// ==UserScript==
// @name         国家中小学智慧教育平台 - 培训
// @namespace    http://tampermonkey.net/
// @version      18.0
// @description  注入完成所有视频进度
// @author       You
// @match        https://basic.smartedu.cn/*
// @match        https://www.smartedu.cn/*
// @icon         https://basic.smartedu.cn/favicon.ico
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';

    function log(...args) { console.log('[注入完成]', ...args); }

    const params = new URLSearchParams(location.search);
    const resourceId = params.get('resourceId');
    const url = location.href;

    const isCoursePage = url.includes('courseDetail') ||
                         url.includes('courseIndex') ||
                         url.includes('resourceId=') ||
                         url.includes('/jiaoshi/');

    if (!isCoursePage) return;

    log('v18.0 启动: ' + (resourceId || '').substring(0, 8));

    /* ===== 课程结构 ===== */
    let courseStructure = null;
    let allResourceIds = [];
    let allActivityIds = [];
    let asyncUrl = null;

    /* ===== 拦截 XHR ===== */

    const _open = XMLHttpRequest.prototype.open;
    const _send = XMLHttpRequest.prototype.send;

    XMLHttpRequest.prototype.open = function(method, u, ...rest) {
        this._url = u;
        this._method = method;
        return _open.call(this, method, u, ...rest);
    };

    XMLHttpRequest.prototype.send = function(body) {
        const self = this;

        /* ===== 1. 拦截 async_begin ===== */
        if (/progress\/actions\/async_begin/.test(self._url || '')) {
            asyncUrl = self._url;
            log('捕获 async_begin');
            self.addEventListener('readystatechange', function() {
                if (self.readyState === 4 && self.status === 200) {
                    try {
                        const data = JSON.parse(self.responseText);
                        if (data.ext_info) {
                            const ext = typeof data.ext_info === 'string' ? JSON.parse(data.ext_info) : data.ext_info;
                            courseStructure = ext;
                            allResourceIds = Object.keys(ext.resource_progress || {});
                            allActivityIds = Object.keys(ext.activity_progress || {});
                            log('课程结构: 资源=' + allResourceIds.length + ' 活动=' + allActivityIds.length);
                            setTimeout(submitComplete, 1000);
                        }
                    } catch(e) {
                        log('解析async_begin失败: ' + e.message);
                    }
                }
            });
            return _send.call(this, body);
        }

        /* ===== 2. 拦截 async（修改为全部完成） ===== */
        if (/progress\/actions\/async(?!_begin)/.test(self._url || '') && body && typeof body === 'string') {
            asyncUrl = self._url;
            log('捕获 async');

            try {
                const data = JSON.parse(body);
                const ext = typeof data.ext_info === 'string' ? JSON.parse(data.ext_info) : data.ext_info;

                /* 从请求体中提取课程结构 */
                if (!courseStructure && ext.resource_progress) {
                    courseStructure = ext;
                    allResourceIds = Object.keys(ext.resource_progress);
                    allActivityIds = Object.keys(ext.activity_progress || {});
                    log('从async提取结构: 资源=' + allResourceIds.length + ' 活动=' + allActivityIds.length);
                    setTimeout(submitComplete, 1000);
                }

                /* 修改所有资源为完成 */
                if (ext.resource_progress) {
                    for (const rid in ext.resource_progress) {
                        ext.resource_progress[rid] = 2;
                    }
                }
                if (ext.activity_progress) {
                    for (const aid in ext.activity_progress) {
                        ext.activity_progress[aid] = 2;
                    }
                }
                if (ext.resource_max_pos) {
                    for (const rid in ext.resource_max_pos) {
                        const cur = ext.resource_max_pos[rid];
                        if (cur && typeof cur === 'object' && cur.pos < 99999) {
                            cur.pos = 99999;
                        }
                    }
                }

                data.ext_info = JSON.stringify(ext);
                data.progress = 100;
                data.status = 2;

                log('已注入 async: 全部→完成');
                self.addEventListener('load', function() {
                    log('async响应: ' + self.status + ' ' + self.responseText.substring(0, 80));
                });

                return _send.call(this, JSON.stringify(data));
            } catch(e) {
                log('注入async出错: ' + e.message);
            }
        }

