package flags

// WIP

import (
	"embed"
	"encoding/json"
	"errors"
	"fmt"

	"git.tijl.dev/tijl/tijl.dev-core/modules/i18n"
	log "git.tijl.dev/tijl/tijl.dev-core/modules/logger"
	"git.tijl.dev/tijl/tijl.dev-core/modules/web"
	"github.com/gofiber/fiber/v2"
)

var supportedTags []string
var countryCodes []CountryCode

type CountryCode struct {
	Code string   `json:"code"`
	Tags []string `json:"tags"`
}

func filterCountriesByTags(tags []string) (error, []string) {
	var result []string

	for _, tag := range tags {
		isSupported := false
		for _, supportedTag := range supportedTags {
			if tag == supportedTag {
				isSupported = true
			}
		}
		if isSupported == false {
			return errors.New(fmt.Sprintf("unsupported tag %v", tag)), result
		}
	}

	for _, country := range countryCodes {
		for _, tag := range tags {
			for _, cTag := range country.Tags {
				if cTag == tag {
					result = append(result, country.Code)
				}
			}
		}
	}

	return nil, result
}

//go:embed locales/* data/*
var Embed embed.FS

func Setup() {
	i18n.RegisterTranslations(Embed, "locales")

	err := loadData()
	if err != nil {
		log.Error().Err(err).Msg("error loading country codes data file")
	}

	web.RegisterAppSetupFunc(func(a *fiber.App) {
		a.Get("/app/flags", func(c *fiber.Ctx) error {

			if c.Cookies("app_flags_game_session") != "" {
				return questionHandler(c, NewGameUUID{})
			} else {
				return EntryPageHandler(c)
			}

		})

		a.Post("/app/flags", func(c *fiber.Ctx) error {

			recType := c.FormValue("type")

			switch recType {
			case "start":
				return startNewGameHandler(c)
			case "answer":
				return answerHandler(c)
			case "exit":
				return stopGameHandler(c)
			}

			return nil
		})
	}, 1000)
}

func loadData() error {
	countryCodesData, err := Embed.ReadFile("data/country_codes.json")
	if err != nil {
		return err
	}

	countryCodes = []CountryCode{}
	err = json.Unmarshal(countryCodesData, &countryCodes)
	if err != nil {
		return err
	}

	tagsData, err := Embed.ReadFile("data/tags.json")
	if err != nil {
		return err
	}

	supportedTags = []string{}
	err = json.Unmarshal(tagsData, &supportedTags)
	if err != nil {
		return err
	}

	return nil
}

func EntryPageHandler(c *fiber.Ctx) error {
	data := *web.Common(c)
	data["Title"] = "tmp"
	data["SupportedTags"] = supportedTags
	return c.Render("apps/flags/start", data, "layouts/base")
}