Injects ChoicescriptIDE/ChoiceScriptSavePlugin into any CoG games. https://www.reddit.com/r/choiceofgames/comments/ovo3eh/choicescriptsaveplugininjector_add_save_system_to/

ChoiceScriptSavePluginInjector.user.js

/**
 * ChoiceScriptSavePluginInjector
 *
 * ---
 *
 * Licensed under the MIT License.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * ---
 *
 * ChoiceScriptSavePlugin by CJW (ChoiceScriptIDE):
 * https://github.com/ChoicescriptIDE/ChoiceScriptSavePlugin,
 * https://forum.choiceofgames.com/t/choicescript-saving-plugin-update-sept-2019/983
 *
 */

// ==UserScript==
// @name         ChoiceScriptSavePluginInjector
// @author       AbrahamAriel
// @description  Injects ChoicescriptIDE/ChoiceScriptSavePlugin into any CoG games. Includes extended functions such as exporting and importing saves.
// @version      1.9.1
// @license      MIT
// @namespace    https://gist.github.com/AbrahamAriel/7a8d7cea1d8cbcd82700d67a09942a47
// @downloadURL  https://gist.githubusercontent.com/AbrahamAriel/7a8d7cea1d8cbcd82700d67a09942a47/raw/ChoiceScriptSavePluginInjector.user.js
// @updateURL    https://gist.githubusercontent.com/AbrahamAriel/7a8d7cea1d8cbcd82700d67a09942a47/raw/ChoiceScriptSavePluginInjector.user.js
// @homepage     https://www.reddit.com/r/choiceofgames/comments/ovo3eh/choicescriptsaveplugininjector_add_save_system_to/
// @match        http://choiceofgames.com/*
// @match        https://choiceofgames.com/*
// @match        http://www.choiceofgames.com/*
// @match        https://www.choiceofgames.com/*
// @match        http://choiceofgames.com/user-contributed/*
// @match        https://choiceofgames.com/user-contributed/*
// @match        http://www.choiceofgames.com/user-contributed/*
// @match        https://www.choiceofgames.com/user-contributed/*
// @exclude      http://www.choiceofgames.com/category/*
// @exclude      https://www.choiceofgames.com/category/*
// @exclude      http://www.choiceofgames.com/profile/*
// @exclude      https://www.choiceofgames.com/profile/*
// @exclude      http://www.choiceofgames.com/blog/*
// @exclude      https://www.choiceofgames.com/blog/*
// @exclude      http://www.choiceofgames.com/api/*
// @exclude      https://www.choiceofgames.com/api/*
// @exclude      http://www.choiceofgames.com/about-us/*
// @exclude      https://www.choiceofgames.com/about-us/*
// @exclude      http://www.choiceofgames.com/contact-us/*
// @exclude      https://www.choiceofgames.com/contact-us/*
// @exclude      http://www.choiceofgames.com/privacy-policy/*
// @exclude      https://www.choiceofgames.com/privacy-policy/*
// @exclude      http://www.choiceofgames.com/looking-for-writers/*
// @exclude      https://www.choiceofgames.com/looking-for-writers/*
// @exclude      http://www.choiceofgames.com/make-your-own-games/*
// @exclude      https://www.choiceofgames.com/make-your-own-games/*
// @exclude      http://choiceofgames.com/category/*
// @exclude      https://choiceofgames.com/category/*
// @exclude      http://choiceofgames.com/profile/*
// @exclude      https://choiceofgames.com/profile/*
// @exclude      http://choiceofgames.com/blog/*
// @exclude      https://choiceofgames.com/blog/*
// @exclude      http://choiceofgames.com/api/*
// @exclude      https://choiceofgames.com/api/*
// @exclude      http://choiceofgames.com/about-us/*
// @exclude      https://choiceofgames.com/about-us/*
// @exclude      http://choiceofgames.com/contact-us/*
// @exclude      https://choiceofgames.com/contact-us/*
// @exclude      http://choiceofgames.com/privacy-policy/*
// @exclude      https://choiceofgames.com/privacy-policy/*
// @exclude      http://choiceofgames.com/looking-for-writers/*
// @exclude      https://choiceofgames.com/looking-for-writers/*
// @exclude      http://choiceofgames.com/make-your-own-games/*
// @exclude      https://choiceofgames.com/make-your-own-games/*
// @run-at       document-start
// @grant        GM_getResourceText
// @resource     ChoiceScriptSavePlugin https://cdn.jsdelivr.net/gh/AbrahamAriel/ChoiceScriptSavePlugin@latest/ChoiceScriptSavePlugin.js
// ==/UserScript==

