package routes

import (
	"encoding/json"
	"io"
	"net/http"
	"strconv"

	"tomatentum.net/svg-templater/pkg/svg"
	"tomatentum.net/svg-templater/pkg/svg/actions"
)

func AddPage(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseMultipartForm(128000000); err != nil {
		http.Error(w, "Couldn't parse form data.", http.StatusBadRequest)
		return
	}

	fileheaders := r.MultipartForm.File["files"]

	id := r.PathValue("id")

	pages := make([]svg.TemplatePage, len(fileheaders))

	for i, fileh := range fileheaders {
		file, err := fileh.Open()

		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}

		buf, err := io.ReadAll(file)

		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}

		page, err := actions.AddPage(id, buf)

		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		pages[i] = page
	}

	err := json.NewEncoder(w).Encode(pages)

	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

func DeletePage(w http.ResponseWriter, r *http.Request) {

	id, pagestring := r.PathValue("id"), r.PathValue("page")

	page, err := strconv.Atoi(pagestring)

	if err != nil {
		http.Error(w, "Page must be a number", http.StatusBadRequest)
		return
	}

	ok, err := actions.DeletePage(id, page)

	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	if !ok {
		http.Error(w, "Could not delete page", http.StatusInternalServerError)
		return
	}
}