import { postgrestGet, postgrestPut } from "../postgrest-client";

/**
 * 从不同格式的 API 响应中提取数据
 * @param responseData API 响应数据
 * @returns 提取后的数据或 null
 */
function extractApiData<T>(responseData: unknown): T | null {
  if (!responseData) return null;
  
  // 格式1: { code: number, msg: string, data: T }
  if (typeof responseData === 'object' && responseData !== null && 
      'code' in responseData && 
      'data' in responseData && 
      (responseData as { data: unknown }).data) {
      return (responseData as { data: T }).data;
  }
  
  // 格式2: 直接是数据对象
  return responseData as T;
  }

/**
 * 提出意见的请求参数接口
 */
export interface SubmitOpinionRequest {
  reviewPointResultId: string | number;
  documentId: string | number;
  evaluationPointId: number | null; // 必须是数字ID
  auditOpinion: string;
  deductionScore: number;
}

/**
 * 提出意见的响应接口
*/
export interface SubmitOpinionResponse {
  success: boolean;
  message: string;
  data?: {
    id: string | number;
    created_at: string;
  };
}

/**
 * 交叉评查意见数据接口
 */
export interface CrossCheckingOpinion {
  proposal_id: string | number;
  evaluation_point_name: string;
  proposed_score: number;
  reason: string;
  proposer: string;
  votes: Array<{ voter: string; vote_type: string }>;
  agree_voters: string[];
  disagree_voters: string[];
  pending_voters: string[];
  can_vote: boolean;
  problem_message: string;
  proposer_id: number;
  created_at: string;
  status: string;
}

/**
 * API响应格式
 */
export interface ApiResponse<T> {
  data?: T;
  error?: string;
  status?: number;
}

/**
 * 安全获取JWT token
 * @param jwtToken JWT token字符串
 * @returns JWT token字符串
 */
async function safeGetJWT(jwtToken?: string): Promise<string> {
  return jwtToken || '';
}

/**
 * 获取当前登录用户是否是发起人
 * @param taskId 任务ID
 * @param userId 用户ID
 * @returns 是否是发起人
 */
export async function findIsProposer(taskId: string | number, userId: number | undefined): Promise<boolean> {
  // 通过postgrest的get请求去cross_examination_tasks表中进行查找assignee_id是否等于userId
  const response = await postgrestGet(`cross_examination_tasks`, {
    select: 'assigner_id',
    filter: {
      id: `eq.${taskId}`
    }
  });
  if (response.error) {
    console.error('获取任务数据失败:', response.error);
    return false;
  }
  const data = extractApiData<{assigner_id: number}[]>(response.data);
  // console.log('data', data);

  if (data && data.length > 0) {
    return data[0].assigner_id === userId;
  }
  return false;

}

/**
 * 提交交叉评查意见
 * @param opinionData 意见数据
 * @param jwtToken JWT token
 * @returns 提交结果
 */
export async function submitCrossCheckingOpinion(
  opinionData: SubmitOpinionRequest,
  jwtToken?: string,
  userInfo?: { user_id: number }
): Promise<ApiResponse<SubmitOpinionResponse>> {
  try {
    // 获取JWT token
    const token = await safeGetJWT(jwtToken);

    const requestData = {
      document_id: opinionData.documentId,
      evaluation_point_id: Number(opinionData.evaluationPointId), // 强制转数字
      proposed_score: opinionData.deductionScore,
      reason: opinionData.auditOpinion,
      proposer_id: userInfo?.user_id || 1,
      evaluation_result_id: opinionData.reviewPointResultId
    };

    const response = await fetch(`${API_BASE_URL}/admin/cross_review/proposals`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${token}`
      },
      body: JSON.stringify(requestData)
    });

    const data = await response.json();

    if (!response.ok) {
      throw new Error(data.message || '提交失败');
    }

    return {
      data: {
        success: true,
        message: '意见提交成功',
        data: data
      }
    };
  } catch (error) {
    console.error('提交交叉评查意见失败:', error);
    return {
      error: error instanceof Error ? error.message : '提交意见失败',
      status: 500
    };
  }
}