(function() {
    'use strict';

    var savePluginScriptTag = document.createElement('script');
    savePluginScriptTag.setAttribute('id', 'choice-script-save-plugin-injector');

    const savePluginElement = Object.assign(
        savePluginScriptTag, {
            type: 'text/javascript',
            innerHTML: GM_getResourceText('ChoiceScriptSavePlugin')
        }
    );

    const navigatorScript = /(navigator\.js)/;
    const mygame = /(mygame\.js)/;

    const navigatorObserver = new MutationObserver((records) => {
        records.forEach((mutation) => {
            Array.prototype.forEach.call(mutation.addedNodes, (node) => {
                if (node.tagName === "SCRIPT") {
                    if (navigatorScript.test(node.src)) {
                        try {
                            node.after(savePluginElement);
                            navigatorObserver.disconnect();
                        } catch (error) {
                            console.error('ChoiceScriptSavePluginInjector: Failed to inject save plugin!', error);
                        }
                    }
                }
            });
        });
    });

    navigatorObserver.observe(document.head, {
        subtree: true,
        childList: true,
        attributes: true,
        attributesFilter: ['src'],
        characterData: false,
    });

    document.addEventListener("DOMContentLoaded", (event) => {
        /** 
         * Stops MutationObserver after 5 seconds.
         * To prevent it from hogging unnecessary resources.
         */

        setTimeout(() => {
            console.debug('ChoiceScriptSavePluginInjector: Stopping MutationObserver... Plugin should be loaded by now.');

            navigatorObserver.disconnect();

            // -- Extended save functions --

            const createExportAllSavesBtn = () => {
                const parentElement = document.getElementById('menuButton').parentElement;
                const choiceScriptSavePluginElement = document.getElementById('choice-script-save-plugin-injector');

                const exportAllSavesAsJsonFile = () => {
                    ChoiceScriptSavePlugin._getSaveList(async (saveList) => {
                        if (!saveList) {
                            console.debug('ChoiceScriptSavePluginInjector: No saves found');
                            return;
                        }

                        var promises = {};

                        for (const saveId of saveList) {
                            promises[saveId] = new Promise((resolve, reject) => {
                                ChoiceScriptSavePlugin._getSaveData(saveId, (saveData) => {
                                    if (!saveData) {
                                        console.debug('ChoiceScriptSavePluginInjector: No save data found for save', saveId);
                                        reject(`ChoiceScriptSavePluginInjector: No save data found for save ${saveId}`);
                                    }

                                    console.debug(`ChoiceScriptSavePluginInjector: Exporting save ${saveId}...`, saveData);

                                    resolve(saveData);
                                });
                            });
                        }

                        const result = await Promise.allSettled(Object.values(promises));

                        if (result.length === 0) {
                            console.debug('ChoiceScriptSavePluginInjector: No saves found');
                            return;
                        }

                        console.debug(`ChoiceScriptSavePluginInjector: Promises resolved for ${result.length} saves...`, result);

                        for (const save of result) {
                            if (save.status === 'rejected') {
                                console.debug('ChoiceScriptSavePluginInjector: Failed to export save', save.reason);
                            }
                        }

                        const allSaves = result.filter((save) => save.status === 'fulfilled').map((save) => save.value);

                        console.debug(`ChoiceScriptSavePluginInjector: Exporting ${allSaves.length} saves...`, allSaves);

                        const saveName = 'all_saves';
                        const choiceTitle = (allSaves[0].stats.choice_title).replace(/\s+/g, '_').toLowerCase();
                        const json = JSON.stringify(allSaves);

                        console.debug('ChoiceScriptSavePluginInjector: Exporting all saves as JSON file...');
                        console.debug(`ChoiceScriptSavePluginInjector: Choice title: ${choiceTitle}`);

                        const blob = new Blob([json], { type: 'application/json' });

                        const link = document.createElement('a');
                        link.id = `${choiceTitle}-${saveName}-${Date.now()}`;
                        link.href = window.URL.createObjectURL(blob);
                        link.download = `${choiceTitle}-${saveName}-${Date.now()}.json`;
                        link.click();
                        
                        window.URL.revokeObjectURL(link.href);

                        if (document.getElementById(link.id)) {
                            document.getElementById(link.id).remove();
                        }

                        console.debug('ChoiceScriptSavePluginInjector: All saves exported successfully!');
                    });
                };

                var btn = document.createElement('button');
                btn.innerHTML = 'Export All';
                btn.setAttribute('class', 'spacedLink savePluginBtn');

                btn.addEventListener('click', () => {
                    if (choiceScriptSavePluginElement) {
                        exportAllSavesAsJsonFile();
                    }
                });

                parentElement.appendChild(btn);
            };

            const createExportSelectedSaveBtn = () => {
                const parentElement = document.getElementById('menuButton').parentElement;
                const choiceScriptSavePluginElement = document.getElementById('choice-script-save-plugin-injector');

                const exportSelectedSaveAsJsonFile = () => {
                    const selected = document.getElementById('quickSaveMenu');

                    if (selected.value <= 0) {
                        console.debug('ChoiceScriptSavePluginInjector: No save selected');
                        return;
                    }

