<svelte:options customElement={{ props: {} }} />

<script lang="ts">
  import type {Snippet} from 'svelte';
  import {Render} from './index';

  interface Item {
        key: string;
        icon?: string | Snippet;
        title: string | Snippet;
        titleHelp?: string;
        description?: string | Snippet;
        content: string | Snippet;
    }

    let { items, onChange, activeKeys = $bindable([]), ...rest }: {
        items: Item[],
        onChange?: (item: Item, activeKeys: string[]) => void,
        activeKeys?: string[],
        [key: string]: any
    } = $props();

    function handlerOnChange(item: Item) {
        if (activeKeys.includes(item.key)) {
            activeKeys = activeKeys.filter(key => key !== item.key);
        } else {
            activeKeys.push(item.key);
            activeKeys = activeKeys;
        }
        onChange?.(item, activeKeys);
    }

</script>
<div style={rest.style} class="tf-collapse {rest.class}">
    {#each items as item, index}
        <div class="tf-collapse-item">
            <div class="tf-collapse-item-title tf-node-drag-handle" role="button" tabindex={index}
                 onclick={() => handlerOnChange(item)}
                 onkeydown={(event) => {
                    if (event.key === 'Enter' || event.key === ' ') {
                      event.preventDefault();
                      handlerOnChange(item);
                    }
             }}
            >
                {#if item.icon}
                <span class="tf-collapse-item-title-icon">
                    <Render target={item.icon} />
                </span>
                {/if}

                <Render target={item.title} />
                {#if item.titleHelp}
                    <span
                        class="tf-collapse-item-title-help"
                        data-help={item.titleHelp}
                        aria-label="节点使用说明"
                    >
                        ?
                    </span>
                {/if}

                <span class="tf-collapse-item-title-arrow {activeKeys.includes(item.key) ? 'rotate-90' : ''}">
                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><path
                        d="M13.1717 12.0007L8.22192 7.05093L9.63614 5.63672L16.0001 12.0007L9.63614 18.3646L8.22192 16.9504L13.1717 12.0007Z"></path></svg>
                </span>
            </div>
            {#if item.description}
                <div class="tf-collapse-item-description">
                    <Render target={item.description} />
                </div>
            {/if}

            {#if activeKeys.includes(item.key)}
                <div class="tf-collapse-item-content">
                    <Render target={item.content} />
                </div>
            {/if}
        </div>
    {/each}
</div>


<style>
    /* 定义旋转的 CSS 类 */
    .rotate-90 {
        transform: rotate(90deg);
        transition: transform 0.3s ease;
    }

    .tf-collapse-item-title-help {
        margin-left: 6px;
        width: 16px;
        height: 16px;
        border-radius: 50%;
        border: 1px solid var(--tf-border-color-strong);
        color: var(--tf-text-secondary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 11px;
        line-height: 1;
        cursor: default;
        user-select: none;
        background: var(--tf-bg-surface);
        position: relative;
    }

    .tf-collapse-item-title-help:hover {
        border-color: var(--tf-border-color-strong);
        color: var(--tf-text-primary);
        background: var(--tf-bg-hover);
    }

    .tf-node-drag-handle {
        cursor: grab;
    }

    :global(.svelte-flow__node.dragging) .tf-node-drag-handle {
        cursor: grabbing;
    }

    .tf-collapse-item-title-help::after {
        content: attr(data-help);
        position: absolute;
        left: calc(100% + 10px);
        top: 50%;
        transform: translateY(-50%);
        min-width: 260px;
        max-width: 420px;
        white-space: pre-line;
        background: var(--tf-tip-bg);
        color: var(--tf-tip-text);
        border-radius: 8px;
        padding: 10px 12px;
        font-size: 12px;
        line-height: 1.45;
        box-shadow: var(--tf-shadow-medium);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        z-index: 120;
    }

    .tf-collapse-item-title-help::before {
        content: "";
        position: absolute;
        left: calc(100% + 4px);
        top: 50%;
        transform: translateY(-50%);
        border-top: 6px solid transparent;
        border-bottom: 6px solid transparent;
        border-right: 6px solid var(--tf-tip-bg);
        opacity: 0;
        visibility: hidden;
        z-index: 121;
    }

    .tf-collapse-item-title-help:hover::after,
    .tf-collapse-item-title-help:hover::before {
        opacity: 1;
        visibility: visible;
    }
</style>
