126 lines
5.8 KiB
PL/PgSQL
126 lines
5.8 KiB
PL/PgSQL
-- 学生成就系统表结构
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-- 用于记录学生获得的各种成就和徽章
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-- 成就定义表
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CREATE TABLE IF NOT EXISTS public.ak_achievements (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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name VARCHAR(128) NOT NULL UNIQUE, -- 成就名称 (添加唯一约束)
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description TEXT, -- 成就描述
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category VARCHAR(32) DEFAULT 'general', -- 成就分类 (training, skill, progress, persistence, special)
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difficulty VARCHAR(16) DEFAULT 'easy', -- 难度等级 (easy, medium, hard, expert)
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points INT DEFAULT 10, -- 奖励积分
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icon VARCHAR(16) DEFAULT '🏆', -- 成就图标
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requirements TEXT, -- 获得条件说明
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is_active BOOLEAN DEFAULT true, -- 是否启用
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sort_order INT DEFAULT 0, -- 排序顺序
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created_at TIMESTAMP WITH TIME ZONE DEFAULT now(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT now()
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);
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COMMENT ON TABLE public.ak_achievements IS '成就定义表';
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-- 学生成就记录表
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CREATE TABLE IF NOT EXISTS public.ak_student_achievements (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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student_id uuid REFERENCES public.ak_users(id) ON DELETE CASCADE, -- 学生ID
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achievement_id uuid REFERENCES public.ak_achievements(id) ON DELETE CASCADE, -- 成就ID
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unlocked_at TIMESTAMP WITH TIME ZONE DEFAULT now(), -- 获得时间
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progress_current INT DEFAULT 0, -- 当前进度
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progress_target INT DEFAULT 1, -- 目标进度
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is_featured BOOLEAN DEFAULT false, -- 是否为精选成就
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created_at TIMESTAMP WITH TIME ZONE DEFAULT now()
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);
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COMMENT ON TABLE public.ak_student_achievements IS '学生成就记录表';
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-- 创建索引
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CREATE INDEX IF NOT EXISTS idx_achievements_category ON public.ak_achievements(category);
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CREATE INDEX IF NOT EXISTS idx_achievements_difficulty ON public.ak_achievements(difficulty);
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CREATE INDEX IF NOT EXISTS idx_student_achievements_student_id ON public.ak_student_achievements(student_id);
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CREATE INDEX IF NOT EXISTS idx_student_achievements_achievement_id ON public.ak_student_achievements(achievement_id);
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CREATE INDEX IF NOT EXISTS idx_student_achievements_unlocked_at ON public.ak_student_achievements(unlocked_at);
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-- 防止重复获得同一成就
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ALTER TABLE public.ak_student_achievements
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ADD CONSTRAINT uk_student_achievement_unique UNIQUE (student_id, achievement_id);
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-- 插入一些基础成就
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INSERT INTO public.ak_achievements (name, description, category, difficulty, points, icon, requirements) VALUES
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('初出茅庐', '完成第一次训练记录', 'training', 'easy', 10, '🎯', '完成任意一次训练记录'),
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('坚持不懈', '连续训练7天', 'persistence', 'medium', 50, '🔥', '连续7天都有训练记录'),
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('技术精进', '单项技能评分达到90分以上', 'skill', 'hard', 100, '⚡', '在任意技能项目中获得90分以上评分'),
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('全能选手', '完成所有训练项目', 'training', 'expert', 200, '🏆', '完成系统中所有的训练项目'),
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('进步之星', '单月内平均分提升10分以上', 'progress', 'medium', 75, '📈', '在一个月内平均成绩提升10分或以上'),
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('月度之王', '成为月度训练积分第一名', 'special', 'expert', 300, '👑', '在月度排行榜中获得第一名')
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ON CONFLICT (name) DO NOTHING;
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-- 创建触发器函数，自动检查成就获得条件
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CREATE OR REPLACE FUNCTION check_student_achievements()
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RETURNS TRIGGER AS $$
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DECLARE
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student_uuid uuid;
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achievement_uuid uuid;
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assignment_count INT;
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avg_score FLOAT;
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consecutive_days INT;
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BEGIN
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-- 获取学生ID
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student_uuid := NEW.student_id;
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-- 检查"初出茅庐"成就 - 完成第一次训练记录
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SELECT id INTO achievement_uuid FROM public.ak_achievements WHERE name = '初出茅庐';
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IF achievement_uuid IS NOT NULL THEN
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SELECT COUNT(*) INTO assignment_count
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FROM public.ak_assignment_submissions
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WHERE student_id = student_uuid AND status = 'submitted';
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IF assignment_count = 1 THEN
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INSERT INTO public.ak_student_achievements (student_id, achievement_id)
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VALUES (student_uuid, achievement_uuid)
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ON CONFLICT (student_id, achievement_id) DO NOTHING;
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END IF;
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END IF;
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-- 检查"技术精进"成就 - 90分以上评分
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SELECT id INTO achievement_uuid FROM public.ak_achievements WHERE name = '技术精进';
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IF achievement_uuid IS NOT NULL AND NEW.final_score >= 90 THEN
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INSERT INTO public.ak_student_achievements (student_id, achievement_id)
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VALUES (student_uuid, achievement_uuid)
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ON CONFLICT (student_id, achievement_id) DO NOTHING;
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END IF;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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-- 创建触发器
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DROP TRIGGER IF EXISTS trigger_check_achievements ON public.ak_assignment_submissions;
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CREATE TRIGGER trigger_check_achievements
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AFTER INSERT OR UPDATE ON public.ak_assignment_submissions
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FOR EACH ROW
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EXECUTE FUNCTION check_student_achievements();
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-- 创建获取用户成就统计的函数
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CREATE OR REPLACE FUNCTION get_student_achievement_stats(p_student_id uuid)
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RETURNS TABLE(
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total_achievements INT,
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total_points INT,
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completion_rate FLOAT,
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recent_achievements_count INT
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) AS $$
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BEGIN
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RETURN QUERY
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SELECT
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COUNT(sa.id)::INT as total_achievements,
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COALESCE(SUM(a.points), 0)::INT as total_points,
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CASE
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WHEN COUNT(DISTINCT a_all.id) > 0
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THEN (COUNT(sa.id)::FLOAT / COUNT(DISTINCT a_all.id) * 100)
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ELSE 0.0
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END as completion_rate,
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COUNT(CASE WHEN sa.unlocked_at >= NOW() - INTERVAL '7 days' THEN 1 END)::INT as recent_achievements_count
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FROM public.ak_achievements a_all
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LEFT JOIN public.ak_student_achievements sa ON a_all.id = sa.achievement_id AND sa.student_id = p_student_id
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LEFT JOIN public.ak_achievements a ON sa.achievement_id = a.id
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WHERE a_all.is_active = true;
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END;
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$$ LANGUAGE plpgsql SECURITY DEFINER;
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