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package todolist
import "regexp"
type TodoFilter struct {
Todos []*Todo
}
func NewFilter(todos []*Todo) *TodoFilter {
return &TodoFilter{Todos: todos}
}
func (f *TodoFilter) Filter(input string) []*Todo {
f.Todos = f.filterArchived(input)
f.Todos = f.filterPrioritized(input)
f.Todos = f.filterProjects(input)
f.Todos = f.filterContexts(input)
f.Todos = NewDateFilter(f.Todos).FilterDate(input)
return f.Todos
}
func (t *TodoFilter) isFilteringByProjects(input string) bool {
parser := &Parser{}
return len(parser.Projects(input)) > 0
}
func (t *TodoFilter) isFilteringByContexts(input string) bool {
parser := &Parser{}
return len(parser.Contexts(input)) > 0
}
func (f *TodoFilter) filterArchived(input string) []*Todo {
// do not filter archived if want completed items
completedRegex, _ := regexp.Compile(`completed`)
if completedRegex.MatchString(input) {
return f.Todos
}
r, _ := regexp.Compile(`l archived$`)
if r.MatchString(input) {
return f.getArchived()
} else {
return f.getUnarchived()
}
}
func (f *TodoFilter) filterPrioritized(input string) []*Todo {
r, _ := regexp.Compile(`l p`)
if r.MatchString(input) {
return f.getPrioritized()
} else {
return f.Todos
}
}
func (f *TodoFilter) filterProjects(input string) []*Todo {
if !f.isFilteringByProjects(input) {
return f.Todos
}
parser := &Parser{}
projects := parser.Projects(input)
var ret []*Todo
for _, todo := range f.Todos {
for _, todoProject := range todo.Projects {
for _, project := range projects {
if project == todoProject {
ret = AddTodoIfNotThere(ret, todo)
}
}
}
}
return ret
}
func (f *TodoFilter) filterContexts(input string) []*Todo {
if !f.isFilteringByContexts(input) {
return f.Todos
}
parser := &Parser{}
contexts := parser.Contexts(input)
var ret []*Todo
for _, todo := range f.Todos {
for _, todoContext := range todo.Contexts {
for _, context := range contexts {
if context == todoContext {
ret = AddTodoIfNotThere(ret, todo)
}
}
}
}
return ret
}
func (f *TodoFilter) getArchived() []*Todo {
var ret []*Todo
for _, todo := range f.Todos {
if todo.Archived {
ret = append(ret, todo)
}
}
return ret
}
func (f *TodoFilter) getPrioritized() []*Todo {
var ret []*Todo
for _, todo := range f.Todos {
if todo.IsPriority {
ret = append(ret, todo)
}
}
return ret
}
func (f *TodoFilter) getUnarchived() []*Todo {
var ret []*Todo
for _, todo := range f.Todos {
if !todo.Archived {
ret = append(ret, todo)
}
}
return ret
}
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