New report router and user reporting refactoring (#25713)

* Added materialized view migration

* Renamed mat view

* Added channel membership mat view and indexes

* Added channel membership mat view and indexes

* Added new index

* WIP

* Simplifying user reporting code

* Created app and API layer for cahnnel reporting, reporting refactoring in general

* New router

* Remobved channel reporting meanwhile

* Upodated autogenerated stuff

* Lint fix

* Fixed typo

* api vet

* i18n fix

* Fixed API vetting and removed channel reporting constants

* yaml

* removed app pagination tests

server/channels/api4/report.go

@@ -0,0 +1,81 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package api4
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/public/shared/mlog"
+)
+
+func (api *API) InitReports() {
+	api.BaseRoutes.Reports.Handle("/users", api.APISessionRequired(getUsersForReporting)).Methods("GET")
+}
+
+func getUsersForReporting(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !(c.IsSystemAdmin() && c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionSysconsoleReadUserManagementUsers)) {
+		c.SetPermissionError(model.PermissionSysconsoleReadUserManagementUsers)
+		return
+	}
+
+	sortColumn := "Username"
+	if r.URL.Query().Get("sort_column") != "" {
+		sortColumn = r.URL.Query().Get("sort_column")
+	}
+
+	pageSize := 50
+	if pageSizeStr, err := strconv.ParseInt(r.URL.Query().Get("page_size"), 10, 64); err == nil {
+		pageSize = int(pageSizeStr)
+	}
+
+	teamFilter := r.URL.Query().Get("team_filter")
+	if !(teamFilter == "" || model.IsValidId(teamFilter)) {
+		c.Err = model.NewAppError("getUsersForReporting", "api.getUsersForReporting.invalid_team_filter", nil, "", http.StatusBadRequest)
+		return
+	}
+
+	hideActive := r.URL.Query().Get("hide_active") == "true"
+	hideInactive := r.URL.Query().Get("hide_inactive") == "true"
+	if hideActive && hideInactive {
+		c.Err = model.NewAppError("getUsersForReporting", "api.getUsersForReporting.invalid_active_filter", nil, "", http.StatusBadRequest)
+		return
+	}
+
+	options := &model.UserReportOptions{
+		ReportingBaseOptions: model.ReportingBaseOptions{
+			SortColumn:          sortColumn,
+			SortDesc:            r.URL.Query().Get("sort_direction") == "desc",
+			PageSize:            pageSize,
+			LastSortColumnValue: r.URL.Query().Get("last_column_value"),
+			DateRange:           r.URL.Query().Get("date_range"),
+		},
+		Team:         teamFilter,
+		LastUserId:   r.URL.Query().Get("last_id"),
+		Role:         r.URL.Query().Get("role_filter"),
+		HasNoTeam:    r.URL.Query().Get("has_no_team") == "true",
+		HideActive:   hideActive,
+		HideInactive: hideInactive,
+	}
+	options.PopulateDateRange(time.Now())
+
+	// Don't allow fetching more than 100 users at a time from the normal query endpoint
+	if options.PageSize <= 0 || options.PageSize > model.ReportingMaxPageSize {
+		c.Err = model.NewAppError("getUsersForReporting", "api.getUsersForReporting.invalid_page_size", nil, "", http.StatusBadRequest)
+		return
+	}
+
+	userReports, err := c.App.GetUsersForReporting(options)
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	if jsonErr := json.NewEncoder(w).Encode(userReports); jsonErr != nil {
+		c.Logger.Warn("Error writing response", mlog.Err(jsonErr))
+	}
+}