package templates

import (
	"fmt"
	"strings"

	"github.com/go-git/go-git/v5/plumbing"
	"go.alanpearce.eu/elgit/git"
	g "go.alanpearce.eu/gomponents"
	. "go.alanpearce.eu/gomponents/html"
)

// LogPage renders the commit log page
func LogPage(data PageData, commits []*git.CommitReference) g.Node {
	return Page(data, []g.Node{
		RepoHeader(data),
		RenderNav(data),
		Main(
			Log(data, commits),
		),
	})
}

func Log(data PageData, commits []*git.CommitReference) g.Node {
	return Div(Class("log"),
		g.Map(commits, func(commit *git.CommitReference) g.Node {
			return g.Group{
				Div(Class("commit-header"),
					A(
						Href(fmt.Sprintf("/%s/commit/%s", data.Name, commit.Hash.String())),
						Class("commit-message"),
						g.Text(firstLine(commit.Message)),
					),
					g.Text(" "),
					g.If(
						commit.HasReference(),
						g.Map(commit.References(), func(ref *plumbing.Reference) g.Node {
							return A(
								Href(fmt.Sprintf("/%s/tree/%s", data.Name, ref.Name().Short())),
								Class("commit-reference"),
								g.Text(ref.Name().Short()),
							)
						}),
					),
				),
				Div(
					Class("commit-time"),
					CommitTime(commit.Author.When),
				),
				Div(
					Class("commit-author"),
					CommitAuthor(commit.Author),
				),
			}
		}),
	)
}

func firstLine(message string) string {
	before, _, _ := strings.Cut(message, "\n")

	return before
}