/**
 * 主观题任务服务模块
 * 负责任务详情和进度相关的 API 调用
 */

import { campApi } from '../../../config/camp_api.js';

/**
 * 静默获取用户任务进度（避免全局 request 的业务错误弹窗）
 * @param {String} userId - 用户ID
 * @param {String} taskId - 任务ID
 * @returns {Promise} 任务进度
 */
export function fetchProgressSilent(userId, taskId) {
	// 使用 Fiber 后端的接口
	return campApi.getProgressDetail(userId, taskId).then(function(res) {
		// 统一返回格式
		if (res && res.success === true) {
			return res;
		} else if (res && res.code === 200) {
			return {
				success: true,
				progress: res.data || res.progress
			};
		}
		return res;
	}).catch(function(err) {
		// 静默失败，返回 null
		console.log('获取进度失败:', err);
		return null;
	});
}

/**
 * 从任务 condition 解析是否需要审核（与后端一致：根级 need_review 或 subjective.need_review）
 * @param {Object} condition - task.condition
 * @returns {Boolean}
 */
function parseNeedReview(condition) {
	if (!condition || typeof condition !== 'object') return false;
	if (condition.need_review === true) return true;
	var sub = condition.subjective;
	if (sub && typeof sub === 'object' && sub.need_review === true) return true;
	return false;
}

/** 将后端数字 review_status (0=pending, 1=approved, 2=rejected) 转为前端字符串 */
function normalizeReviewStatus(val) {
	if (val === undefined || val === null) return 'NOT_STARTED';
	if (typeof val === 'number') {
		if (val === 0) return 'pending';
		if (val === 1) return 'approved';
		if (val === 2) return 'rejected';
	}
	return String(val);
}

/**
 * 获取任务详情
 * @param {String} taskId - 任务ID
 * @returns {Promise} 任务详情
 */
export function getTaskDetail(taskId) {
	return campApi.getTaskDetailById(taskId).then(function(taskDetail){
		console.log('taskDetail', taskDetail,taskId);
		if (taskDetail && taskDetail.success === true && taskDetail.task) {
			var task = taskDetail.task;
			// 接口返回的 content 和 condition 可能为 { subjective: { pdf_url, description, need_review, review_status } }
			var content = task.content || {};
			var condition = task.condition || {};
			var subContent = content.subjective || content;
			var subCondition = condition.subjective || condition;
			return {
				pdfUrl: subContent.pdf_url || content.pdf_url || '',
				description: subContent.description || content.description || '',
				needReview: parseNeedReview(condition),
				reviewStatus: normalizeReviewStatus(subCondition.review_status !== undefined && subCondition.review_status !== null ? subCondition.review_status : condition.review_status)
			};
		} else if (taskDetail && taskDetail.code === 200 && taskDetail.data) {
			var data = taskDetail.data;
			var condition = data.condition || {};
			var content = data.content || {};
			var subContent = content.subjective || content;
			return {
				pdfUrl: data.pdf_url || subContent.pdf_url || content.pdf_url || '',
				description: subContent.description || content.description || data.description || '',
				needReview: parseNeedReview(condition) || !!data.need_review,
				reviewStatus: normalizeReviewStatus((condition.subjective || condition).review_status)
			};
		}
		return null;
	});
}

/**
 * 提交答案
 * @param {String} userId - 用户ID
 * @param {String} taskId - 任务ID
 * @param {Array} answerImages - 答案图片URL数组
 * @returns {Promise} 提交结果
 */
export function submitAnswer(userId, taskId, answerImages) {
	const formatDateTimeString = (date) => {
		var d = date || new Date();
		var year = d.getFullYear();
		var month = String(d.getMonth() + 1).padStart(2, '0');
		var day = String(d.getDate()).padStart(2, '0');
		var hours = String(d.getHours()).padStart(2, '0');
		var minutes = String(d.getMinutes()).padStart(2, '0');
		var seconds = String(d.getSeconds()).padStart(2, '0');
		return year + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
	};

	var submitData = {
		user_id: String(userId),
		task_id: String(taskId),
		is_completed: true,
		completed_at: formatDateTimeString(new Date()),
		answer_images: answerImages
	};

	return campApi.updateCampProgress(submitData);
}