import { usePopper } from '../../internal/actions/index.js';
import { addMeltEventListener, makeElement, createElHelpers, derivedVisible, effect, executeCallbacks, getPortalDestination, getTabbableNodes, isBrowser, isElement, isFocusVisible, isHTMLElement, isTouch, noop, overridable, sleep, styleToString, toWritableStores, portalAttr, } from '../../internal/helpers/index.js';
import { safeOnMount } from '../../internal/helpers/lifecycle.js';
import { withGet } from '../../internal/helpers/withGet.js';
import { writable } from 'svelte/store';
import { generateIds } from '../../internal/helpers/id.js';
import { omit } from '../../internal/helpers/object.js';
import { tick } from 'svelte';
const { name } = createElHelpers('hover-card');
const defaults = {
    defaultOpen: false,
    openDelay: 1000,
    closeDelay: 100,
    positioning: {
        placement: 'bottom',
    },
    arrowSize: 8,
    closeOnOutsideClick: true,
    forceVisible: false,
    portal: undefined,
    closeOnEscape: true,
    onOutsideClick: undefined,
};
export const linkPreviewIdParts = ['trigger', 'content'];
export function createLinkPreview(props = {}) {
    const withDefaults = { ...defaults, ...props };
    const openWritable = withDefaults.open ?? writable(withDefaults.defaultOpen);
    const open = overridable(openWritable, withDefaults?.onOpenChange);
    const hasSelection = withGet.writable(false);
    const isPointerDownOnContent = withGet.writable(false);
    const containSelection = writable(false);
    const activeTrigger = writable(null);
    // type OpenReason = 'pointer' | 'focus';
    // const openReason = writable<null | OpenReason>(null);
    const options = toWritableStores(omit(withDefaults, 'ids'));
    const { openDelay, closeDelay, positioning, arrowSize, closeOnOutsideClick, forceVisible, portal, closeOnEscape, onOutsideClick, } = options;
    const ids = toWritableStores({ ...generateIds(linkPreviewIdParts), ...withDefaults.ids });
    let timeout = null;
    let originalBodyUserSelect;
    const handleOpen = withGet.derived(openDelay, ($openDelay) => {
        return () => {
            if (timeout) {
                window.clearTimeout(timeout);
                timeout = null;
            }
            timeout = window.setTimeout(() => {
                open.set(true);
            }, $openDelay);
        };
    });
    const handleClose = withGet.derived([closeDelay, isPointerDownOnContent, hasSelection], ([$closeDelay, $isPointerDownOnContent, $hasSelection]) => {
        return () => {
            if (timeout) {
                window.clearTimeout(timeout);
                timeout = null;
            }
            if (!$isPointerDownOnContent && !$hasSelection) {
                timeout = window.setTimeout(() => {
                    open.set(false);
                }, $closeDelay);
            }
        };
    });
    const trigger = makeElement(name('trigger'), {
        stores: [open, ids.trigger, ids.content],
        returned: ([$open, $triggerId, $contentId]) => {
            return {
                role: 'button',
                'aria-haspopup': 'dialog',
                'aria-expanded': $open,
                'data-state': $open ? 'open' : 'closed',
                'aria-controls': $contentId,
                id: $triggerId,
            };
        },
        action: (node) => {
            const unsub = executeCallbacks(addMeltEventListener(node, 'pointerenter', (e) => {
                if (isTouch(e))
                    return;
                handleOpen.get()();
            }), addMeltEventListener(node, 'pointerleave', (e) => {
                if (isTouch(e))
                    return;
                handleClose.get()();
            }), addMeltEventListener(node, 'focus', (e) => {
                if (!isElement(e.currentTarget) || !isFocusVisible(e.currentTarget))
                    return;
                handleOpen.get()();
            }), addMeltEventListener(node, 'blur', () => handleClose.get()()));
            return {
                destroy: unsub,
            };
        },
    });
    const isVisible = derivedVisible({ open, forceVisible, activeTrigger });
    const content = makeElement(name('content'), {
        stores: [isVisible, portal, ids.content],
        returned: ([$isVisible, $portal, $contentId]) => {
            return {
                hidden: $isVisible ? undefined : true,
                tabindex: -1,
                style: styleToString({
                    'pointer-events': $isVisible ? undefined : 'none',
                    opacity: $isVisible ? 1 : 0,
                    userSelect: 'text',
                    WebkitUserSelect: 'text',
                }),
                id: $contentId,
                'data-state': $isVisible ? 'open' : 'closed',
                'data-portal': portalAttr($portal),
            };
        },
        action: (node) => {
            let unsub = noop;
            const unsubTimers = () => {
                if (timeout) {
                    window.clearTimeout(timeout);
                }
            };
            let unsubPopper = noop;
            const unsubDerived = effect([isVisible, activeTrigger, positioning, closeOnOutsideClick, portal, closeOnEscape], ([$isVisible, $activeTrigger, $positioning, $closeOnOutsideClick, $portal, $closeOnEscape,]) => {
                unsubPopper();
                if (!$isVisible || !$activeTrigger)
                    return;
                tick().then(() => {
                    const popper = usePopper(node, {
