/**
 * Highlight critical success or failure on d20 rolls
 */
export const highlightCriticalSuccessFailure = function (message, html, data) {
    if (!message.isRoll || !message.isContentVisible) return;

    // Highlight rolls where the first part is a d20 roll
    const roll = message.roll;
    if (!roll.dice.length) return;
    const d = roll.dice[0];

    // Ensure it is an un-modified d20 roll
    const isD20 = d.faces === 20 && d.values.length === 1;
    if (!isD20) return;
    const isModifiedRoll = "success" in d.results[0] || d.options.marginSuccess || d.options.marginFailure;
    if (isModifiedRoll) return;

    // Highlight successes and failures
    const critical = d.options.critical || 20;
    const fumble = d.options.fumble || 1;
    if (d.total >= critical) html.find(".dice-total").addClass("critical");
    else if (d.total <= fumble) html.find(".dice-total").addClass("fumble");
    else if (d.options.target) {
        if (roll.total >= d.options.target) html.find(".dice-total").addClass("success");
        else html.find(".dice-total").addClass("failure");
    }
};

/* -------------------------------------------- */

/**
 * Optionally hide the display of chat card action buttons which cannot be performed by the user
 */
export const displayChatActionButtons = function (message, html, data) {
    const chatCard = html.find(".sw5e.chat-card");
    if (chatCard.length > 0) {
        const flavor = html.find(".flavor-text");
        if (flavor.text() === html.find(".item-name").text()) flavor.remove();

        // If the user is the message author or the actor owner, proceed
        let actor = game.actors.get(data.message.speaker.actor);
        if (actor && actor.isOwner) return;
        else if (game.user.isGM || data.author.id === game.user.id) return;

        // Otherwise conceal action buttons except for saving throw
        const buttons = chatCard.find("button[data-action]");
        buttons.each((i, btn) => {
            if (btn.dataset.action === "save") return;
            btn.style.display = "none";
        });
    }
};

/* -------------------------------------------- */

/**
 * This function is used to hook into the Chat Log context menu to add additional options to each message
 * These options make it easy to conveniently apply damage to controlled tokens based on the value of a Roll
 *
 * @param {HTMLElement} html    The Chat Message being rendered
 * @param {Array} options       The Array of Context Menu options
 *
 * @return {Array}              The extended options Array including new context choices
 */
export const addChatMessageContextOptions = function (html, options) {
    let canApply = (li) => {
        const message = game.messages.get(li.data("messageId"));
        return message?.isRoll && message?.isContentVisible && canvas.tokens?.controlled.length;
    };
    options.push(
        {
            name: game.i18n.localize("SW5E.ChatContextDamage"),
            icon: '<i class="fas fa-user-minus"></i>',
            condition: canApply,
            callback: (li) => applyChatCardDamage(li, 1)
        },
        {
            name: game.i18n.localize("SW5E.ChatContextHealing"),
            icon: '<i class="fas fa-user-plus"></i>',
            condition: canApply,
            callback: (li) => applyChatCardDamage(li, -1)
        },
        {
            name: game.i18n.localize("SW5E.ChatContextDoubleDamage"),
            icon: '<i class="fas fa-user-injured"></i>',
            condition: canApply,
            callback: (li) => applyChatCardDamage(li, 2)
        },
        {
            name: game.i18n.localize("SW5E.ChatContextHalfDamage"),
            icon: '<i class="fas fa-user-shield"></i>',
            condition: canApply,
            callback: (li) => applyChatCardDamage(li, 0.5)
        }
    );
    return options;
};

/* -------------------------------------------- */

/**
 * Apply rolled dice damage to the token or tokens which are currently controlled.
 * This allows for damage to be scaled by a multiplier to account for healing, critical hits, or resistance
 *
 * @param {HTMLElement} li      The chat entry which contains the roll data
 * @param {Number} multiplier   A damage multiplier to apply to the rolled damage.
 * @return {Promise}
 */
function applyChatCardDamage(li, multiplier) {
    const message = game.messages.get(li.data("messageId"));
    const roll = message.roll;
    return Promise.all(
        canvas.tokens.controlled.map((t) => {
            const a = t.actor;
            return a.applyDamage(roll.total, multiplier);
        })
    );
}

/* -------------------------------------------- */