internal: move packages under this directory (#5836)

* Rename pkg -> internal

* Rename routes -> route

* Move route -> internal/route

* Rename models -> db

* Move db -> internal/db

* Fix route2 -> route

* Move cmd -> internal/cmd

* Bump version

internal/db/admin.go

@@ -0,0 +1,118 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package db
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/unknwon/com"
+	log "gopkg.in/clog.v1"
+	"xorm.io/xorm"
+
+	"gogs.io/gogs/internal/tool"
+)
+
+type NoticeType int
+
+const (
+	NOTICE_REPOSITORY NoticeType = iota + 1
+)
+
+// Notice represents a system notice for admin.
+type Notice struct {
+	ID          int64
+	Type        NoticeType
+	Description string    `xorm:"TEXT"`
+	Created     time.Time `xorm:"-" json:"-"`
+	CreatedUnix int64
+}
+
+func (n *Notice) BeforeInsert() {
+	n.CreatedUnix = time.Now().Unix()
+}
+
+func (n *Notice) AfterSet(colName string, _ xorm.Cell) {
+	switch colName {
+	case "created_unix":
+		n.Created = time.Unix(n.CreatedUnix, 0).Local()
+	}
+}
+
+// TrStr returns a translation format string.
+func (n *Notice) TrStr() string {
+	return "admin.notices.type_" + com.ToStr(n.Type)
+}
+
+// CreateNotice creates new system notice.
+func CreateNotice(tp NoticeType, desc string) error {
+	// Prevent panic if database connection is not available at this point
+	if x == nil {
+		return fmt.Errorf("could not save notice due database connection not being available: %d %s", tp, desc)
+	}
+
+	n := &Notice{
+		Type:        tp,
+		Description: desc,
+	}
+	_, err := x.Insert(n)
+	return err
+}
+
+// CreateRepositoryNotice creates new system notice with type NOTICE_REPOSITORY.
+func CreateRepositoryNotice(desc string) error {
+	return CreateNotice(NOTICE_REPOSITORY, desc)
+}
+
+// RemoveAllWithNotice removes all directories in given path and
+// creates a system notice when error occurs.
+func RemoveAllWithNotice(title, path string) {
+	if err := os.RemoveAll(path); err != nil {
+		desc := fmt.Sprintf("%s [%s]: %v", title, path, err)
+		log.Warn(desc)
+		if err = CreateRepositoryNotice(desc); err != nil {
+			log.Error(2, "CreateRepositoryNotice: %v", err)
+		}
+	}
+}
+
+// CountNotices returns number of notices.
+func CountNotices() int64 {
+	count, _ := x.Count(new(Notice))
+	return count
+}
+
+// Notices returns number of notices in given page.
+func Notices(page, pageSize int) ([]*Notice, error) {
+	notices := make([]*Notice, 0, pageSize)
+	return notices, x.Limit(pageSize, (page-1)*pageSize).Desc("id").Find(&notices)
+}
+
+// DeleteNotice deletes a system notice by given ID.
+func DeleteNotice(id int64) error {
+	_, err := x.Id(id).Delete(new(Notice))
+	return err
+}
+
+// DeleteNotices deletes all notices with ID from start to end (inclusive).
+func DeleteNotices(start, end int64) error {
+	sess := x.Where("id >= ?", start)
+	if end > 0 {
+		sess.And("id <= ?", end)
+	}
+	_, err := sess.Delete(new(Notice))
+	return err
+}
+
+// DeleteNoticesByIDs deletes notices by given IDs.
+func DeleteNoticesByIDs(ids []int64) error {
+	if len(ids) == 0 {
+		return nil
+	}
+	_, err := x.Where("id IN (" + strings.Join(tool.Int64sToStrings(ids), ",") + ")").Delete(new(Notice))
+	return err
+}