/*
Remark and rehype functions
 */
import { visit } from 'unist-util-visit';
const alertRegex = /^:>(NOTE|TIP|IMPORTANT|WARNING|CAUTION)/i;
/**
 * Alerts are a Markdown extension based on the blockquote syntax that you can use to emphasize critical information.
 * On GitHub, they are displayed with distinctive colors and icons to indicate the significance of the content.
 * https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#alerts
 *
 * This is adapted from `remark-github-blockquote-alert`
 */
function remarkAlert/*: Plugin<[Option?], Root> = */() /*=>*/ {
    return (tree) => {
        visit(tree, "blockquote", (node, _index, _parent) => {
            let alertType = '';
            let title = '';
            let isNext = true;
            let child = node.children.map((item) => {
                if (isNext && item.type === "paragraph") {
                    const firstNode = item.children[0];
                    const text = firstNode.type === 'text' ? firstNode.value : '';
                    const reg = alertRegex;
                    const match = text.match(reg);
                    if (match) {
                        isNext = false;
                        alertType = match[1].toLocaleLowerCase();
                        title = alertType.toLocaleUpperCase();
                        if (text.includes('\n')) {
                            item.children[0] = {
                                type: 'text',
                                value: text.replace(reg, '').replace(/^\n+/, ''),
                            };
                        }
                        if (!text.includes('\n')) {
                            const itemChild = [];
                            item.children.forEach((item, idx) => {
                                if (idx == 0)
                                    return;
                                if (idx == 1 && item.type === 'break') {
                                    return;
                                }
                                itemChild.push(item);
                            });
                            item.children = [...itemChild];
                        }
                    }
                }
                return item;
            });
            if (alertType) {
                node.data = {
                    hName: "div",
                    hProperties: {
                        class: `markdown-alert markdown-alert-${alertType}`,
                        dir: 'auto'
                    },
                };
                child.unshift({
                    type: "paragraph",
                    children: [
                        getAlertIcon(alertType),
                        {
                            type: "text",
                            value: title.replace(/^\//, ''),
                        }
                    ],
                    data: {
                        hProperties: {
                            class: "markdown-alert-title",
                            dir: "auto"
                        }
                    }
                });
            }
            node.children = [...child];
        });
    };
};
export default remarkAlert;
//type IconType = 'note' | 'tip' | 'important' | 'warning' | 'caution';
function getAlertIcon(type/*: IconType*/) /*: PhrasingContent*/ {
    let pathD = pathData[type] ?? '';
    return {
        type: "emphasis",
        data: {
            hName: "svg",
            hProperties: {
                class: "octicon",
                viewBox: '0 0 16 16',
                width: '16',
                height: '16',
                ariaHidden: 'true',
            },
        },
        children: [
            {
                type: "emphasis",
                data: {
                    hName: "path",
                    hProperties: {
                        d: pathD
                    }
                },
                children: []
            }
        ]
    };
}
const pathData = {
    note: 'M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z',
    tip: 'M8 1.5c-2.363 0-4 1.69-4 3.75 0 .984.424 1.625.984 2.304l.214.253c.223.264.47.556.673.848.284.411.537.896.621 1.49a.75.75 0 0 1-1.484.211c-.04-.282-.163-.547-.37-.847a8.456 8.456 0 0 0-.542-.68c-.084-.1-.173-.205-.268-.32C3.201 7.75 2.5 6.766 2.5 5.25 2.5 2.31 4.863 0 8 0s5.5 2.31 5.5 5.25c0 1.516-.701 2.5-1.328 3.259-.095.115-.184.22-.268.319-.207.245-.383.453-.541.681-.208.3-.33.565-.37.847a.751.751 0 0 1-1.485-.212c.084-.593.337-1.078.621-1.489.203-.292.45-.584.673-.848.075-.088.147-.173.213-.253.561-.679.985-1.32.985-2.304 0-2.06-1.637-3.75-4-3.75ZM5.75 12h4.5a.75.75 0 0 1 0 1.5h-4.5a.75.75 0 0 1 0-1.5ZM6 15.25a.75.75 0 0 1 .75-.75h2.5a.75.75 0 0 1 0 1.5h-2.5a.75.75 0 0 1-.75-.75Z',
    important: 'M0 1.75C0 .784.784 0 1.75 0h12.5C15.216 0 16 .784 16 1.75v9.5A1.75 1.75 0 0 1 14.25 13H8.06l-2.573 2.573A1.458 1.458 0 0 1 3 14.543V13H1.75A1.75 1.75 0 0 1 0 11.25Zm1.75-.25a.25.25 0 0 0-.25.25v9.5c0 .138.112.25.25.25h2a.75.75 0 0 1 .75.75v2.19l2.72-2.72a.749.749 0 0 1 .53-.22h6.5a.25.25 0 0 0 .25-.25v-9.5a.25.25 0 0 0-.25-.25Zm7 2.25v2.5a.75.75 0 0 1-1.5 0v-2.5a.75.75 0 0 1 1.5 0ZM9 9a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z',
    warning: 'M6.457 1.047c.659-1.234 2.427-1.234 3.086 0l6.082 11.378A1.75 1.75 0 0 1 14.082 15H1.918a1.75 1.75 0 0 1-1.543-2.575Zm1.763.707a.25.25 0 0 0-.44 0L1.698 13.132a.25.25 0 0 0 .22.368h12.164a.25.25 0 0 0 .22-.368Zm.53 3.996v2.5a.75.75 0 0 1-1.5 0v-2.5a.75.75 0 0 1 1.5 0ZM9 11a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z',
    caution: 'M4.47.22A.749.749 0 0 1 5 0h6c.199 0 .389.079.53.22l4.25 4.25c.141.14.22.331.22.53v6a.749.749 0 0 1-.22.53l-4.25 4.25A.749.749 0 0 1 11 16H5a.749.749 0 0 1-.53-.22L.22 11.53A.749.749 0 0 1 0 11V5c0-.199.079-.389.22-.53Zm.84 1.28L1.5 5.31v5.38l3.81 3.81h5.38l3.81-3.81V5.31L10.69 1.5ZM8 4a.75.75 0 0 1 .75.75v3.5a.75.75 0 0 1-1.5 0v-3.5A.75.75 0 0 1 8 4Zm0 8a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z',
};