// ==UserScript==
// @name         cda.pl, vimeo - lista wideo w folderze i wyszukiwarce
// @namespace    http://tampermonkey.net/
// @version      0.3
// @description  Pokazuje listę linków do filmów z wszystkich stron danego folderu (ale nie w podfolderach) lub wyniku wyszukiwania (bez folderów). Linki nie prowadzą bezpośrednio do filmu, lecz do jego strony.
// @author       Dove6
// @include      https://www.cda.pl/*/folder*
// @include      https://www.cda.pl/info/*?section=video
// @include      https://www.cda.pl/video/show/*
// @include      https://vimeo.com/search*
// @grant        none
// @downloadURL none
// ==/UserScript==

/* jshint esversion: 6 */
(function() {
    'use strict';
    
    const dom_parser = new DOMParser();

    class SiteLinksFetcher {
        setReachedEnd(direction) {
            this.reached_end[direction] = true;
            if (this.reached_end.left && this.reached_end.right) {
                this.callback(this.links);
            }
        }
        callback(links) {
            console.log(links.join(' '));
        }

        constructor(folder_url, callback = null) {
            this.links = [];
            this.reached_end = {'left': false, 'right': false};
            this.folder_url = folder_url;
            if (callback !== null) {
                this.callback = callback;
            }
            this.reached_end.callback = this.callback;
        }
        fetchLinks(folder_url = this.folder_url, direction = null) {
            throw new Error('This method is abstract');
        }
        static createButton(name) {
            let s = document.createElement('span');
            s.class = 'fetch-links-button';
            s.innerHTML = name;
            s.style.border = '2px solid green';
            s.style.borderRadius = '2px';
            s.style.padding = '5px';
            s.style.margin = '10px';
            s.style.fontWeight = 'bold';
            s.style.cursor = 'pointer';
            return s;
        }
    }

    class CDALinksFetcher extends SiteLinksFetcher {
        fetchLinks(folder_url = this.folder_url, direction = null) {
            fetch(folder_url).then(
                (result) => {
                    let fetched_page = result.text().then(
                        (result_text) => {
                            let fetched_DOM = dom_parser.parseFromString(result_text, 'text/html');
                            this.links = this.links.concat(this.getLinksFromDOM(fetched_DOM));
                            let buttons = {
                                'next': this.getNextPageFromDOM(fetched_DOM),
                                'previous': this.getPreviousPageFromDOM(fetched_DOM)
                            };
                            if (direction === 'right' || direction === null) {
                                if (buttons.next !== undefined && buttons.next !== null) {
                                    console.log('Next page: ' + buttons.next.href);
                                    this.fetchLinks(buttons.next.href, 'right');
                                } else {
                                    this.setReachedEnd('right');
                                }
                            }
                            if (direction === 'left' || direction === null) {
                                if (buttons.previous !== undefined && buttons.previous !== null) {
                                    console.log('Previous page: ' + buttons.previous.href);
                                    this.fetchLinks(buttons.previous.href, 'left');
                                } else {
                                    this.setReachedEnd('left');
                                }
                            }
                        }
                    );
                }
            );
        }
        getLinksFromDOM(dom) {
            throw new Error('This method is abstract');
        }
        getNextPageFromDOM(dom) {
            throw new Error('This method is abstract');
        }
        getPreviousPageFromDOM(dom) {
            throw new Error('This method is abstract');
        }
        static createButton(name) {
            let s = super.createButton(name);
            s.style.backgroundColor = 'black';
            return s;
        }
    }

    class CDASearchLinksFetcher extends CDALinksFetcher {
        getLinksFromDOM(dom) {
            return Array.from(dom.querySelectorAll('.text.text-video > .link-title-visit')).map(function(e) {
                return e.href;
            });
        }
        getNextPageFromDOM(dom) {
            return dom.querySelectorAll('.btnRed.sbmNext')[0];
        }
        getPreviousPageFromDOM(dom) {
            return dom.querySelectorAll('.btnRed.sbmPrev')[0];
        }
        static createButton(url, callback = null, name = 'Pobierz linki') {
            let s = super.createButton(name);
            s.onclick = function() {
                if (document.getElementsByClassName('fetch-links-result').length === 0) {
                    let links_getter = new CDASearchLinksFetcher(url, callback);
                    links_getter.fetchLinks();
                }
            };
            return s;
        }
    }

