vikunja-api/pkg/models/list_tasks.go
2018-12-29 14:29:50 +00:00

253 lines
6.8 KiB
Go

// Vikunja is a todo-list application to facilitate your life.
// Copyright 2018 Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package models
import (
"code.vikunja.io/web"
"sort"
)
// ListTask represents an task in a todolist
type ListTask struct {
ID int64 `xorm:"int(11) autoincr not null unique pk" json:"id" param:"listtask"`
Text string `xorm:"varchar(250)" json:"text" valid:"runelength(3|250)"`
Description string `xorm:"varchar(250)" json:"description" valid:"runelength(0|250)"`
Done bool `xorm:"INDEX" json:"done"`
DueDateUnix int64 `xorm:"int(11) INDEX" json:"dueDate"`
RemindersUnix []int64 `xorm:"JSON TEXT" json:"reminderDates"`
CreatedByID int64 `xorm:"int(11)" json:"-"` // ID of the user who put that task on the list
ListID int64 `xorm:"int(11) INDEX" json:"listID" param:"list"`
RepeatAfter int64 `xorm:"int(11) INDEX" json:"repeatAfter"`
ParentTaskID int64 `xorm:"int(11) INDEX" json:"parentTaskID"`
Priority int64 `xorm:"int(11)" json:"priority"`
StartDateUnix int64 `xorm:"int(11) INDEX" json:"startDate"`
EndDateUnix int64 `xorm:"int(11) INDEX" json:"endDate"`
Assignees []*User `xorm:"-" json:"assignees"`
Sorting string `xorm:"-" json:"-" param:"sort"` // Parameter to sort by
StartDateSortUnix int64 `xorm:"-" json:"-" param:"startdatefilter"`
EndDateSortUnix int64 `xorm:"-" json:"-" param:"enddatefilter"`
Subtasks []*ListTask `xorm:"-" json:"subtasks"`
Created int64 `xorm:"created" json:"created"`
Updated int64 `xorm:"updated" json:"updated"`
CreatedBy User `xorm:"-" json:"createdBy" valid:"-"`
web.CRUDable `xorm:"-" json:"-"`
web.Rights `xorm:"-" json:"-"`
}
// TableName returns the table name for listtasks
func (ListTask) TableName() string {
return "tasks"
}
// ListTaskAssginee represents an assignment of a user to a task
type ListTaskAssginee struct {
ID int64 `xorm:"int(11) autoincr not null unique pk"`
TaskID int64 `xorm:"int(11) not null"`
UserID int64 `xorm:"int(11) not null"`
Created int64 `xorm:"created"`
}
// TableName makes a pretty table name
func (ListTaskAssginee) TableName() string {
return "task_assignees"
}
// ListTaskAssigneeWithUser is a helper type to deal with user joins
type ListTaskAssigneeWithUser struct {
TaskID int64
User `xorm:"extends"`
}
// GetTasksByListID gets all todotasks for a list
func GetTasksByListID(listID int64) (tasks []*ListTask, err error) {
err = x.Where("list_id = ?", listID).Find(&tasks)
if err != nil {
return
}
// No need to iterate over users if the list doesn't has tasks
if len(tasks) == 0 {
return
}
// make a map so we can put in subtasks more easily
taskMap := make(map[int64]*ListTask, len(tasks))
// Get all users & task ids and put them into the array
var userIDs []int64
var taskIDs []int64
for _, i := range tasks {
taskIDs = append(taskIDs, i.ID)
found := false
for _, u := range userIDs {
if i.CreatedByID == u {
found = true
break
}
}
if !found {
userIDs = append(userIDs, i.CreatedByID)
}
taskMap[i.ID] = i
}
// Get all assignees
taskAssignees, err := getRawTaskAssigneesForTasks(taskIDs)
if err != nil {
return
}
// Put the assignees in the task map
for _, a := range taskAssignees {
if a != nil {
taskMap[a.TaskID].Assignees = append(taskMap[a.TaskID].Assignees, &a.User)
}
}
var users []User
err = x.In("id", userIDs).Find(&users)
if err != nil {
return
}
// Add all user objects to the appropriate tasks
for _, task := range taskMap {
// Make created by user objects
for _, u := range users {
if task.CreatedByID == u.ID {
taskMap[task.ID].CreatedBy = u
break
}
}
// Reorder all subtasks
if task.ParentTaskID != 0 {
taskMap[task.ParentTaskID].Subtasks = append(taskMap[task.ParentTaskID].Subtasks, task)
delete(taskMap, task.ID)
}
}
// make a complete slice from the map
tasks = []*ListTask{}
for _, t := range taskMap {
tasks = append(tasks, t)
}
// Sort the output. In Go, contents on a map are put on that map in no particular order.
// Because of this, tasks are not sorted anymore in the output, this leads to confiusion.
// To avoid all this, we need to sort the slice afterwards
sort.Slice(tasks, func(i, j int) bool {
return tasks[i].ID < tasks[j].ID
})
return
}
func getRawTaskAssigneesForTasks(taskIDs []int64) (taskAssignees []*ListTaskAssigneeWithUser, err error) {
taskAssignees = []*ListTaskAssigneeWithUser{nil}
err = x.Table("task_assignees").
Select("task_id, users.*").
In("task_id", taskIDs).
Join("INNER", "users", "task_assignees.user_id = users.id").
Find(&taskAssignees)
return
}
// GetListTaskByID returns all tasks a list has
func GetListTaskByID(listTaskID int64) (listTask ListTask, err error) {
if listTaskID < 1 {
return ListTask{}, ErrListTaskDoesNotExist{listTaskID}
}
exists, err := x.ID(listTaskID).Get(&listTask)
if err != nil {
return ListTask{}, err
}
if !exists {
return ListTask{}, ErrListTaskDoesNotExist{listTaskID}
}
u, err := GetUserByID(listTask.CreatedByID)
if err != nil {
return
}
listTask.CreatedBy = u
// Get assignees
taskAssignees, err := getRawTaskAssigneesForTasks([]int64{listTaskID})
if err != nil {
return
}
for _, u := range taskAssignees {
if u != nil {
listTask.Assignees = append(listTask.Assignees, &u.User)
}
}
return
}
// GetTasksByIDs returns all tasks for a list of ids
func (bt *BulkTask) GetTasksByIDs() (err error) {
for _, id := range bt.IDs {
if id < 1 {
return ErrListTaskDoesNotExist{id}
}
}
err = x.In("id", bt.IDs).Find(&bt.Tasks)
if err != nil {
return err
}
// We use a map, to avoid looping over two slices at once
var usermapids = make(map[int64]bool) // Bool ist just something, doesn't acutually matter
for _, list := range bt.Tasks {
usermapids[list.CreatedByID] = true
}
// Make a slice from the map
var userids []int64
for uid := range usermapids {
userids = append(userids, uid)
}
// Get all users for the tasks
var users []*User
err = x.In("id", userids).Find(&users)
if err != nil {
return err
}
for in, task := range bt.Tasks {
for _, u := range users {
if task.CreatedByID == u.ID {
bt.Tasks[in].CreatedBy = *u
}
}
}
return
}