Add manage page for viewing the main log (non-access)

frontend/sass/global/_manage.scss

@@ -39,4 +39,12 @@ input.config-text {
 .warning, div.config-status {
 	color:red;
 	font-weight: bold;
+}
+
+textarea.viewlog {
+	width: 80%;
+	white-space: pre;
+	display: block;
+	margin-left: auto;
+	margin-right: auto;
 }

html/css/global.css

@@ -315,6 +315,14 @@ input.config-text {
   font-weight: bold;
 }
 
+textarea.viewlog {
+  width: 80%;
+  white-space: pre;
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
 .lightbox {
   background: #CDCDCD;
   border: 1px solid #000;

pkg/gctemplates/templates.go

@@ -33,6 +33,7 @@ var (
 	ManageLogin       *template.Template
 	ManageReports     *template.Template
 	ManageStaff       *template.Template
+	ManageViewLog     *template.Template
 	MoveThreadPage    *template.Template
 	PageHeader        *template.Template
 	PageFooter        *template.Template
@@ -229,6 +230,12 @@ func templateLoading(t string, buildAll bool) error {
 			return templateError("manage_staff.html", err)
 		}
 	}
+	if buildAll || t == "manageviewlog" {
+		ManageViewLog, err = LoadTemplate("manage_viewlog.html")
+		if err != nil {
+			return templateError("manage_viewlog.html", err)
+		}
+	}
 	if buildAll || t == "movethreadpage" {
 		MoveThreadPage, err = LoadTemplate("movethreadpage.html", "page_header.html", "topbar.html", "page_footer.html")
 		if err != nil {

pkg/manage/actionsAdminPerm.go

@@ -5,8 +5,10 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"io"
 	"net/http"
 	"os"
+	"path"
 	"strconv"
 
 	"github.com/gochan-org/gochan/pkg/building"
@@ -628,6 +630,32 @@ func registerAdminPages() {
 				}
 				infoEv.Send()
 				return managePageBuffer.String(), err
-			}},
+			},
+		},
+		Action{
+			ID:          "viewlog",
+			Title:       "View log",
+			Permissions: AdminPerms,
+			Callback: func(writer http.ResponseWriter, request *http.Request, staff *gcsql.Staff, wantsJSON bool, infoEv *zerolog.Event,
+				errEv *zerolog.Event) (output interface{}, err error) {
+				logPath := path.Join(config.GetSystemCriticalConfig().LogDir, "gochan.log")
+				logFile, err := os.Open(logPath)
+				if err != nil {
+					errEv.Err(err).Caller().Send()
+					return "", errors.New("unable to open log file")
+				}
+				defer logFile.Close()
+				ba, err := io.ReadAll(logFile)
+				if err != nil {
+					errEv.Err(err).Caller().Send()
+					return "", err
+				}
+				buf := bytes.NewBufferString("")
+				err = serverutil.MinifyTemplate(gctemplates.ManageViewLog, map[string]interface{}{
+					"logText": string(ba),
+				}, buf, "text/html")
+				return buf.String(), err
+			},
+		},
 	)
 }

templates/manage_viewlog.html

@@ -0,0 +1 @@
+<textarea class="viewlog" rows="24">{{.logText}}</textarea>