/**
 * `materialTooltip`: shows an `<x-tooltip>` popover for the control it belongs to.
 *
 * The trigger is the popover's parent element (the button, or the standalone wrapper). Hover
 * counts only for a pointer that can hover, after a short delay so a pointer passing over a
 * toolbar does not flash every label; keyboard focus shows it at once. A press and Escape hide it
 * at once; leaving and blur let it stand for M3's 1.5s, so the words can still be read while the
 * pointer moves on. Only one tooltip is up at a time: showing one takes the last one down, which
 * the browser will not do for us because these are `popover="manual"`.
 */
const HOVER_DELAY_MS = 500
const LEAVE_DELAY_MS = 1500

let visible = null

document.addEventListener('alpine:init', () => {
    window.Alpine.data('materialTooltip', () => ({
        timer: null,
        listeners: [],

        init() {
            const tip = this.$el
            const trigger = tip.parentElement

            const open = () => tip.matches(':popover-open')

            const show = (delay) => {
                clearTimeout(this.timer)
                this.timer = setTimeout(() => {
                    if (!tip.isConnected || open()) {
                        return
                    }

                    if (visible && visible !== tip && visible.matches(':popover-open')) {
                        visible.hidePopover()
                    }

                    visible = tip
                    tip.showPopover()
                }, delay)
            }

            const hide = (delay = 0) => {
                clearTimeout(this.timer)
                this.timer = setTimeout(() => {
                    if (open()) {
                        tip.hidePopover()
                    }

                    if (visible === tip) {
                        visible = null
                    }
                }, delay)
            }

            this.listen(trigger, 'pointerenter', (event) => event.pointerType === 'mouse' && show(HOVER_DELAY_MS))
            this.listen(trigger, 'pointerleave', () => hide(LEAVE_DELAY_MS))
            this.listen(trigger, 'pointerdown', () => hide())
            this.listen(trigger, 'focusin', () => trigger.matches(':focus-within:has(:focus-visible), :focus-visible') && show(0))
            this.listen(trigger, 'focusout', () => hide(LEAVE_DELAY_MS))
            this.listen(document, 'keydown', (event) => event.key === 'Escape' && hide())
        },

        listen(target, type, handler) {
            target.addEventListener(type, handler)
            this.listeners.push(() => target.removeEventListener(type, handler))
        },

        destroy() {
            clearTimeout(this.timer)

            if (visible === this.$el) {
                visible = null
            }

            this.listeners.forEach((remove) => remove())
        },
    }))
})