package web

import (
	"database/sql"
	"io"
	"net/http"
	"strconv"

	"codeberg.org/u1f320/filer/db/queries"
	"emperror.dev/errors"
	"github.com/go-chi/chi/v5"
	"github.com/rs/zerolog/log"
)

func (app *App) showFile(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	hash := chi.URLParam(r, "hash")
	filename := chi.URLParam(r, "filename")

	file, err := app.db.GetFileByName(ctx, queries.GetFileByNameParams{
		Filename: filename,
		Hash:     hash,
	})
	if err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			http.Error(w, "File not found", http.StatusNotFound)
			return
		}

		log.Err(err).Str("hash", hash).Str("name", filename).Msg("getting file from database")
		http.Error(w, "Internal server error", http.StatusInternalServerError)
		return
	}

	data, err := app.db.Store.GetFile(file.ID)
	if err != nil {
		log.Err(err).Str("hash", hash).Str("name", filename).Msg("getting file data")
		http.Error(w, "Internal server error", http.StatusInternalServerError)
		return
	}

	w.Header().Add("Content-Type", file.ContentType)
	w.Header().Add("Content-Length", strconv.FormatInt(file.Size, 10))
	_, err = io.Copy(w, data)
	if err != nil {
		log.Err(err).Str("hash", hash).Str("name", filename).Msg("writing file data")
		return
	}
}