// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
// See License.txt for license information.

var AppDispatcher = require('../dispatcher/app_dispatcher.jsx');
var EventEmitter = require('events').EventEmitter;
var assign = require('object-assign');

var ChannelStore = require('../stores/channel_store.jsx');
var BrowserStore = require('../stores/browser_store.jsx');

var Constants = require('../utils/constants.jsx');
var ActionTypes = Constants.ActionTypes;

var CHANGE_EVENT = 'change';
var SEARCH_CHANGE_EVENT = 'search_change';
var SEARCH_TERM_CHANGE_EVENT = 'search_term_change';
var SELECTED_POST_CHANGE_EVENT = 'selected_post_change';
var MENTION_DATA_CHANGE_EVENT = 'mention_data_change';
var ADD_MENTION_EVENT = 'add_mention';

var PostStore = assign({}, EventEmitter.prototype, {

    emitChange: function emitChange() {
        this.emit(CHANGE_EVENT);
    },

    addChangeListener: function addChangeListener(callback) {
        this.on(CHANGE_EVENT, callback);
    },

    removeChangeListener: function removeChangeListener(callback) {
        this.removeListener(CHANGE_EVENT, callback);
    },

    emitSearchChange: function emitSearchChange() {
        this.emit(SEARCH_CHANGE_EVENT);
    },

    addSearchChangeListener: function addSearchChangeListener(callback) {
        this.on(SEARCH_CHANGE_EVENT, callback);
    },

    removeSearchChangeListener: function removeSearchChangeListener(callback) {
        this.removeListener(SEARCH_CHANGE_EVENT, callback);
    },

    emitSearchTermChange: function emitSearchTermChange(doSearch, isMentionSearch) {
        this.emit(SEARCH_TERM_CHANGE_EVENT, doSearch, isMentionSearch);
    },

    addSearchTermChangeListener: function addSearchTermChangeListener(callback) {
        this.on(SEARCH_TERM_CHANGE_EVENT, callback);
    },

    removeSearchTermChangeListener: function removeSearchTermChangeListener(callback) {
        this.removeListener(SEARCH_TERM_CHANGE_EVENT, callback);
    },

    emitSelectedPostChange: function emitSelectedPostChange(fromSearch) {
        this.emit(SELECTED_POST_CHANGE_EVENT, fromSearch);
    },

    addSelectedPostChangeListener: function addSelectedPostChangeListener(callback) {
        this.on(SELECTED_POST_CHANGE_EVENT, callback);
    },

    removeSelectedPostChangeListener: function removeSelectedPostChangeListener(callback) {
        this.removeListener(SELECTED_POST_CHANGE_EVENT, callback);
    },

    emitMentionDataChange: function emitMentionDataChange(id, mentionText) {
        this.emit(MENTION_DATA_CHANGE_EVENT, id, mentionText);
    },

    addMentionDataChangeListener: function addMentionDataChangeListener(callback) {
        this.on(MENTION_DATA_CHANGE_EVENT, callback);
    },

    removeMentionDataChangeListener: function removeMentionDataChangeListener(callback) {
        this.removeListener(MENTION_DATA_CHANGE_EVENT, callback);
    },

    emitAddMention: function emitAddMention(id, username) {
        this.emit(ADD_MENTION_EVENT, id, username);
    },

    addAddMentionListener: function addAddMentionListener(callback) {
        this.on(ADD_MENTION_EVENT, callback);
    },

    removeAddMentionListener: function removeAddMentionListener(callback) {
        this.removeListener(ADD_MENTION_EVENT, callback);
    },

    getCurrentPosts: function getCurrentPosts() {
        var currentId = ChannelStore.getCurrentId();

        if (currentId != null) {
            return this.getPosts(currentId);
        }
        return null;
    },
    storePosts: function storePosts(channelId, posts) {
        this.pStorePosts(channelId, posts);
        this.emitChange();
    },
    pStorePosts: function pStorePosts(channelId, posts) {
        BrowserStore.setItem('posts_' + channelId, posts);
    },
    getPosts: function getPosts(channelId) {
        return BrowserStore.getItem('posts_' + channelId);
    },
    storeSearchResults: function storeSearchResults(results, isMentionSearch) {
        BrowserStore.setItem('search_results', results);
        BrowserStore.setItem('is_mention_search', Boolean(isMentionSearch));
    },
    getSearchResults: function getSearchResults() {
        return BrowserStore.getItem('search_results');
    },
    getIsMentionSearch: function getIsMentionSearch() {
        return BrowserStore.getItem('is_mention_search');
    },
    storeSelectedPost: function storeSelectedPost(postList) {
        BrowserStore.setItem('select_post', postList);
    },
    getSelectedPost: function getSelectedPost() {
        return BrowserStore.getItem('select_post');
    },
    storeSearchTerm: function storeSearchTerm(term) {
        BrowserStore.setItem('search_term', term);
    },
    getSearchTerm: function getSearchTerm() {
        return BrowserStore.getItem('search_term');
    },
    storeCurrentDraft: function storeCurrentDraft(draft) {
        var channelId = ChannelStore.getCurrentId();
        BrowserStore.setItem('draft_' + channelId, draft);
    },
    getCurrentDraft: function getCurrentDraft() {
        var channelId = ChannelStore.getCurrentId();
        return BrowserStore.getItem('draft_' + channelId);
    },
    storeDraft: function storeDraft(channelId, draft) {
        BrowserStore.setItem('draft_' + channelId, draft);
    },
    getDraft: function getDraft(channelId) {
        return BrowserStore.getItem('draft_' + channelId);
    },
    storeCommentDraft: function storeCommentDraft(parentPostId, draft) {
        BrowserStore.setItem('comment_draft_' + parentPostId, draft);
    },
    getCommentDraft: function getCommentDraft(parentPostId) {
        return BrowserStore.getItem('comment_draft_' + parentPostId);
    },
    clearDraftUploads: function clearDraftUploads() {
        BrowserStore.actionOnItemsWithPrefix('draft_', function clearUploads(key, value) {
            if (value) {
                value.uploadsInProgress = [];
                BrowserStore.setItem(key, value);
            }
        });
    },
    clearCommentDraftUploads: function clearCommentDraftUploads() {
        BrowserStore.actionOnItemsWithPrefix('comment_draft_', function clearUploads(key, value) {
            if (value) {
                value.uploadsInProgress = [];
                BrowserStore.setItem(key, value);
            }
        });
    }
});

PostStore.dispatchToken = AppDispatcher.register(function registry(payload) {
    var action = payload.action;

    switch (action.type) {
        case ActionTypes.RECIEVED_POSTS:
            PostStore.pStorePosts(action.id, action.post_list);
            PostStore.emitChange();
            break;
        case ActionTypes.RECIEVED_SEARCH:
            PostStore.storeSearchResults(action.results, action.is_mention_search);
            PostStore.emitSearchChange();
            break;
        case ActionTypes.RECIEVED_SEARCH_TERM:
            PostStore.storeSearchTerm(action.term);
            PostStore.emitSearchTermChange(action.do_search, action.is_mention_search);
            break;
        case ActionTypes.RECIEVED_POST_SELECTED:
            PostStore.storeSelectedPost(action.post_list);
            PostStore.emitSelectedPostChange(action.from_search);
            break;
        case ActionTypes.RECIEVED_MENTION_DATA:
            PostStore.emitMentionDataChange(action.id, action.mention_text);
            break;
        case ActionTypes.RECIEVED_ADD_MENTION:
            PostStore.emitAddMention(action.id, action.username);
            break;
        default:
    }
});

module.exports = PostStore;
