/**
 * 视频控制模块
 * 负责所有视频播放相关的逻辑
 */

import { campApi } from '../../../config/camp_api.js';
import { resolveVideoCompletionPercent } from './utils.js';
import * as dataFetcher from './data-fetcher.js';

/**
 * 视频播放结束
 * @param {Object} context - 页面上下文
 */
export function onVideoEnded(context) {
	context.setData({
		isVideoTaskPlaying: false
	});
}

/**
 * 视频播放错误
 * @param {Object} context - 页面上下文
 */
export function onVideoError(context) {
	context.setData({
		showVideo: false,
		isVideoTaskPlaying: false
	});
	wx.showToast({
		title: '视频播放失败',
		icon: 'none'
	});
}

/**
 * 视频开始播放
 * 区分任务视频和介绍视频：只有视频任务才标记 isVideoTaskPlaying
 * @param {Object} context - 页面上下文
 */
export function onVideoPlay(context) {
	var isTaskVideo = !!context.data.currentPlayingTaskId;
	context.setData({
		hasVideoPlayed: true,
		isAutoPlay: false,
		_pendingVideoPlay: false,
		isVideoTaskPlaying: isTaskVideo  // 只有视频任务才标记为 true
	});
}

/**
 * 视频暂停
 * @param {Object} context - 页面上下文
 */
export function onVideoPause(context) {
	context.setData({
		isVideoTaskPlaying: false
	});
}

/**
 * 监听视频播放进度 请求接口
 * @param {Object} context - 页面上下文
 * @param {Object} e - 事件对象
 */
export async function onVideoTimeUpdate(context, e) {
	var currentVideoCompletionPercent = context.data.currentVideoCompletionPercent;
	var hasLogged10Percent = context.data.hasLogged10Percent;
	var currentPlayingTaskId = context.data.currentPlayingTaskId;
	var currentSelectedCourseId = context.data.currentSelectedCourseId;
	var currentSelectedCourseIndex = context.data.currentSelectedCourseIndex;
	var requiredPercent = 100;
	
	if (typeof currentVideoCompletionPercent === 'number' && !isNaN(currentVideoCompletionPercent) && currentVideoCompletionPercent > 0) {
		requiredPercent = currentVideoCompletionPercent;
	}
	if (requiredPercent <= 0) {
		requiredPercent = 100;
	}
	if (requiredPercent > 100) {
		requiredPercent = 100;
	}
	if (requiredPercent > 0 && requiredPercent <= 1) {
		requiredPercent = requiredPercent * 100;
	}
	var persent = requiredPercent / 100;
	var { currentTime, duration } = e.detail;

	// 检查是否已经发送过请求
	if (hasLogged10Percent) {
		return;
	}

	// 检查是否达到进度要求或视频结束
	var isProgressReached = duration > 0 && currentTime / duration >= persent;
	var isVideoEnded = duration > 0 && currentTime >= duration;

	if ((isProgressReached || isVideoEnded) && currentPlayingTaskId) {
		var userId = String(wx.getStorageSync('wxuserid') || '');
		var taskId = String(currentPlayingTaskId || '');

		if (!userId) {
			return;
		}
		if (!taskId) {
			return;
		}

		try {
			var payload = {
				user_id: userId,
				task_id: taskId,
				is_completed: true,
				completed_at: String(Math.floor(Date.now() / 1000))
			};
			var res = await campApi.updateCampProgress(payload);
			if ((res && res.success === true) || (res && res.code === 200)) {
				// 先立即更新任务状态（立即更新UI），不中断视频播放
				if (context.updateTaskStatus) {
					context.updateTaskStatus(taskId, 'Completed');
				}

				// 视频任务进度已上报成功，静默请求一次营地详情接口，拉取最新任务列表与 can_start，下一任务可解锁
				var campId = context.data.campId;
				if (campId && dataFetcher.fetchCampData) {
					dataFetcher.fetchCampData(context, campId, true);
				} else if (context.refreshTaskListStatus) {
					context.refreshTaskListStatus(currentSelectedCourseId, currentSelectedCourseIndex, true);
				}
			}
		} catch (error) {
		}

		// 标记已发送请求
		context.setData({ hasLogged10Percent: true });
	}
}

/**
 * 处理视频任务
 * 注意：无论任务是否已完成，都允许用户观看视频
 * @param {Object} context - 页面上下文
 * @param {Object} sendParams - 任务参数
 */
export function handleVideoTask(context, sendParams) {
	var taskIdStr = sendParams.taskId ? String(sendParams.taskId) : '';
	var completionPercent = resolveVideoCompletionPercent(sendParams.task);
	var videoCompletionMap = Object.assign({}, context.data.videoCompletionMap || {});
	if (completionPercent === null && taskIdStr && videoCompletionMap.hasOwnProperty(taskIdStr)) {
		completionPercent = videoCompletionMap[taskIdStr];
	}
	
