package routes

import (
	"fmt"

	"git.readonly.ch/bouzoure/gpx-downloader/helpers"
	"git.readonly.ch/bouzoure/gpx-downloader/providers"
	"git.readonly.ch/bouzoure/gpx-downloader/templates"
	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/log"
	"github.com/tkrajina/gpxgo/gpx"
)

func Fetch(c *fiber.Ctx) error {
	// In case of error
	baseParams := templates.BaseTemplateParams{
		Title: "Error - GPX downloader",
	}
	var indexParams templates.IndexParams

	sourceUrl := c.FormValue("url")
	if len(sourceUrl) <= 0 {
		indexParams.Error = "Error: URL is empty"
		return helpers.TemplRender(c, templates.Index(baseParams, indexParams))
	}

	var gpxFile gpx.GPX
	var err error
	var filename string

	// Check if link is Suisse Mobile
	suisseMobileId := providers.SuisseMobileCheckURL(sourceUrl)
	if suisseMobileId > 0 {
		filename = fmt.Sprintf(
			"suisse_mobile_%d",
			suisseMobileId,
		)

		gpxFile, err = providers.SuisseMobileFetch(suisseMobileId)
		if err != nil {
			log.Error(err)
			indexParams.Error = "An error occured"
			return helpers.TemplRender(c, templates.Index(baseParams, indexParams))
		}
	}

	if len(filename) <= 0 {
		indexParams.Error = "Error: URL is not supported"
		return helpers.TemplRender(c, templates.Index(baseParams, indexParams))
	}

	xml, err := gpxFile.ToXml(gpx.ToXmlParams{})
	if err != nil {
		log.Error(err)
		indexParams.Error = "An error occured"
		return helpers.TemplRender(c, templates.Index(baseParams, indexParams))
	}

	c.Set("Content-Type", "octet-stream")
	c.Set("Content-Disposition", fmt.Sprintf(
		"attechment,filename=%s.gpx",
		filename,
	))

	return c.Send(xml)
}