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admin.go
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/
admin.go
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package goadmin
import (
"fmt"
"net/url"
_ "github.com/golang-migrate/migrate/v4/source/aws_s3"
_ "github.com/golang-migrate/migrate/v4/source/file"
_ "github.com/golang-migrate/migrate/v4/source/github"
_ "github.com/golang-migrate/migrate/v4/source/github_ee"
_ "github.com/golang-migrate/migrate/v4/source/gitlab"
_ "github.com/golang-migrate/migrate/v4/source/go_bindata"
_ "github.com/golang-migrate/migrate/v4/source/godoc_vfs"
_ "github.com/golang-migrate/migrate/v4/source/google_cloud_storage"
_ "github.com/golang-migrate/migrate/v4/source/stub"
"github.com/CloudyKit/jet"
"github.com/golang-migrate/migrate/v4"
"github.com/golang-migrate/migrate/v4/database/postgres"
"github.com/labstack/echo/v4"
"github.com/pkg/errors"
)
type Admin struct {
*Config
e *echo.Echo
static *echo.Group
admin *echo.Group
baseURL *url.URL
}
func (a *Admin) Serve() error {
if err := a.hasEcho(); err != nil {
return err
}
addr := fmt.Sprintf("%s:%d", a.Host, a.Port)
return a.e.Start(addr)
}
func (a *Admin) Echo() *echo.Echo {
return a.e
}
func (a *Admin) Static() *echo.Group {
return a.static
}
func (a *Admin) Admin() *echo.Group {
return a.admin
}
func (a *Admin) configure() error {
a.configureMiddleware()
a.configureRenderer()
a.configureErrorHandler()
a.configureAssets()
a.configureRoutes()
if err := a.configureDatabase(); err != nil {
return errors.Wrap(err, "configure database failed")
}
return nil
}
func (a *Admin) configureDatabase() error {
driver, err := postgres.WithInstance(a.DBConfig.DB, &postgres.Config{
MigrationsTable: MigrationsTable,
})
if err != nil {
return errors.Wrap(err, "creating postgres instance failed")
}
mig, err := migrate.NewWithDatabaseInstance(
a.DBConfig.MigrationsPath,
a.DBConfig.Driver,
driver,
)
if err != nil {
return errors.Wrap(err, "creating database instance failed")
}
err = mig.Up()
if err != nil && err != migrate.ErrNoChange {
return errors.Wrap(err, "to migrate up failed")
}
return nil
}
func (a *Admin) configureRoutes() {
a.admin = a.e.Group(a.baseURL.Path, withViewData)
a.admin.GET(LoginURL, WrapHandler(Login))
a.admin.POST(LoginURL, WrapHandler(Login))
auth := AuthByCookie
a.admin.Any(LogoutURL, WrapHandler(Logout), auth)
a.admin.GET(DashboardURL, WrapHandler(Dashboard), auth)
a.admin.GET(UserListURL, WrapHandler(UserList), auth)
a.admin.GET(UserCreateURL, WrapHandler(UserCreate), auth)
a.admin.POST(UserCreateURL, WrapHandler(UserCreate), auth)
a.admin.GET(UserDeleteURL, WrapHandler(UserDelete), auth)
a.admin.GET(UserUpdateURL, WrapHandler(UserUpdate), auth)
a.admin.POST(UserUpdateURL, WrapHandler(UserUpdate), auth)
}
func (a *Admin) configureMiddleware() {
for _, mw := range a.Middleware {
a.e.Use(mw)
}
a.e.Use(withAdminContext(a))
}
func (a *Admin) configureErrorHandler() {
a.e.HTTPErrorHandler = errorHandler
}
func (a *Admin) configureRenderer() {
renderer := &Renderer{
Views: jet.NewHTMLSet(a.ViewsPath),
}
renderer.Views.SetDevelopmentMode(a.DevMode)
renderer.Views.AddGlobal("adminPath", a.baseURL.Path)
renderer.Views.AddGlobal("loginURL", LoginURL)
renderer.Views.AddGlobal("logoutURL", LogoutURL)
renderer.Views.AddGlobal("userListURL", UserListURL)
a.e.Renderer = renderer
}
func (a *Admin) configureAssets() {
if a.AssetsPath == "" {
a.AssetsPath = DefaultAssetsPath
}
if a.ViewsPath == "" {
a.ViewsPath = DefaultViewsPath
}
a.static = a.e.Group(a.baseURL.Path + "/assets")
a.static.Static("/", a.AssetsPath)
}
func (a *Admin) hasEcho() error {
if a.e == nil {
return errors.New("please use goadmin.New when creating Admin")
}
return nil
}
func New(config Config) (*Admin, error) {
if err := config.Validate(); err != nil {
return nil, errors.Wrap(err, "validation failed")
}
baseURL, err := url.Parse(config.BaseURL)
if err != nil {
return nil, errors.Wrap(err, "parse base url failed")
}
a := &Admin{
Config: &config,
e: echo.New(),
baseURL: baseURL,
}
if err := a.configure(); err != nil {
return nil, err
}
if err := a.LoadSources(); err != nil {
return nil, err
}
return a, nil
}