// API基础URL
const API_BASE_URL = 'http://localhost:3000/api';

// 岗位相关API
const JobAPI = {
    // 获取所有岗位
    getAllJobs: async () => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs`);
            if (!response.ok) throw new Error('获取岗位列表失败');
            return await response.json();
        } catch (error) {
            console.error('获取岗位列表错误:', error);
            return [];
        }
    },
    
    // 获取单个岗位详情
    getJobById: async (id) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs/${id}`);
            if (!response.ok) throw new Error('获取岗位详情失败');
            return await response.json();
        } catch (error) {
            console.error('获取岗位详情错误:', error);
            return null;
        }
    },
    
    // 创建新岗位
    createJob: async (jobData) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify(jobData)
            });
            if (!response.ok) throw new Error('创建岗位失败');
            return await response.json();
        } catch (error) {
            console.error('创建岗位错误:', error);
            throw error;
        }
    },
    
    // 更新岗位
    updateJob: async (id, jobData) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs/${id}`, {
                method: 'PUT',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify(jobData)
            });
            if (!response.ok) throw new Error('更新岗位失败');
            return await response.json();
        } catch (error) {
            console.error('更新岗位错误:', error);
            throw error;
        }
    },
    
    // 删除岗位
    deleteJob: async (id) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs/${id}`, {
                method: 'DELETE'
            });
            if (!response.ok) throw new Error('删除岗位失败');
            return await response.json();
        } catch (error) {
            console.error('删除岗位错误:', error);
            throw error;
        }
    },
    
    // 启动智能筛选
    startScreening: async (id) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs/${id}/screen`, {
                method: 'POST'
            });
            if (!response.ok) throw new Error('启动筛选失败');
            return await response.json();
        } catch (error) {
            console.error('启动筛选错误:', error);
            throw error;
        }
    },
    
    // 获取岗位候选人列表
    getJobCandidates: async (id) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs/${id}/candidates`);
            if (!response.ok) throw new Error('获取候选人列表失败');
            return await response.json();
        } catch (error) {
            console.error('获取候选人列表错误:', error);
            return { candidates: [] };
        }
    },
    
    // 发布草稿岗位
    publishDraft: async (id) => {
        try {
            const response = await fetch(`${API_BASE_URL}/jobs/${id}/publish`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({})
            });
            if (!response.ok) throw new Error('发布岗位失败');
            return await response.json();
        } catch (error) {
            console.error('发布岗位错误:', error);
            throw error;
        }
    }
};

// 候选人相关API
const CandidateAPI = {
    // 获取所有候选人
    getAllCandidates: async () => {
        try {
            const response = await fetch(`${API_BASE_URL}/candidates`);
            if (!response.ok) throw new Error('获取候选人列表失败');
            return await response.json();
        } catch (error) {
            console.error('获取候选人列表错误:', error);
            return [];
        }
    },
    
    // 获取单个候选人详情
    getCandidateDetails: async (id) => {
        try {
            const response = await fetch(`${API_BASE_URL}/candidates/${id}`);
            if (!response.ok) throw new Error('获取候选人详情失败');
            return await response.json();
        } catch (error) {
            console.error('获取候选人详情错误:', error);
            return null;
        }
    },
    
    // 更新候选人状态
    updateCandidateStatus: async (id, status) => {
        try {
            const response = await fetch(`${API_BASE_URL}/candidates/${id}/status`, {
                method: 'PUT',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({ status })
            });
            if (!response.ok) throw new Error('更新候选人状态失败');
            return await response.json();
        } catch (error) {
            console.error('更新候选人状态错误:', error);
            throw error;
        }
    },
    
    // 添加候选人
    addCandidate: async (candidateData) => {
        try {
            const response = await fetch(`${API_BASE_URL}/candidates`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify(candidateData)
            });
            if (!response.ok) throw new Error('添加候选人失败');
            return await response.json();
        } catch (error) {
            console.error('添加候选人错误:', error);
            throw error;
        }
    }
};

// 统计数据相关API
const StatisticsAPI = {
    // 获取招聘总览统计
    getOverviewStats: async () => {
        try {
            const response = await fetch(`${API_BASE_URL}/statistics/overview`);
            if (!response.ok) throw new Error('获取招聘总览统计失败');
            return await response.json();
        } catch (error) {
            console.error('获取招聘总览统计错误:', error);
            return {
                totalJobs: 0,
                totalCandidates: 0,
                pendingResumes: 0,
                passedResumes: 0
            };
        }
    },
    
    // 获取部门招聘统计
    getDepartmentStats: async () => {
        try {
            const response = await fetch(`${API_BASE_URL}/statistics/departments`);
            if (!response.ok) throw new Error('获取部门招聘统计失败');
            return await response.json();
        } catch (error) {
            console.error('获取部门招聘统计错误:', error);
            return [];
        }
    },
    
    // 获取筛选效率统计
    getScreeningEfficiencyStats: async () => {
        try {
            const response = await fetch(`${API_BASE_URL}/statistics/screening-efficiency`);
            if (!response.ok) throw new Error('获取筛选效率统计失败');
            return await response.json();
        } catch (error) {
            console.error('获取筛选效率统计错误:', error);
            return [];
        }
    },
    
    // 获取候选人评分分布
    getScoreDistribution: async () => {
        try {
            const response = await fetch(`${API_BASE_URL}/statistics/score-distribution`);
            if (!response.ok) throw new Error('获取候选人评分分布失败');
            return await response.json();
        } catch (error) {
            console.error('获取候选人评分分布错误:', error);
            return [];
        }
    }
};

// 导出API
const API = {
    Job: JobAPI,
    Candidate: CandidateAPI,
    Statistics: StatisticsAPI
};

// 全局挂载API
window.API = API;