463 lines
19 KiB
Go
463 lines
19 KiB
Go
package api
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import (
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"fmt"
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"log"
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"strings"
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"git.satori.love/gameui/webp/models"
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"github.com/graphql-go/graphql"
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"github.com/graphql-go/graphql/language/ast"
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"github.com/jmoiron/sqlx"
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"github.com/mitchellh/mapstructure"
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)
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func NewSchema(config Config) (graphql.Schema, error) {
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// 打开数据库连接
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connection, err := sqlx.Connect("mysql", fmt.Sprintf(
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"%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local",
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config.Mysql.UserName,
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config.Mysql.Password,
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config.Mysql.Host,
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config.Mysql.Port,
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config.Mysql.Database,
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))
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if err != nil {
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log.Fatalln("连接数据库失败", err)
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}
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// 文章的可选字段
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article := graphql.NewObject(graphql.ObjectConfig{
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Name: "Article",
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Description: "文章信息",
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Fields: graphql.Fields{
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"id": &graphql.Field{Type: graphql.Int, Description: "文章ID"},
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"title": &graphql.Field{Type: graphql.String, Description: "文章标题"},
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"tags": &graphql.Field{Type: graphql.String, Description: "文章标签"},
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"create_time": &graphql.Field{Type: graphql.DateTime, Description: "文章创建时间"},
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"update_time": &graphql.Field{Type: graphql.DateTime, Description: "文章更新时间"},
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},
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})
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// 用户的可选字段
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user := graphql.NewObject(graphql.ObjectConfig{
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Name: "User",
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Description: "用户信息",
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Fields: graphql.Fields{
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"id": &graphql.Field{Type: graphql.Int, Description: "用户ID"},
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"user_name": &graphql.Field{Type: graphql.String, Description: "用户名"},
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"avatar": &graphql.Field{Type: graphql.String, Description: "用户头像"},
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"rank": &graphql.Field{Type: graphql.String, Description: "用户等级"},
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"price": &graphql.Field{Type: graphql.Float, Description: "用户金币"},
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"create_time": &graphql.Field{Type: graphql.DateTime, Description: "用户创建时间"},
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"update_time": &graphql.Field{Type: graphql.DateTime, Description: "用户更新时间"},
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},
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})
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// 图像中的文字提取
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text := graphql.NewObject(graphql.ObjectConfig{
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Name: "Text",
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Description: "图像中的文字提取",
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Fields: graphql.Fields{
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"text": &graphql.Field{Type: graphql.String, Description: "文字内容"},
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"confidence": &graphql.Field{Type: graphql.Float, Description: "置信度"},
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"coordinate": &graphql.Field{Type: &graphql.List{OfType: graphql.NewList(graphql.Float)}, Description: "文字坐标"},
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},
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})
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// 图像的可选字段
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image := graphql.NewObject(graphql.ObjectConfig{
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Name: "Image",
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Description: "图像信息",
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Fields: graphql.Fields{
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"id": &graphql.Field{Type: graphql.Int, Description: "图像ID"},
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"width": &graphql.Field{Type: graphql.Int, Description: "图像宽度"},
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"height": &graphql.Field{Type: graphql.Int, Description: "图像高度"},
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"content": &graphql.Field{Type: graphql.String, Description: "图像内容"},
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"remark": &graphql.Field{Type: graphql.String, Description: "图像备注"},
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"description": &graphql.Field{Type: graphql.String, Description: "图像描述"},
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"tags": &graphql.Field{Type: graphql.String, Description: "图像标签"},
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"rank": &graphql.Field{Type: graphql.String, Description: "图像等级"},
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"text": &graphql.Field{Type: graphql.NewList(text), Description: "图像中的文字"},
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"comment_num": &graphql.Field{Type: graphql.Int, Description: "评论数"},
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"article_category_top_id": &graphql.Field{Type: graphql.Int, Description: "文章分类顶级ID"},
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"praise_count": &graphql.Field{Type: graphql.Int, Description: "点赞数"},
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"collect_count": &graphql.Field{Type: graphql.Int, Description: "收藏数"},
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"create_time": &graphql.Field{Type: graphql.DateTime, Description: "图像创建时间"},
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"update_time": &graphql.Field{Type: graphql.DateTime, Description: "图像更新时间"},
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"user": &graphql.Field{Type: user, Description: "图像所属用户"},
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"article": &graphql.Field{Type: article, Description: "图像所属文章"},
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},
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})
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// 将 list 中的字段提取出来用于查询
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get_fields := func(requestedFields []ast.Selection) (fields []string) {
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for _, field := range requestedFields {
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fieldAST, ok := field.(*ast.Field)
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if ok && fieldAST.Name.Value == "list" {
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for _, field := range fieldAST.SelectionSet.Selections {
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fieldAST, ok := field.(*ast.Field)
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if ok {
