package main

import (
	"os"

	"github.com/gdamore/tcell/v2"
	"github.com/navidys/tvxwidgets"
	"github.com/rivo/tview"
)

type UIState struct {
	Page    string
	Error   string
	Success string
}

func AppUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
	list := tview.NewList()
	list.AddItem("CPkg Tools", "Create and unpack cpkg files for distribution", 'c', func() {
		newFrame := PackageUI(app, currentFrame, state, device)
		*currentFrame = newFrame
		state.Page = "package"
		app.SetRoot(newFrame, true)
	})
	list.AddItem("Upload to Cardputer", "Creates a package and uploads it to the connected Cardputer", 'u', func() {
		if !device.Connected {
			SetError(state, "No cardputer connected")
			return
		} else {
			SetError(state, "")
		}
		newFrame := UploadToolsUI(app, currentFrame, state, device)
		*currentFrame = newFrame
		state.Page = "upload-tools"
		app.SetRoot(newFrame, true)
	})
	list.AddItem("Live Refresh", "Monitors for changes and automatically uploads to the Cardputer (WIP)", 'l', nil)
	frame := tview.NewFrame(list)
	frame.SetBorders(0, 0, 0, 0, 0, 0)
	frame.AddText("Parchment - v0.0.1", true, tview.AlignLeft, tcell.ColorWhite)
	frame.AddText("Waiting for cardputer...", false, tview.AlignLeft, tcell.ColorWhite)

	return frame
}

func SetError(state *UIState, text string) {
	state.Success = ""
	state.Error = text
}

func SetSuccess(state *UIState, text string) {
	state.Error = ""
	state.Success = text
}

func UploadToolsUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
	list := tview.NewList()
	list.AddItem("Upload Package", "Uploads a chosen .cpkg file to the connected Cardputer", 'u', nil)
	list.AddItem("Sync Project", "Automatically packages and uploads the current project", 's', nil)
	list.AddItem("Back", "Go back to the home page", 'b', func() {
		newFrame := AppUI(app, currentFrame, state, device)
		*currentFrame = newFrame
		state.Page = "home"
		app.SetRoot(newFrame, true)
	})
	frame := tview.NewFrame(list)
	frame.SetBorders(0, 0, 0, 0, 0, 0)
	frame.AddText("Upload Tools", true, tview.AlignLeft, tcell.ColorWhite)
	return frame
}

func UploadUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
	list := tview.NewFlex()
	list.SetDirection(tview.FlexRow)
	progress := tvxwidgets.NewPercentageModeGauge()
	progress.SetValue(0)
	progress.SetMaxValue(100)
	progress.SetBorder(true)
	progress.SetTitle("Upload Progress")
	list.AddItem(progress, 0, 1, false)
	go func() {
		// check if a package.json file exists and load it
		fsys := os.DirFS(".")
		pkgData, err := loadPackageJSON(fsys)
		if err != nil { // if the package.json file does not exist, show an error modal
			modal := tview.NewModal()
			modal.SetText("Failed to load package.json")
			modal.AddButtons([]string{"OK"})
			modal.SetDoneFunc(func(buttonIndex int, buttonLabel string) {
				newFrame := AppUI(app, currentFrame, state, device)
				*currentFrame = newFrame
				state.Page = "home"
				app.SetRoot(newFrame, true)
			})
			app.SetRoot(modal, true)
			return
		}
		if pkgData == nil { // if the package.json file is empty, show an error modal
			modal := tview.NewModal()
			modal.SetText("Failed to load package.json")
			modal.AddButtons([]string{"OK"})
			modal.SetDoneFunc(func(buttonIndex int, buttonLabel string) {
				newFrame := AppUI(app, currentFrame, state, device)
				*currentFrame = newFrame
				state.Page = "home"
				app.SetRoot(newFrame, true)
			})
			app.SetRoot(modal, true)
			return
		}
	}()
	return tview.NewFrame(list)
}

func PackageUI(app *tview.Application, currentFrame **tview.Frame, state *UIState, device *Device) *tview.Frame {
	list := tview.NewList()
	list.AddItem("Create Package", "Creates a .cpkg file in the running directory", 'c', func() {
		fsys := os.DirFS(".")
		pkgData, err := loadPackageJSON(fsys)
		if err != nil {
			SetError(state, "Failed to load package.json")
			return
		}
		if pkgData == nil {
			SetError(state, "Failed to load package.json")
			return
		}
		pkg, err := createCpkg(fsys, pkgData)
		if err != nil {
			SetError(state, err.Error())
		} else {
			SetSuccess(state, "Created file "+pkg.packageName+".cpkg")
		}
	})
	list.AddItem("Unpack Package", "Unpacks a chosen .cpkg file into a subdirectory", 'u', nil)
	list.AddItem("Back", "Go back to the home page", 'b', func() {
		newFrame := AppUI(app, currentFrame, state, device)
		*currentFrame = newFrame
		state.Page = "home"
		app.SetRoot(newFrame, true)
	})
	frame := tview.NewFrame(list)
	frame.SetBorders(0, 0, 0, 0, 0, 0)
	frame.AddText("Package Tools", true, tview.AlignLeft, tcell.ColorWhite)
	frame.AddText("Waiting for cardputer...", false, tview.AlignLeft, tcell.ColorWhite)
	return frame
}

func UpdateDeviceStatus(app *tview.Application, frame *tview.Frame, state *UIState, status string, color tcell.Color) {
	app.QueueUpdateDraw(func() {
		frame.Clear()
		switch state.Page {
		case "home":
			frame.AddText("Parchment - v0.0.1", true, tview.AlignLeft, tcell.ColorWhite)
		case "package":
			frame.AddText("Package Tools", true, tview.AlignLeft, tcell.ColorWhite)
		case "upload":
			frame.AddText("Uploading to Cardputer - Do not disconnect the cardputer until the upload is complete", true, tview.AlignLeft, tcell.ColorWhite)
		case "upload-tools":
			frame.AddText("Upload Tools", true, tview.AlignLeft, tcell.ColorWhite)
		}
		if state.Error != "" {
			frame.AddText(state.Error, false, tview.AlignRight, tcell.ColorRed)
		}
		if state.Success != "" {
			frame.AddText(state.Success, false, tview.AlignRight, tcell.ColorGreen)
		}
		frame.AddText(status, false, tview.AlignLeft, color)
	})
}