import { isServer } from '@tanstack/router-core/isServer';
import { createEffect } from 'solid-js';
import { useRouter } from './useRouter';
export function Asset({ tag, attrs, children, }) {
    switch (tag) {
        case 'title':
            return <Title attrs={attrs} children={children}/>;
        case 'meta':
            return <meta {...attrs}/>;
        case 'link':
            return <link {...attrs}/>;
        case 'style':
            if (typeof children === 'string') {
                return <style {...attrs} innerHTML={children}/>;
            }
            return <style {...attrs}/>;
        case 'script':
            return <Script attrs={attrs} children={children}/>;
        default:
            return null;
    }
}
function Title(props) {
    const router = useRouter();
    const attrs = props.attrs;
    const children = props.children;
    // Server: render <title> normally
    if (isServer ?? router.isServer) {
        return <title {...attrs}>{children}</title>;
    }
    // Client: imperatively set document.title so it updates during
    // client-side navigation (JSX <title> in <head> doesn't reliably
    // update the browser's document.title).
    createEffect(() => children, (titleText) => {
        document.title = typeof titleText === 'string' ? titleText : '';
    });
    // Still render the <title> element in the DOM for consistency,
    // but the imperative assignment above is what actually drives the update.
    return <title {...attrs}>{children}</title>;
}
function Script(props) {
    const router = useRouter();
    const attrs = props.attrs;
    const children = props.children;
    const dataScript = typeof attrs?.type === 'string' &&
        attrs.type !== '' &&
        attrs.type !== 'text/javascript' &&
        attrs.type !== 'module';
    // --- Server rendering ---
    if (isServer ?? router.isServer) {
        if (attrs?.src) {
            return <script {...attrs}/>;
        }
        if (typeof children === 'string') {
            return <script {...attrs} innerHTML={children}/>;
        }
        return null;
    }
    // --- Client rendering ---
    // Data scripts (e.g. application/ld+json) are rendered in the tree;
    // they don't need to execute.
    if (dataScript && typeof children === 'string') {
        return <script {...attrs} innerHTML={children}/>;
    }
    // For executable scripts, use imperative DOM injection so the browser
    // actually executes them during client-side navigation.
    createEffect(() => ({ attrs, children, dataScript }), ({ attrs, children, dataScript }) => {
        if (dataScript)
            return;
        let script;
        if (attrs?.src) {
            const normSrc = (() => {
                try {
                    const base = document.baseURI || window.location.href;
                    return new URL(attrs.src, base).href;
                }
                catch {
                    return attrs.src;
                }
            })();
            const existingScript = Array.from(document.querySelectorAll('script[src]')).find((el) => el.src === normSrc);
            if (existingScript) {
                return;
            }
            script = document.createElement('script');
            for (const [key, value] of Object.entries(attrs)) {
                if (value !== undefined && value !== false) {
                    script.setAttribute(key, typeof value === 'boolean' ? '' : String(value));
                }
            }
            document.head.appendChild(script);
        }
        else if (typeof children === 'string') {
            const typeAttr = typeof attrs?.type === 'string' ? attrs.type : 'text/javascript';
            const nonceAttr = typeof attrs?.nonce === 'string' ? attrs.nonce : undefined;
            const existingScript = Array.from(document.querySelectorAll('script:not([src])')).find((el) => {
                if (!(el instanceof HTMLScriptElement))
                    return false;
                const sType = el.getAttribute('type') ?? 'text/javascript';
                const sNonce = el.getAttribute('nonce') ?? undefined;
                return (el.textContent === children &&
                    sType === typeAttr &&
                    sNonce === nonceAttr);
            });
            if (existingScript) {
                return;
            }
            script = document.createElement('script');
            script.textContent = children;
            if (attrs) {
                for (const [key, value] of Object.entries(attrs)) {
                    if (value !== undefined && value !== false) {
                        script.setAttribute(key, typeof value === 'boolean' ? '' : String(value));
                    }
                }
            }
            document.head.appendChild(script);
        }
        return () => {
            if (script?.parentNode) {
                script.parentNode.removeChild(script);
            }
        };
    });
    return null;
}
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