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if fieldAST.Name.Value == "user" {
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fields = append(fields, "user_id")
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continue
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}
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if fieldAST.Name.Value == "article" {
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fields = append(fields, "article_id")
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continue
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}
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fields = append(fields, fieldAST.Name.Value)
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}
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}
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}
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}
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return fields
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}
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schema, err := graphql.NewSchema(graphql.SchemaConfig{Query: graphql.NewObject(graphql.ObjectConfig{Name: "RootQuery", Fields: graphql.Fields{
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"users": &graphql.Field{
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Name: "users",
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Description: "用户列表",
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Type: graphql.NewObject(graphql.ObjectConfig{
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Name: "UserConnection",
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Description: "条件筛选用户列表",
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Fields: graphql.Fields{
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"list": &graphql.Field{Type: graphql.NewList(user), Description: "用户列表"},
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"total": &graphql.Field{Type: graphql.Int, Description: "用户总数"},
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},
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}),
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Args: graphql.FieldConfigArgument{
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"id": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选用户中指定ID的"},
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"user_name": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选用户中含有指定用户名的"},
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"avatar": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选用户中含有指定头像的"},
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"rank": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选用户中含有指定等级的"},
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"create_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选用户中创建时间等于指定值的"},
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"update_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选用户中更新时间等于指定值的"},
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"text": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定文字的"},
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"first": &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的前n個元素)"},
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"last": &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的最後n個元素)"},
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"after": &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之後的元素)"},
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"before": &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之前的元素)"},
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},
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Resolve: func(p graphql.ResolveParams) (interface{}, error) {
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fields := strings.Join(get_fields(p.Info.FieldASTs[0].SelectionSet.Selections), ",")
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var where []string
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if p.Args["id"] != nil {
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where = append(where, fmt.Sprintf("id=%d", p.Args["id"]))
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}
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if p.Args["user_name"] != nil {
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where = append(where, fmt.Sprintf("user_name='%s'", p.Args["user_name"]))
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}
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// 筛选条件
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where_str := strings.Join(where, " AND ")
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if where_str != "" {
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where_str = "WHERE " + where_str
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}
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var query strings.Builder
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var users []User
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var total int
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query.WriteString(fmt.Sprintf("SELECT %s FROM web_member %s LIMIT %d OFFSET %d", fields, where_str, 10, 0))
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if err := connection.Select(&users, query.String()); err != nil {
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fmt.Println("获取用户列表失败", err)
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return nil, err
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}
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if len(users) > 0 {
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query.Reset()
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query.WriteString(fmt.Sprintf("SELECT COUNT(*) FROM web_member %s", where_str))
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if err := connection.Get(&total, query.String()); err != nil {
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fmt.Println("获取用户总数失败", err)
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return nil, err
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}
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}
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return map[string]interface{}{
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"list": users,
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"total": total,
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}, nil
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},
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},
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"images": &graphql.Field{
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Name: "images",
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Description: "图像列表",
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Type: graphql.NewObject(graphql.ObjectConfig{
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Name: "ImageConnection",
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Description: "条件筛选图像列表",
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Fields: graphql.Fields{
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"list": &graphql.Field{Type: graphql.NewList(image), Description: "图像列表"},
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"total": &graphql.Field{Type: graphql.Int, Description: "图像总数"},
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},
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}),
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Args: graphql.FieldConfigArgument{
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"preference": &graphql.ArgumentConfig{Type: graphql.Int, Description: "按照指定用户ID的偏好推荐图像"},
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"similar": &graphql.ArgumentConfig{Type: graphql.Int, Description: "获取与指定ID图像相似的图像"},
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"id": &graphql.ArgumentConfig{Type: graphql.Int, Description: "获取指定ID的图像"},
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"width": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中指定宽度的"},
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"height": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中指定高度的"},
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"content": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定内容的"},
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"remark": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定备注的"},