	// 使用按任务ID查询的新接口（仅保留新结构）
	// 注意：不检查任务状态，即使任务已完成也允许播放视频
	campApi.getTaskDetailById(sendParams.taskId).then(function(res){
		var videoUrl = '';
		if (!res || res.success !== true || !res.task) {
			wx.showToast({
				title: '获取视频任务失败',
				icon: 'none'
			});
			wx.hideLoading();
			return;
		}

		var task = res.task || {};
		// 兼容多种格式：task.content.video_url 或 task.content.video.video_url
		var content = task.content || {};
		var videoContent = content.video || {};
		videoUrl = content.video_url || videoContent.video_url || '';
		var detailPercent = resolveVideoCompletionPercent(task);
		if (detailPercent !== null) {
			completionPercent = detailPercent;
		}

		if (completionPercent === null) {
			completionPercent = 100;
		}
		if (typeof completionPercent !== 'number' || isNaN(completionPercent)) {
			completionPercent = 100;
		}
		if (completionPercent <= 0) {
			completionPercent = 100;
		}
		completionPercent = Math.min(100, Math.max(1, Math.round(completionPercent)));

		if (taskIdStr) {
			videoCompletionMap[taskIdStr] = completionPercent;
		}

		if (videoUrl) {
			// 先暂停当前视频（如果有），避免播放冲突
			try {
				if (context.videoContext) {
					context.videoContext.pause();
				}
			} catch (e) {
			}

			// 准备新的视频数据（注意：不覆盖 introType，保留打卡营原始介绍类型）
			var newVideoData = {
				topContent: videoUrl,
				topContentType: 'INTRO_TYPE_VIDEO',
				// 注意：不设置 introType，保留打卡营原始的介绍类型，以便退出时正确恢复
				showVideo: true,
				hasLogged10Percent: false,
				currentPlayingTaskId: sendParams.taskId,
				currentPlayingTaskType: 'TASK_TYPE_VIDEO',
				videoTitle: sendParams.taskTitle,
				isAutoPlay: true,
				currentVideoCompletionPercent: completionPercent,
				videoCompletionMap: videoCompletionMap,
				_pendingVideoPlay: true,  // 标记需要自动播放
				hasVideoPlayed: false     // 重置播放状态
			};

			// 如果当前已经有视频在播放（比如介绍视频），需要先销毁再重建 video 组件
			// 否则微信小程序的 <video> 组件可能不会正确切换视频源
			var isVideoAlreadyShowing = context.data.showVideo && context.data.topContentType === 'INTRO_TYPE_VIDEO';

			if (isVideoAlreadyShowing) {
				// 先隐藏视频组件（销毁），再显示新的视频
				context.setData({ showVideo: false }, function() {
					setTimeout(function() {
						context.setData(newVideoData, function() {
							// 重新创建 videoContext（因为旧的组件已销毁）
							context.videoContext = wx.createVideoContext('bannerVideo', context);
							setTimeout(function() {
								try {
									if (context.videoContext) {
										var playResult = context.videoContext.play();
										if (playResult && typeof playResult.catch === 'function') {
											playResult.catch(function(err) {});
										}
									}
								} catch (e) {}
							}, 300);
						});
					}, 100); // 等待组件销毁完成
				});
			} else {
				// 当前没有视频在播放，直接设置
				// 确保 videoContext 已初始化
				if (!context.videoContext) {
					context.videoContext = wx.createVideoContext('bannerVideo', context);
				}
				context.setData(newVideoData, function() {
					setTimeout(function() {
						try {
							// 重新获取 videoContext（组件可能是新创建的）
							context.videoContext = wx.createVideoContext('bannerVideo', context);
							if (context.videoContext) {
								var playResult = context.videoContext.play();
								if (playResult && typeof playResult.catch === 'function') {
									playResult.catch(function(err) {});
								}
							}
						} catch (e) {}
					}, 500);
				});
			}
			wx.hideLoading();
		} else {
			wx.showToast({
				title: '视频地址不存在',
				icon: 'none'
			});
			wx.hideLoading();
		}
	});
}

/**
 * 开始播放顶部视频
 * @param {Object} context - 页面上下文
 */
export function startTopVideo(context) {
	context.setData({
		showVideo: true,
	});
}

/**
 * 暂停视频（用于页面隐藏或跳转时）
 * @param {Object} context - 页面上下文
 */
export function pauseVideo(context) {
	try {
		if (context.videoContext) {
			context.videoContext.pause();
		}
	} catch (e) {
	}
	context.setData({
		isVideoTaskPlaying: false
	});
}

/**
 * 暂停并隐藏视频（用于切换到非视频任务时）
 * @param {Object} context - 页面上下文
 */
export function pauseAndHideVideo(context) {
	try {
		// 先暂停视频播放
		if (context.videoContext) {
			context.videoContext.pause();
		}
	} catch (e) {
	}
	
	// 隐藏视频组件并清除自动播放标记
	context.setData({
		showVideo: false,
		_pendingVideoPlay: false,
		isAutoPlay: false,
		isVideoTaskPlaying: false
	});
}