import useDatabase from '~/composables/useDatabase';
import { Navigation } from '~/types/api';

type NavigatioNExtension = Navigation & { owner: number, navigable: boolean };

export default defineEventHandler(async (e) => {
    const project = getRouterParam(e, "projectId");
    const { user } = await getUserSession(e);

    if(!project)
    {
        setResponseStatus(e, 404);
        return;
    }

    const db = useDatabase();

    const content = db.query(`SELECT "path", "title", "type", "order", "private", "navigable", "owner" FROM explorer_files`).sort((a: any, b: any) => a.path.length - b.path.length) as NavigatioNExtension[];

    if(content.length > 0)
    {
        const navigation: Navigation[] = [];

        for(const idx in content)
        {
            const item = content[idx];
            if(!!item.private && (user?.id ?? -1) !== item.owner || !item.navigable)
            {
                delete content[idx];
                continue;
            }
            
            const parent = item.path.includes('/') ? item.path.substring(0, item.path.lastIndexOf('/')) : undefined;

            if(parent && !content.find(e => e && e.path === parent))
            {
                delete content[idx];
                continue;
            }
        }
        for(const item of content.filter(e => !!e))
        {
            addChild(navigation, item);
        }

        return navigation;
    }
    
    setResponseStatus(e, 404);
});

function addChild(arr: Navigation[], e: Navigation): void
{
    const parent = arr.find(f => e.path.startsWith(f.path));

    if(parent)
    {
        if(!parent.children)
            parent.children = [];

        addChild(parent.children, e);
    }
    else
    {
        arr.push({ title: e.title, path: e.path, type: e.type, order: e.order, private: e.private });
        arr.sort((a, b) => {
            if(a.order && b.order)
                return a.order - b.order;
            return a.title.localeCompare(b.title);
        });
    }
}