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"description": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定描述的"},
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"tags": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定标签的"},
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"rank": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定等级的"},
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"text": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选图像中含有指定文字的"},
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"comment_num": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中评论数等于指定值的"},
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"praise_count": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中点赞数等于指定值的"},
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"collect_count": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中收藏数等于指定值的"},
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"article_id": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中属于指定文章ID的"},
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"user_id": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选图像中属于指定用户ID的"},
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"create_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选图像中创建时间等于指定值的"},
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"update_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选图像中更新时间等于指定值的"},
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"first": &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的前n個元素)"},
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"last": &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的最後n個元素)"},
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"after": &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之後的元素)"},
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"before": &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之前的元素)"},
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},
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Resolve: func(p graphql.ResolveParams) (interface{}, error) {
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// 定义参数结构体
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var args struct {
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First int
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Last int
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After string
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Before string
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Text string
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Similar int
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Preference int
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}
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mapstructure.Decode(p.Args, &args)
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// 参数到 SQL 格式字符串的映射
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var argToSQLFormat = map[string]string{
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"id": "id=%d",
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"width": "width=%d",
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"height": "height=%d",
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"content": "content='%s'",
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"remark": "remark='%s'",
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"description": "description='%s'",
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"tags": "tags='%s'",
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"rank": "rank='%s'",
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"comment_num": "comment_num=%d",
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"praise_count": "praise_count=%d",
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"collect_count": "collect_count=%d",
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"article_id": "article_id=%d",
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"user_id": "user_id=%d",
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"create_time": "create_time='%s'",
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"update_time": "update_time='%s'",
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}
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// 筛选条件
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var where []string
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for arg, format := range argToSQLFormat {
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if p.Args[arg] != nil {
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where = append(where, fmt.Sprintf(format, p.Args[arg]))
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}
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}
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var id_list []string
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// 特殊处理 preference 参数
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if args.Preference != 0 {
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fmt.Println("preference:", args.Preference)
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}
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// 特殊处理 similar 参数
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if args.Similar != 0 {
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id_list := models.GetSimilarImagesIdList(args.Similar, 200)
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ids_str := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(id_list)), ","), "[]")
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if ids_str == "" {
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return map[string]interface{}{"list": []Image{}, "total": 0}, nil
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}
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where = append(where, fmt.Sprintf("id IN (%s) LIMIT %d", ids_str, len(id_list)))
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}
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// 特殊处理 text 参数
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if args.Text != "" {
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resp, err := models.ZincSearch(map[string]interface{}{
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"query": map[string]interface{}{
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"bool": map[string]interface{}{
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"must": []map[string]interface{}{
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{
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"query_string": map[string]string{"query": "text:" + args.Text},
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},
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},
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},
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},
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"sort": []string{
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"_score",
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},
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"from": 0,
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"size": 200,
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})
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if err != nil {
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fmt.Println("ZincSearch 获取图像列表失败", err)
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return nil, err
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}
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id_list = resp.ToIDList(args.First, args.Last, args.After, args.Before)
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id_list_str := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(id_list)), ","), "[]")
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if id_list_str == "" {
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return map[string]interface{}{
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"list": []Image{},
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"total": 0,
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}, nil
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}
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where = append(where, fmt.Sprintf("id IN (%s) LIMIT %d", id_list_str, len(id_list)))
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}
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where_str := strings.Join(where, " AND ")
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if where_str != "" {
