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58 lines
1.4 KiB
58 lines
1.4 KiB
package story
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import (
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"database/sql"
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"fmt"
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"net/http"
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"time"
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"github.com/imdotdev/im.dev/server/pkg/db"
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"github.com/imdotdev/im.dev/server/pkg/e"
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)
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func Like(storyID string, userId string) *e.Error {
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exist := Exist(storyID)
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if !exist {
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return e.New(http.StatusNotFound, e.NotFound)
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}
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tbl := getStorySqlTable(storyID)
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// 查询当前like状态
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liked := GetLiked(storyID, userId)
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if liked {
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// 已经喜欢过该篇文章，更改为不喜欢
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_, err := db.Conn.Exec("DELETE FROM likes WHERE story_id=? and user_id=?", storyID, userId)
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if err != nil {
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return e.New(http.StatusInternalServerError, e.Internal)
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}
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db.Conn.Exec(fmt.Sprintf("UPDATE %s SET likes=likes-1 WHERE id=?", tbl), storyID)
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} else {
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_, err := db.Conn.Exec("INSERT INTO likes (story_id,user_id,created) VALUES (?,?,?)", storyID, userId, time.Now())
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if err != nil {
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logger.Warn("add like error", "error", err)
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return e.New(http.StatusInternalServerError, e.Internal)
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}
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db.Conn.Exec(fmt.Sprintf("UPDATE %s SET likes=likes+1 WHERE id=?", tbl), storyID)
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}
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return nil
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}
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func GetLiked(storyID string, userID string) bool {
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liked := false
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var nid string
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err := db.Conn.QueryRow("SELECT story_id FROM likes WHERE story_id=? and user_id=?", storyID, userID).Scan(&nid)
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if err != nil && err != sql.ErrNoRows {
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logger.Warn("query story like error", "error", err)
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return false
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}
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if nid == storyID {
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liked = true
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}
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return liked
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}
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