课程附件表

databases/v1.2.sql

@@ -18,4 +18,16 @@ CREATE TABLE `admin_logs`
     `created_at`     timestamp NULL DEFAULT NULL,
     PRIMARY KEY (`id`),
     KEY              `a_m_o` (`admin_id`,`module`,`opt`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE `course_attachment` (
+     `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
+     `course_id` int(11) NOT NULL DEFAULT '0' COMMENT '课程ID',
+     `sort` int(11) NOT NULL DEFAULT '0' COMMENT '升序',
+     `title` varchar(255) NOT NULL DEFAULT '' COMMENT '附件名',
+     `type` varchar(20) NOT NULL DEFAULT '' COMMENT '附件类型',
+     `rid` int(11) NOT NULL DEFAULT '0' COMMENT '资源id',
+     `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
+     PRIMARY KEY (`id`),
+     KEY `course_id` (`course_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

src/main/java/xyz/playedu/api/domain/CourseAttachment.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2023 杭州白书科技有限公司
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package xyz.playedu.api.domain;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.Date;
+
+/**
+ * @TableName course_attachment
+ */
+@TableName(value = "course_attachment")
+@Data
+public class CourseAttachment implements Serializable {
+    /** */
+    @TableId(type = IdType.AUTO)
+    private Integer id;
+
+    /** 课程ID */
+    @JsonProperty("course_id")
+    private Integer courseId;
+
+    /** 升序 */
+    private Integer sort;
+
+    /** 附件名 */
+    private String title;
+
+    /** 附件类型 */
+    private String type;
+
+    /** 资源id */
+    private Integer rid;
+
+    /** */
+    @JsonIgnore private Date createdAt;
+
+    @TableField(exist = false)
+    private static final long serialVersionUID = 1L;
+
+    @Override
+    public boolean equals(Object that) {
+        if (this == that) {
+            return true;
+        }
+        if (that == null) {
+            return false;
+        }
+        if (getClass() != that.getClass()) {
+            return false;
+        }
+        CourseAttachment other = (CourseAttachment) that;
+        return (this.getId() == null ? other.getId() == null : this.getId().equals(other.getId()))
+                && (this.getCourseId() == null
+                        ? other.getCourseId() == null
+                        : this.getCourseId().equals(other.getCourseId()))
+                && (this.getSort() == null
+                        ? other.getSort() == null
+                        : this.getSort().equals(other.getSort()))
+                && (this.getTitle() == null
+                        ? other.getTitle() == null
+                        : this.getTitle().equals(other.getTitle()))
+                && (this.getType() == null
+                        ? other.getType() == null
+                        : this.getType().equals(other.getType()))
+                && (this.getRid() == null
+                        ? other.getRid() == null
+                        : this.getRid().equals(other.getRid()))
+                && (this.getCreatedAt() == null
+                        ? other.getCreatedAt() == null
+                        : this.getCreatedAt().equals(other.getCreatedAt()));
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((getId() == null) ? 0 : getId().hashCode());
+        result = prime * result + ((getCourseId() == null) ? 0 : getCourseId().hashCode());
+        result = prime * result + ((getSort() == null) ? 0 : getSort().hashCode());
+        result = prime * result + ((getTitle() == null) ? 0 : getTitle().hashCode());
+        result = prime * result + ((getType() == null) ? 0 : getType().hashCode());
+        result = prime * result + ((getRid() == null) ? 0 : getRid().hashCode());
+        result = prime * result + ((getCreatedAt() == null) ? 0 : getCreatedAt().hashCode());
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", id=").append(id);
+        sb.append(", courseId=").append(courseId);
+        sb.append(", sort=").append(sort);
+        sb.append(", title=").append(title);
+        sb.append(", type=").append(type);
+        sb.append(", rid=").append(rid);
+        sb.append(", createdAt=").append(createdAt);
+        sb.append(", serialVersionUID=").append(serialVersionUID);
+        sb.append("]");
+        return sb.toString();
+    }
+}

src/main/java/xyz/playedu/api/mapper/CourseAttachmentMapper.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2023 杭州白书科技有限公司
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package xyz.playedu.api.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+import xyz.playedu.api.domain.CourseAttachment;
+
+@Mapper
+public interface CourseAttachmentMapper extends BaseMapper<CourseAttachment> {}

src/main/java/xyz/playedu/api/service/CourseAttachmentService.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2023 杭州白书科技有限公司
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package xyz.playedu.api.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import xyz.playedu.api.domain.CourseAttachment;
+import xyz.playedu.api.exception.NotFoundException;
+
+import java.util.List;
+
+public interface CourseAttachmentService extends IService<CourseAttachment> {
+
+    CourseAttachment findOrFail(Integer id, Integer courseId) throws NotFoundException;
+
+    void update(CourseAttachment courseAttachment, Integer sort, String title);
+
+    List<CourseAttachment> getAttachmentByCourseId(Integer courseId);
+
+    CourseAttachment create(
+            Integer courseId,
+            Integer sort,
+            String title,
+            String type,
+            Integer rid);
+
+    Integer getCountByCourseId(Integer courseId);
+
+    void remove(Integer courseId);
+
+    void updateSort(List<Integer> ids, Integer cid);
+
+    List<Integer> getRidsByCourseId(Integer courseId, String type);
+
+    List<CourseAttachment> chunk(List<Integer> attachmentIds);
+}

src/main/java/xyz/playedu/api/service/impl/internal/CourseAttachmentServiceImpl.java

