const anchor_regex = /<a\s+([^>]*)href=['"]([^'"]+)['"]([^>]*)>/gi;

export function api(rel_path){
    return `${location.protocol}//${location.host.replace('5173','8080')}/api/${rel_path}`;
}

export function get(url){
    return fetch(url,{ credentials:'include' });
}

export function drop(url){
    return fetch(url,{
        credentials:'include',
        method:'DELETE'
    });
}

export function eventStream(createHandler,updateHandler,deleteHandler){
	const es = new EventSource(api('bus'), {withCredentials: true});
	if (createHandler) es.addEventListener('CREATE', createHandler);
	if (updateHandler) es.addEventListener('UPDATE', updateHandler);
	if (deleteHandler) es.addEventListener('DELETE', deleteHandler);
	return es;
}

export function patch(url,data){
    return fetch(url,{
        credentials : 'include',
        method      : 'PATCH',
        body        : JSON.stringify(data)
    });
}

export function post(url,data){
    return fetch(url,{
        credentials : 'include',
        method      : 'POST',
        body        : JSON.stringify(data)
    });
}

export function target(code){
    if (!code) return null;
    let altered = code;

    let match;
    while(match = anchor_regex.exec(code)) {
        const orig = match[0];
        const href = match[2];
        if (orig.includes('target=')) continue; // if there is already a target: skip
        if (!href.includes('://')) continue; // if this is a relative path: skip
        const anchor = '<a target="_blank" '+orig.substring(3);
        altered = altered.replaceAll(orig,anchor);
    }

    return altered;
}