package app

import (
	"fmt"
	"strconv"

	"git.sr.ht/~rockorager/vaxis"
	"git.tilde.town/nbsp/neofeels/ttbp"
	"git.tilde.town/nbsp/neofeels/ui"
)

type Browse struct {
	title string
	list  ui.List
	help  string
	posts []ttbp.Post
}

func NewBrowse() *Browse {
	users := ttbp.GetUsers()
	posts := []ttbp.Post{}
	for _, user := range users {
		posts = append(posts, ttbp.GetPostsForUser(user.Name)...)
	}
	posts = ttbp.SortPostsByRecent(posts)
	list := []string{}
	for _, post := range posts {
		list = append(list, fmt.Sprintf(
			"~%-15s %s (%d words)",
			post.Author,
			post.LastEdited.Format("2006-01-02 15:04"),
			post.Words,
		))
	}

	return &Browse{
		title,
		ui.NewList(list),
		"↑↓/kj move  ↵ enter  q return",
		posts,
	}
}

func (browse *Browse) Event(state *ui.State, event vaxis.Event) (processed bool) {
	if key, ok := event.(vaxis.Key); ok && key.EventType == vaxis.EventPress {
		switch key.String() {
		case "Ctrl+c", "Ctrl+d":
			close(ui.Quit)
		case "Down", "j":
			browse.list.Down()
		case "Up", "k":
			browse.list.Up()
		case "End", "Shift+g":
			browse.list.End()
		case "Home", "g":
			browse.list.Home()
		case "0", "1", "2", "3", "4", "5", "6", "7", "8", "9":
			i, _ := strconv.Atoi(key.String())
			browse.list.SetIndex(i)
		case "q", "h", "Left":
			ui.ViewChange <- NewMainMenu()
		case "Enter", "l", "Right":
			showPost(state, browse.posts[browse.list.Index()])
		}
		processed = true
	}
	browse.Draw(state)
	return
}

func (browse *Browse) Draw(state *ui.State) {
	win := state.Window()
	win.New(win.Width/2-10, win.Height/2-8, 20, 5).Print(vaxis.Segment{Text: browse.title})
	browse.list.Draw(vaxis.Window{
		Vx:     win.Vx,
		Parent: nil,
		Column: win.Width/2 - 25,
		Row:    win.Height/2 - 2,
		Width:  50,
		Height: 10,
	})
	win.New(win.Width/2-15, win.Height/2+9, 30, 1).Print(vaxis.Segment{Text: browse.help})
}