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2023 杭州白书科技有限公司
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package xyz.playedu.api.service.impl.internal;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.stereotype.Service;
+import xyz.playedu.api.domain.CourseAttachment;
+import xyz.playedu.api.exception.NotFoundException;
+import xyz.playedu.api.mapper.CourseAttachmentMapper;
+import xyz.playedu.api.service.CourseAttachmentService;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+@Service
+public class CourseAttachmentServiceImpl extends ServiceImpl<CourseAttachmentMapper, CourseAttachment>
+        implements CourseAttachmentService {
+
+    @Override
+    public CourseAttachment findOrFail(Integer id, Integer courseId) throws NotFoundException {
+        CourseAttachment attachment = getOne(query().getWrapper().eq("id", id).eq("course_id", courseId));
+        if (attachment == null) {
+            throw new NotFoundException("附件不存在");
+        }
+        return attachment;
+    }
+
+    @Override
+    public void update(
+            CourseAttachment courseAttachment,
+            Integer sort,
+            String title) {
+        CourseAttachment attachment = new CourseAttachment();
+        attachment.setId(courseAttachment.getId());
+        attachment.setSort(sort);
+        attachment.setTitle(title);
+
+        updateById(attachment);
+    }
+
+    @Override
+    public List<CourseAttachment> getAttachmentByCourseId(Integer courseId) {
+        return list(query().getWrapper().eq("course_id", courseId).orderByAsc("sort"));
+    }
+
+    @Override
+    public CourseAttachment create(
+            Integer courseId,
+            Integer sort,
+            String title,
+            String type,
+            Integer rid) {
+        CourseAttachment attachment = new CourseAttachment();
+        attachment.setCourseId(courseId);
+        attachment.setSort(sort);
+        attachment.setTitle(title);
+        attachment.setType(type);
+        attachment.setRid(rid);
+        attachment.setCreatedAt(new Date());
+
+        save(attachment);
+
+        return attachment;
+    }
+
+    @Override
+    public Integer getCountByCourseId(Integer courseId) {
+        return Math.toIntExact(count(query().getWrapper().eq("course_id", courseId)));
+    }
+
+    @Override
+    public void remove(Integer courseId) {
+        remove(query().getWrapper().eq("course_id", courseId));
+    }
+
+    @Override
+    public void updateSort(List<Integer> ids, Integer cid) {
+        if (ids == null || ids.size() == 0) {
+            return;
+        }
+        List<CourseAttachment> attachments = new ArrayList<>();
+        final Integer[] sortVal = {0};
+        for (Integer idVal : ids) {
+            attachments.add(
+                    new CourseAttachment() {
+                        {
+                            setId(idVal);
+                            setCourseId(cid);
+                            setSort(sortVal[0]++);
+                        }
+                    });
+        }
+        updateBatchById(attachments);
+    }
+
+    @Override
+    public List<Integer> getRidsByCourseId(Integer courseId, String type) {
+        return list(query().getWrapper().eq("course_id", courseId).eq("type", type)).stream()
+                .map(CourseAttachment::getRid)
+                .toList();
+    }
+
+    @Override
+    public List<CourseAttachment> chunk(List<Integer> attachmentIds) {
+        if (attachmentIds == null || attachmentIds.size() == 0) {
+            return new ArrayList<>();
+        }
+        return list(query().getWrapper().in("id", attachmentIds));
+    }
+}

src/main/resources/mapper/CourseAttachmentMapper.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="xyz.playedu.api.mapper.CourseAttachmentMapper">
+
+    <resultMap id="BaseResultMap" type="xyz.playedu.api.domain.CourseAttachment">
+            <id property="id" column="id" jdbcType="INTEGER"/>
+            <result property="courseId" column="course_id" jdbcType="INTEGER"/>
+            <result property="sort" column="sort" jdbcType="INTEGER"/>
+            <result property="title" column="title" jdbcType="VARCHAR"/>
+            <result property="type" column="type" jdbcType="VARCHAR"/>
+            <result property="rid" column="rid" jdbcType="INTEGER"/>
+            <result property="createdAt" column="created_at" jdbcType="TIMESTAMP"/>
+    </resultMap>
+
+    <sql id="Base_Column_List">
+        id,course_id,
+        sort,title,type,
+        rid,created_at
+    </sql>
+</mapper>