import nanoid from './nanoid.min.js';

const api_stub = {};

// for mocking persistent state, for use by the fake endpoints, just as a real server endpoint would have DB access for state:
const state = {
  notes: [
    {id: nanoid(), text: 'Note one', modified: Date.now()},
    {id: nanoid(), text: 'Note two', modified: Date.now()},
    {id: nanoid(), text: 'Note three', modified: Date.now()}
    ]
  };

const endpoints = {
  post: {}
  };

endpoints.post['/load-notes'] = function(resolve, reject, body){
  resolve( {status: 'ok', notes: state.notes} );
  };

endpoints.post['/search'] = function(resolve, reject, body){
  const notes = state.notes.filter(n => n.text.indexOf(body.search_term) !== -1 )
  if(body.sorting==='new->old'){
    notes.sort((a,b) => a.modified-b.modified);
    }
  else{
    notes.sort((a,b) => b.modified-a.modified);
    }
  resolve( {status: 'ok', notes} );
  };

endpoints.post['/save'] = function(resolve, reject, body){
  const {note_id, text} = body;
  const note = state.notes.find( n => n.id===note_id );
  if(note){
    note.text = text;
    note.modified = Date.now();
    }
  else{
    state.notes.push({id: note_id, text, modified: Date.now()});
    }
  resolve( {status: 'ok'} );
  };



api_stub.post = function(url, body){
  if(endpoints.post[url]){
    return new Promise((resolve, reject)=>{
      endpoints.post[url](resolve, reject, body);
      });
    }
  else{
    return new Promise((resolve, reject)=>{
      reject( {error: 'no such endpoint'} );
      });
    }
  };

export default api_stub;