/**
 * 获取交叉评查意见列表（支持分页）
 * @param documentId 文档ID
 * @param page 页码
 * @param pageSize 每页大小
 * @param userId 用户ID，可选，便于后端接口对接
 * @param jwtToken JWT token
 * @returns 意见列表和总数
 */
import { API_BASE_URL } from '../../config/api-config';

export async function getCrossCheckingOpinions(
  documentId: string | number, 
  page: number = 1, 
  pageSize: number = 10,
  userId?: number, // 可选，便于后端接口对接
  jwtToken?: string // 改为jwtToken参数
): Promise<ApiResponse<{ opinions: CrossCheckingOpinion[], total: number }>> {
  try {
    // 获取JWT token
    const token = await safeGetJWT(jwtToken);

    // 如果没传userId，默认用1
    const realUserId = userId ?? 1;
    // 实际后端API调用，拼接API_BASE_URL
    const response = await fetch(`${API_BASE_URL}/admin/cross_review/proposals/document`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${token}`
      },
      body: JSON.stringify({
        user_id: realUserId,
        document_id: documentId, // 如果后端需要document_id可以加上
        page,
        page_size: pageSize
      })
    });
    if (!response.ok) {
      throw new Error('获取意见列表失败');
    }
    const data = await response.json();
    console.log('最原始的返回data', data);
    // 处理新的数据结构，支持分页
    const responseData = data.data || data;
    const pagination = data.pagination;
    
    // 定义后端返回的数据项类型
    interface ProposalItem {
      proposal_id: string | number;
      evaluation_point_name: string;
      proposed_score: number;
      reason: string;
      proposer: string;
      votes?: Array<{ voter: string; vote_type: string }>;
      agree_voters?: string[];
      disagree_voters?: string[];
      pending_voters?: string[];
      can_vote?: boolean;
      problem_message?: string;
      proposer_id: number;
      created_at: string;
      status: string;
    }
    
    // 适配后端返回结构，使用新字段
    const opinions: CrossCheckingOpinion[] = Array.isArray(responseData) ? responseData.map((item: ProposalItem) => ({
      proposal_id: item.proposal_id,
      evaluation_point_name: item.evaluation_point_name,
      proposed_score: item.proposed_score,
      reason: item.reason,
      proposer: item.proposer,
      votes: item.votes || [],
      agree_voters: item.agree_voters || [],
      disagree_voters: item.disagree_voters || [],
      pending_voters: item.pending_voters || [],
      can_vote: item.can_vote ?? false,
      problem_message: item.problem_message || '',
      proposer_id: item.proposer_id,
      created_at: item.created_at,
      status: item.status
    })) : [];
    
    return {
      data: {
        opinions,
        total: pagination?.total || opinions.length
      }
    };
  } catch (error) {
    console.error('获取交叉评查意见失败:', error);
    return {
      error: error instanceof Error ? error.message : '获取意见列表失败',
      status: 500
    };
  }
}

/**
 * 意见操作类型
 */
export type OpinionActionType = 'agree' | 'disagree' | 'withdraw_vote' | 'withdraw_opinion';

/**
 * 投票请求参数接口
 */
export interface OpinionVoteCreate {
  vote_type: 'agree' | 'disagree';
}

/**
 * 意见操作请求参数
 */
export interface OpinionActionRequest {
  opinionId: string | number;
  action: OpinionActionType;
}