                        anchorElement: $activeTrigger,
                        open: open,
                        options: {
                            floating: $positioning,
                            modal: {
                                closeOnInteractOutside: $closeOnOutsideClick,
                                onClose: () => {
                                    open.set(false);
                                    $activeTrigger.focus();
                                },
                                shouldCloseOnInteractOutside: (e) => {
                                    onOutsideClick.get()?.(e);
                                    if (e.defaultPrevented)
                                        return false;
                                    if (isHTMLElement($activeTrigger) &&
                                        $activeTrigger.contains(e.target))
                                        return false;
                                    return true;
                                },
                                open: $isVisible,
                            },
                            portal: getPortalDestination(node, $portal),
                            focusTrap: null,
                            escapeKeydown: $closeOnEscape ? undefined : null,
                        },
                    });
                    if (popper && popper.destroy) {
                        unsubPopper = popper.destroy;
                    }
                });
            });
            unsub = executeCallbacks(addMeltEventListener(node, 'pointerdown', (e) => {
                const currentTarget = e.currentTarget;
                const target = e.target;
                if (!isHTMLElement(currentTarget) || !isHTMLElement(target))
                    return;
                if (currentTarget.contains(target)) {
                    containSelection.set(true);
                }
                hasSelection.set(false);
                isPointerDownOnContent.set(true);
            }), addMeltEventListener(node, 'pointerenter', (e) => {
                if (isTouch(e))
                    return;
                handleOpen.get()();
            }), addMeltEventListener(node, 'pointerleave', (e) => {
                if (isTouch(e))
                    return;
                handleClose.get()();
            }), addMeltEventListener(node, 'focusout', (e) => {
                e.preventDefault();
            }));
            return {
                destroy() {
                    unsub();
                    unsubPopper();
                    unsubTimers();
                    unsubDerived();
                },
            };
        },
    });
    const arrow = makeElement(name('arrow'), {
        stores: arrowSize,
        returned: ($arrowSize) => ({
            'data-arrow': true,
            style: styleToString({
                position: 'absolute',
                width: `var(--arrow-size, ${$arrowSize}px)`,
                height: `var(--arrow-size, ${$arrowSize}px)`,
            }),
        }),
    });
    effect([containSelection], ([$containSelection]) => {
        if (!isBrowser || !$containSelection)
            return;
        const body = document.body;
        const contentElement = document.getElementById(ids.content.get());
        if (!contentElement)
            return;
        // prefix for safari
        originalBodyUserSelect = body.style.userSelect || body.style.webkitUserSelect;
        const originalContentUserSelect = contentElement.style.userSelect || contentElement.style.webkitUserSelect;
        body.style.userSelect = 'none';
        body.style.webkitUserSelect = 'none';
        contentElement.style.userSelect = 'text';
        contentElement.style.webkitUserSelect = 'text';
        return () => {
            body.style.userSelect = originalBodyUserSelect;
            body.style.webkitUserSelect = originalBodyUserSelect;
            contentElement.style.userSelect = originalContentUserSelect;
            contentElement.style.webkitUserSelect = originalContentUserSelect;
        };
    });
    safeOnMount(() => {
        const triggerEl = document.getElementById(ids.trigger.get());
        if (!triggerEl)
            return;
        activeTrigger.set(triggerEl);
    });
    effect([open], ([$open]) => {
        if (!isBrowser || !$open) {
            hasSelection.set(false);
            return;
        }
        const handlePointerUp = () => {
            containSelection.set(false);
            isPointerDownOnContent.set(false);
            sleep(1).then(() => {
                const isSelection = document.getSelection()?.toString() !== '';
                if (isSelection) {
                    hasSelection.set(true);
                }
            });
        };
        document.addEventListener('pointerup', handlePointerUp);
        const contentElement = document.getElementById(ids.content.get());
        if (!contentElement)
            return;
        const tabbables = getTabbableNodes(contentElement);
        tabbables.forEach((tabbable) => tabbable.setAttribute('tabindex', '-1'));
        return () => {
            document.removeEventListener('pointerup', handlePointerUp);
            hasSelection.set(false);
            isPointerDownOnContent.set(false);
        };
    });
    return {
        ids,
        elements: {
            trigger,
            content,
            arrow,
        },
        states: {
            open,
        },
        options,
    };
}