DOCUMENT_OWNERSHIP_LEVELS.NONE);
    }

    /** @override */
    async _prepareContext(options) {
        const context = await super._prepareContext(options);
        context.isGM = game.user.isGM;

        context.iconOnly =
            game.user.getFlag(CONFIG.DH.id, CONFIG.DH.FLAGS.userFlags.countdownMode) ===
            CONFIG.DH.GENERAL.countdownAppMode.iconOnly;
        const setting = game.settings.get(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Countdowns);
        context.countdowns = this.#getCountdowns().reduce((acc, { key, countdown, ownership }) => {
            const playersWithAccess = game.users.reduce((acc, user) => {
                const ownership = DhCountdowns.#getPlayerOwnership(user, setting, countdown);
                if (!user.isGM && ownership && ownership !== CONST.DOCUMENT_OWNERSHIP_LEVELS.NONE) {
                    acc.push(user);
                }
                return acc;
            }, []);
            const nonGmPlayers = game.users.filter(x => !x.isGM);

            const countdownEditable = game.user.isGM || ownership === CONST.DOCUMENT_OWNERSHIP_LEVELS.OWNER;
            const isLooping = countdown.progress.looping !== CONFIG.DH.GENERAL.countdownLoopingTypes.noLooping;
            const loopTooltip = isLooping
                ? countdown.progress.looping === CONFIG.DH.GENERAL.countdownLoopingTypes.increasing.id
                    ? 'DAGGERHEART.UI.Countdowns.increasingLoop'
                    : countdown.progress.looping === CONFIG.DH.GENERAL.countdownLoopingTypes.decreasing.id
                      ? 'DAGGERHEART.UI.Countdowns.decreasingLoop'
                      : 'DAGGERHEART.UI.Countdowns.loop'
                : null;
            const loopDisabled =
                !countdownEditable ||
                (isLooping && (countdown.progress.current > 0 || countdown.progress.start === '0'));

            acc[key] = {
                ...countdown,
                editable: countdownEditable,
                noPlayerAccess: nonGmPlayers.length && playersWithAccess.length === 0,
                shouldLoop: isLooping && countdown.progress.current === 0 && countdown.progress.start > 0,
                loopDisabled: isLooping ? loopDisabled : null,
                loopTooltip: isLooping && game.i18n.localize(loopTooltip)
            };
            return acc;
        }, {});

        return context;
    }

    static #getPlayerOwnership(user, setting, countdown) {
        const playerOwnership = countdown.ownership[user.id];
        return playerOwnership === undefined || playerOwnership === CONST.DOCUMENT_OWNERSHIP_LEVELS.INHERIT
            ? setting.defaultOwnership
            : playerOwnership;
    }

    cooldownRefresh = ({ refreshType }) => {
        if (refreshType === RefreshType.Countdown) this.render();
    };

    static canPerformEdit() {
        if (game.user.isGM) return true;

        const noGM = !game.users.find(x => x.isGM && x.active);
        if (noGM) {
            ui.notifications.warn(game.i18n.localize('DAGGERHEART.UI.Notifications.gmRequired'));
            return false;
        }

        return true;
    }

    static async #toggleViewMode() {
        const currentMode = game.user.getFlag(CONFIG.DH.id, CONFIG.DH.FLAGS.userFlags.countdownMode);
        const appMode = CONFIG.DH.GENERAL.countdownAppMode;
        const newMode = currentMode === appMode.textIcon ? appMode.iconOnly : appMode.textIcon;
        await game.user.setFlag(CONFIG.DH.id, CONFIG.DH.FLAGS.userFlags.countdownMode, newMode);

        if (newMode === appMode.iconOnly) this.element.classList.add('icon-only');
        else this.element.classList.remove('icon-only');
        this.render();
    }

    static async #editCountdowns() {
        new game.system.api.applications.ui.CountdownEdit().render(true);
    }

    static async #loopCountdown(_, target) {
        if (!DhCountdowns.canPerformEdit()) return;

        const settings = game.settings.get(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Countdowns);
        const countdown = settings.countdowns[target.id];

