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video.go
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video.go
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package dao
import (
"context"
"fmt"
"time"
"github.com/sunflower10086/TikTok/http/internal/dao/db"
"github.com/sunflower10086/TikTok/http/internal/models"
"github.com/sunflower10086/TikTok/http/internal/models/modeltoimpl"
"github.com/sunflower10086/TikTok/http/internal/video"
)
// 查询发布列表
func QueryPublishList(ctx context.Context, userID int64) ([]*video.Video, error) {
videos := make([]*models.Video, 0) // 数据层
videos2 := make([]*video.Video, 0) // 业务层
var user *models.User // 业务层
conn := db.GetDB().WithContext(ctx)
// 查询发布列表
err := conn.Find(&videos, "author_id = ?", userID).Error
if err != nil {
return nil, err
}
// 查询发布者信息
err = conn.Preload("OtherInfo").Find(&user, "id = ?", userID).Error
if err != nil {
return nil, err
}
// 获取实时User信息
err = RealTimeUser(ctx, user)
if err != nil {
return nil, err
}
// 获取每个视频的实时信息并将数据层映射到业务层
for _, v := range videos {
var v3 *video.Video // 业务层
// 获取实时Video信息
err = RealTimeVideo(ctx, v)
if err != nil {
return nil, err
}
// 映射到业务层
v3, err = modeltoimpl.MapVideo(v)
if err != nil {
return nil, err
}
v3.Author, err = modeltoimpl.MapUser(user)
if err != nil {
return nil, err
}
videos2 = append(videos2, v3)
}
return videos2, nil
}
// 获取视频流
func QueryFeedVideo(ctx context.Context, limit int, latestTime int64) ([]*video.Video, error) {
videos := make([]*models.Video, limit) // 数据层
videos2 := make([]*video.Video, 0) // 业务层
conn := db.GetDB().WithContext(ctx)
// 返回按投稿时间倒序的视频列表,视频数由服务端控制,单次最多30个
err := conn.Preload("User.OtherInfo").
Preload("User").
Limit(limit).Order("created_at desc").
Where("created_at <= ?", latestTime).
Find(&videos).Error
if err != nil {
return nil, err
}
// 获取每个视频的实时信息并将数据层映射到业务层
for _, v := range videos {
var user2 *video.User // 业务层
var v3 *video.Video // 业务层
if v == nil {
continue
}
// 获取实时的video信息和User信息
err = RealTimeVideo(ctx, v)
if err != nil {
return nil, err
}
err = RealTimeUser(ctx, &v.User)
if err != nil {
return nil, err
}
// 映射到业务层
v3, err = modeltoimpl.MapVideo(v)
if err != nil {
return nil, err
}
user2, err = modeltoimpl.MapUser(&v.User)
if err != nil {
return nil, err
}
v3.Author = user2
videos2 = append(videos2, v3)
}
return videos2, nil
}
// 保存用户发布的视频
func SaveVideo(ctx context.Context, downUrl, title string, userId int64) error {
var v models.Video
fmt.Println(userId)
v.User = models.User{
CustomBaseModel: models.CustomBaseModel{ID: userId},
}
v.AuthorID = userId
v.PlayURL = downUrl
v.Title = title
v.CreatedAt = time.Now().Unix()
return db.GetDB().Create(&v).Error
}