// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0

package model // import "miniflux.app/v2/internal/model"

import (
	"strings"

	"github.com/gorilla/mux"

	"miniflux.app/v2/internal/mediaproxy"
)

// Enclosure represents an attachment.
type Enclosure struct {
	ID               int64  `json:"id"`
	UserID           int64  `json:"user_id"`
	EntryID          int64  `json:"entry_id"`
	URL              string `json:"url"`
	MimeType         string `json:"mime_type"`
	Size             int64  `json:"size"`
	MediaProgression int64  `json:"media_progression"`
}

type EnclosureUpdateRequest struct {
	MediaProgression int64 `json:"media_progression"`
}

// Html5MimeType will modify the actual MimeType to allow direct playback from HTML5 player for some kind of MimeType
func (e *Enclosure) Html5MimeType() string {
	if e.MimeType == "video/m4v" {
		return "video/x-m4v"
	}
	return e.MimeType
}

func (e *Enclosure) IsAudio() bool {
	return strings.HasPrefix(strings.ToLower(e.MimeType), "audio/")
}

func (e *Enclosure) IsVideo() bool {
	return strings.HasPrefix(strings.ToLower(e.MimeType), "video/")
}

func (e *Enclosure) IsImage() bool {
	mimeType := strings.ToLower(e.MimeType)
	if strings.HasPrefix(mimeType, "image/") {
		return true
	}
	mediaURL := strings.ToLower(e.URL)
	return strings.HasSuffix(mediaURL, ".jpg") || strings.HasSuffix(mediaURL, ".jpeg") || strings.HasSuffix(mediaURL, ".png") || strings.HasSuffix(mediaURL, ".gif")
}

// ProxifyEnclosureURL modifies the enclosure URL to use the media proxy if necessary.
func (e *Enclosure) ProxifyEnclosureURL(router *mux.Router, mediaProxyOption string, mediaProxyResourceTypes []string) {
	if mediaproxy.ShouldProxifyURLWithMimeType(e.URL, e.MimeType, mediaProxyOption, mediaProxyResourceTypes) {
		e.URL = mediaproxy.ProxifyAbsoluteURL(router, e.URL)
	}
}

// EnclosureList represents a list of attachments.
type EnclosureList []*Enclosure

// FindMediaPlayerEnclosure returns the first enclosure that can be played by a media player.
func (el EnclosureList) FindMediaPlayerEnclosure() *Enclosure {
	for _, enclosure := range el {
		if enclosure.URL != "" {
			if enclosure.IsAudio() || enclosure.IsVideo() {
				return enclosure
			}
		}
	}

	return nil
}

func (el EnclosureList) ContainsAudioOrVideo() bool {
	for _, enclosure := range el {
		if enclosure.IsAudio() || enclosure.IsVideo() {
			return true
		}
	}
	return false
}

func (el EnclosureList) ProxifyEnclosureURL(router *mux.Router, mediaProxyOption string, mediaProxyResourceTypes []string) {
	for _, enclosure := range el {
		enclosure.ProxifyEnclosureURL(router, mediaProxyOption, mediaProxyResourceTypes)
	}
}