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dwelling-home/pkg/mindflow/mindflow.go

59 lines
1.2 KiB
Go

package mindflow
import (
"errors"
"fmt"
"strings"
"time"
)
type Category struct {
ID int64
Name string
}
func NewCategory(name string) (*Category, error) {
if name == "" {
return nil, errors.New("category's name should not be empty")
}
return &Category{Name: name}, nil
}
type Post struct {
ID int64
Category Category
Date time.Time
Title string
Body string
}
func NewPost(category Category, title, body string) (*Post, error) {
if title == "" || body == "" {
return nil, errors.New("empty title or body is not allowed")
}
return &Post{
Category: category,
Date: time.Now().UTC(),
Title: title,
Body: body}, nil
}
func (p *Post) PostID() string {
name := strings.ToLower(p.Category.Name)
name = strings.ReplaceAll(name, " ", ".")
return fmt.Sprint(name, "-", p.Date.UTC().Format("20060102-150405"))
}
type Mindflow interface {
NewPost(post *Post) error
EditPost(post *Post) error
DeletePost(id int64) error
Posts() ([]Post, error)
NewCategory(category *Category) (int64, error)
EditCategory(category *Category) error
DeleteCategory(id int64) error
DeleteUnusedCategories() error
Categories() ([]Category, error)
Close() error
}