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where_str = "WHERE " + where_str
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}
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// 处理翻页参数
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var limit, offset int
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if args.First == 0 && args.Last == 0 {
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limit = 10
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offset = 0
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}
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if args.First != 0 {
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limit = args.First
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offset = 0
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}
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if args.Last != 0 {
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limit = args.Last
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offset = len(id_list) - limit
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}
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where_str += fmt.Sprintf(" LIMIT %d OFFSET %d", limit, offset)
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// 执行查询
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var query strings.Builder
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fields := strings.Join(get_fields(p.Info.FieldASTs[0].SelectionSet.Selections), ",")
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query.WriteString(fmt.Sprintf("SELECT %s FROM web_images %s", fields, where_str))
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var images ImageList
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if err := connection.Select(&images, query.String()); err != nil {
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fmt.Println("获取图像列表失败", err)
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return nil, err
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}
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// 按照 id_list 的顺序重新排序
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if len(id_list) > 0 {
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images.SortByIDList(id_list)
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}
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// 获取用户信息(如果图像列表不为空且请求字段中包含user)
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if len(images) > 0 && strings.Contains(fields, "user") {
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user_ids_str := images.ToAllUserID().ToString()
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var users []User
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if err := connection.Select(&users, fmt.Sprintf("SELECT id,user_name,avatar,rank,create_time,update_time FROM web_member WHERE id IN (%s)", user_ids_str)); err != nil {
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fmt.Println("获取用户列表失败", err)
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return nil, err
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}
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// 将用户信息与图像信息关联
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images.SetUser(users)
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}
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// 获取文章信息(如果图像列表不为空且请求字段中包含article)
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if len(images) > 0 && strings.Contains(fields, "article") {
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article_ids_str := images.ToAllArticleID().ToString()
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var articles []Article
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if err := connection.Select(&articles, fmt.Sprintf("SELECT id,title,tags,create_time,update_time FROM web_article WHERE id IN (%s)", article_ids_str)); err != nil {
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fmt.Println("获取文章列表失败", err)
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return nil, err
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}
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// 将文章信息与图像信息关联
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images.SetArticle(articles)
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}
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return map[string]interface{}{
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"list": images,
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"total": 0,
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}, nil
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},
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},
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"articles": &graphql.Field{
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Name: "Articles",
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Description: "文章列表",
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Type: graphql.NewObject(graphql.ObjectConfig{
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Name: "ArticleConnection",
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Description: "条件筛选文章列表",
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Fields: graphql.Fields{
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"list": &graphql.Field{Type: graphql.NewList(article), Description: "文章列表"},
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"total": &graphql.Field{Type: graphql.Int, Description: "文章总数"},
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},
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}),
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Args: graphql.FieldConfigArgument{
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"id": &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选文章中指定ID的"},
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"title": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选文章中含有指定标题的"},
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"tags": &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选文章中含有指定标签的"},
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"create_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选文章中创建时间等于指定值的"},
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"update_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选文章中更新时间等于指定值的"},
|
|
},
|
|
Resolve: func(p graphql.ResolveParams) (interface{}, error) {
|
|
first := 10 // p.Args["first"]
|
|
after := 0 // p.Args["after"]
|
|
fields := strings.Join(get_fields(p.Info.FieldASTs[0].SelectionSet.Selections), ",")
|
|
var where []string
|
|
if p.Args["id"] != nil {
|
|
where = append(where, fmt.Sprintf("id=%d", p.Args["id"]))
|
|
}
|
|
if p.Args["title"] != nil {
|
|
where = append(where, fmt.Sprintf("title='%s'", p.Args["title"]))
|
|
}
|
|
// 筛选条件
|
|
where_str := strings.Join(where, " AND ")
|
|
if where_str != "" {
|
|
where_str = "WHERE " + where_str
|
|
}
|
|
|
|
var query strings.Builder
|
|
query.WriteString(fmt.Sprintf("SELECT %s FROM web_article %s LIMIT %d OFFSET %d", fields, where_str, first, after))
|
|
// 返回翻页信息
|
|
var articles []Article
|
|
if err := connection.Select(&articles, query.String()); err != nil {
|
|
fmt.Println("获取文章列表失败", err)
|
|
return nil, err
|
|
}
|
|
return map[string]interface{}{
|
|
"list": articles,
|
|
"total": 0,
|
|
}, nil
|
|
},
|
|
},
|
|
"tags": &graphql.Field{
|
|
Name: "tags",
|
|
Description: "标签列表",
|
|
Type: graphql.NewObject(graphql.ObjectConfig{
|
|
Name: "TagConnection",
|
|
Description: "条件筛选标签列表",
|
|
Fields: graphql.Fields{
|
|
"list": &graphql.Field{Type: graphql.NewList(graphql.String), Description: "标签列表"},
|
|
"total": &graphql.Field{Type: graphql.Int, Description: "标签总数"},
|
|
},
|
|
}),
|
|
Args: graphql.FieldConfigArgument{
|
|
"first": &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的前n個元素)"},
|
|
"last": &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的最後n個元素)"},
|
|
"after": &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之後的元素)"},
|
|
"before": &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之前的元素)"},
|
|
},
|
|
Resolve: func(p graphql.ResolveParams) (interface{}, error) {
|
|
var tags []string
|
|
if err := connection.Select(&tags, "SELECT DISTINCT tags FROM web_images LIMIT 10"); err != nil {
|
|
fmt.Println("获取标签列表失败", err)
|
|
return nil, err
|
|
}
|
|
return map[string]interface{}{
|
|
"list": tags,
|
|
"total": 0,
|
|
}, nil
|
|
},
|
|
},
|
|
}})})
|
|
if err != nil {
|
|
return schema, err
|
|
}
|
|
return schema, nil
|
|
}
|