package cfg

// See https://mycorrhiza.wiki/hypha/configuration/header
import (
	"github.com/bouncepaw/mycomarkup/v2/blocks"
	"strings"
)

// HeaderLinks is a list off current header links. Feel free to iterate it directly but do not modify it by yourself. Call ParseHeaderLinks if you need to set new header links.
var HeaderLinks []HeaderLink

// SetDefaultHeaderLinks sets the header links to the default list of: home hypha, recent changes, hyphae list, random hypha.
func SetDefaultHeaderLinks() {
	HeaderLinks = []HeaderLink{
		{"/recent-changes", "Recent changes"},
		{"/list", "All hyphae"},
		{"/random", "Random"},
		{"/help", "Help"},
	}
}

// ParseHeaderLinks extracts all rocketlinks from the given text and saves them as header links.
func ParseHeaderLinks(text string) {
	HeaderLinks = []HeaderLink{}
	for _, line := range strings.Split(text, "\n") {
		// There is a false positive when parsing markup like that:
		//
		//     ```
		//     => this is not a link, it is part of the preformatted block
		//     ```
		//
		// I do not really care.
		if strings.HasPrefix(line, "=>") {
			rl := blocks.MakeRocketLink(line, HeaderLinksHypha)
			href, display := rl.Href(), rl.Display()
			HeaderLinks = append(HeaderLinks, HeaderLink{
				Href:    href,
				Display: display,
			})
		}
	}
}

// HeaderLink represents a header link. Header links are the links shown in the top gray bar.
type HeaderLink struct {
	// Href is the URL of the link. It goes <a href="here">...</a>.
	Href string
	// Display is what is shown when the link is rendered. It goes <a href="...">here</a>.
	Display string
}