gosora/common/page_store.go

176 lines
4.8 KiB
Go

package common
import (
"database/sql"
"strconv"
"strings"
"github.com/Azareal/Gosora/query_gen"
)
type CustomPageStmts struct {
update *sql.Stmt
create *sql.Stmt
}
var customPageStmts CustomPageStmts
func init() {
DbInits.Add(func(acc *qgen.Accumulator) error {
customPageStmts = CustomPageStmts{
update: acc.Update("pages").Set("name = ?, title = ?, body = ?, allowedGroups = ?, menuID = ?").Where("pid = ?").Prepare(),
create: acc.Insert("pages").Columns("name, title, body, allowedGroups, menuID").Fields("?,?,?,?,?").Prepare(),
}
return acc.FirstError()
})
}
type CustomPage struct {
ID int
Name string // TODO: Let admins put pages in "virtual subdirectories"
Title string
Body string
AllowedGroups []int
MenuID int
}
func BlankCustomPage() *CustomPage {
return new(CustomPage)
}
func (page *CustomPage) AddAllowedGroup(gid int) {
page.AllowedGroups = append(page.AllowedGroups, gid)
}
func (page *CustomPage) getRawAllowedGroups() (rawAllowedGroups string) {
for _, group := range page.AllowedGroups {
rawAllowedGroups += strconv.Itoa(group) + ","
}
if len(rawAllowedGroups) > 0 {
rawAllowedGroups = rawAllowedGroups[:len(rawAllowedGroups)-1]
}
return rawAllowedGroups
}
func (page *CustomPage) Commit() error {
_, err := customPageStmts.update.Exec(page.Name, page.Title, page.Body, page.getRawAllowedGroups(), page.MenuID, page.ID)
Pages.Reload(page.ID)
return err
}
func (page *CustomPage) Create() (int, error) {
res, err := customPageStmts.create.Exec(page.Name, page.Title, page.Body, page.getRawAllowedGroups(), page.MenuID)
if err != nil {
return 0, err
}
pid64, err := res.LastInsertId()
return int(pid64), err
}
var Pages PageStore
// Holds the custom pages, but doesn't include the template pages in /pages/ which are a lot more flexible yet harder to use and which are too risky security-wise to make editable in the Control Panel
type PageStore interface {
Count() (count int)
Get(id int) (*CustomPage, error)
GetByName(name string) (*CustomPage, error)
GetOffset(offset int, perPage int) (pages []*CustomPage, err error)
Reload(id int) error
Delete(id int) error
}
// TODO: Add a cache to this to save on the queries
type DefaultPageStore struct {
get *sql.Stmt
getByName *sql.Stmt
getOffset *sql.Stmt
count *sql.Stmt
delete *sql.Stmt
}
func NewDefaultPageStore(acc *qgen.Accumulator) (*DefaultPageStore, error) {
return &DefaultPageStore{
get: acc.Select("pages").Columns("name, title, body, allowedGroups, menuID").Where("pid = ?").Prepare(),
getByName: acc.Select("pages").Columns("pid, name, title, body, allowedGroups, menuID").Where("name = ?").Prepare(),
getOffset: acc.Select("pages").Columns("pid, name, title, body, allowedGroups, menuID").Orderby("pid DESC").Limit("?,?").Prepare(),
count: acc.Count("pages").Prepare(),
delete: acc.Delete("pages").Where("pid = ?").Prepare(),
}, acc.FirstError()
}
func (s *DefaultPageStore) Count() (count int) {
err := s.count.QueryRow().Scan(&count)
if err != nil {
LogError(err)
}
return count
}
func (s *DefaultPageStore) parseAllowedGroups(raw string, page *CustomPage) error {
if raw == "" {
return nil
}
for _, sgroup := range strings.Split(raw, ",") {
group, err := strconv.Atoi(sgroup)
if err != nil {
return err
}
page.AddAllowedGroup(group)
}
return nil
}
func (store *DefaultPageStore) Get(id int) (*CustomPage, error) {
page := &CustomPage{ID: id}
rawAllowedGroups := ""
err := store.get.QueryRow(id).Scan(&page.Name, &page.Title, &page.Body, &rawAllowedGroups, &page.MenuID)
if err != nil {
return nil, err
}
return page, store.parseAllowedGroups(rawAllowedGroups, page)
}
func (store *DefaultPageStore) GetByName(name string) (*CustomPage, error) {
page := BlankCustomPage()
rawAllowedGroups := ""
err := store.getByName.QueryRow(name).Scan(&page.ID, &page.Name, &page.Title, &page.Body, &rawAllowedGroups, &page.MenuID)
if err != nil {
return nil, err
}
return page, store.parseAllowedGroups(rawAllowedGroups, page)
}
func (store *DefaultPageStore) GetOffset(offset int, perPage int) (pages []*CustomPage, err error) {
rows, err := store.getOffset.Query(offset, perPage)
if err != nil {
return pages, err
}
defer rows.Close()
for rows.Next() {
page := &CustomPage{ID: 0}
rawAllowedGroups := ""
err := rows.Scan(&page.ID, &page.Name, &page.Title, &page.Body, &rawAllowedGroups, &page.MenuID)
if err != nil {
return pages, err
}
err = store.parseAllowedGroups(rawAllowedGroups, page)
if err != nil {
return pages, err
}
pages = append(pages, page)
}
return pages, rows.Err()
}
// Always returns nil as there's currently no cache
func (store *DefaultPageStore) Reload(id int) error {
return nil
}
func (store *DefaultPageStore) Delete(id int) error {
_, err := store.delete.Exec(id)
return err
}