Overhaul [1/n]

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/handler/api/background/info.go

@@ -0,0 +1,49 @@
+package background
+
+import (
+	"honoka-chan/internal/schema/api/background"
+	"honoka-chan/internal/session"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+func backgroundInfo(ctx *gin.Context) (res any, err error) {
+	ss := session.Get(ctx)
+
+	var backgroundList []int
+	err = ss.MainEng.Table("background_m").Cols("background_id").Find(&backgroundList)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	var backgroundID int
+	_, err = ss.UserEng.Table("user_pref").Where("user_id = ?", ss.UserID).Cols("background_id").Get(&backgroundID)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	backgroundsList := []background.Info{}
+	for _, id := range backgroundList {
+		isSet := false
+		if id == backgroundID {
+			isSet = true
+		}
+		backgroundsList = append(backgroundsList, background.Info{
+			BackgroundID: id,
+			IsSet:        isSet,
+			InsertDate:   time.Now().Format("2006-01-02 03:04:05"),
+		})
+	}
+
+	res = background.InfoResp{
+		Result: background.InfoData{
+			BackgroundInfo: backgroundsList,
+		},
+		Status:     200,
+		CommandNum: false,
+		TimeStamp:  time.Now().Unix(),
+	}
+
+	return res, err
+}