        let progressMax = countdown.progress.start;
        let message = null;
        if (countdown.progress.startFormula) {
            const roll = await new Roll(countdown.progress.startFormula).evaluate();
            progressMax = roll.total;
            message = await roll.toMessage();
        }

        const newMax =
            countdown.progress.looping === CONFIG.DH.GENERAL.countdownLoopingTypes.increasing.id
                ? Number(progressMax) + 1
                : countdown.progress.looping === CONFIG.DH.GENERAL.countdownLoopingTypes.decreasing.id
                  ? Math.max(Number(progressMax) - 1, 0)
                  : progressMax;

        await waitForDiceSoNice(message);
        await settings.updateSource({
            [`countdowns.${target.id}.progress`]: {
                current: newMax,
                start: newMax
            }
        });
        await emitAsGM(GMUpdateEvent.UpdateCountdowns, DhCountdowns.gmSetSetting.bind(settings), settings, null, {
            refreshType: RefreshType.Countdown
        });
    }

    static async editCountdown(increase, target) {
        if (!DhCountdowns.canPerformEdit()) return;

        const settings = game.settings.get(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Countdowns);
        const countdown = settings.countdowns[target.id];
        const newCurrent = increase
            ? Math.min(countdown.progress.current + 1, countdown.progress.start)
            : Math.max(countdown.progress.current - 1, 0);
        await settings.updateSource({ [`countdowns.${target.id}.progress.current`]: newCurrent });
        await emitAsGM(GMUpdateEvent.UpdateCountdowns, DhCountdowns.gmSetSetting.bind(settings), settings, null, {
            refreshType: RefreshType.Countdown
        });
    }

    static async gmSetSetting(data) {
        await game.settings.set(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Countdowns, data),
            game.socket.emit(`system.${CONFIG.DH.id}`, {
                action: socketEvent.Refresh,
                data: { refreshType: RefreshType.Countdown }
            });
        Hooks.callAll(socketEvent.Refresh, { refreshType: RefreshType.Countdown });
    }

    setupHooks() {
        Hooks.on(socketEvent.Refresh, this.cooldownRefresh.bind());
    }

    async close(options) {
        /* Opt out of Foundry's standard behavior of closing all application windows marked as UI when Escape is pressed */
        if (options.closeKey) return;

        Hooks.off(socketEvent.Refresh, this.cooldownRefresh);
        return super.close(options);
    }

    /**
     * Sends updates of the countdowns to the GM player. Since this is asynchronous, be sure to
     * update all the countdowns at the same time.
     *
     * @param  {...any} progressTypes Countdowns to be updated
     */
    static async updateCountdowns(...progressTypes) {
        const { countdownAutomation } = game.settings.get(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Automation);
        if (!countdownAutomation) return;

        const countdownSetting = game.settings.get(CONFIG.DH.id, CONFIG.DH.SETTINGS.gameSettings.Countdowns);
        const updatedCountdowns = Object.keys(countdownSetting.countdowns).reduce((acc, key) => {
            const countdown = countdownSetting.countdowns[key];
            if (progressTypes.indexOf(countdown.progress.type) !== -1 && countdown.progress.current > 0) {
                acc.push(key);
            }

            return acc;
        }, []);

        const countdownData = countdownSetting.toObject();
        const settings = {
            ...countdownData,
            countdowns: Object.keys(countdownData.countdowns).reduce((acc, key) => {
                const countdown = foundry.utils.deepClone(countdownData.countdowns[key]);
                if (updatedCountdowns.includes(key)) {
                    countdown.progress.current -= 1;
                }

                acc[key] = countdown;
                return acc;
            }, {})
        };
        await emitAsGM(GMUpdateEvent.UpdateCountdowns,
            DhCountdowns.gmSetSetting.bind(settings),
            settings, null, {
                refreshType: RefreshType.Countdown
        });
    }

    async _onRender(context, options) {
        await super._onRender(context, options);
        this.element.hidden = !game.user.isGM && this.#getCountdowns().length === 0;
        if (options?.force) {
            document.getElementById('ui-right-column-1')?.appendChild(this.element);
        }
    }
}