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