/*
    Copyright (C) 2014-2022 Carl Hetherington <cth@carlh.net>

    This file is part of DCP-o-matic.

    DCP-o-matic is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    DCP-o-matic is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.

*/


#ifndef DCPOMATIC_DCP_CONTENT_H
#define DCPOMATIC_DCP_CONTENT_H


/** @file  src/lib/dcp_content.h
 *  @brief DCPContent class.
 */


#include "content.h"
#include "enum_indexed_vector.h"
#include "font.h"
#include "resolution.h"
#include "video_encoding.h"
#include <libcxml/cxml.h>
#include <dcp/content_kind.h>
#include <dcp/encrypted_kdm.h>
#include <dcp/language_tag.h>
#include <dcp/rating.h>


class DCPContentProperty
{
public:
	static int constexpr NEEDS_KDM = 600;
	static int constexpr NEEDS_ASSETS = 601;
	static int constexpr REFERENCE_VIDEO = 602;
	static int constexpr REFERENCE_AUDIO = 603;
	static int constexpr REFERENCE_TEXT = 604;
	static int constexpr NAME = 605;
	static int constexpr TEXTS = 606;
	static int constexpr CPL = 607;
};


/** @class DCPContent
 *  @brief An existing DCP used as input.
 */
class DCPContent : public Content
{
public:
	DCPContent(boost::filesystem::path p);
	DCPContent(cxml::ConstNodePtr, boost::optional<boost::filesystem::path> film_directory, int version);

	std::shared_ptr<DCPContent> shared_from_this() {
		return std::dynamic_pointer_cast<DCPContent>(Content::shared_from_this());
	}

	std::shared_ptr<const DCPContent> shared_from_this() const {
		return std::dynamic_pointer_cast<const DCPContent>(Content::shared_from_this());
	}

	dcpomatic::DCPTime full_length(std::shared_ptr<const Film> film) const override;
	dcpomatic::DCPTime approximate_length() const override;

	void examine(std::shared_ptr<const Film> film, std::shared_ptr<Job>, bool tolerant) override;
	std::string summary() const override;
	std::string technical_summary() const override;

	void as_xml(
		xmlpp::Element* element,
		bool with_paths,
		PathBehaviour path_behaviour,
		boost::optional<boost::filesystem::path> film_directory
		) const override;

	std::string identifier() const override;
	void take_settings_from(std::shared_ptr<const Content> c) override;

	void set_default_colour_conversion();
	std::list<dcpomatic::DCPTime> reel_split_points(std::shared_ptr<const Film> film) const override;

	std::vector<boost::filesystem::path> directories() const;

	boost::filesystem::path path_for_display() const override;

	bool encrypted() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _picture_encrypted || _sound_encrypted || _text_encrypted;
	}

	/** @return true if any picture asset in this DCP is encrypted */
	bool picture_encrypted() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _picture_encrypted;
	}

	/** @return true if any sound asset in this DCP is encrypted */
	bool sound_encrypted() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _sound_encrypted;
	}

	/** @return true if any text asset in this DCP is encrypted */
	bool text_encrypted() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _text_encrypted;
	}

	void add_kdm(dcp::EncryptedKDM);
	void add_ov(boost::filesystem::path ov);

	boost::optional<dcp::EncryptedKDM> kdm() const {
		return _kdm;
	}

	bool can_be_played() const override;
	bool needs_kdm() const;
	bool needs_assets() const;

	bool can_reference_anything(std::shared_ptr<const Film> film, std::string& why_not) const;

	void set_reference_video(bool r);

	bool reference_video() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _reference_video;
	}

	bool can_reference_video(std::shared_ptr<const Film> film, std::string &) const;

	void set_reference_audio(bool r);

	bool reference_audio() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _reference_audio;
	}

	bool can_reference_audio(std::shared_ptr<const Film> film, std::string &) const;

	void set_reference_text(TextType type, bool r);

