package models

import "strings"

type Node struct {
	ID        string              `json:"id"`
	Title     string              `json:"title"`
	Content   string              `json:"content,omitempty"`
	DueDate   string              `json:"due_date,omitempty"`
	CreatedAt string              `json:"created_at"`
	UpdatedAt string              `json:"updated_at"`
	Tags      []string            `json:"tags,omitempty"`
	Relations map[string][]string `json:"relations,omitempty"`
}

type RelType string

const (
	RelBlocks   RelType = "blocks"
	RelSubtask  RelType = "subtask"
	RelRelated  RelType = "related"
	RelCreated  RelType = "created"
	RelAssignee RelType = "assignee"
)

func ParseTag(s string) (key, value string, isProperty bool) {
	if strings.HasPrefix(s, "_") {
		if parts := strings.SplitN(s[1:], "::", 2); len(parts) == 2 {
			return parts[0], parts[1], true
		}
	}
	return "", s, false
}

func PropertyTag(key, value string) string {
	return "_" + key + "::" + value
}

func (n *Node) GetProperty(key string) string {
	for _, tag := range n.Tags {
		if k, v, ok := ParseTag(tag); ok && k == key {
			return v
		}
	}
	return ""
}

func (n *Node) GetType() string {
	if t := n.GetProperty("type"); t != "" {
		return t
	}
	return "issue"
}

func (n *Node) HasTag(tag string) bool {
	for _, t := range n.Tags {
		if t == tag {
			return true
		}
	}
	return false
}