Move controller and page to new package.

controller/page.go

@@ -0,0 +1,83 @@
+package controller
+
+import (
+	"html/template"
+	"net/http"
+	"time"
+
+	"goweb/auth"
+	"goweb/msg"
+	"goweb/pager"
+
+	echomw "github.com/labstack/echo/v4/middleware"
+
+	"github.com/labstack/echo/v4"
+)
+
+const (
+	DefaultItemsPerPage = 20
+)
+
+type Page struct {
+	AppName    string
+	Title      string
+	Context    echo.Context
+	Reverse    func(name string, params ...interface{}) string
+	Path       string
+	Data       interface{}
+	Layout     string
+	Name       string
+	IsHome     bool
+	IsAuth     bool
+	StatusCode int
+	Metatags   struct {
+		Description string
+		Keywords    []string
+	}
+	Pager   pager.Pager
+	CSRF    string
+	Headers map[string]string
+	Cache   struct {
+		Enabled    bool
+		Expiration time.Duration
+		Tags       []string
+	}
+	RequestID string
+}
+
+func NewPage(c echo.Context) Page {
+	p := Page{
+		Context:    c,
+		Reverse:    c.Echo().Reverse,
+		Path:       c.Request().URL.Path,
+		StatusCode: http.StatusOK,
+		Pager:      pager.NewPager(c, DefaultItemsPerPage),
+		Headers:    make(map[string]string),
+		RequestID:  c.Response().Header().Get(echo.HeaderXRequestID),
+	}
+
+	p.IsHome = p.Path == "/"
+
+	if csrf := c.Get(echomw.DefaultCSRFConfig.ContextKey); csrf != nil {
+		p.CSRF = csrf.(string)
+	}
+
+	if _, err := auth.GetUserID(c); err == nil {
+		p.IsAuth = true
+	}
+
+	return p
+}
+
+func (p Page) SetMessage(typ msg.Type, value string) {
+	msg.Set(p.Context, typ, value)
+}
+
+func (p Page) GetMessages(typ msg.Type) []template.HTML {
+	strs := msg.Get(p.Context, typ)
+	ret := make([]template.HTML, len(strs))
+	for k, v := range strs {
+		ret[k] = template.HTML(v)
+	}
+	return ret
+}