    class CDAFolderLinksFetcher extends CDALinksFetcher {
        getLinksFromDOM(dom) {
            return Array.from(dom.getElementsByClassName('link-title-visit')).map(function(e) {
                return e.href;
            });
        }
        getNextPageFromDOM(dom) {
            return dom.getElementsByClassName('next')[0];
        }
        getPreviousPageFromDOM(dom) {
            return dom.getElementsByClassName('previous')[0];
        }
        static createButton(url, callback = null, name = 'Pobierz linki') {
            let s = super.createButton(name);
            s.onclick = function() {
                if (document.getElementsByClassName('fetch-links-result').length === 0) {
                    let links_getter = new CDAFolderLinksFetcher(url, callback);
                    links_getter.fetchLinks();
                }
            };
            return s;
        }
    }

    class VimeoLinksFetcher extends SiteLinksFetcher {
        fetchLinks(folder_url = this.folder_url, direction = null) {
            fetch(folder_url).then(
                (result) => {
                    let fetched_page = result.text().then(
                        (result_text) => {
                            let fetched_JSON = JSON.parse(result_text.match(/var data \= (.+?);/)[1]);
                            this.links = this.links.concat(this.getLinksFromJSON(fetched_JSON));
                            let pagination = {
                                'next': this.getNextPageFromJSON(fetched_JSON),
                                'previous': this.getPreviousPageFromJSON(fetched_JSON)
                            };
                            if (direction === 'right' || direction === null) {
                                if (pagination.next !== undefined && pagination.next !== null) {
                                    console.log('Next page: ' + pagination.next);
                                    this.fetchLinks(pagination.next, 'right');
                                } else {
                                    this.setReachedEnd('right');
                                }
                            }
                            if (direction === 'left' || direction === null) {
                                if (pagination.previous !== undefined && pagination.previous !== null) {
                                    console.log('Previous page: ' + pagination.previous);
                                    this.fetchLinks(pagination.previous, 'left');
                                } else {
                                    this.setReachedEnd('left');
                                }
                            }
                        }
                    );
                }
            );
        }
        getLinksFromJSON(json) {
            throw new Error('This method is abstract');
        }
        getNextPageFromJSON(json) {
            throw new Error('This method is abstract');
        }
        getPreviousPageFromJSON(json) {
            throw new Error('This method is abstract');
        }
        static createButton(url, callback = null, name = 'Pobierz linki') {
            let s = super.createButton(name);
            s.style.color = '#456';
            s.style.backgroundColor = '#efe';
            return s;
        }
    }

    class VimeoSearchLinksFetcher extends VimeoLinksFetcher {
        getLinksFromJSON(json) {
            return json.filtered.data.map(function(e) {
                return e.clip.link;
            });
        }
        getNextPageFromJSON(json) {
            if (json.filtered.paging.next !== undefined && json.filtered.paging.next !== null) {
                let params_to_update = new URLSearchParams(json.filtered.paging.next);
                let destination_url = new URL(location.href);
                let destination_params = destination_url.searchParams;
                for (let pair of params_to_update) {
                    destination_params.set(pair[0], pair[1]);
                }
                destination_url.search = destination_params.toString();
                return destination_url.toString();
            } else {
                return json.filtered.paging.next;
            }
        }
        getPreviousPageFromJSON(json) {
            if (json.filtered.paging.previous !== undefined && json.filtered.paging.previous !== null) {
                let params_to_update = new URLSearchParams(json.filtered.paging.previous);
                let destination_url = new URL(location.href);
                let destination_params = destination_url.searchParams;
                for (let pair of params_to_update) {
                    destination_params.set(pair[0], pair[1]);
                }
                destination_url.search = destination_params.toString();
                return destination_url.toString();
            } else {
                return json.filtered.paging.previous;
            }
        }
        static createButton(url, callback = null, name = 'Pobierz linki') {
            let s = super.createButton(name);
            s.onclick = function() {
                if (document.getElementsByClassName('fetch-links-result').length === 0) {
                    let links_getter = new VimeoSearchLinksFetcher(url, callback);
                    links_getter.fetchLinks();
                }
            };
            return s;
        }
    }

