import { DataBrowserContext, PaneRegistry } from "pane-registry";

import  { Statement, LiveStore } from "rdflib";
import { ns, store, rdf } from "solid-ui"
export { ns, store, rdf } from "solid-ui"

import { SolidLogic } from "solid-logic";

// console.log('@@ store', store)
// console.log('@@ store.sym', store.sym)

export const subject = store.sym("https://janedoe.example/profile/card#me");
export const doc = subject.doc();

export const context = {
    dom: document,
    getOutliner: () => null,
    session: {
        paneRegistry: {
            byName: (name: string) => {
                return {
                    render: () => {
                        return document.createElement('div')
                            .appendChild(
                                document.createTextNode(`mock ${name} pane`)
                            );
                    }
                }
            }
        } as PaneRegistry,
        store,
        logic: {} as SolidLogic,
    },
} as unknown as DataBrowserContext;

const  prefs = Object.keys(ns).filter(x => x !== 'default') // default is bogus value
export const prefixes = prefs.map(prefix => `@prefix ${prefix}: ${ns[prefix]('')}.\n`).join('') // In turtle

export let web = {}
export let requests = []

export async function mockFetchFunction (req) {
    if (req.method !== 'GET') {
        requests.push(req)
        if (req.method === 'PUT') {
            const contents = await req.text()
            web[req.url] = contents // Update our dummy web
            console.log(`Tetst: Updated ${req.url} on PUT to <<<${web[req.url]}>>>`)
        }
        return { status: 200 }
    }
    const contents = web[req.url]
    if (contents !== undefined) { //
        return {
            body: prefixes + contents, // Add namespaces to anything
            status: 200,
            headers: {
                "Content-Type": "text/turtle",
                "WAC-Allow": 'user="write", public="read"',
                "Accept-Patch": "application/sparql-update"
            }
        }
    } // if contents
    return {
        status: 404,
        body: 'Not Found'
    }
}

export function mockUpdate (store: LiveStore, del: Statement[], ins: Statement[]) {
  for (const st of del) {
    store.remove(st)
  }
  for (const st of ins) {
    store.addStatement(st)
  }
}