	/** @param type Original type of texts in the DCP.
	 *  @return true if these texts are to be referenced.
	 */
	bool reference_text(TextType type) const {
		boost::mutex::scoped_lock lm(_mutex);
		return _reference_text[type];
	}

	bool can_reference_text(std::shared_ptr<const Film> film, TextType type, std::string &) const;

	bool reference_anything() const;

	void set_cpl(std::string id);

	boost::optional<std::string> cpl() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _cpl;
	}

	std::string name() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _name;
	}

	bool three_d() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _three_d;
	}

	boost::optional<dcp::ContentKind> content_kind() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _content_kind;
	}

	dcp::Standard standard() const {
		boost::mutex::scoped_lock lm(_mutex);
		DCPOMATIC_ASSERT(_standard);
		return _standard.get();
	}

	boost::optional<VideoEncoding> video_encoding() const {
		boost::mutex::scoped_lock lm(_mutex);
		return _video_encoding;
	}

	std::map<dcp::Marker, dcpomatic::ContentTime> markers() const {
		return _markers;
	}

	bool kdm_timing_window_valid() const;

	Resolution resolution() const;

	std::vector<dcp::Rating> ratings() const {
		return _ratings;
	}

	std::vector<std::string> content_versions() const {
		return _content_versions;
	}

	int active_audio_channels() const;

	/** @return a guess of the DCP's audio language; if there are multiple reels,
	 *  and they have different langauges, this could be wrong.
	 */
	boost::optional<dcp::LanguageTag> audio_language() const {
		return _audio_language;
	}

	void check_font_ids();

	boost::optional<std::string> chain() const {
		return _chain;
	}

	boost::optional<std::string> distributor() const {
		return _distributor;
	}

	boost::optional<std::string> facility() const {
		return _facility;
	}

	boost::optional<dcp::Luminance> luminance() const {
		return _luminance;
	}

	std::list<dcpomatic::DCPTimePeriod> reels(std::shared_ptr<const Film> film) const;

private:
	friend struct reels_test5;

	void add_properties(std::shared_ptr<const Film> film, std::list<UserProperty>& p) const override;

	void read_directory(boost::filesystem::path);
	void read_sub_directory(boost::filesystem::path);
	bool overlaps(std::shared_ptr<const Film> film, std::function<bool (std::shared_ptr<const Content>)> part) const;

	std::string _name;
	bool _picture_encrypted;
	bool _sound_encrypted;
	bool _text_encrypted;
	/** true if this DCP needs more assets before it can be played */
	bool _needs_assets;
	boost::optional<dcp::EncryptedKDM> _kdm;
	/** true if _kdm successfully decrypts the first frame of our DCP */
	bool _kdm_valid;
	/** true if the video in this DCP should be included in the output by reference
	 *  rather than by rewrapping.
	 */
	bool _reference_video;
	/** true if the audio in this DCP should be included in the output by reference
	 *  rather than by rewrapping.
	 */
	bool _reference_audio;
	/** true if the texts in this DCP should be included in the output by reference
	 *  rather than by rewrapping.  The types here are the original text types,
	 *  not what they are being used for.
	 */
	EnumIndexedVector<bool, TextType> _reference_text;

	boost::optional<dcp::Standard> _standard;
	boost::optional<VideoEncoding> _video_encoding;
	boost::optional<dcp::ContentKind> _content_kind;
	bool _three_d;
	/** ID of the CPL to use; older metadata might not specify this: in that case
	 *  just use the only CPL.
	 */
	boost::optional<std::string> _cpl;
	/** List of the lengths of the reels in this DCP */
	std::list<int64_t> _reel_lengths;
	std::map<dcp::Marker, dcpomatic::ContentTime> _markers;
	std::vector<dcp::Rating> _ratings;
	std::vector<std::string> _content_versions;
	EnumIndexedVector<bool, TextType> _has_non_zero_entry_point;

	boost::optional<int> _active_audio_channels;
	boost::optional<dcp::LanguageTag> _audio_language;

	boost::optional<std::string> _chain;
	boost::optional<std::string> _distributor;
	boost::optional<std::string> _facility;
	boost::optional<dcp::Luminance> _luminance;
};


#endif