/**
 * 执行意见操作（赞同、反对、撤销投票、撤销意见）
 * @param actionData 操作数据
 * @param jwtToken JWT token
 * @returns 操作结果
 */
export async function performOpinionAction(
  actionData: OpinionActionRequest,
  jwtToken?: string,
  userInfo?: { user_id: number }
): Promise<ApiResponse<{ success: boolean; message: string }>> {
  try {
    const token = await safeGetJWT(jwtToken);

    let message = '';
    let endpoint = '';
    let requestBody: Record<string, unknown> = {};

    switch (actionData.action) {
      case 'agree':
        message = '已赞同该意见';
        endpoint = `${API_BASE_URL}/admin/cross_review/proposals/${actionData.opinionId}/votes`;
        requestBody = { vote_type: 'agree', voter_id: userInfo?.user_id };
        break;
      case 'disagree':
        message = '已反对该意见';
        endpoint = `${API_BASE_URL}/admin/cross_review/proposals/${actionData.opinionId}/votes`;
        requestBody = { vote_type: 'disagree', voter_id: userInfo?.user_id };
        break;
      case 'withdraw_vote':
        message = '已撤销投票';
        // 撤销投票的接口，根据实际API调整
        endpoint = `${API_BASE_URL}/admin/cross_review/proposals/${actionData.opinionId}/votes`;
        requestBody = { vote_type: 'cancel', voter_id: userInfo?.user_id };
        break;
      case 'withdraw_opinion':
        message = '已撤销意见';
        // 撤销意见的接口，根据实际API调整
        endpoint = `${API_BASE_URL}/admin/cross_review/proposals/${actionData.opinionId}`;
        requestBody = {};
        break;
      default:
        throw new Error('无效的操作类型');
    }

    const response = await fetch(endpoint, {
      method: actionData.action === 'withdraw_opinion' ? 'DELETE' : 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${token}`
      },
      body: JSON.stringify(requestBody)
    });

    const data = await response.json();

    console.log('返回的意见列表数据',data);

    if (!response.ok) {
      throw new Error(data.message || data.error || '操作失败');
    }

    return {
      data: {
        success: true,
        message: message
      }
    };
  } catch (error) {
    console.error('执行意见操作失败:', error);
    return {
      error: error instanceof Error ? error.message : '操作失败',
      status: 500
    };
  }
}


/**
 * 完成评查
 * @param documentId 文档ID
 * @returns 完成评查结果
 */
export async function confirmReviewResults(
  documentId: string | number
): Promise<{data?: unknown, error?: string, status?: number}> {
  try {
    // 通过postgrest的post请求去documents表中进行查找id等于documentId的数据，更新documents表的audit_status为1
    const response = await postgrestPut(`documents`, {
      audit_status: 1
    }, {
      id: documentId
    });
    if(response.error) {
      return {
        error: response.error,
        status: response.status
      };
    }
    const extractedData = extractApiData<unknown>(response.data);
    if(!extractedData) {
      return {
        error: '更新文档状态失败',
        status: 500
      };
    }
    return {
      data: extractedData
    };
    
  } catch (error) {
    console.error('完成评查失败:', error);
    return {
      error: error instanceof Error ? error.message : '完成评查失败',
      status: 500
    };
  }
}


// 点击完成评查按钮后，调用接口，检查文档下提案是否存在未投票用户
export async function checkProposalVotes(
  documentId: string | number,
  jwtToken?: string
): Promise<{data?: unknown, error?: string, status?: number}> {
  try {
    // 获取JWT token
    const token = await safeGetJWT(jwtToken);

    const requestData = {
        document_id: documentId
    };

    const response = await fetch(`${API_BASE_URL}/admin/cross_review/proposals/document/check_pending_votes`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${token}`
      },
      body: JSON.stringify(requestData)
    });

    const data = await response.json();

    if (!response.ok) {
      throw new Error(data.message || '检查失败');
    }
    console.log("检查投票数据",data);

    return {
      data: {
        success: true,
        message: '检查成功',
        data: data
      }
    };
  } catch (error) {
    console.error('检查失败:', error);
    return {
      error: error instanceof Error ? error.message : '检查失败',
      status: 500
    };
  }
}