    if ((/vimeo\.com\/search/).test(location.href)) { //Vimeo search
        if (document.getElementsByClassName('fetch-links-button').length === 0 && document.getElementsByClassName('iris_link-box').length > 0) {
            let parent_div = document.querySelector('.header_region');
            if (parent_div !== null) {
                let result_div = document.createElement('div');
                result_div.style.border = '2px solid gray';
                result_div.style.borderRadius = '5px';
                result_div.style.padding = '5px';
                result_div.style.margin = '10px';
                result_div.fontFamily = 'monospace';
                result_div.style.display = 'none';
                parent_div.insertBefore(result_div, parent_div.children[1]);

                parent_div.insertBefore(VimeoSearchLinksFetcher.createButton(location.href, function(links) {
                    result_div.innerHTML = links.join(' ');
                    result_div.style.display = 'block';
                }), result_div);
            }
        }
    } else if ((/cda\.pl\/.+\/folder/).test(location.href)) { //cda folder
        if (document.getElementsByClassName('fetch-links-button').length === 0 && document.getElementsByClassName('link-title-visit').length > 0) {
            let parent_div = document.querySelector('#folder-replace .panel-body');
            if (parent_div !== null) {
                let result_div = document.createElement('div');
                result_div.style.border = '2px solid gray';
                result_div.style.borderRadius = '5px';
                result_div.style.padding = '5px';
                result_div.style.margin = '10px';
                result_div.style.backgroundColor = 'black';
                result_div.fontFamily = 'monospace';
                result_div.style.display = 'none';
                parent_div.insertBefore(result_div, parent_div.children[1]);

                parent_div.insertBefore(CDAFolderLinksFetcher.createButton(location.href, function(links) {
                    result_div.innerHTML = links.join(' ');
                    result_div.style.display = 'block';
                }), result_div);
            }
        }
    } else if ((/cda\.pl\/info\/.+\?section\=video/).test(location.href)) { //cda general search
        if (document.getElementsByClassName('fetch-links-button').length === 0 && document.querySelectorAll('.text-video > .link-title-visit').length) {
            let sought_phrase = location.href.match(/cda\.pl\/info\/(.+)\?section\=video/)[1];
            if (sought_phrase === null || sought_phrase === undefined) {
                throw new Error('Error getting the sought phrase from link');
            }
            let video_search_link = 'https://www.cda.pl/video/show/' + sought_phrase;

            let parent_div = document.querySelector('.nogry.nogiwera.nodownload.video .bttn-grp-const-width-md');
            if (parent_div !== null) {
                let intermediate_div = document.createElement('div');
                intermediate_div.style.position = 'absolute';
                intermediate_div.style.margin = '5px 0';
                parent_div.insertBefore(intermediate_div, parent_div.children[0]);

                let result_div = document.createElement('div');
                result_div.class = 'fetch-links-result';
                result_div.style.border = '2px solid gray';
                result_div.style.borderRadius = '5px';
                result_div.style.padding = '5px';
                result_div.style.margin = '10px';
                result_div.style.backgroundColor = 'black';
                result_div.fontFamily = 'monospace';
                result_div.style.display = 'none';
                result_div.style.textAlign = 'left';
                parent_div.appendChild(result_div);

                intermediate_div.appendChild(CDASearchLinksFetcher.createButton(video_search_link, function(links) {
                    result_div.innerHTML = links.join(' ');
                    result_div.style.display = 'block';
                }), result_div);
            }
        }
    } else if ((/cda\.pl\/video\/show/).test(location.href)) { //cda video search
        if (document.getElementsByClassName('fetch-links-button').length === 0 && document.querySelectorAll('.text-video > .link-title-visit').length) {
            let parent_div = document.querySelector('.bttn-grp-const-width-md');
            if (parent_div !== null) {
                let intermediate_div = document.createElement('div');
                intermediate_div.style.position = 'absolute';
                intermediate_div.style.margin = '5px 0';
                parent_div.insertBefore(intermediate_div, parent_div.children[0]);

                let result_div = document.createElement('div');
                result_div.class = 'fetch-links-result';
                result_div.style.border = '2px solid gray';
                result_div.style.borderRadius = '5px';
                result_div.style.padding = '5px';
                result_div.style.margin = '10px';
                result_div.style.backgroundColor = 'black';
                result_div.fontFamily = 'monospace';
                result_div.style.display = 'none';
                result_div.style.textAlign = 'left';
                parent_div.appendChild(result_div);

                intermediate_div.appendChild(CDASearchLinksFetcher.createButton(location.href, function(links) {
                    result_div.innerHTML = links.join(' ');
                    result_div.style.display = 'block';
                }), result_div);
            }
        }
    }

})();