package header

import (
	"fmt"

	"github.com/mrusme/gobbs/config"
	"github.com/mrusme/gobbs/ui/ctx"

	"github.com/charmbracelet/bubbles/spinner"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
)

var (
	highlight = lipgloss.AdaptiveColor{Light: "#874BFD", Dark: "#7D56F4"}
	banner    = "▄▗▖▎▄▗▅▖▗▅▅▖▗▅▅▖▅▅▅▖▏▉▅▅┓▅▖▎▗▅▌\n" +
		"▗▎▍▄▗▗▎▏▍▝▝▘▍▝▂▉┈▂▎▍▅▋▊▂╴▏▊▗╴▋▎\n" +
		"▊▉▌╴▘▁▏▏▅▆┈▏▉▇▆▌▗▖▍▎▃▎▎▅▋▋▎▗▎▍▘\n" +
		"▝▄▄▄▘▇▄▆▄▄▄▝▄▄▘▝▘▝▘▏╴▄▘▄▝▘▇╴▄▘▄\n" +
		"   v" + config.VERSION
)

type Model struct {
	ctx     *ctx.Ctx
	spinner spinner.Model
}

func NewModel(c *ctx.Ctx) Model {
	m := Model{
		ctx: c,
	}

	m.spinner = spinner.New()
	m.spinner.Spinner = spinner.Dot
	m.spinner.Style = lipgloss.NewStyle().Foreground(lipgloss.Color("205"))

	return m
}

func (m Model) Init() tea.Cmd {
	return m.spinner.Tick
}

func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
	var cmds []tea.Cmd

	if m.ctx.Loading == true {
		cmds = append(cmds, m.spinner.Tick)
	} else {
		return m, nil
	}

	switch msg := msg.(type) {
	case spinner.TickMsg:
		var cmd tea.Cmd
		m.spinner, cmd = m.spinner.Update(msg)
		cmds = append(cmds, cmd)
	}

	return m, tea.Batch(cmds...)
}

func (m Model) View() string {
	var row string
	var spinner string = ""

	selectorWidth := 40
	selectorTextLen := selectorWidth - 7
	selector := lipgloss.NewStyle().
		Foreground(lipgloss.Color("#7fffd4")).
		BorderForeground(lipgloss.Color("#7fffd4")).
		Border(lipgloss.NormalBorder()).
		Padding(0, 1, 0, 1).
		Width(selectorWidth)

	curSysIdx := m.ctx.GetCurrentSystem()
	var currentSystem string = "All"
	if curSysIdx >= 0 {
		currentSystem = (*m.ctx.Systems[curSysIdx]).Title()
		if len(currentSystem) > selectorTextLen {
			currentSystem = currentSystem[0:selectorTextLen]
		}
	}

	curForum := m.ctx.GetCurrentForum()
	var currentForum string = "All"
	if curForum.ID != "" {
		currentForum = curForum.Title()
		if len(currentForum) > selectorTextLen {
			currentForum = currentForum[0:selectorTextLen]
		}
	}

	systemSelector := selector.Render(fmt.Sprintf("⏷  %s", currentSystem))
	forumSelector := selector.Render(fmt.Sprintf("⏷  %s", currentForum))

	selectorColumn := lipgloss.JoinVertical(lipgloss.Center,
		lipgloss.JoinHorizontal(lipgloss.Bottom, "System: \n   "+
			lipgloss.NewStyle().Foreground(m.ctx.Theme.DialogBox.Bottombar.GetForeground()).Render("C-e"),
			systemSelector),
		lipgloss.JoinHorizontal(lipgloss.Bottom, "Forum: \n  "+
			lipgloss.NewStyle().Foreground(m.ctx.Theme.DialogBox.Bottombar.GetForeground()).Render("C-t"),
			forumSelector),
	)

	if m.ctx.Loading == true {
		spinner = m.spinner.View()
	}

	row = lipgloss.JoinHorizontal(lipgloss.Top, banner, "   ", selectorColumn, " ", spinner)

	return row
}