package util

import (
	"strings"

	"github.com/ayntgl/discordgo"
	"github.com/rivo/tview"
)

// GetNodeByReference walks the root `*TreeNode` of the given `*TreeView` *treeView* and returns the TreeNode whose reference is equal to the given reference *r*. If the `*TreeNode` is not found, `nil` is returned instead.
func GetNodeByReference(treeView *tview.TreeView, r interface{}) (mn *tview.TreeNode) {
	treeView.GetRoot().Walk(func(n, _ *tview.TreeNode) bool {
		if n.GetReference() == r {
			mn = n
			return false
		}

		return true
	})

	return
}

// ChannelToString constructs a string representation of the given channel. The string representation may vary for different channel types.
func ChannelToString(c *discordgo.Channel) string {
	var repr string
	if c.Name != "" {
		repr = "#" + c.Name
	} else if len(c.Recipients) == 1 {
		rp := c.Recipients[0]
		repr = rp.Username + "#" + rp.Discriminator
	} else {
		rps := make([]string, len(c.Recipients))
		for i, r := range c.Recipients {
			rps[i] = r.Username + "#" + r.Discriminator
		}

		repr = strings.Join(rps, ", ")
	}

	return repr
}