package app

import (
	"fmt"
	"strconv"

	"git.sr.ht/~rockorager/vaxis"
	"git.sr.ht/~rockorager/vaxis/widgets/textinput"
	"git.tilde.town/nbsp/neofeels/config"
	"git.tilde.town/nbsp/neofeels/ui"
)

type Config struct {
	title        string
	list         ui.List
	help         string
	config       *config.Config
	descriptions []string
}

var configList = []string{
	"publish to html",
	"publish to gopher",
	"default to nopub",
}

func NewConfig() *Config {
	cfg, err := config.Read()
	if err != nil {
		cfg = config.Default
	}
	return &Config{
		title,
		ui.NewList(configList),
		"↑↓/kj move  ↵ enter  q return",
		cfg,
		[]string{
			`do you want to publish your feels online?

if yes, your feels will be published to a directory of your choice in your
public_html. if not, your feels will only be readable from within the tilde.town
network. if you already have a publishing directory, i'll remove it for you
(don't worry, your written entries will still be saved!)`,
			`gopher is a pre-web technology that is text-oriented and primarily used to
share folders of your files with the world.

would you like to publish your feels to gopher?

entries you write will automatically get linked to ~/public_gopher/feels/,
including gophermap generation. files you manually delete will no longer be
visible from your gopherhole, and will be purged from your gophermap on your
next entry update.`,
			`should your posts automatically show up on your world-visible pages, such as
html and gopher? you can change this behaviour on a per-post basis after the
fact. changes to this setting will not be made retroactively.`,
			`in which directory under public_html should your blog reside? for example,
"blog" will make it visible under https://tilde.town/~you/blog.`,
		},
	}
}

func (config *Config) 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":
			config.list.Down()
		case "Up", "k":
			config.list.Up()
		case "End", "Shift+g":
			config.list.End()
		case "Home", "g":
			config.list.Home()
		case "0", "1":
			i, _ := strconv.Atoi(key.String())
			config.list.SetIndex(i)
		case "2", "3":
			if config.config.Publishing {

				i, _ := strconv.Atoi(key.String())
				config.list.SetIndex(i)
			}
		case "q", "h", "Left":
			ui.ViewChange <- NewMainMenu()
		case "Enter", "l", "Right", "Space":
			switch config.list.Index() {
			case 0:
				config.config.Publishing = !config.config.Publishing
			case 1:
				config.config.Gopher = !config.config.Gopher
			case 2:
				config.config.Nopub = !config.config.Nopub
			case 3:
				config.config.PublishDir = config.changePublishDir(state)
			}
			config.config.Write()
		}
		processed = true
	}
	config.Draw(state)
	return
}

func (config *Config) Draw(state *ui.State) {
	if config.config.Publishing {
		config.list.SetItems(append(configList, "html publish directory"))
	} else {
		config.list.SetItems(configList)
	}
	win := state.Window()
	win.New(win.Width/2-10, win.Height/2-8, 20, 5).Print(vaxis.Segment{Text: config.title})
	config.list.Draw(vaxis.Window{
		Vx:     win.Vx,
		Parent: nil,
		Column: win.Width/2 - 21,
		Row:    win.Height/2 - 2,
		Width:  28,
		Height: 4,
	})
	win.New(win.Width/2-40, win.Height/2+3, 80, 10).Print(vaxis.Segment{Text: config.descriptions[config.list.Index()]})
	win.New(win.Width/2-15, win.Height/2+13, 30, 1).Print(vaxis.Segment{Text: config.help})

	// drawing the current selected options
	win.New(win.Width/2+7, win.Height/2-2, 14, 1).Print(vaxis.Segment{Text: fmt.Sprintf("  %-12v", config.config.Publishing)})
	win.New(win.Width/2+7, win.Height/2-1, 14, 1).Print(vaxis.Segment{Text: fmt.Sprintf("  %-12v", config.config.Gopher)})
	win.New(win.Width/2+7, win.Height/2, 14, 1).Print(vaxis.Segment{Text: fmt.Sprintf("  %-12v", config.config.Nopub)})
	if config.config.Publishing {
		win.New(win.Width/2+7, win.Height/2+1, 14, 1).Print(vaxis.Segment{Text: fmt.Sprintf("  %-12v", config.config.PublishDir)})
	}
}

func (config *Config) changePublishDir(state *ui.State) string {
	ti := textinput.New()
	ti.SetContent(config.config.PublishDir)
	config.Draw(state)
	win := state.Window()
	ti.Draw(vaxis.Window{
		Vx:     win.Vx,
		Parent: &win,
		Column: win.Width/2 + 9,
		Row:    win.Height/2 + 1,
		Width:  12,
		Height: 1,
	})
	for ev := range win.Vx.Events() {
		switch ev := ev.(type) {
		case vaxis.Key:
			switch ev.String() {
			case "Ctrl+c", "Esc", "Enter":
				state.HideCursor()
				return ti.String()
			}
		}
		ti.Update(ev)
		config.Draw(state)
		ti.Draw(vaxis.Window{
			Vx:     win.Vx,
			Parent: nil,
			Column: win.Width/2 + 9,
			Row:    win.Height/2 + 1,
			Width:  12,
			Height: 1,
		})
		state.Render()
	}

	return ""
}