                    ChoiceScriptSavePlugin._getSaveData(selected.value, (saveData) => {
                        if (!saveData) {
                            console.debug('ChoiceScriptSavePluginInjector: No save data found');
                            return;
                        }

                        console.debug(`ChoiceScriptSavePluginInjector: Exporting save ${selected.value}...`, saveData);

                        const choiceTitle = (saveData.stats.choice_title).replace(/\s+/g, '_').toLowerCase();
                        const saveName = (saveData.stats._smSaveName).replace(/\s+/g, '_').toLowerCase();

                        const json = JSON.stringify(saveData);

                        console.debug('ChoiceScriptSavePluginInjector: Exporting selected save as JSON file...');
                        console.debug(`ChoiceScriptSavePluginInjector: Choice title: ${choiceTitle}`);

                        const blob = new Blob([json], { type: 'application/json' });

                        const link = document.createElement('a');
                        link.id = `${choiceTitle}-${saveName}-${Date.now()}`;
                        link.href = window.URL.createObjectURL(blob);
                        link.download = `${choiceTitle}-${saveName}-${Date.now()}.json`;
                        link.click();
                        
                        window.URL.revokeObjectURL(link.href);

                        if (document.getElementById(link.id)) {
                            document.getElementById(link.id).remove();
                        }

                        console.debug('ChoiceScriptSavePluginInjector: Save exported successfully');
                    });
                };

                var btn = document.createElement('button');
                btn.innerHTML = 'Export';
                btn.setAttribute('class', 'spacedLink savePluginBtn');

                btn.addEventListener('click', () => {
                    if (choiceScriptSavePluginElement) {
                        exportSelectedSaveAsJsonFile();
                    }
                });

                parentElement.appendChild(btn);
            };

            const createImportSavesBtn = async () => {
                const parentElement = document.getElementById('menuButton').parentElement;
                const choiceScriptSavePluginElement = document.getElementById('choice-script-save-plugin-injector');

                const importSaves = () => {
                    const input = document.createElement('input');
                    input.type = 'file';
                    input.accept = '.json';
                    input.multiple = false;
                    
                    input.addEventListener('change', (event) => {
                        const file = event.target.files[0];
                        if (file) {
                            const reader = new FileReader();

                            reader.onload = async (e) => {
                                const json = e.target.result;
                                var saves = JSON.parse(json);

                                if (!Array.isArray(saves)) {
                                    saves = [saves];
                                }

                                console.debug('ChoiceScriptSavePluginInjector: Importing saves...', saves);
                                console.debug('ChoiceScriptSavePluginInjector: Number of saves to import:', saves.length);

                                var saveIds = [];

                                for (const save of saves) {
                                    const saveId = save.stats._smSaveDateId;
                                    
                                    ChoiceScriptSavePlugin._addToSaveList(saveId, (success) => {
                                        if (!success) {
                                            console.debug(`ChoiceScriptSavePluginInjector: Failed to add save ${saveId} to list.`);
                                            return;
                                        }

                                        console.debug(`ChoiceScriptSavePluginInjector: Added save ${saveId} to list.`);

                                        saveCookie(
                                            function () {},
                                            ChoiceScriptSavePlugin._formatSlotName(saveId), save.stats, save.temps, save.lineNum, save.indent, undefined, save.undeleted
                                        );

                                        console.debug(`ChoiceScriptSavePluginInjector: Imported save ${saveId} successfully.`);
                                        saveIds.push(saveId);
                                    });

                                    await new Promise(resolve => setTimeout(resolve, 100));
                                }

                                console.debug('ChoiceScriptSavePluginInjector: Imported saves successfully.', saveIds);

                                var selectEle = document.getElementById("quickSaveMenu");

                                if (selectEle) {
                                    selectEle.innerHTML = "";
                                    ChoiceScriptSavePlugin._populateSaveMenu(selectEle);
                                }
                            };
                            reader.readAsText(file);
                        }
                    });

                    input.click();
                };

                var btn = document.createElement('button');
                btn.innerHTML = 'Import';
                btn.setAttribute('class', 'spacedLink savePluginBtn');

                btn.addEventListener('click', () => {
                    if (choiceScriptSavePluginElement) {
                        importSaves();
                    }
                });

                parentElement.appendChild(btn);
            };

            // -- End of extended save functions --

            createExportSelectedSaveBtn();
            createExportAllSavesBtn();
            createImportSavesBtn();
        }, 5000);
    });
})();