        /* ===== 3. 拦截 x-study-record-api PUT（位置设为99999） ===== */
        if (/x-study-record-api.*resource_learning_positions/.test(self._url || '') && body && typeof body === 'string') {
            log('捕获 study-record PUT: ' + self._url);
            try {
                const data = JSON.parse(body);
                const oldPos = data.position;
                data.position = '99999';
                log('位置修改: ' + oldPos + ' → 99999');
                self.addEventListener('load', function() {
                    log('study-record响应: ' + self.status + ' ' + self.responseText.substring(0, 80));
                });
                return _send.call(this, JSON.stringify(data));
            } catch(e) {
                log('注入study-record出错: ' + e.message);
            }
        }

        return _send.call(this, body);
    };

    /* ===== 4. 拦截 fetch ===== */

    const _fetch = window.fetch;
    if (_fetch) {
        window.fetch = function(input, init) {
            const reqUrl = typeof input === 'string' ? input : (input.url || '');

            if (/progress\/actions\/async_begin/.test(reqUrl)) {
                asyncUrl = reqUrl;
                return _fetch.call(this, input, init).then(function(resp) {
                    const clone = resp.clone();
                    clone.text().then(function(text) {
                        try {
                            const data = JSON.parse(text);
                            if (data.ext_info) {
                                const ext = typeof data.ext_info === 'string' ? JSON.parse(data.ext_info) : data.ext_info;
                                courseStructure = ext;
                                allResourceIds = Object.keys(ext.resource_progress || {});
                                log('fetch课程结构: 资源=' + allResourceIds.length);
                                setTimeout(submitComplete, 1000);
                            }
                        } catch(e) {}
                    });
                    return resp;
                });
            }

            if (/progress\/actions\/async(?!_begin)/.test(reqUrl) && init && init.body) {
                try {
                    const data = JSON.parse(init.body);
                    const ext = typeof data.ext_info === 'string' ? JSON.parse(data.ext_info) : data.ext_info;
                    if (!courseStructure && ext.resource_progress) {
                        courseStructure = ext;
                        allResourceIds = Object.keys(ext.resource_progress);
                        setTimeout(submitComplete, 1000);
                    }
                    if (ext.resource_progress) {
                        for (const rid in ext.resource_progress) ext.resource_progress[rid] = 2;
                    }
                    if (ext.activity_progress) {
                        for (const aid in ext.activity_progress) ext.activity_progress[aid] = 2;
                    }
                    data.ext_info = JSON.stringify(ext);
                    data.progress = 100;
                    data.status = 2;
                    init.body = JSON.stringify(data);
                    log('已注入 fetch async: 全部→完成');
                } catch(e) {}
            }

            if (/x-study-record-api.*resource_learning_positions/.test(reqUrl) && init && init.body) {
                try {
                    const data = JSON.parse(init.body);
                    data.position = '99999';
                    init.body = JSON.stringify(data);
                    log('已注入 fetch study-record: 位置→99999');
                } catch(e) {}
            }

            return _fetch.call(this, input, init);
        };
    }

    /* ===== 5. 主动完成请求 ===== */

    function submitComplete() {
        if (!courseStructure || !asyncUrl) {
            log('submitComplete: 数据不全');
            return;
        }

        const ext = {
            resource_progress: {},
            resource_max_pos: {},
            activity_progress: {},
            activity_last_learning_resource: courseStructure.activity_last_learning_resource || {},
            last_learning_activity: courseStructure.last_learning_activity || {},
            miniwork_progress: {},
            activity_exam_progress: {},
            activity_event: {},
            resource_study_time_ignore: [],
            additional_params: courseStructure.additional_params || {}
        };

        for (const rid in courseStructure.resource_progress) {
            ext.resource_progress[rid] = 2;
            ext.resource_max_pos[rid] = { pos: 99999, type: 'video' };
        }
        for (const aid in courseStructure.activity_progress) {
            ext.activity_progress[aid] = 2;
        }

        const xhr = new XMLHttpRequest();
        xhr.open('POST', asyncUrl, true);
        xhr.setRequestHeader('Content-Type', 'application/json');
        xhr.withCredentials = true;
        xhr.onload = function() {
            log('主动完成请求: ' + xhr.status + ' ' + xhr.responseText.substring(0, 100));
        };
        xhr.onerror = function() {
            log('主动完成请求失败');
        };
        xhr.send(JSON.stringify({
            ext_info: JSON.stringify(ext),
            progress: 100,
            status: 2
        }));
        log('已发送主动完成请求');
    }

    log('拦截器已就绪');
})();