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/public/model/report.go

@@ -0,0 +1,109 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"net/http"
+	"time"
+
+	pUtils "github.com/mattermost/mattermost/server/public/utils"
+)
+
+const (
+	ReportDurationLast30Days    = "last_30_days"
+	ReportDurationPreviousMonth = "previous_month"
+	ReportDurationLast6Months   = "last_6_months"
+
+	ReportingMaxPageSize = 100
+)
+
+var (
+	UserReportSortColumns = []string{"CreateAt", "Username", "FirstName", "LastName", "Nickname", "Email", "Roles"}
+)
+
+type ReportingBaseOptions struct {
+	SortDesc            bool
+	PageSize            int
+	SortColumn          string
+	LastSortColumnValue string
+	DateRange           string
+	StartAt             int64
+	EndAt               int64
+}
+
+func (options *ReportingBaseOptions) PopulateDateRange(now time.Time) {
+	startAt := int64(0)
+	endAt := int64(0)
+
+	if options.DateRange == ReportDurationLast30Days {
+		startAt = now.AddDate(0, 0, -30).UnixMilli()
+	} else if options.DateRange == ReportDurationPreviousMonth {
+		startOfMonth := time.Date(now.Year(), now.Month(), 1, 0, 0, 0, 0, time.Local)
+		startAt = startOfMonth.AddDate(0, -1, 0).UnixMilli()
+		endAt = startOfMonth.UnixMilli()
+	} else if options.DateRange == ReportDurationLast6Months {
+		startAt = now.AddDate(0, -6, -0).UnixMilli()
+	}
+
+	options.StartAt = startAt
+	options.EndAt = endAt
+}
+
+func (options *ReportingBaseOptions) IsValid() *AppError {
+	if options.EndAt > 0 && options.StartAt > options.EndAt {
+		return NewAppError("ReportingBaseOptions.IsValid", "model.reporting_base_options.is_valid.bad_date_range", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+type UserReportQuery struct {
+	User
+	UserPostStats
+}
+
+type UserReport struct {
+	Id          string `json:"id"`
+	Username    string `json:"username"`
+	Email       string `json:"email"`
+	CreateAt    int64  `json:"create_at,omitempty"`
+	DisplayName string `json:"display_name"`
+	Roles       string `json:"roles"`
+	UserPostStats
+}
+
+type UserReportOptions struct {
+	ReportingBaseOptions
+	LastUserId   string
+	Role         string
+	Team         string
+	HasNoTeam    bool
+	HideActive   bool
+	HideInactive bool
+}
+
+func (u *UserReportOptions) IsValid() *AppError {
+	if appErr := u.ReportingBaseOptions.IsValid(); appErr != nil {
+		return appErr
+	}
+
+	// Validate against the columns we allow sorting for
+	if !pUtils.Contains(UserReportSortColumns, u.SortColumn) {
+		return NewAppError("UserReportOptions.IsValid", "model.user_report_options.is_valid.invalid_sort_column", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (u *UserReportQuery) ToReport() *UserReport {
+	return &UserReport{
+		Id:            u.Id,
+		Username:      u.Username,
+		Email:         u.Email,
+		CreateAt:      u.CreateAt,
+		DisplayName:   u.GetDisplayName(ShowNicknameFullName),
+		Roles:         u.Roles,
+		UserPostStats: u.UserPostStats,
+	}
+}