Implement greet inbox and outbox

- Add user_greet model and startup table sync
- Implement /greet/user and /greet/delete handlers
- Implement noticeFriendGreeting inbox and noticeUserGreetingHistory outbox
- Return peer profile and center unit info for greeting notices
- Update login topInfo friend greet counters from unread inbox messages

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

internal/handler/greet/delete.go

@@ -0,0 +1,66 @@
+package greet
+
+import (
+	"errors"
+
+	"honoka-chan/internal/middleware"
+	usermodel "honoka-chan/internal/model/user"
+	"honoka-chan/internal/router"
+	greetschema "honoka-chan/internal/schema/greet"
+	"honoka-chan/internal/session"
+	honokautils "honoka-chan/internal/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+func deleteMail(ctx *gin.Context) {
+	ss := session.Get(ctx)
+	defer ss.Finalize()
+
+	req := greetschema.DeleteReq{}
+	err := honokautils.ParseRequestData(ctx, &req)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	notice := usermodel.UserGreet{}
+	has, err := ss.UserEng.Table(new(usermodel.UserGreet)).
+		Where("notice_id = ?", req.MailNoticeID).
+		Get(&notice)
+	if ss.CheckErr(err) {
+		return
+	}
+	if !has {
+		ss.CheckErr(errors.New("notice not found"))
+		return
+	}
+
+	switch {
+	case req.IsSendMail && notice.AffectorID == ss.UserID:
+		_, err = ss.UserEng.Table(new(usermodel.UserGreet)).
+			Where("notice_id = ?", req.MailNoticeID).
+			Cols("deleted_from_affector").
+			Update(&usermodel.UserGreet{DeletedFromAffector: true})
+	case !req.IsSendMail && notice.ReceiverID == ss.UserID:
+		_, err = ss.UserEng.Table(new(usermodel.UserGreet)).
+			Where("notice_id = ?", req.MailNoticeID).
+			Cols("deleted_from_receiver").
+			Update(&usermodel.UserGreet{DeletedFromReceiver: true})
+	default:
+		ss.CheckErr(errors.New("cannot delete this notice"))
+		return
+	}
+	if ss.CheckErr(err) {
+		return
+	}
+
+	ss.Respond(greetschema.EmptyResp{
+		ResponseData: []any{},
+		ReleaseInfo:  []any{},
+		StatusCode:   200,
+	})
+}
+
+func init() {
+	router.AddHandler("main.php", "POST", "/greet/delete", middleware.Common, deleteMail)
+}