package web

import (
	"io"
	"log/slog"
	"net/http"

	"git.jmbit.de/jmb/scanfile/server/internal/database"
	"git.jmbit.de/jmb/scanfile/server/internal/processing"
	"github.com/spf13/viper"
)

func IndexWebHandler(w http.ResponseWriter, r *http.Request) {
	files, err := database.GetAllFiles()
	if err != nil {
		slog.Error("Error in IndexWebHandler", "error", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	component := Index(files)
	err = component.Render(r.Context(), w)
	if err != nil {
		slog.Error("Error rendering in IndexWebHandler", "error", err)
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
}

// IndexUploadHandler handles the upload of a new file
func IndexUploadHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Only POST allowed", http.StatusBadRequest)
		return
	}

	maxUploadSize := viper.GetInt64("web.maxfilesizemb") * 1024 * 1024
	r.Body = http.MaxBytesReader(w, r.Body, maxUploadSize)
	defer r.Body.Close()
	fileData, fileHeader, err := r.FormFile("file")
	if err != nil {
		slog.Error("Error parsing form in IndexUploadHandler", "error", err)
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	slog.Debug("File form submitted", "file-name", fileHeader.Filename, "file-size", fileHeader.Size)
	fileBytes, err := io.ReadAll(fileData)
	if err != nil {
		slog.Error("Error reading file in IndexUploadHandler", "error", err)
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	slog.Debug("File from form read", "file-name", fileHeader.Filename, "file-size", len(fileBytes))

	file, err := database.CreateFile(r.Context(), fileHeader.Filename, fileBytes)
	if err != nil {
		slog.Error("Error saving file in IndexUploadHandler", "error", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	err = processing.Submit(r.Context(), file.ID)
	if err != nil {
		slog.Error("Error submitting file for processing in IndexUploadHandler", "error", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	//w.Header().Set("HX-Redirect", fmt.Sprintf("/files/%s", file.ID.String()))
	component := UploadSuccessCard(file)
	err = component.Render(r.Context(), w)
	if err != nil {
		slog.Error("Error rendering in IndexUploadHandler", "error", err)
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
}