// Copyright 2024 Patial Tech (Ankit Patial).
//
// This file is part of code.patial.tech/go/appcore, which is MIT licensed.
// See http://opensource.org/licenses/MIT

package email

import (
	"os"
	"path/filepath"
	"time"

	"code.patial.tech/go/appcore/open"
)

type Transport interface {
	Send(*Message) error
}

// DumpToTemp transport is for development environment to ensure emails are renderd as HTML ok
//
// once dump operation is done it will try to open the html with default app for html
type DumpToTemp struct{}

func (DumpToTemp) Send(msg *Message) error {
	// validate msg first
	if err := msg.Validate(); err != nil {
		return err
	}

	dir := os.TempDir()
	id := time.Now().Format("20060102T150405999")
	file := filepath.Join(dir, id+".html")

	if err := os.WriteFile(file, []byte(msg.HtmlBody), 0440); err != nil {
		return err
	}

	return open.WithDefaultApp(file)
}