package routes

import (
	"dk/internal/actions"
	"dk/internal/components"
	"dk/internal/models/towns"
	"dk/internal/models/users"
	"fmt"

	sushi "git.sharkk.net/Sharkk/Sushi"
	"git.sharkk.net/Sharkk/Sushi/auth"
)

// Map acts as a representation of owned/unowned maps in the town stores.
type Map struct {
	ID    int
	Name  string
	Cost  int
	Owned bool
	X     int
	Y     int
	TP    int
}

func RegisterTownRoutes(app *sushi.App) {
	group := app.Group("/town")
	group.Use(auth.RequireAuth("/login"))
	group.Use(requireTown())

	group.Get("/", showTown)
	group.Get("/inn", showInn)
	group.Post("/inn", rest)
	group.Get("/shop", showShop)
	group.Get("/shop/buy/:id", buyItem)
	group.Get("/maps", showMaps)
	group.Get("/maps/buy/:id", buyMap)
}

// requireTown middleware ensures the user is in a town
func requireTown() sushi.Middleware {
	return func(ctx sushi.Ctx, next func()) {
		user := ctx.GetCurrentUser()
		if user == nil {
			ctx.SendError(401, "Not authenticated")
			return
		}

		userModel := user.(*users.User)
		if userModel.Currently != "In Town" {
			ctx.SendError(403, "You must be in town")
			return
		}

		town, err := towns.ByCoords(userModel.X, userModel.Y)
		if err != nil || town == nil || town.ID == 0 {
			ctx.SendError(403, fmt.Sprintf("Invalid town location (%d, %d)", userModel.X, userModel.Y))
			return
		}

		ctx.SetUserValue("town", town)
		next()
	}
}

func showTown(ctx sushi.Ctx) {
	town := ctx.UserValue("town").(*towns.Town)
	components.RenderPage(ctx, town.Name, "town/town.html", map[string]any{
		"town":        town,
		"newscontent": components.GenerateTownNews(),
		"whosonline":  components.GenerateTownWhosOnline(),
	})
}

func showInn(ctx sushi.Ctx) {
	town := ctx.UserValue("town").(*towns.Town)
	sess := ctx.GetCurrentSession()

	value, exists := sess.GetFlash("rested")
	rested := false
	if exists && value == true {
		rested = true
	}

	components.RenderPage(ctx, town.Name+" Inn", "town/inn.html", map[string]any{
		"town":   town,
		"rested": rested,
	})
}

func rest(ctx sushi.Ctx) {
	sess := ctx.GetCurrentSession()
	town := ctx.UserValue("town").(*towns.Town)
	user := ctx.GetCurrentUser().(*users.User)

	err := actions.RestAtInn(user, town)
	if err != nil {
		sess.SetFlash("error", err.Error())
		ctx.Redirect("/town/inn")
		return
	}

	sess.SetFlash("rested", true)
	ctx.Redirect("/town/inn")
}

func showShop(ctx sushi.Ctx) {
	sess := ctx.GetCurrentSession()
	var errorHTML string

	errorMsg := sess.GetFlashMessage("error")
	if errorMsg != "" {
		errorHTML = `<div style="color: red; margin-bottom: 1rem;">` + errorMsg + "</div>"
	}

	town := ctx.UserValue("town").(*towns.Town)

	itemList, err := town.GetShopItems()
	if err != nil {
		fmt.Printf("Town shop list error: %s\n", err.Error())
	}

	components.RenderPage(ctx, town.Name+" Shop", "town/shop.html", map[string]any{
		"town":          town,
		"itemlist":      itemList,
		"error_message": errorHTML,
	})
}

func buyItem(ctx sushi.Ctx) {
	sess := ctx.GetCurrentSession()
	id := ctx.Param("id").Int()
	town := ctx.UserValue("town").(*towns.Town)
	user := ctx.GetCurrentUser().(*users.User)

	err := actions.BuyShopItem(user, town, id)
	if err != nil {
		sess.SetFlash("error", err.Error())
		ctx.Redirect("/town/shop")
		return
	}

	ctx.Redirect("/town/shop")
}

func showMaps(ctx sushi.Ctx) {
	user := ctx.UserValue("user").(*users.User)
	town := ctx.UserValue("town").(*towns.Town)
	towns, _ := towns.All()

	var mapList []*Map
	for _, town := range towns {
		mapList = append(mapList, &Map{
			ID:    town.ID,
			Name:  town.Name,
			Cost:  town.MapCost,
			Owned: user.HasTownMap(town.ID),
			X:     town.X, Y: town.Y,
			TP: town.TPCost,
		})
	}

	components.RenderPage(ctx, town.Name+" Maps", "town/maps.html", map[string]any{
		"town":    town,
		"maplist": mapList,
	})
}

func buyMap(ctx sushi.Ctx) {
	sess := ctx.GetCurrentSession()
	id := ctx.Param("id").Int()
	user := ctx.GetCurrentUser().(*users.User)

	err := actions.BuyTownMap(user, id)
	if err != nil {
		sess.SetFlash("error", err.Error())
		ctx.Redirect("/town/maps")
		return
	}

	ctx.Redirect("/town/maps")
}