package note

import (
	"crypto/sha256"
	"fmt"
	"strings"
	"time"
)

type Note struct {
	ID      string
	Path    string
	Title   string
	Content string
	// HTMLContent string
	ModTime time.Time
	// Directly in Note
	Tags      []string
	CreatedAt time.Time
	UpdatedAt time.Time
	Published bool
}

func NewNote() *Note {
	return &Note{}
}

// ExtractTitle return the first level heading content ('# title')
func ExtractTitle(mkd string) string {
	if mkd == "" {
		return ""
	}

	if !strings.HasPrefix(mkd, "# ") {
		return ""
	}

	var title string
	for _, c := range strings.TrimLeft(mkd, "# ") {
		if strings.Contains("*~", string(c)) {
			continue
		}
		if string(c) == "\n" {
			break
		}
		title = title + string(c)
	}
	return title
}

func GenerateNoteID(path string) string {
	return fmt.Sprintf("%x", sha256.Sum256([]byte(path)))[:10]
}